You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
149 lines
5.9 KiB
149 lines
5.9 KiB
/*
|
|
* Copyright (C) 2016 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.
|
|
*/
|
|
|
|
#ifndef ART_RUNTIME_METHOD_HANDLES_H_
|
|
#define ART_RUNTIME_METHOD_HANDLES_H_
|
|
|
|
#include <ostream>
|
|
|
|
#include "dex/dex_instruction.h"
|
|
#include "handle.h"
|
|
#include "jvalue.h"
|
|
#include "mirror/class.h"
|
|
|
|
namespace art {
|
|
|
|
class ShadowFrame;
|
|
|
|
namespace mirror {
|
|
class MethodHandle;
|
|
class MethodType;
|
|
} // namespace mirror
|
|
|
|
// Returns true if there is a possible conversion from |from| