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v811_spc009/art/runtime/jni/jni_internal.cc

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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "jni_internal.h"
#include <cstdarg>
#include <log/log.h>
#include <memory>
#include <utility>
#include "art_field-inl.h"
#include "art_method-inl.h"
#include "base/allocator.h"
#include "base/atomic.h"
#include "base/casts.h"
#include "base/enums.h"
#include "base/file_utils.h"
#include "base/logging.h" // For VLOG.
#include "base/mutex.h"
#include "base/safe_map.h"
#include "base/stl_util.h"
#include "class_linker-inl.h"
#include "class_root-inl.h"
#include "dex/dex_file-inl.h"
#include "dex/utf-inl.h"
#include "fault_handler.h"
#include "hidden_api.h"
#include "gc/accounting/card_table-inl.h"
#include "gc_root.h"
#include "indirect_reference_table-inl.h"
#include "interpreter/interpreter.h"
#include "java_vm_ext.h"
#include "jni_env_ext.h"
#include "jvalue-inl.h"
#include "mirror/class-alloc-inl.h"
#include "mirror/class-inl.h"
#include "mirror/class_loader.h"
#include "mirror/dex_cache-inl.h"
#include "mirror/field.h"
#include "mirror/method.h"
#include "mirror/object-inl.h"
#include "mirror/object_array-alloc-inl.h"
#include "mirror/object_array-inl.h"
#include "mirror/string-alloc-inl.h"
#include "mirror/string-inl.h"
#include "mirror/throwable.h"
#include "nativehelper/scoped_local_ref.h"
#include "parsed_options.h"
#include "reflection.h"
#include "runtime.h"
#include "scoped_thread_state_change-inl.h"
#include "thread.h"
#include "well_known_classes.h"
namespace art {
namespace {
// Frees the given va_list upon destruction.
// This also guards the returns from inside of the CHECK_NON_NULL_ARGUMENTs.
struct ScopedVAArgs {
explicit ScopedVAArgs(va_list* args): args(args) {}
ScopedVAArgs(const ScopedVAArgs&) = delete;
ScopedVAArgs(ScopedVAArgs&&) = delete;
~ScopedVAArgs() { va_end(*args); }
private:
va_list* args;
};
constexpr char kBadUtf8ReplacementChar[] = "?";
// This is a modified version of CountModifiedUtf8Chars() from utf.cc
// with extra checks and different output options.
//
// The `good` functor can process valid characters.
// The `bad` functor is called when we find an invalid character and
// returns true to abort processing, or false to continue processing.
//
// When aborted, VisitModifiedUtf8Chars() returns 0, otherwise the
// number of UTF-16 chars.
template <typename GoodFunc, typename BadFunc>
size_t VisitModifiedUtf8Chars(const char* utf8, size_t byte_count, GoodFunc good, BadFunc bad) {
DCHECK_LE(byte_count, strlen(utf8));
size_t len = 0;
const char* end = utf8 + byte_count;
while (utf8 != end) {
int ic = *utf8;
if (LIKELY((ic & 0x80) == 0)) {
// One-byte encoding.
good(utf8, 1u);
utf8 += 1u;
len += 1u;
continue;
}
auto is_ascii = [utf8]() {
const char* ptr = utf8; // Make a copy that can be modified by GetUtf16FromUtf8().
return mirror::String::IsASCII(dchecked_integral_cast<uint16_t>(GetUtf16FromUtf8(&ptr)));
};
// Note: Neither CountModifiedUtf8Chars() nor GetUtf16FromUtf8() checks whether
// the bit 0x40 is correctly set in the leading byte of a multi-byte sequence.
if ((ic & 0x20) == 0) {
// Two-byte encoding.
if (static_cast<size_t>(end - utf8) < 2u) {
return bad() ? 0u : len + 1u; // Reached end of sequence
}
if (mirror::kUseStringCompression && is_ascii()) {
if (bad()) {
return 0u;
}
} else {
good(utf8, 2u);
}
utf8 += 2u;
len += 1u;
continue;
}
if ((ic & 0x10) == 0) {
// Three-byte encoding.
if (static_cast<size_t>(end - utf8) < 3u) {
return bad() ? 0u : len + 1u; // Reached end of sequence
}
if (mirror::kUseStringCompression && is_ascii()) {
if (bad()) {
return 0u;
}
} else {
good(utf8, 3u);
}
utf8 += 3u;
len += 1u;
continue;
}
// Four-byte encoding: needs to be converted into a surrogate pair.
// The decoded chars are never ASCII.
if (static_cast<size_t>(end - utf8) < 4u) {
return bad() ? 0u : len + 1u; // Reached end of sequence
}
good(utf8, 4u);
utf8 += 4u;
len += 2u;
}
return len;
}
} // namespace
// Consider turning this on when there is errors which could be related to JNI array copies such as
// things not rendering correctly. E.g. b/16858794
static constexpr bool kWarnJniAbort = false;
static hiddenapi::AccessContext GetJniAccessContext(Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
// Construct AccessContext from the first calling class on stack.
// If the calling class cannot be determined, e.g. unattached threads,
// we conservatively assume the caller is trusted.
ObjPtr<mirror::Class> caller = GetCallingClass(self, /* num_frames= */ 1);
return caller.IsNull() ? hiddenapi::AccessContext(/* is_trusted= */ true)
: hiddenapi::AccessContext(caller);
}
template<typename T>
ALWAYS_INLINE static bool ShouldDenyAccessToMember(
T* member,
Thread* self,
hiddenapi::AccessMethod access_kind = hiddenapi::AccessMethod::kJNI)
REQUIRES_SHARED(Locks::mutator_lock_) {
return hiddenapi::ShouldDenyAccessToMember(
member,
[self]() REQUIRES_SHARED(Locks::mutator_lock_) { return GetJniAccessContext(self); },
access_kind);
}
// Helpers to call instrumentation functions for fields. These take jobjects so we don't need to set
// up handles for the rare case where these actually do something. Once these functions return it is
// possible there will be a pending exception if the instrumentation happens to throw one.
static void NotifySetObjectField(ArtField* field, jobject obj, jobject jval)
REQUIRES_SHARED(Locks::mutator_lock_) {
DCHECK_EQ(field->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
if (UNLIKELY(instrumentation->HasFieldWriteListeners())) {
Thread* self = Thread::Current();
ArtMethod* cur_method = self->GetCurrentMethod(/*dex_pc=*/ nullptr,
/*check_suspended=*/ true,
/*abort_on_error=*/ false);
if (cur_method == nullptr) {
// Set/Get Fields can be issued without a method during runtime startup/teardown. Ignore all
// of these changes.
return;
}
DCHECK(cur_method->IsNative());
JValue val;
val.SetL(self->DecodeJObject(jval));
instrumentation->FieldWriteEvent(self,
self->DecodeJObject(obj),
cur_method,
0, // dex_pc is always 0 since this is a native method.
field,
val);
}
}
static void NotifySetPrimitiveField(ArtField* field, jobject obj, JValue val)
REQUIRES_SHARED(Locks::mutator_lock_) {
DCHECK_NE(field->GetTypeAsPrimitiveType(), Primitive::kPrimNot);
instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
if (UNLIKELY(instrumentation->HasFieldWriteListeners())) {
Thread* self = Thread::Current();
ArtMethod* cur_method = self->GetCurrentMethod(/*dex_pc=*/ nullptr,
/*check_suspended=*/ true,
/*abort_on_error=*/ false);
if (cur_method == nullptr) {
// Set/Get Fields can be issued without a method during runtime startup/teardown. Ignore all
// of these changes.
return;
}
DCHECK(cur_method->IsNative());
instrumentation->FieldWriteEvent(self,
self->DecodeJObject(obj),
cur_method,
0, // dex_pc is always 0 since this is a native method.
field,
val);
}
}
static void NotifyGetField(ArtField* field, jobject obj)
REQUIRES_SHARED(Locks::mutator_lock_) {
instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
if (UNLIKELY(instrumentation->HasFieldReadListeners())) {
Thread* self = Thread::Current();
ArtMethod* cur_method = self->GetCurrentMethod(/*dex_pc=*/ nullptr,
/*check_suspended=*/ true,
/*abort_on_error=*/ false);
if (cur_method == nullptr) {
// Set/Get Fields can be issued without a method during runtime startup/teardown. Ignore all
// of these changes.
return;
}
DCHECK(cur_method->IsNative());
instrumentation->FieldReadEvent(self,
self->DecodeJObject(obj),
cur_method,
0, // dex_pc is always 0 since this is a native method.
field);
}
}
// Section 12.3.2 of the JNI spec describes JNI class descriptors. They're
// separated with slashes but aren't wrapped with "L;" like regular descriptors
// (i.e. "a/b/C" rather than "La/b/C;"). Arrays of reference types are an
// exception; there the "L;" must be present ("[La/b/C;"). Historically we've
// supported names with dots too (such as "a.b.C").
static std::string NormalizeJniClassDescriptor(const char* name) {
std::string result;
// Add the missing "L;" if necessary.
if (name[0] == '[') {
result = name;
} else {
result += 'L';
result += name;
result += ';';
}
// Rewrite '.' as '/' for backwards compatibility.
if (result.find('.') != std::string::npos) {
LOG(WARNING) << "Call to JNI FindClass with dots in name: "
<< "\"" << name << "\"";
std::replace(result.begin(), result.end(), '.', '/');
}
return result;
}
static void ReportInvalidJNINativeMethod(const ScopedObjectAccess& soa,
ObjPtr<mirror::Class> c,
const char* kind,
jint idx)
REQUIRES_SHARED(Locks::mutator_lock_) {
LOG(ERROR)
<< "Failed to register native method in " << c->PrettyDescriptor()
<< " in " << c->GetDexCache()->GetLocation()->ToModifiedUtf8()
<< ": " << kind << " is null at index " << idx;
soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchMethodError;",
"%s is null at index %d",
kind,
idx);
}
template<bool kEnableIndexIds>
static jmethodID FindMethodID(ScopedObjectAccess& soa, jclass jni_class,
const char* name, const char* sig, bool is_static)
REQUIRES_SHARED(Locks::mutator_lock_) {
return jni::EncodeArtMethod<kEnableIndexIds>(FindMethodJNI(soa, jni_class, name, sig, is_static));
}
template<bool kEnableIndexIds>
static ObjPtr<mirror::ClassLoader> GetClassLoader(const ScopedObjectAccess& soa)
REQUIRES_SHARED(Locks::mutator_lock_) {
ArtMethod* method = soa.Self()->GetCurrentMethod(nullptr);
// If we are running Runtime.nativeLoad, use the overriding ClassLoader it set.
if (method ==
jni::DecodeArtMethod<kEnableIndexIds>(WellKnownClasses::java_lang_Runtime_nativeLoad)) {
return soa.Decode<mirror::ClassLoader>(soa.Self()->GetClassLoaderOverride());
}
// If we have a method, use its ClassLoader for context.
if (method != nullptr) {
return method->GetDeclaringClass()->GetClassLoader();
}
// We don't have a method, so try to use the system ClassLoader.
ObjPtr<mirror::ClassLoader> class_loader =
soa.Decode<mirror::ClassLoader>(Runtime::Current()->GetSystemClassLoader());
if (class_loader != nullptr) {
return class_loader;
}
// See if the override ClassLoader is set for gtests.
class_loader = soa.Decode<mirror::ClassLoader>(soa.Self()->GetClassLoaderOverride());
if (class_loader != nullptr) {
// If so, CommonCompilerTest should have marked the runtime as a compiler not compiling an
// image.
CHECK(Runtime::Current()->IsAotCompiler());
CHECK(!Runtime::Current()->IsCompilingBootImage());
return class_loader;
}
// Use the BOOTCLASSPATH.
return nullptr;
}
template<bool kEnableIndexIds>
static jfieldID FindFieldID(const ScopedObjectAccess& soa, jclass jni_class, const char* name,
const char* sig, bool is_static)
REQUIRES_SHARED(Locks::mutator_lock_) {
return jni::EncodeArtField<kEnableIndexIds>(FindFieldJNI(soa, jni_class, name, sig, is_static));
}
static void ThrowAIOOBE(ScopedObjectAccess& soa,
ObjPtr<mirror::Array> array,
jsize start,
jsize length,
const char* identifier)
REQUIRES_SHARED(Locks::mutator_lock_) {
std::string type(array->PrettyTypeOf());
soa.Self()->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;",
"%s offset=%d length=%d %s.length=%d",
type.c_str(), start, length, identifier, array->GetLength());
}
static void ThrowSIOOBE(ScopedObjectAccess& soa, jsize start, jsize length,
jsize array_length)
REQUIRES_SHARED(Locks::mutator_lock_) {
soa.Self()->ThrowNewExceptionF("Ljava/lang/StringIndexOutOfBoundsException;",
"offset=%d length=%d string.length()=%d", start, length,
array_length);
}
static void ThrowNoSuchMethodError(const ScopedObjectAccess& soa,
ObjPtr<mirror::Class> c,
const char* name,
const char* sig,
const char* kind)
REQUIRES_SHARED(Locks::mutator_lock_) {
std::string temp;
soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchMethodError;",
"no %s method \"%s.%s%s\"",
kind,
c->GetDescriptor(&temp),
name,
sig);
}
static ObjPtr<mirror::Class> EnsureInitialized(Thread* self, ObjPtr<mirror::Class> klass)
REQUIRES_SHARED(Locks::mutator_lock_) {
if (LIKELY(klass->IsInitialized())) {
return klass;
}
StackHandleScope<1> hs(self);
Handle<mirror::Class> h_klass(hs.NewHandle(klass));
if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(self, h_klass, true, true)) {
return nullptr;
}
return h_klass.Get();
}
ArtMethod* FindMethodJNI(const ScopedObjectAccess& soa,
jclass jni_class,
const char* name,
const char* sig,
bool is_static) {
ObjPtr<mirror::Class> c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class>(jni_class));
if (c == nullptr) {
return nullptr;
}
ArtMethod* method = nullptr;
auto pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
if (c->IsInterface()) {
method = c->FindInterfaceMethod(name, sig, pointer_size);
} else {
method = c->FindClassMethod(name, sig, pointer_size);
}
if (method != nullptr &&
ShouldDenyAccessToMember(method, soa.Self(), hiddenapi::AccessMethod::kNone)) {
// The resolved method that we have found cannot be accessed due to
// hiddenapi (typically it is declared up the hierarchy and is not an SDK
// method). Try to find an interface method from the implemented interfaces which is
// accessible.
ArtMethod* itf_method = c->FindAccessibleInterfaceMethod(method, pointer_size);
if (itf_method == nullptr) {
// No interface method. Call ShouldDenyAccessToMember again but this time
// with AccessMethod::kJNI to ensure that an appropriate warning is
// logged.
ShouldDenyAccessToMember(method, soa.Self(), hiddenapi::AccessMethod::kJNI);
method = nullptr;
} else {
// We found an interface method that is accessible, continue with the resolved method.
}
}
if (method == nullptr || method->IsStatic() != is_static) {
ThrowNoSuchMethodError(soa, c, name, sig, is_static ? "static" : "non-static");
return nullptr;
}
return method;
}
ArtField* FindFieldJNI(const ScopedObjectAccess& soa,
jclass jni_class,
const char* name,
const char* sig,
bool is_static) {
StackHandleScope<2> hs(soa.Self());
Handle<mirror::Class> c(
hs.NewHandle(EnsureInitialized(soa.Self(), soa.Decode<mirror::Class>(jni_class))));
if (c == nullptr) {
return nullptr;
}
ArtField* field = nullptr;
ObjPtr<mirror::Class> field_type;
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
if (UNLIKELY(sig[0] == '\0')) {
DCHECK(field == nullptr);
} else if (sig[1] != '\0') {
Handle<mirror::ClassLoader> class_loader(hs.NewHandle(c->GetClassLoader()));
field_type = class_linker->FindClass(soa.Self(), sig, class_loader);
} else {
field_type = class_linker->FindPrimitiveClass(*sig);
}
if (field_type == nullptr) {
// Failed to find type from the signature of the field.
DCHECK(sig[0] == '\0' || soa.Self()->IsExceptionPending());
StackHandleScope<1> hs2(soa.Self());
Handle<mirror::Throwable> cause(hs2.NewHandle(soa.Self()->GetException()));
soa.Self()->ClearException();
std::string temp;
soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;",
"no type \"%s\" found and so no field \"%s\" "
"could be found in class \"%s\" or its superclasses", sig, name,
c->GetDescriptor(&temp));
if (cause != nullptr) {
soa.Self()->GetException()->SetCause(cause.Get());
}
return nullptr;
}
std::string temp;
if (is_static) {
field = mirror::Class::FindStaticField(
soa.Self(), c.Get(), name, field_type->GetDescriptor(&temp));
} else {
field = c->FindInstanceField(name, field_type->GetDescriptor(&temp));
}
if (field != nullptr && ShouldDenyAccessToMember(field, soa.Self())) {
field = nullptr;
}
if (field == nullptr) {
soa.Self()->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;",
"no \"%s\" field \"%s\" in class \"%s\" or its superclasses",
sig, name, c->GetDescriptor(&temp));
return nullptr;
}
return field;
}
int ThrowNewException(JNIEnv* env, jclass exception_class, const char* msg, jobject cause)
REQUIRES(!Locks::mutator_lock_) {
// Turn the const char* into a java.lang.String.
ScopedLocalRef<jstring> s(env, env->NewStringUTF(msg));
if (msg != nullptr && s.get() == nullptr) {
return JNI_ERR;
}
// Choose an appropriate constructor and set up the arguments.
jvalue args[2];
const char* signature;
if (msg == nullptr && cause == nullptr) {
signature = "()V";
} else if (msg != nullptr && cause == nullptr) {
signature = "(Ljava/lang/String;)V";
args[0].l = s.get();
} else if (msg == nullptr && cause != nullptr) {
signature = "(Ljava/lang/Throwable;)V";
args[0].l = cause;
} else {
signature = "(Ljava/lang/String;Ljava/lang/Throwable;)V";
args[0].l = s.get();
args[1].l = cause;
}
jmethodID mid = env->GetMethodID(exception_class, "<init>", signature);
if (mid == nullptr) {
ScopedObjectAccess soa(env);
LOG(ERROR) << "No <init>" << signature << " in "
<< mirror::Class::PrettyClass(soa.Decode<mirror::Class>(exception_class));
return JNI_ERR;
}
ScopedLocalRef<jthrowable> exception(
env, reinterpret_cast<jthrowable>(env->NewObjectA(exception_class, mid, args)));
if (exception.get() == nullptr) {
return JNI_ERR;
}
ScopedObjectAccess soa(env);
soa.Self()->SetException(soa.Decode<mirror::Throwable>(exception.get()));
return JNI_OK;
}
static JavaVMExt* JavaVmExtFromEnv(JNIEnv* env) {
return reinterpret_cast<JNIEnvExt*>(env)->GetVm();
}
#define CHECK_NON_NULL_ARGUMENT(value) \
CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, nullptr)
#define CHECK_NON_NULL_ARGUMENT_RETURN_VOID(value) \
CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, )
#define CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(value) \
CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, 0)
#define CHECK_NON_NULL_ARGUMENT_RETURN(value, return_val) \
CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, return_val)
#define CHECK_NON_NULL_ARGUMENT_FN_NAME(name, value, return_val) \
if (UNLIKELY((value) == nullptr)) { \
JavaVmExtFromEnv(env)->JniAbort(name, #value " == null"); \
return return_val; \
}
#define CHECK_NON_NULL_MEMCPY_ARGUMENT(length, value) \
if (UNLIKELY((length) != 0 && (value) == nullptr)) { \
JavaVmExtFromEnv(env)->JniAbort(__FUNCTION__, #value " == null"); \
return; \
}
template <bool kNative>
static ArtMethod* FindMethod(ObjPtr<mirror::Class> c,
std::string_view name,
std::string_view sig)
REQUIRES_SHARED(Locks::mutator_lock_) {
auto pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
for (auto& method : c->GetMethods(pointer_size)) {
if (kNative == method.IsNative() && name == method.GetName() && method.GetSignature() == sig) {
return &method;
}
}
return nullptr;
}
template <bool kEnableIndexIds>
class JNI {
public:
static jint GetVersion(JNIEnv*) {
return JNI_VERSION_1_6;
}
static jclass DefineClass(JNIEnv*, const char*, jobject, const jbyte*, jsize) {
LOG(WARNING) << "JNI DefineClass is not supported";
return nullptr;
}
static jclass FindClass(JNIEnv* env, const char* name) {
CHECK_NON_NULL_ARGUMENT(name);
Runtime* runtime = Runtime::Current();
ClassLinker* class_linker = runtime->GetClassLinker();
std::string descriptor(NormalizeJniClassDescriptor(name));
ScopedObjectAccess soa(env);
ObjPtr<mirror::Class> c = nullptr;
if (runtime->IsStarted()) {
StackHandleScope<1> hs(soa.Self());
Handle<mirror::ClassLoader> class_loader(hs.NewHandle(GetClassLoader<kEnableIndexIds>(soa)));
c = class_linker->FindClass(soa.Self(), descriptor.c_str(), class_loader);
} else {
c = class_linker->FindSystemClass(soa.Self(), descriptor.c_str());
}
return soa.AddLocalReference<jclass>(c);
}
static jmethodID FromReflectedMethod(JNIEnv* env, jobject jlr_method) {
CHECK_NON_NULL_ARGUMENT(jlr_method);
ScopedObjectAccess soa(env);
return jni::EncodeArtMethod<kEnableIndexIds>(ArtMethod::FromReflectedMethod(soa, jlr_method));
}
static jfieldID FromReflectedField(JNIEnv* env, jobject jlr_field) {
CHECK_NON_NULL_ARGUMENT(jlr_field);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> obj_field = soa.Decode<mirror::Object>(jlr_field);
if (obj_field->GetClass() != GetClassRoot<mirror::Field>()) {
// Not even a java.lang.reflect.Field, return null. TODO, is this check necessary?
return nullptr;
}
ObjPtr<mirror::Field> field = ObjPtr<mirror::Field>::DownCast(obj_field);
return jni::EncodeArtField<kEnableIndexIds>(field->GetArtField());
}
static jobject ToReflectedMethod(JNIEnv* env, jclass, jmethodID mid, jboolean) {
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
ArtMethod* m = jni::DecodeArtMethod(mid);
ObjPtr<mirror::Executable> method;
DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), kRuntimePointerSize);
if (m->IsConstructor()) {
method = mirror::Constructor::CreateFromArtMethod<kRuntimePointerSize>(soa.Self(), m);
} else {
method = mirror::Method::CreateFromArtMethod<kRuntimePointerSize>(soa.Self(), m);
}
return soa.AddLocalReference<jobject>(method);
}
static jobject ToReflectedField(JNIEnv* env, jclass, jfieldID fid, jboolean) {
CHECK_NON_NULL_ARGUMENT(fid);
ScopedObjectAccess soa(env);
ArtField* f = jni::DecodeArtField(fid);
return soa.AddLocalReference<jobject>(
mirror::Field::CreateFromArtField(soa.Self(), f, true));
}
static jclass GetObjectClass(JNIEnv* env, jobject java_object) {
CHECK_NON_NULL_ARGUMENT(java_object);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> o = soa.Decode<mirror::Object>(java_object);
return soa.AddLocalReference<jclass>(o->GetClass());
}
static jclass GetSuperclass(JNIEnv* env, jclass java_class) {
CHECK_NON_NULL_ARGUMENT(java_class);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Class> c = soa.Decode<mirror::Class>(java_class);
return soa.AddLocalReference<jclass>(c->IsInterface() ? nullptr : c->GetSuperClass());
}
// Note: java_class1 should be safely castable to java_class2, and
// not the other way around.
static jboolean IsAssignableFrom(JNIEnv* env, jclass java_class1, jclass java_class2) {
CHECK_NON_NULL_ARGUMENT_RETURN(java_class1, JNI_FALSE);
CHECK_NON_NULL_ARGUMENT_RETURN(java_class2, JNI_FALSE);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Class> c1 = soa.Decode<mirror::Class>(java_class1);
ObjPtr<mirror::Class> c2 = soa.Decode<mirror::Class>(java_class2);
return c2->IsAssignableFrom(c1) ? JNI_TRUE : JNI_FALSE;
}
static jboolean IsInstanceOf(JNIEnv* env, jobject jobj, jclass java_class) {
CHECK_NON_NULL_ARGUMENT_RETURN(java_class, JNI_FALSE);
if (jobj == nullptr) {
// Note: JNI is different from regular Java instanceof in this respect
return JNI_TRUE;
} else {
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> obj = soa.Decode<mirror::Object>(jobj);
ObjPtr<mirror::Class> c = soa.Decode<mirror::Class>(java_class);
return obj->InstanceOf(c) ? JNI_TRUE : JNI_FALSE;
}
}
static jint Throw(JNIEnv* env, jthrowable java_exception) {
ScopedObjectAccess soa(env);
ObjPtr<mirror::Throwable> exception = soa.Decode<mirror::Throwable>(java_exception);
if (exception == nullptr) {
return JNI_ERR;
}
soa.Self()->SetException(exception);
return JNI_OK;
}
static jint ThrowNew(JNIEnv* env, jclass c, const char* msg) {
CHECK_NON_NULL_ARGUMENT_RETURN(c, JNI_ERR);
return ThrowNewException(env, c, msg, nullptr);
}
static jboolean ExceptionCheck(JNIEnv* env) {
return static_cast<JNIEnvExt*>(env)->self_->IsExceptionPending() ? JNI_TRUE : JNI_FALSE;
}
static void ExceptionClear(JNIEnv* env) {
ScopedObjectAccess soa(env);
soa.Self()->ClearException();
}
static void ExceptionDescribe(JNIEnv* env) {
ScopedObjectAccess soa(env);
// If we have no exception to describe, pass through.
if (!soa.Self()->GetException()) {
return;
}
StackHandleScope<1> hs(soa.Self());
Handle<mirror::Throwable> old_exception(
hs.NewHandle<mirror::Throwable>(soa.Self()->GetException()));
soa.Self()->ClearException();
ScopedLocalRef<jthrowable> exception(env,
soa.AddLocalReference<jthrowable>(old_exception.Get()));
ScopedLocalRef<jclass> exception_class(env, env->GetObjectClass(exception.get()));
jmethodID mid = env->GetMethodID(exception_class.get(), "printStackTrace", "()V");
if (mid == nullptr) {
LOG(WARNING) << "JNI WARNING: no printStackTrace()V in "
<< mirror::Object::PrettyTypeOf(old_exception.Get());
} else {
env->CallVoidMethod(exception.get(), mid);
if (soa.Self()->IsExceptionPending()) {
LOG(WARNING) << "JNI WARNING: " << mirror::Object::PrettyTypeOf(soa.Self()->GetException())
<< " thrown while calling printStackTrace";
soa.Self()->ClearException();
}
}
soa.Self()->SetException(old_exception.Get());
}
static jthrowable ExceptionOccurred(JNIEnv* env) {
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> exception = soa.Self()->GetException();
return soa.AddLocalReference<jthrowable>(exception);
}
static void FatalError(JNIEnv*, const char* msg) {
LOG(FATAL) << "JNI FatalError called: " << msg;
}
static jint PushLocalFrame(JNIEnv* env, jint capacity) {
// TODO: SOA may not be necessary but I do it to please lock annotations.
ScopedObjectAccess soa(env);
if (EnsureLocalCapacityInternal(soa, capacity, "PushLocalFrame") != JNI_OK) {
return JNI_ERR;
}
down_cast<JNIEnvExt*>(env)->PushFrame(capacity);
return JNI_OK;
}
static jobject PopLocalFrame(JNIEnv* env, jobject java_survivor) {
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> survivor = soa.Decode<mirror::Object>(java_survivor);
soa.Env()->PopFrame();
return soa.AddLocalReference<jobject>(survivor);
}
static jint EnsureLocalCapacity(JNIEnv* env, jint desired_capacity) {
// TODO: SOA may not be necessary but I do it to please lock annotations.
ScopedObjectAccess soa(env);
return EnsureLocalCapacityInternal(soa, desired_capacity, "EnsureLocalCapacity");
}
static jobject NewGlobalRef(JNIEnv* env, jobject obj) {
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> decoded_obj = soa.Decode<mirror::Object>(obj);
return soa.Vm()->AddGlobalRef(soa.Self(), decoded_obj);
}
static void DeleteGlobalRef(JNIEnv* env, jobject obj) {
JavaVMExt* vm = down_cast<JNIEnvExt*>(env)->GetVm();
Thread* self = down_cast<JNIEnvExt*>(env)->self_;
vm->DeleteGlobalRef(self, obj);
}
static jweak NewWeakGlobalRef(JNIEnv* env, jobject obj) {
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> decoded_obj = soa.Decode<mirror::Object>(obj);
return soa.Vm()->AddWeakGlobalRef(soa.Self(), decoded_obj);
}
static void DeleteWeakGlobalRef(JNIEnv* env, jweak obj) {
JavaVMExt* vm = down_cast<JNIEnvExt*>(env)->GetVm();
Thread* self = down_cast<JNIEnvExt*>(env)->self_;
vm->DeleteWeakGlobalRef(self, obj);
}
static jobject NewLocalRef(JNIEnv* env, jobject obj) {
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> decoded_obj = soa.Decode<mirror::Object>(obj);
// Check for null after decoding the object to handle cleared weak globals.
if (decoded_obj == nullptr) {
return nullptr;
}
return soa.AddLocalReference<jobject>(decoded_obj);
}
static void DeleteLocalRef(JNIEnv* env, jobject obj) {
if (obj == nullptr) {
return;
}
// SOA is only necessary to have exclusion between GC root marking and removing.
// We don't want to have the GC attempt to mark a null root if we just removed
// it. b/22119403
ScopedObjectAccess soa(env);
auto* ext_env = down_cast<JNIEnvExt*>(env);
if (!ext_env->locals_.Remove(ext_env->local_ref_cookie_, obj)) {
// Attempting to delete a local reference that is not in the
// topmost local reference frame is a no-op. DeleteLocalRef returns
// void and doesn't throw any exceptions, but we should probably
// complain about it so the user will notice that things aren't
// going quite the way they expect.
LOG(WARNING) << "JNI WARNING: DeleteLocalRef(" << obj << ") "
<< "failed to find entry";
}
}
static jboolean IsSameObject(JNIEnv* env, jobject obj1, jobject obj2) {
if (obj1 == obj2) {
return JNI_TRUE;
} else {
ScopedObjectAccess soa(env);
return (soa.Decode<mirror::Object>(obj1) == soa.Decode<mirror::Object>(obj2))
? JNI_TRUE : JNI_FALSE;
}
}
static jobject AllocObject(JNIEnv* env, jclass java_class) {
CHECK_NON_NULL_ARGUMENT(java_class);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Class> c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class>(java_class));
if (c == nullptr) {
return nullptr;
}
if (c->IsStringClass()) {
gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
return soa.AddLocalReference<jobject>(
mirror::String::AllocEmptyString(soa.Self(), allocator_type));
}
return soa.AddLocalReference<jobject>(c->AllocObject(soa.Self()));
}
static jobject NewObject(JNIEnv* env, jclass java_class, jmethodID mid, ...) {
va_list args;
va_start(args, mid);
ScopedVAArgs free_args_later(&args);
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(mid);
jobject result = NewObjectV(env, java_class, mid, args);
return result;
}
static jobject NewObjectV(JNIEnv* env, jclass java_class, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Class> c = EnsureInitialized(soa.Self(),
soa.Decode<mirror::Class>(java_class));
if (c == nullptr) {
return nullptr;
}
if (c->IsStringClass()) {
// Replace calls to String.<init> with equivalent StringFactory call.
jmethodID sf_mid = jni::EncodeArtMethod<kEnableIndexIds>(
WellKnownClasses::StringInitToStringFactory(jni::DecodeArtMethod(mid)));
return CallStaticObjectMethodV(env, WellKnownClasses::java_lang_StringFactory, sf_mid, args);
}
ObjPtr<mirror::Object> result = c->AllocObject(soa.Self());
if (result == nullptr) {
return nullptr;
}
jobject local_result = soa.AddLocalReference<jobject>(result);
CallNonvirtualVoidMethodV(env, local_result, java_class, mid, args);
if (soa.Self()->IsExceptionPending()) {
return nullptr;
}
return local_result;
}
static jobject NewObjectA(JNIEnv* env, jclass java_class, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Class> c = EnsureInitialized(soa.Self(),
soa.Decode<mirror::Class>(java_class));
if (c == nullptr) {
return nullptr;
}
if (c->IsStringClass()) {
// Replace calls to String.<init> with equivalent StringFactory call.
jmethodID sf_mid = jni::EncodeArtMethod<kEnableIndexIds>(
WellKnownClasses::StringInitToStringFactory(jni::DecodeArtMethod(mid)));
return CallStaticObjectMethodA(env, WellKnownClasses::java_lang_StringFactory, sf_mid, args);
}
ObjPtr<mirror::Object> result = c->AllocObject(soa.Self());
if (result == nullptr) {
return nullptr;
}
jobject local_result = soa.AddLocalReference<jobjectArray>(result);
CallNonvirtualVoidMethodA(env, local_result, java_class, mid, args);
if (soa.Self()->IsExceptionPending()) {
return nullptr;
}
return local_result;
}
static jmethodID GetMethodID(JNIEnv* env, jclass java_class, const char* name, const char* sig) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(name);
CHECK_NON_NULL_ARGUMENT(sig);
ScopedObjectAccess soa(env);
return FindMethodID<kEnableIndexIds>(soa, java_class, name, sig, false);
}
static jmethodID GetStaticMethodID(JNIEnv* env, jclass java_class, const char* name,
const char* sig) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(name);
CHECK_NON_NULL_ARGUMENT(sig);
ScopedObjectAccess soa(env);
return FindMethodID<kEnableIndexIds>(soa, java_class, name, sig, true);
}
static jobject CallObjectMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jobject CallObjectMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jobject CallObjectMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jboolean CallBooleanMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return result.GetZ();
}
static jboolean CallBooleanMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetZ();
}
static jboolean CallBooleanMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetZ();
}
static jbyte CallByteMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return result.GetB();
}
static jbyte CallByteMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetB();
}
static jbyte CallByteMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetB();
}
static jchar CallCharMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return result.GetC();
}
static jchar CallCharMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetC();
}
static jchar CallCharMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetC();
}
static jdouble CallDoubleMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return result.GetD();
}
static jdouble CallDoubleMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetD();
}
static jdouble CallDoubleMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetD();
}
static jfloat CallFloatMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return result.GetF();
}
static jfloat CallFloatMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetF();
}
static jfloat CallFloatMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetF();
}
static jint CallIntMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return result.GetI();
}
static jint CallIntMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetI();
}
static jint CallIntMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetI();
}
static jlong CallLongMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return result.GetJ();
}
static jlong CallLongMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetJ();
}
static jlong CallLongMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetJ();
}
static jshort CallShortMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
return result.GetS();
}
static jshort CallShortMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetS();
}
static jshort CallShortMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetS();
}
static void CallVoidMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap);
}
static void CallVoidMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args);
}
static void CallVoidMethodA(JNIEnv* env, jobject obj, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args);
}
static jobject CallNonvirtualObjectMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
jobject local_result = soa.AddLocalReference<jobject>(result.GetL());
return local_result;
}
static jobject CallNonvirtualObjectMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jobject CallNonvirtualObjectMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithJValues(soa, obj, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jboolean CallNonvirtualBooleanMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid,
...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
return result.GetZ();
}
static jboolean CallNonvirtualBooleanMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetZ();
}
static jboolean CallNonvirtualBooleanMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetZ();
}
static jbyte CallNonvirtualByteMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
return result.GetB();
}
static jbyte CallNonvirtualByteMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetB();
}
static jbyte CallNonvirtualByteMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetB();
}
static jchar CallNonvirtualCharMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
return result.GetC();
}
static jchar CallNonvirtualCharMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetC();
}
static jchar CallNonvirtualCharMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetC();
}
static jshort CallNonvirtualShortMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
return result.GetS();
}
static jshort CallNonvirtualShortMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetS();
}
static jshort CallNonvirtualShortMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetS();
}
static jint CallNonvirtualIntMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
return result.GetI();
}
static jint CallNonvirtualIntMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetI();
}
static jint CallNonvirtualIntMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetI();
}
static jlong CallNonvirtualLongMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
return result.GetJ();
}
static jlong CallNonvirtualLongMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetJ();
}
static jlong CallNonvirtualLongMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetJ();
}
static jfloat CallNonvirtualFloatMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
return result.GetF();
}
static jfloat CallNonvirtualFloatMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetF();
}
static jfloat CallNonvirtualFloatMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetF();
}
static jdouble CallNonvirtualDoubleMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
return result.GetD();
}
static jdouble CallNonvirtualDoubleMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, obj, mid, args).GetD();
}
static jdouble CallNonvirtualDoubleMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, obj, mid, args).GetD();
}
static void CallNonvirtualVoidMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithVarArgs(soa, obj, mid, ap);
}
static void CallNonvirtualVoidMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithVarArgs(soa, obj, mid, args);
}
static void CallNonvirtualVoidMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithJValues(soa, obj, mid, args);
}
static jfieldID GetFieldID(JNIEnv* env, jclass java_class, const char* name, const char* sig) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(name);
CHECK_NON_NULL_ARGUMENT(sig);
ScopedObjectAccess soa(env);
return FindFieldID<kEnableIndexIds>(soa, java_class, name, sig, false);
}
static jfieldID GetStaticFieldID(JNIEnv* env, jclass java_class, const char* name,
const char* sig) {
CHECK_NON_NULL_ARGUMENT(java_class);
CHECK_NON_NULL_ARGUMENT(name);
CHECK_NON_NULL_ARGUMENT(sig);
ScopedObjectAccess soa(env);
return FindFieldID<kEnableIndexIds>(soa, java_class, name, sig, true);
}
static jobject GetObjectField(JNIEnv* env, jobject obj, jfieldID fid) {
CHECK_NON_NULL_ARGUMENT(obj);
CHECK_NON_NULL_ARGUMENT(fid);
ScopedObjectAccess soa(env);
ArtField* f = jni::DecodeArtField<kEnableIndexIds>(fid);
NotifyGetField(f, obj);
ObjPtr<mirror::Object> o = soa.Decode<mirror::Object>(obj);
return soa.AddLocalReference<jobject>(f->GetObject(o));
}
static jobject GetStaticObjectField(JNIEnv* env, jclass, jfieldID fid) {
CHECK_NON_NULL_ARGUMENT(fid);
ScopedObjectAccess soa(env);
ArtField* f = jni::DecodeArtField<kEnableIndexIds>(fid);
NotifyGetField(f, nullptr);
return soa.AddLocalReference<jobject>(f->GetObject(f->GetDeclaringClass()));
}
static void SetObjectField(JNIEnv* env, jobject java_object, jfieldID fid, jobject java_value) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_object);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid);
ScopedObjectAccess soa(env);
ArtField* f = jni::DecodeArtField<kEnableIndexIds>(fid);
NotifySetObjectField(f, java_object, java_value);
ObjPtr<mirror::Object> o = soa.Decode<mirror::Object>(java_object);
ObjPtr<mirror::Object> v = soa.Decode<mirror::Object>(java_value);
f->SetObject<false>(o, v);
}
static void SetStaticObjectField(JNIEnv* env, jclass, jfieldID fid, jobject java_value) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid);
ScopedObjectAccess soa(env);
ArtField* f = jni::DecodeArtField<kEnableIndexIds>(fid);
NotifySetObjectField(f, nullptr, java_value);
ObjPtr<mirror::Object> v = soa.Decode<mirror::Object>(java_value);
f->SetObject<false>(f->GetDeclaringClass(), v);
}
#define GET_PRIMITIVE_FIELD(fn, instance) \
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(instance); \
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(fid); \
ScopedObjectAccess soa(env); \
ArtField* f = jni::DecodeArtField<kEnableIndexIds>(fid); \
NotifyGetField(f, instance); \
ObjPtr<mirror::Object> o = soa.Decode<mirror::Object>(instance); \
return f->Get ##fn (o)
#define GET_STATIC_PRIMITIVE_FIELD(fn) \
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(fid); \
ScopedObjectAccess soa(env); \
ArtField* f = jni::DecodeArtField<kEnableIndexIds>(fid); \
NotifyGetField(f, nullptr); \
return f->Get ##fn (f->GetDeclaringClass())
#define SET_PRIMITIVE_FIELD(fn, instance, value) \
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(instance); \
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid); \
ScopedObjectAccess soa(env); \
ArtField* f = jni::DecodeArtField<kEnableIndexIds>(fid); \
NotifySetPrimitiveField(f, instance, JValue::FromPrimitive<decltype(value)>(value)); \
ObjPtr<mirror::Object> o = soa.Decode<mirror::Object>(instance); \
f->Set ##fn <false>(o, value)
#define SET_STATIC_PRIMITIVE_FIELD(fn, value) \
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid); \
ScopedObjectAccess soa(env); \
ArtField* f = jni::DecodeArtField<kEnableIndexIds>(fid); \
NotifySetPrimitiveField(f, nullptr, JValue::FromPrimitive<decltype(value)>(value)); \
f->Set ##fn <false>(f->GetDeclaringClass(), value)
static jboolean GetBooleanField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Boolean, obj);
}
static jbyte GetByteField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Byte, obj);
}
static jchar GetCharField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Char, obj);
}
static jshort GetShortField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Short, obj);
}
static jint GetIntField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Int, obj);
}
static jlong GetLongField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Long, obj);
}
static jfloat GetFloatField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Float, obj);
}
static jdouble GetDoubleField(JNIEnv* env, jobject obj, jfieldID fid) {
GET_PRIMITIVE_FIELD(Double, obj);
}
static jboolean GetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Boolean);
}
static jbyte GetStaticByteField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Byte);
}
static jchar GetStaticCharField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Char);
}
static jshort GetStaticShortField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Short);
}
static jint GetStaticIntField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Int);
}
static jlong GetStaticLongField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Long);
}
static jfloat GetStaticFloatField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Float);
}
static jdouble GetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid) {
GET_STATIC_PRIMITIVE_FIELD(Double);
}
static void SetBooleanField(JNIEnv* env, jobject obj, jfieldID fid, jboolean v) {
SET_PRIMITIVE_FIELD(Boolean, obj, v);
}
static void SetByteField(JNIEnv* env, jobject obj, jfieldID fid, jbyte v) {
SET_PRIMITIVE_FIELD(Byte, obj, v);
}
static void SetCharField(JNIEnv* env, jobject obj, jfieldID fid, jchar v) {
SET_PRIMITIVE_FIELD(Char, obj, v);
}
static void SetFloatField(JNIEnv* env, jobject obj, jfieldID fid, jfloat v) {
SET_PRIMITIVE_FIELD(Float, obj, v);
}
static void SetDoubleField(JNIEnv* env, jobject obj, jfieldID fid, jdouble v) {
SET_PRIMITIVE_FIELD(Double, obj, v);
}
static void SetIntField(JNIEnv* env, jobject obj, jfieldID fid, jint v) {
SET_PRIMITIVE_FIELD(Int, obj, v);
}
static void SetLongField(JNIEnv* env, jobject obj, jfieldID fid, jlong v) {
SET_PRIMITIVE_FIELD(Long, obj, v);
}
static void SetShortField(JNIEnv* env, jobject obj, jfieldID fid, jshort v) {
SET_PRIMITIVE_FIELD(Short, obj, v);
}
static void SetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid, jboolean v) {
SET_STATIC_PRIMITIVE_FIELD(Boolean, v);
}
static void SetStaticByteField(JNIEnv* env, jclass, jfieldID fid, jbyte v) {
SET_STATIC_PRIMITIVE_FIELD(Byte, v);
}
static void SetStaticCharField(JNIEnv* env, jclass, jfieldID fid, jchar v) {
SET_STATIC_PRIMITIVE_FIELD(Char, v);
}
static void SetStaticFloatField(JNIEnv* env, jclass, jfieldID fid, jfloat v) {
SET_STATIC_PRIMITIVE_FIELD(Float, v);
}
static void SetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid, jdouble v) {
SET_STATIC_PRIMITIVE_FIELD(Double, v);
}
static void SetStaticIntField(JNIEnv* env, jclass, jfieldID fid, jint v) {
SET_STATIC_PRIMITIVE_FIELD(Int, v);
}
static void SetStaticLongField(JNIEnv* env, jclass, jfieldID fid, jlong v) {
SET_STATIC_PRIMITIVE_FIELD(Long, v);
}
static void SetStaticShortField(JNIEnv* env, jclass, jfieldID fid, jshort v) {
SET_STATIC_PRIMITIVE_FIELD(Short, v);
}
static jobject CallStaticObjectMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
jobject local_result = soa.AddLocalReference<jobject>(result.GetL());
return local_result;
}
static jobject CallStaticObjectMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jobject CallStaticObjectMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithJValues(soa, nullptr, mid, args));
return soa.AddLocalReference<jobject>(result.GetL());
}
static jboolean CallStaticBooleanMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
return result.GetZ();
}
static jboolean CallStaticBooleanMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetZ();
}
static jboolean CallStaticBooleanMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetZ();
}
static jbyte CallStaticByteMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
return result.GetB();
}
static jbyte CallStaticByteMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetB();
}
static jbyte CallStaticByteMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetB();
}
static jchar CallStaticCharMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
return result.GetC();
}
static jchar CallStaticCharMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetC();
}
static jchar CallStaticCharMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetC();
}
static jshort CallStaticShortMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
return result.GetS();
}
static jshort CallStaticShortMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetS();
}
static jshort CallStaticShortMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetS();
}
static jint CallStaticIntMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
return result.GetI();
}
static jint CallStaticIntMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetI();
}
static jint CallStaticIntMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetI();
}
static jlong CallStaticLongMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
return result.GetJ();
}
static jlong CallStaticLongMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetJ();
}
static jlong CallStaticLongMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetJ();
}
static jfloat CallStaticFloatMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
return result.GetF();
}
static jfloat CallStaticFloatMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetF();
}
static jfloat CallStaticFloatMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetF();
}
static jdouble CallStaticDoubleMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap));
return result.GetD();
}
static jdouble CallStaticDoubleMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithVarArgs(soa, nullptr, mid, args).GetD();
}
static jdouble CallStaticDoubleMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid);
ScopedObjectAccess soa(env);
return InvokeWithJValues(soa, nullptr, mid, args).GetD();
}
static void CallStaticVoidMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
va_list ap;
va_start(ap, mid);
ScopedVAArgs free_args_later(&ap);
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithVarArgs(soa, nullptr, mid, ap);
}
static void CallStaticVoidMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithVarArgs(soa, nullptr, mid, args);
}
static void CallStaticVoidMethodA(JNIEnv* env, jclass, jmethodID mid, const jvalue* args) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid);
ScopedObjectAccess soa(env);
InvokeWithJValues(soa, nullptr, mid, args);
}
static jstring NewString(JNIEnv* env, const jchar* chars, jsize char_count) {
if (UNLIKELY(char_count < 0)) {
JavaVmExtFromEnv(env)->JniAbortF("NewString", "char_count < 0: %d", char_count);
return nullptr;
}
if (UNLIKELY(chars == nullptr && char_count > 0)) {
JavaVmExtFromEnv(env)->JniAbortF("NewString", "chars == null && char_count > 0");
return nullptr;
}
ScopedObjectAccess soa(env);
ObjPtr<mirror::String> result = mirror::String::AllocFromUtf16(soa.Self(), char_count, chars);
return soa.AddLocalReference<jstring>(result);
}
static jstring NewStringUTF(JNIEnv* env, const char* utf) {
if (utf == nullptr) {
return nullptr;
}
// The input may come from an untrusted source, so we need to validate it.
// We do not perform full validation, only as much as necessary to avoid reading
// beyond the terminating null character or breaking string compression invariants.
// CheckJNI performs stronger validation.
size_t utf8_length = strlen(utf);
if (UNLIKELY(utf8_length > static_cast<uint32_t>(std::numeric_limits<int32_t>::max()))) {
// Converting the utf8_length to int32_t for String::AllocFromModifiedUtf8() would
// overflow. Throw OOME eagerly to avoid 2GiB allocation when trying to replace
// invalid sequences (even if such replacements could reduce the size below 2GiB).
std::string error =
android::base::StringPrintf("NewStringUTF input is 2 GiB or more: %zu", utf8_length);
ScopedObjectAccess soa(env);
soa.Self()->ThrowOutOfMemoryError(error.c_str());
return nullptr;
}
std::optional<std::string> replacement_utf;
size_t utf16_length = VisitModifiedUtf8Chars(
utf,
utf8_length,
/*good=*/ [](const char* ptr ATTRIBUTE_UNUSED, size_t length ATTRIBUTE_UNUSED) {},
/*bad=*/ []() { return true; }); // Abort processing and return 0 for bad characters.
if (UNLIKELY(utf8_length != 0u && utf16_length == 0u)) {
// VisitModifiedUtf8Chars() aborted for a bad character.
android_errorWriteLog(0x534e4554, "172655291"); // Report to SafetyNet.
// Report the error to logcat but avoid too much spam.
static const uint64_t kMinDelay = UINT64_C(10000000000); // 10s
static std::atomic<uint64_t> prev_bad_input_time(UINT64_C(0));
uint64_t prev_time = prev_bad_input_time.load(std::memory_order_relaxed);
uint64_t now = NanoTime();
if ((prev_time == 0u || now - prev_time >= kMinDelay) &&
prev_bad_input_time.compare_exchange_strong(prev_time, now, std::memory_order_relaxed)) {
LOG(ERROR) << "Invalid UTF-8 input to JNI::NewStringUTF()";
}
// Copy the input to the `replacement_utf` and replace bad characters.
replacement_utf.emplace();
replacement_utf->reserve(utf8_length);
utf16_length = VisitModifiedUtf8Chars(
utf,
utf8_length,
/*good=*/ [&](const char* ptr, size_t length) {
replacement_utf->append(ptr, length);
},
/*bad=*/ [&]() {
replacement_utf->append(kBadUtf8ReplacementChar, sizeof(kBadUtf8ReplacementChar) - 1u);
return false; // Continue processing.
});
utf = replacement_utf->c_str();
utf8_length = replacement_utf->length();
}
DCHECK_LE(utf16_length, utf8_length);
DCHECK_LE(utf8_length, static_cast<uint32_t>(std::numeric_limits<int32_t>::max()));
ScopedObjectAccess soa(env);
ObjPtr<mirror::String> result =
mirror::String::AllocFromModifiedUtf8(soa.Self(), utf16_length, utf, utf8_length);
return soa.AddLocalReference<jstring>(result);
}
static jsize GetStringLength(JNIEnv* env, jstring java_string) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_string);
ScopedObjectAccess soa(env);
return soa.Decode<mirror::String>(java_string)->GetLength();
}
static jsize GetStringUTFLength(JNIEnv* env, jstring java_string) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_string);
ScopedObjectAccess soa(env);
return soa.Decode<mirror::String>(java_string)->GetUtfLength();
}
static void GetStringRegion(JNIEnv* env, jstring java_string, jsize start, jsize length,
jchar* buf) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string);
ScopedObjectAccess soa(env);
ObjPtr<mirror::String> s = soa.Decode<mirror::String>(java_string);
if (start < 0 || length < 0 || length > s->GetLength() - start) {
ThrowSIOOBE(soa, start, length, s->GetLength());
} else {
CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf);
if (s->IsCompressed()) {
const uint8_t* src = s->GetValueCompressed() + start;
for (int i = 0; i < length; ++i) {
buf[i] = static_cast<jchar>(src[i]);
}
} else {
const jchar* chars = static_cast<jchar*>(s->GetValue());
memcpy(buf, chars + start, length * sizeof(jchar));
}
}
}
static void GetStringUTFRegion(JNIEnv* env, jstring java_string, jsize start, jsize length,
char* buf) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string);
ScopedObjectAccess soa(env);
ObjPtr<mirror::String> s = soa.Decode<mirror::String>(java_string);
if (start < 0 || length < 0 || length > s->GetLength() - start) {
ThrowSIOOBE(soa, start, length, s->GetLength());
} else {
CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf);
if (length == 0 && buf == nullptr) {
// Don't touch anything when length is 0 and null buffer.
return;
}
if (s->IsCompressed()) {
const uint8_t* src = s->GetValueCompressed() + start;
for (int i = 0; i < length; ++i) {
buf[i] = static_cast<jchar>(src[i]);
}
buf[length] = '\0';
} else {
const jchar* chars = s->GetValue();
size_t bytes = CountUtf8Bytes(chars + start, length);
ConvertUtf16ToModifiedUtf8(buf, bytes, chars + start, length);
buf[bytes] = '\0';
}
}
}
static const jchar* GetStringChars(JNIEnv* env, jstring java_string, jboolean* is_copy) {
CHECK_NON_NULL_ARGUMENT(java_string);
ScopedObjectAccess soa(env);
ObjPtr<mirror::String> s = soa.Decode<mirror::String>(java_string);
gc::Heap* heap = Runtime::Current()->GetHeap();
if (heap->IsMovableObject(s) || s->IsCompressed()) {
jchar* chars = new jchar[s->GetLength()];
if (s->IsCompressed()) {
int32_t length = s->GetLength();
const uint8_t* src = s->GetValueCompressed();
for (int i = 0; i < length; ++i) {
chars[i] = static_cast<jchar>(src[i]);
}
} else {
memcpy(chars, s->GetValue(), sizeof(jchar) * s->GetLength());
}
if (is_copy != nullptr) {
*is_copy = JNI_TRUE;
}
return chars;
}
if (is_copy != nullptr) {
*is_copy = JNI_FALSE;
}
return static_cast<jchar*>(s->GetValue());
}
static void ReleaseStringChars(JNIEnv* env, jstring java_string, const jchar* chars) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string);
ScopedObjectAccess soa(env);
ObjPtr<mirror::String> s = soa.Decode<mirror::String>(java_string);
if (s->IsCompressed() || (s->IsCompressed() == false && chars != s->GetValue())) {
delete[] chars;
}
}
static const jchar* GetStringCritical(JNIEnv* env, jstring java_string, jboolean* is_copy) {
CHECK_NON_NULL_ARGUMENT(java_string);
ScopedObjectAccess soa(env);
ObjPtr<mirror::String> s = soa.Decode<mirror::String>(java_string);
gc::Heap* heap = Runtime::Current()->GetHeap();
if (s->IsCompressed()) {
if (is_copy != nullptr) {
*is_copy = JNI_TRUE;
}
int32_t length = s->GetLength();
const uint8_t* src = s->GetValueCompressed();
jchar* chars = new jchar[length];
for (int i = 0; i < length; ++i) {
chars[i] = static_cast<jchar>(src[i]);
}
return chars;
} else {
if (heap->IsMovableObject(s)) {
StackHandleScope<1> hs(soa.Self());
HandleWrapperObjPtr<mirror::String> h(hs.NewHandleWrapper(&s));
if (!kUseReadBarrier) {
heap->IncrementDisableMovingGC(soa.Self());
} else {
// For the CC collector, we only need to wait for the thread flip rather
// than the whole GC to occur thanks to the to-space invariant.
heap->IncrementDisableThreadFlip(soa.Self());
}
}
if (is_copy != nullptr) {
*is_copy = JNI_FALSE;
}
return static_cast<jchar*>(s->GetValue());
}
}
static void ReleaseStringCritical(JNIEnv* env,
jstring java_string,
const jchar* chars) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string);
ScopedObjectAccess soa(env);
gc::Heap* heap = Runtime::Current()->GetHeap();
ObjPtr<mirror::String> s = soa.Decode<mirror::String>(java_string);
if (!s->IsCompressed() && heap->IsMovableObject(s)) {
if (!kUseReadBarrier) {
heap->DecrementDisableMovingGC(soa.Self());
} else {
heap->DecrementDisableThreadFlip(soa.Self());
}
}
// TODO: For uncompressed strings GetStringCritical() always returns `s->GetValue()`.
// Should we report an error if the user passes a different `chars`?
if (s->IsCompressed() || (!s->IsCompressed() && s->GetValue() != chars)) {
delete[] chars;
}
}
static const char* GetStringUTFChars(JNIEnv* env, jstring java_string, jboolean* is_copy) {
if (java_string == nullptr) {
return nullptr;
}
if (is_copy != nullptr) {
*is_copy = JNI_TRUE;
}
ScopedObjectAccess soa(env);
ObjPtr<mirror::String> s = soa.Decode<mirror::String>(java_string);
size_t byte_count = s->GetUtfLength();
char* bytes = new char[byte_count + 1];
CHECK(bytes != nullptr); // bionic aborts anyway.
if (s->IsCompressed()) {
const uint8_t* src = s->GetValueCompressed();
for (size_t i = 0; i < byte_count; ++i) {
bytes[i] = src[i];
}
} else {
const uint16_t* chars = s->GetValue();
ConvertUtf16ToModifiedUtf8(bytes, byte_count, chars, s->GetLength());
}
bytes[byte_count] = '\0';
return bytes;
}
static void ReleaseStringUTFChars(JNIEnv*, jstring, const char* chars) {
delete[] chars;
}
static jsize GetArrayLength(JNIEnv* env, jarray java_array) {
CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_array);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> obj = soa.Decode<mirror::Object>(java_array);
if (UNLIKELY(!obj->IsArrayInstance())) {
soa.Vm()->JniAbortF("GetArrayLength", "not an array: %s", obj->PrettyTypeOf().c_str());
return 0;
}
ObjPtr<mirror::Array> array = obj->AsArray();
return array->GetLength();
}
static jobject GetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index) {
CHECK_NON_NULL_ARGUMENT(java_array);
ScopedObjectAccess soa(env);
ObjPtr<mirror::ObjectArray<mirror::Object>> array =
soa.Decode<mirror::ObjectArray<mirror::Object>>(java_array);
return soa.AddLocalReference<jobject>(array->Get(index));
}
static void SetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index,
jobject java_value) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
ObjPtr<mirror::ObjectArray<mirror::Object>> array =
soa.Decode<mirror::ObjectArray<mirror::Object>>(java_array);
ObjPtr<mirror::Object> value = soa.Decode<mirror::Object>(java_value);
array->Set<false>(index, value);
}
static jbooleanArray NewBooleanArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jbooleanArray, mirror::BooleanArray>(env, length);
}
static jbyteArray NewByteArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jbyteArray, mirror::ByteArray>(env, length);
}
static jcharArray NewCharArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jcharArray, mirror::CharArray>(env, length);
}
static jdoubleArray NewDoubleArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jdoubleArray, mirror::DoubleArray>(env, length);
}
static jfloatArray NewFloatArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jfloatArray, mirror::FloatArray>(env, length);
}
static jintArray NewIntArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jintArray, mirror::IntArray>(env, length);
}
static jlongArray NewLongArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jlongArray, mirror::LongArray>(env, length);
}
static jobjectArray NewObjectArray(JNIEnv* env, jsize length, jclass element_jclass,
jobject initial_element) {
if (UNLIKELY(length < 0)) {
JavaVmExtFromEnv(env)->JniAbortF("NewObjectArray", "negative array length: %d", length);
return nullptr;
}
CHECK_NON_NULL_ARGUMENT(element_jclass);
// Compute the array class corresponding to the given element class.
ScopedObjectAccess soa(env);
ObjPtr<mirror::Class> array_class;
{
ObjPtr<mirror::Class> element_class = soa.Decode<mirror::Class>(element_jclass);
if (UNLIKELY(element_class->IsPrimitive())) {
soa.Vm()->JniAbortF("NewObjectArray",
"not an object type: %s",
element_class->PrettyDescriptor().c_str());
return nullptr;
}
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
array_class = class_linker->FindArrayClass(soa.Self(), element_class);
if (UNLIKELY(array_class == nullptr)) {
return nullptr;
}
}
// Allocate and initialize if necessary.
ObjPtr<mirror::ObjectArray<mirror::Object>> result =
mirror::ObjectArray<mirror::Object>::Alloc(soa.Self(), array_class, length);
if (result != nullptr && initial_element != nullptr) {
ObjPtr<mirror::Object> initial_object = soa.Decode<mirror::Object>(initial_element);
if (initial_object != nullptr) {
ObjPtr<mirror::Class> element_class = result->GetClass()->GetComponentType();
if (UNLIKELY(!element_class->IsAssignableFrom(initial_object->GetClass()))) {
soa.Vm()->JniAbortF("NewObjectArray", "cannot assign object of type '%s' to array with "
"element type of '%s'",
mirror::Class::PrettyDescriptor(initial_object->GetClass()).c_str(),
element_class->PrettyDescriptor().c_str());
return nullptr;
} else {
for (jsize i = 0; i < length; ++i) {
result->SetWithoutChecks<false>(i, initial_object);
}
}
}
}
return soa.AddLocalReference<jobjectArray>(result);
}
static jshortArray NewShortArray(JNIEnv* env, jsize length) {
return NewPrimitiveArray<jshortArray, mirror::ShortArray>(env, length);
}
static void* GetPrimitiveArrayCritical(JNIEnv* env, jarray java_array, jboolean* is_copy) {
CHECK_NON_NULL_ARGUMENT(java_array);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Array> array = soa.Decode<mirror::Array>(java_array);
if (UNLIKELY(!array->GetClass()->IsPrimitiveArray())) {
soa.Vm()->JniAbortF("GetPrimitiveArrayCritical", "expected primitive array, given %s",
array->GetClass()->PrettyDescriptor().c_str());
return nullptr;
}
gc::Heap* heap = Runtime::Current()->GetHeap();
if (heap->IsMovableObject(array)) {
if (!kUseReadBarrier) {
heap->IncrementDisableMovingGC(soa.Self());
} else {
// For the CC collector, we only need to wait for the thread flip rather than the whole GC
// to occur thanks to the to-space invariant.
heap->IncrementDisableThreadFlip(soa.Self());
}
// Re-decode in case the object moved since IncrementDisableGC waits for GC to complete.
array = soa.Decode<mirror::Array>(java_array);
}
if (is_copy != nullptr) {
*is_copy = JNI_FALSE;
}
return array->GetRawData(array->GetClass()->GetComponentSize(), 0);
}
static void ReleasePrimitiveArrayCritical(JNIEnv* env, jarray java_array, void* elements,
jint mode) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Array> array = soa.Decode<mirror::Array>(java_array);
if (UNLIKELY(!array->GetClass()->IsPrimitiveArray())) {
soa.Vm()->JniAbortF("ReleasePrimitiveArrayCritical", "expected primitive array, given %s",
array->GetClass()->PrettyDescriptor().c_str());
return;
}
const size_t component_size = array->GetClass()->GetComponentSize();
ReleasePrimitiveArray(soa, array, component_size, elements, mode);
}
static jboolean* GetBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean* is_copy) {
return GetPrimitiveArray<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, is_copy);
}
static jbyte* GetByteArrayElements(JNIEnv* env, jbyteArray array, jboolean* is_copy) {
return GetPrimitiveArray<jbyteArray, jbyte, mirror::ByteArray>(env, array, is_copy);
}
static jchar* GetCharArrayElements(JNIEnv* env, jcharArray array, jboolean* is_copy) {
return GetPrimitiveArray<jcharArray, jchar, mirror::CharArray>(env, array, is_copy);
}
static jdouble* GetDoubleArrayElements(JNIEnv* env, jdoubleArray array, jboolean* is_copy) {
return GetPrimitiveArray<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, is_copy);
}
static jfloat* GetFloatArrayElements(JNIEnv* env, jfloatArray array, jboolean* is_copy) {
return GetPrimitiveArray<jfloatArray, jfloat, mirror::FloatArray>(env, array, is_copy);
}
static jint* GetIntArrayElements(JNIEnv* env, jintArray array, jboolean* is_copy) {
return GetPrimitiveArray<jintArray, jint, mirror::IntArray>(env, array, is_copy);
}
static jlong* GetLongArrayElements(JNIEnv* env, jlongArray array, jboolean* is_copy) {
return GetPrimitiveArray<jlongArray, jlong, mirror::LongArray>(env, array, is_copy);
}
static jshort* GetShortArrayElements(JNIEnv* env, jshortArray array, jboolean* is_copy) {
return GetPrimitiveArray<jshortArray, jshort, mirror::ShortArray>(env, array, is_copy);
}
static void ReleaseBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean* elements,
jint mode) {
ReleasePrimitiveArray<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, elements,
mode);
}
static void ReleaseByteArrayElements(JNIEnv* env, jbyteArray array, jbyte* elements, jint mode) {
ReleasePrimitiveArray<jbyteArray, jbyte, mirror::ByteArray>(env, array, elements, mode);
}
static void ReleaseCharArrayElements(JNIEnv* env, jcharArray array, jchar* elements, jint mode) {
ReleasePrimitiveArray<jcharArray, jchar, mirror::CharArray>(env, array, elements, mode);
}
static void ReleaseDoubleArrayElements(JNIEnv* env, jdoubleArray array, jdouble* elements,
jint mode) {
ReleasePrimitiveArray<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, elements, mode);
}
static void ReleaseFloatArrayElements(JNIEnv* env, jfloatArray array, jfloat* elements,
jint mode) {
ReleasePrimitiveArray<jfloatArray, jfloat, mirror::FloatArray>(env, array, elements, mode);
}
static void ReleaseIntArrayElements(JNIEnv* env, jintArray array, jint* elements, jint mode) {
ReleasePrimitiveArray<jintArray, jint, mirror::IntArray>(env, array, elements, mode);
}
static void ReleaseLongArrayElements(JNIEnv* env, jlongArray array, jlong* elements, jint mode) {
ReleasePrimitiveArray<jlongArray, jlong, mirror::LongArray>(env, array, elements, mode);
}
static void ReleaseShortArrayElements(JNIEnv* env, jshortArray array, jshort* elements,
jint mode) {
ReleasePrimitiveArray<jshortArray, jshort, mirror::ShortArray>(env, array, elements, mode);
}
static void GetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length,
jboolean* buf) {
GetPrimitiveArrayRegion<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, start,
length, buf);
}
static void GetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length,
jbyte* buf) {
GetPrimitiveArrayRegion<jbyteArray, jbyte, mirror::ByteArray>(env, array, start, length, buf);
}
static void GetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length,
jchar* buf) {
GetPrimitiveArrayRegion<jcharArray, jchar, mirror::CharArray>(env, array, start, length, buf);
}
static void GetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length,
jdouble* buf) {
GetPrimitiveArrayRegion<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, start, length,
buf);
}
static void GetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length,
jfloat* buf) {
GetPrimitiveArrayRegion<jfloatArray, jfloat, mirror::FloatArray>(env, array, start, length,
buf);
}
static void GetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length,
jint* buf) {
GetPrimitiveArrayRegion<jintArray, jint, mirror::IntArray>(env, array, start, length, buf);
}
static void GetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length,
jlong* buf) {
GetPrimitiveArrayRegion<jlongArray, jlong, mirror::LongArray>(env, array, start, length, buf);
}
static void GetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length,
jshort* buf) {
GetPrimitiveArrayRegion<jshortArray, jshort, mirror::ShortArray>(env, array, start, length,
buf);
}
static void SetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length,
const jboolean* buf) {
SetPrimitiveArrayRegion<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, start,
length, buf);
}
static void SetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length,
const jbyte* buf) {
SetPrimitiveArrayRegion<jbyteArray, jbyte, mirror::ByteArray>(env, array, start, length, buf);
}
static void SetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length,
const jchar* buf) {
SetPrimitiveArrayRegion<jcharArray, jchar, mirror::CharArray>(env, array, start, length, buf);
}
static void SetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length,
const jdouble* buf) {
SetPrimitiveArrayRegion<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, start, length,
buf);
}
static void SetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length,
const jfloat* buf) {
SetPrimitiveArrayRegion<jfloatArray, jfloat, mirror::FloatArray>(env, array, start, length,
buf);
}
static void SetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length,
const jint* buf) {
SetPrimitiveArrayRegion<jintArray, jint, mirror::IntArray>(env, array, start, length, buf);
}
static void SetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length,
const jlong* buf) {
SetPrimitiveArrayRegion<jlongArray, jlong, mirror::LongArray>(env, array, start, length, buf);
}
static void SetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length,
const jshort* buf) {
SetPrimitiveArrayRegion<jshortArray, jshort, mirror::ShortArray>(env, array, start, length,
buf);
}
static jint RegisterNatives(JNIEnv* env,
jclass java_class,
const JNINativeMethod* methods,
jint method_count) {
if (UNLIKELY(method_count < 0)) {
JavaVmExtFromEnv(env)->JniAbortF("RegisterNatives", "negative method count: %d",
method_count);
return JNI_ERR; // Not reached except in unit tests.
}
CHECK_NON_NULL_ARGUMENT_FN_NAME("RegisterNatives", java_class, JNI_ERR);
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
ScopedObjectAccess soa(env);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::Class> c = hs.NewHandle(soa.Decode<mirror::Class>(java_class));
if (UNLIKELY(method_count == 0)) {
LOG(WARNING) << "JNI RegisterNativeMethods: attempt to register 0 native methods for "
<< c->PrettyDescriptor();
return JNI_OK;
}
CHECK_NON_NULL_ARGUMENT_FN_NAME("RegisterNatives", methods, JNI_ERR);
for (jint i = 0; i < method_count; ++i) {
const char* name = methods[i].name;
const char* sig = methods[i].signature;
const void* fnPtr = methods[i].fnPtr;
if (UNLIKELY(name == nullptr)) {
ReportInvalidJNINativeMethod(soa, c.Get(), "method name", i);
return JNI_ERR;
} else if (UNLIKELY(sig == nullptr)) {
ReportInvalidJNINativeMethod(soa, c.Get(), "method signature", i);
return JNI_ERR;
} else if (UNLIKELY(fnPtr == nullptr)) {
ReportInvalidJNINativeMethod(soa, c.Get(), "native function", i);
return JNI_ERR;
}
bool is_fast = false;
// Notes about fast JNI calls:
//
// On a normal JNI call, the calling thread usually transitions
// from the kRunnable state to the kNative state. But if the
// called native function needs to access any Java object, it
// will have to transition back to the kRunnable state.
//
// There is a cost to this double transition. For a JNI call
// that should be quick, this cost may dominate the call cost.
//
// On a fast JNI call, the calling thread avoids this double
// transition by not transitioning from kRunnable to kNative and
// stays in the kRunnable state.
//
// There are risks to using a fast JNI call because it can delay
// a response to a thread suspension request which is typically
// used for a GC root scanning, etc. If a fast JNI call takes a
// long time, it could cause longer thread suspension latency
// and GC pauses.
//
// Thus, fast JNI should be used with care. It should be used
// for a JNI call that takes a short amount of time (eg. no
// long-running loop) and does not block (eg. no locks, I/O,
// etc.)
//
// A '!' prefix in the signature in the JNINativeMethod
// indicates that it's a fast JNI call and the runtime omits the
// thread state transition from kRunnable to kNative at the
// entry.
if (*sig == '!') {
is_fast = true;
++sig;
}
// Note: the right order is to try to find the method locally
// first, either as a direct or a virtual method. Then move to
// the parent.
ArtMethod* m = nullptr;
bool warn_on_going_to_parent = down_cast<JNIEnvExt*>(env)->GetVm()->IsCheckJniEnabled();
for (ObjPtr<mirror::Class> current_class = c.Get();
current_class != nullptr;
current_class = current_class->GetSuperClass()) {
// Search first only comparing methods which are native.
m = FindMethod<true>(current_class, name, sig);
if (m != nullptr) {
break;
}
// Search again comparing to all methods, to find non-native methods that match.
m = FindMethod<false>(current_class, name, sig);
if (m != nullptr) {
break;
}
if (warn_on_going_to_parent) {
LOG(WARNING) << "CheckJNI: method to register \"" << name << "\" not in the given class. "
<< "This is slow, consider changing your RegisterNatives calls.";
warn_on_going_to_parent = false;
}
}
if (m == nullptr) {
c->DumpClass(LOG_STREAM(ERROR), mirror::Class::kDumpClassFullDetail);
LOG(ERROR)
<< "Failed to register native method "
<< c->PrettyDescriptor() << "." << name << sig << " in "
<< c->GetDexCache()->GetLocation()->ToModifiedUtf8();
ThrowNoSuchMethodError(soa, c.Get(), name, sig, "static or non-static");
return JNI_ERR;
} else if (!m->IsNative()) {
LOG(ERROR)
<< "Failed to register non-native method "
<< c->PrettyDescriptor() << "." << name << sig
<< " as native";
ThrowNoSuchMethodError(soa, c.Get(), name, sig, "native");
return JNI_ERR;
}
VLOG(jni) << "[Registering JNI native method " << m->PrettyMethod() << "]";
if (UNLIKELY(is_fast)) {
// There are a few reasons to switch:
// 1) We don't support !bang JNI anymore, it will turn to a hard error later.
// 2) @FastNative is actually faster. At least 1.5x faster than !bang JNI.
// and switching is super easy, remove ! in C code, add annotation in .java code.
// 3) Good chance of hitting DCHECK failures in ScopedFastNativeObjectAccess
// since that checks for presence of @FastNative and not for ! in the descriptor.
LOG(WARNING) << "!bang JNI is deprecated. Switch to @FastNative for " << m->PrettyMethod();
is_fast = false;
// TODO: make this a hard register error in the future.
}
const void* final_function_ptr = class_linker->RegisterNative(soa.Self(), m, fnPtr);
UNUSED(final_function_ptr);
}
return JNI_OK;
}
static jint UnregisterNatives(JNIEnv* env, jclass java_class) {
CHECK_NON_NULL_ARGUMENT_RETURN(java_class, JNI_ERR);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Class> c = soa.Decode<mirror::Class>(java_class);
VLOG(jni) << "[Unregistering JNI native methods for " << mirror::Class::PrettyClass(c) << "]";
size_t unregistered_count = 0;
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
auto pointer_size = class_linker->GetImagePointerSize();
for (auto& m : c->GetMethods(pointer_size)) {
if (m.IsNative()) {
class_linker->UnregisterNative(soa.Self(), &m);
unregistered_count++;
}
}
if (unregistered_count == 0) {
LOG(WARNING) << "JNI UnregisterNatives: attempt to unregister native methods of class '"
<< mirror::Class::PrettyDescriptor(c) << "' that contains no native methods";
}
return JNI_OK;
}
static jint MonitorEnter(JNIEnv* env, jobject java_object) NO_THREAD_SAFETY_ANALYSIS {
CHECK_NON_NULL_ARGUMENT_RETURN(java_object, JNI_ERR);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> o = soa.Decode<mirror::Object>(java_object);
o = o->MonitorEnter(soa.Self());
if (soa.Self()->HoldsLock(o)) {
soa.Env()->monitors_.Add(o);
}
if (soa.Self()->IsExceptionPending()) {
return JNI_ERR;
}
return JNI_OK;
}
static jint MonitorExit(JNIEnv* env, jobject java_object) NO_THREAD_SAFETY_ANALYSIS {
CHECK_NON_NULL_ARGUMENT_RETURN(java_object, JNI_ERR);
ScopedObjectAccess soa(env);
ObjPtr<mirror::Object> o = soa.Decode<mirror::Object>(java_object);
bool remove_mon = soa.Self()->HoldsLock(o);
o->MonitorExit(soa.Self());
if (remove_mon) {
soa.Env()->monitors_.Remove(o);
}
if (soa.Self()->IsExceptionPending()) {
return JNI_ERR;
}
return JNI_OK;
}
static jint GetJavaVM(JNIEnv* env, JavaVM** vm) {
CHECK_NON_NULL_ARGUMENT_RETURN(vm, JNI_ERR);
Runtime* runtime = Runtime::Current();
if (runtime != nullptr) {
*vm = runtime->GetJavaVM();
} else {
*vm = nullptr;
}
return (*vm != nullptr) ? JNI_OK : JNI_ERR;
}
static jobject NewDirectByteBuffer(JNIEnv* env, void* address, jlong capacity) {
if (capacity < 0) {
JavaVmExtFromEnv(env)->JniAbortF("NewDirectByteBuffer", "negative buffer capacity: %" PRId64,
capacity);
return nullptr;
}
if (address == nullptr && capacity != 0) {
JavaVmExtFromEnv(env)->JniAbortF("NewDirectByteBuffer",
"non-zero capacity for nullptr pointer: %" PRId64, capacity);
return nullptr;
}
// At the moment, the capacity of DirectByteBuffer is limited to a signed int.
if (capacity > INT_MAX) {
JavaVmExtFromEnv(env)->JniAbortF("NewDirectByteBuffer",
"buffer capacity greater than maximum jint: %" PRId64,
capacity);
return nullptr;
}
jlong address_arg = reinterpret_cast<jlong>(address);
jint capacity_arg = static_cast<jint>(capacity);
jobject result = env->NewObject(WellKnownClasses::java_nio_DirectByteBuffer,
WellKnownClasses::java_nio_DirectByteBuffer_init,
address_arg, capacity_arg);
return static_cast<JNIEnvExt*>(env)->self_->IsExceptionPending() ? nullptr : result;
}
static void* GetDirectBufferAddress(JNIEnv* env, jobject java_buffer) {
// Return null if |java_buffer| is not defined.
if (java_buffer == nullptr) {
return nullptr;
}
// Return null if |java_buffer| is not a java.nio.Buffer instance.
if (!IsInstanceOf(env, java_buffer, WellKnownClasses::java_nio_Buffer)) {
return nullptr;
}
// Buffer.address is non-null when the |java_buffer| is direct.
return reinterpret_cast<void*>(env->GetLongField(
java_buffer, WellKnownClasses::java_nio_Buffer_address));
}
static jlong GetDirectBufferCapacity(JNIEnv* env, jobject java_buffer) {
if (java_buffer == nullptr) {
return -1;
}
if (!IsInstanceOf(env, java_buffer, WellKnownClasses::java_nio_Buffer)) {
return -1;
}
// When checking the buffer capacity, it's important to note that a zero-sized direct buffer
// may have a null address field which means we can't tell whether it is direct or not.
// We therefore call Buffer.isDirect(). One path that creates such a buffer is
// FileChannel.map() if the file size is zero.
//
// NB GetDirectBufferAddress() does not need to call Buffer.isDirect() since it is only
// able return a valid address if the Buffer address field is not-null.
jboolean direct = env->CallBooleanMethod(java_buffer,
WellKnownClasses::java_nio_Buffer_isDirect);
if (!direct) {
return -1;
}
return static_cast<jlong>(env->GetIntField(
java_buffer, WellKnownClasses::java_nio_Buffer_capacity));
}
static jobjectRefType GetObjectRefType(JNIEnv* env ATTRIBUTE_UNUSED, jobject java_object) {
if (java_object == nullptr) {
return JNIInvalidRefType;
}
// Do we definitely know what kind of reference this is?
IndirectRef ref = reinterpret_cast<IndirectRef>(java_object);
IndirectRefKind kind = IndirectReferenceTable::GetIndirectRefKind(ref);
switch (kind) {
case kLocal:
return JNILocalRefType;
case kGlobal:
return JNIGlobalRefType;
case kWeakGlobal:
return JNIWeakGlobalRefType;
case kJniTransitionOrInvalid:
// Assume value is in a JNI transition frame.
return JNILocalRefType;
}
LOG(FATAL) << "IndirectRefKind[" << kind << "]";
UNREACHABLE();
}
private:
static jint EnsureLocalCapacityInternal(ScopedObjectAccess& soa, jint desired_capacity,
const char* caller)
REQUIRES_SHARED(Locks::mutator_lock_) {
if (desired_capacity < 0) {
LOG(ERROR) << "Invalid capacity given to " << caller << ": " << desired_capacity;
return JNI_ERR;
}
std::string error_msg;
if (!soa.Env()->locals_.EnsureFreeCapacity(static_cast<size_t>(desired_capacity), &error_msg)) {
std::string caller_error = android::base::StringPrintf("%s: %s", caller, error_msg.c_str());
soa.Self()->ThrowOutOfMemoryError(caller_error.c_str());
return JNI_ERR;
}
return JNI_OK;
}
template<typename JniT, typename ArtT>
static JniT NewPrimitiveArray(JNIEnv* env, jsize length) {
ScopedObjectAccess soa(env);
if (UNLIKELY(length < 0)) {
soa.Vm()->JniAbortF("NewPrimitiveArray", "negative array length: %d", length);
return nullptr;
}
ObjPtr<ArtT> result = ArtT::Alloc(soa.Self(), length);
return soa.AddLocalReference<JniT>(result);
}
template <typename JArrayT, typename ElementT, typename ArtArrayT>
static ObjPtr<ArtArrayT> DecodeAndCheckArrayType(ScopedObjectAccess& soa,
JArrayT java_array,
const char* fn_name,
const char* operation)
REQUIRES_SHARED(Locks::mutator_lock_) {
ObjPtr<ArtArrayT> array = soa.Decode<ArtArrayT>(java_array);
ObjPtr<mirror::Class> expected_array_class = GetClassRoot<ArtArrayT>();
if (UNLIKELY(expected_array_class != array->GetClass())) {
soa.Vm()->JniAbortF(fn_name,
"attempt to %s %s primitive array elements with an object of type %s",
operation,
mirror::Class::PrettyDescriptor(
expected_array_class->GetComponentType()).c_str(),
mirror::Class::PrettyDescriptor(array->GetClass()).c_str());
return nullptr;
}
DCHECK_EQ(sizeof(ElementT), array->GetClass()->GetComponentSize());
return array;
}
template <typename ArrayT, typename ElementT, typename ArtArrayT>
static ElementT* GetPrimitiveArray(JNIEnv* env, ArrayT java_array, jboolean* is_copy) {
CHECK_NON_NULL_ARGUMENT(java_array);
ScopedObjectAccess soa(env);
ObjPtr<ArtArrayT> array = DecodeAndCheckArrayType<ArrayT, ElementT, ArtArrayT>(
soa, java_array, "GetArrayElements", "get");
if (UNLIKELY(array == nullptr)) {
return nullptr;
}
// Only make a copy if necessary.
if (Runtime::Current()->GetHeap()->IsMovableObject(array)) {
if (is_copy != nullptr) {
*is_copy = JNI_TRUE;
}
const size_t component_size = sizeof(ElementT);
size_t size = array->GetLength() * component_size;
void* data = new uint64_t[RoundUp(size, 8) / 8];
memcpy(data, array->GetData(), size);
return reinterpret_cast<ElementT*>(data);
} else {
if (is_copy != nullptr) {
*is_copy = JNI_FALSE;
}
return reinterpret_cast<ElementT*>(array->GetData());
}
}
template <typename ArrayT, typename ElementT, typename ArtArrayT>
static void ReleasePrimitiveArray(JNIEnv* env, ArrayT java_array, ElementT* elements, jint mode) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
ObjPtr<ArtArrayT> array = DecodeAndCheckArrayType<ArrayT, ElementT, ArtArrayT>(
soa, java_array, "ReleaseArrayElements", "release");
if (array == nullptr) {
return;
}
ReleasePrimitiveArray(soa, array, sizeof(ElementT), elements, mode);
}
static void ReleasePrimitiveArray(ScopedObjectAccess& soa,
ObjPtr<mirror::Array> array,
size_t component_size,
void* elements,
jint mode)
REQUIRES_SHARED(Locks::mutator_lock_) {
void* array_data = array->GetRawData(component_size, 0);
gc::Heap* heap = Runtime::Current()->GetHeap();
bool is_copy = array_data != elements;
size_t bytes = array->GetLength() * component_size;
if (is_copy) {
// Integrity check: If elements is not the same as the java array's data, it better not be a
// heap address. TODO: This might be slow to check, may be worth keeping track of which
// copies we make?
if (heap->IsNonDiscontinuousSpaceHeapAddress(elements)) {
soa.Vm()->JniAbortF("ReleaseArrayElements",
"invalid element pointer %p, array elements are %p",
reinterpret_cast<void*>(elements), array_data);
return;
}
if (mode != JNI_ABORT) {
memcpy(array_data, elements, bytes);
} else if (kWarnJniAbort && memcmp(array_data, elements, bytes) != 0) {
// Warn if we have JNI_ABORT and the arrays don't match since this is usually an error.
LOG(WARNING) << "Possible incorrect JNI_ABORT in Release*ArrayElements";
soa.Self()->DumpJavaStack(LOG_STREAM(WARNING));
}
}
if (mode != JNI_COMMIT) {
if (is_copy) {
delete[] reinterpret_cast<uint64_t*>(elements);
} else if (heap->IsMovableObject(array)) {
// Non copy to a movable object must means that we had disabled the moving GC.
if (!kUseReadBarrier) {
heap->DecrementDisableMovingGC(soa.Self());
} else {
heap->DecrementDisableThreadFlip(soa.Self());
}
}
}
}
template <typename JArrayT, typename ElementT, typename ArtArrayT>
static void GetPrimitiveArrayRegion(JNIEnv* env, JArrayT java_array,
jsize start, jsize length, ElementT* buf) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
ObjPtr<ArtArrayT> array = DecodeAndCheckArrayType<JArrayT, ElementT, ArtArrayT>(
soa, java_array, "GetPrimitiveArrayRegion", "get region of");
if (array != nullptr) {
if (start < 0 || length < 0 || length > array->GetLength() - start) {
ThrowAIOOBE(soa, array, start, length, "src");
} else {
CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf);
ElementT* data = array->GetData();
memcpy(buf, data + start, length * sizeof(ElementT));
}
}
}
template <typename JArrayT, typename ElementT, typename ArtArrayT>
static void SetPrimitiveArrayRegion(JNIEnv* env, JArrayT java_array,
jsize start, jsize length, const ElementT* buf) {
CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array);
ScopedObjectAccess soa(env);
ObjPtr<ArtArrayT> array = DecodeAndCheckArrayType<JArrayT, ElementT, ArtArrayT>(
soa, java_array, "SetPrimitiveArrayRegion", "set region of");
if (array != nullptr) {
if (start < 0 || length < 0 || length > array->GetLength() - start) {
ThrowAIOOBE(soa, array, start, length, "dst");
} else {
CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf);
ElementT* data = array->GetData();
memcpy(data + start, buf, length * sizeof(ElementT));
}
}
}
};
template<bool kEnableIndexIds>
struct JniNativeInterfaceFunctions {
using JNIImpl = JNI<kEnableIndexIds>;
static constexpr JNINativeInterface gJniNativeInterface = {
nullptr, // reserved0.
nullptr, // reserved1.
nullptr, // reserved2.
nullptr, // reserved3.
JNIImpl::GetVersion,
JNIImpl::DefineClass,
JNIImpl::FindClass,
JNIImpl::FromReflectedMethod,
JNIImpl::FromReflectedField,
JNIImpl::ToReflectedMethod,
JNIImpl::GetSuperclass,
JNIImpl::IsAssignableFrom,
JNIImpl::ToReflectedField,
JNIImpl::Throw,
JNIImpl::ThrowNew,
JNIImpl::ExceptionOccurred,
JNIImpl::ExceptionDescribe,
JNIImpl::ExceptionClear,
JNIImpl::FatalError,
JNIImpl::PushLocalFrame,
JNIImpl::PopLocalFrame,
JNIImpl::NewGlobalRef,
JNIImpl::DeleteGlobalRef,
JNIImpl::DeleteLocalRef,
JNIImpl::IsSameObject,
JNIImpl::NewLocalRef,
JNIImpl::EnsureLocalCapacity,
JNIImpl::AllocObject,
JNIImpl::NewObject,
JNIImpl::NewObjectV,
JNIImpl::NewObjectA,
JNIImpl::GetObjectClass,
JNIImpl::IsInstanceOf,
JNIImpl::GetMethodID,
JNIImpl::CallObjectMethod,
JNIImpl::CallObjectMethodV,
JNIImpl::CallObjectMethodA,
JNIImpl::CallBooleanMethod,
JNIImpl::CallBooleanMethodV,
JNIImpl::CallBooleanMethodA,
JNIImpl::CallByteMethod,
JNIImpl::CallByteMethodV,
JNIImpl::CallByteMethodA,
JNIImpl::CallCharMethod,
JNIImpl::CallCharMethodV,
JNIImpl::CallCharMethodA,
JNIImpl::CallShortMethod,
JNIImpl::CallShortMethodV,
JNIImpl::CallShortMethodA,
JNIImpl::CallIntMethod,
JNIImpl::CallIntMethodV,
JNIImpl::CallIntMethodA,
JNIImpl::CallLongMethod,
JNIImpl::CallLongMethodV,
JNIImpl::CallLongMethodA,
JNIImpl::CallFloatMethod,
JNIImpl::CallFloatMethodV,
JNIImpl::CallFloatMethodA,
JNIImpl::CallDoubleMethod,
JNIImpl::CallDoubleMethodV,
JNIImpl::CallDoubleMethodA,
JNIImpl::CallVoidMethod,
JNIImpl::CallVoidMethodV,
JNIImpl::CallVoidMethodA,
JNIImpl::CallNonvirtualObjectMethod,
JNIImpl::CallNonvirtualObjectMethodV,
JNIImpl::CallNonvirtualObjectMethodA,
JNIImpl::CallNonvirtualBooleanMethod,
JNIImpl::CallNonvirtualBooleanMethodV,
JNIImpl::CallNonvirtualBooleanMethodA,
JNIImpl::CallNonvirtualByteMethod,
JNIImpl::CallNonvirtualByteMethodV,
JNIImpl::CallNonvirtualByteMethodA,
JNIImpl::CallNonvirtualCharMethod,
JNIImpl::CallNonvirtualCharMethodV,
JNIImpl::CallNonvirtualCharMethodA,
JNIImpl::CallNonvirtualShortMethod,
JNIImpl::CallNonvirtualShortMethodV,
JNIImpl::CallNonvirtualShortMethodA,
JNIImpl::CallNonvirtualIntMethod,
JNIImpl::CallNonvirtualIntMethodV,
JNIImpl::CallNonvirtualIntMethodA,
JNIImpl::CallNonvirtualLongMethod,
JNIImpl::CallNonvirtualLongMethodV,
JNIImpl::CallNonvirtualLongMethodA,
JNIImpl::CallNonvirtualFloatMethod,
JNIImpl::CallNonvirtualFloatMethodV,
JNIImpl::CallNonvirtualFloatMethodA,
JNIImpl::CallNonvirtualDoubleMethod,
JNIImpl::CallNonvirtualDoubleMethodV,
JNIImpl::CallNonvirtualDoubleMethodA,
JNIImpl::CallNonvirtualVoidMethod,
JNIImpl::CallNonvirtualVoidMethodV,
JNIImpl::CallNonvirtualVoidMethodA,
JNIImpl::GetFieldID,
JNIImpl::GetObjectField,
JNIImpl::GetBooleanField,
JNIImpl::GetByteField,
JNIImpl::GetCharField,
JNIImpl::GetShortField,
JNIImpl::GetIntField,
JNIImpl::GetLongField,
JNIImpl::GetFloatField,
JNIImpl::GetDoubleField,
JNIImpl::SetObjectField,
JNIImpl::SetBooleanField,
JNIImpl::SetByteField,
JNIImpl::SetCharField,
JNIImpl::SetShortField,
JNIImpl::SetIntField,
JNIImpl::SetLongField,
JNIImpl::SetFloatField,
JNIImpl::SetDoubleField,
JNIImpl::GetStaticMethodID,
JNIImpl::CallStaticObjectMethod,
JNIImpl::CallStaticObjectMethodV,
JNIImpl::CallStaticObjectMethodA,
JNIImpl::CallStaticBooleanMethod,
JNIImpl::CallStaticBooleanMethodV,
JNIImpl::CallStaticBooleanMethodA,
JNIImpl::CallStaticByteMethod,
JNIImpl::CallStaticByteMethodV,
JNIImpl::CallStaticByteMethodA,
JNIImpl::CallStaticCharMethod,
JNIImpl::CallStaticCharMethodV,
JNIImpl::CallStaticCharMethodA,
JNIImpl::CallStaticShortMethod,
JNIImpl::CallStaticShortMethodV,
JNIImpl::CallStaticShortMethodA,
JNIImpl::CallStaticIntMethod,
JNIImpl::CallStaticIntMethodV,
JNIImpl::CallStaticIntMethodA,
JNIImpl::CallStaticLongMethod,
JNIImpl::CallStaticLongMethodV,
JNIImpl::CallStaticLongMethodA,
JNIImpl::CallStaticFloatMethod,
JNIImpl::CallStaticFloatMethodV,
JNIImpl::CallStaticFloatMethodA,
JNIImpl::CallStaticDoubleMethod,
JNIImpl::CallStaticDoubleMethodV,
JNIImpl::CallStaticDoubleMethodA,
JNIImpl::CallStaticVoidMethod,
JNIImpl::CallStaticVoidMethodV,
JNIImpl::CallStaticVoidMethodA,
JNIImpl::GetStaticFieldID,
JNIImpl::GetStaticObjectField,
JNIImpl::GetStaticBooleanField,
JNIImpl::GetStaticByteField,
JNIImpl::GetStaticCharField,
JNIImpl::GetStaticShortField,
JNIImpl::GetStaticIntField,
JNIImpl::GetStaticLongField,
JNIImpl::GetStaticFloatField,
JNIImpl::GetStaticDoubleField,
JNIImpl::SetStaticObjectField,
JNIImpl::SetStaticBooleanField,
JNIImpl::SetStaticByteField,
JNIImpl::SetStaticCharField,
JNIImpl::SetStaticShortField,
JNIImpl::SetStaticIntField,
JNIImpl::SetStaticLongField,
JNIImpl::SetStaticFloatField,
JNIImpl::SetStaticDoubleField,
JNIImpl::NewString,
JNIImpl::GetStringLength,
JNIImpl::GetStringChars,
JNIImpl::ReleaseStringChars,
JNIImpl::NewStringUTF,
JNIImpl::GetStringUTFLength,
JNIImpl::GetStringUTFChars,
JNIImpl::ReleaseStringUTFChars,
JNIImpl::GetArrayLength,
JNIImpl::NewObjectArray,
JNIImpl::GetObjectArrayElement,
JNIImpl::SetObjectArrayElement,
JNIImpl::NewBooleanArray,
JNIImpl::NewByteArray,
JNIImpl::NewCharArray,
JNIImpl::NewShortArray,
JNIImpl::NewIntArray,
JNIImpl::NewLongArray,
JNIImpl::NewFloatArray,
JNIImpl::NewDoubleArray,
JNIImpl::GetBooleanArrayElements,
JNIImpl::GetByteArrayElements,
JNIImpl::GetCharArrayElements,
JNIImpl::GetShortArrayElements,
JNIImpl::GetIntArrayElements,
JNIImpl::GetLongArrayElements,
JNIImpl::GetFloatArrayElements,
JNIImpl::GetDoubleArrayElements,
JNIImpl::ReleaseBooleanArrayElements,
JNIImpl::ReleaseByteArrayElements,
JNIImpl::ReleaseCharArrayElements,
JNIImpl::ReleaseShortArrayElements,
JNIImpl::ReleaseIntArrayElements,
JNIImpl::ReleaseLongArrayElements,
JNIImpl::ReleaseFloatArrayElements,
JNIImpl::ReleaseDoubleArrayElements,
JNIImpl::GetBooleanArrayRegion,
JNIImpl::GetByteArrayRegion,
JNIImpl::GetCharArrayRegion,
JNIImpl::GetShortArrayRegion,
JNIImpl::GetIntArrayRegion,
JNIImpl::GetLongArrayRegion,
JNIImpl::GetFloatArrayRegion,
JNIImpl::GetDoubleArrayRegion,
JNIImpl::SetBooleanArrayRegion,
JNIImpl::SetByteArrayRegion,
JNIImpl::SetCharArrayRegion,
JNIImpl::SetShortArrayRegion,
JNIImpl::SetIntArrayRegion,
JNIImpl::SetLongArrayRegion,
JNIImpl::SetFloatArrayRegion,
JNIImpl::SetDoubleArrayRegion,
JNIImpl::RegisterNatives,
JNIImpl::UnregisterNatives,
JNIImpl::MonitorEnter,
JNIImpl::MonitorExit,
JNIImpl::GetJavaVM,
JNIImpl::GetStringRegion,
JNIImpl::GetStringUTFRegion,
JNIImpl::GetPrimitiveArrayCritical,
JNIImpl::ReleasePrimitiveArrayCritical,
JNIImpl::GetStringCritical,
JNIImpl::ReleaseStringCritical,
JNIImpl::NewWeakGlobalRef,
JNIImpl::DeleteWeakGlobalRef,
JNIImpl::ExceptionCheck,
JNIImpl::NewDirectByteBuffer,
JNIImpl::GetDirectBufferAddress,
JNIImpl::GetDirectBufferCapacity,
JNIImpl::GetObjectRefType,
};
};
const JNINativeInterface* GetJniNativeInterface() {
// The template argument is passed down through the Encode/DecodeArtMethod/Field calls so if
// JniIdType is kPointer the calls will be a simple cast with no branches. This ensures that
// the normal case is still fast.
return Runtime::Current()->GetJniIdType() == JniIdType::kPointer
? &JniNativeInterfaceFunctions<false>::gJniNativeInterface
: &JniNativeInterfaceFunctions<true>::gJniNativeInterface;
}
void (*gJniSleepForeverStub[])() = {
nullptr, // reserved0.
nullptr, // reserved1.
nullptr, // reserved2.
nullptr, // reserved3.
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
SleepForever,
};
const JNINativeInterface* GetRuntimeShutdownNativeInterface() {
return reinterpret_cast<JNINativeInterface*>(&gJniSleepForeverStub);
}
} // namespace art
std::ostream& operator<<(std::ostream& os, const jobjectRefType& rhs) {
switch (rhs) {
case JNIInvalidRefType:
os << "JNIInvalidRefType";
return os;
case JNILocalRefType:
os << "JNILocalRefType";
return os;
case JNIGlobalRefType:
os << "JNIGlobalRefType";
return os;
case JNIWeakGlobalRefType:
os << "JNIWeakGlobalRefType";
return os;
default:
LOG(FATAL) << "jobjectRefType[" << static_cast<int>(rhs) << "]";
UNREACHABLE();
}
}
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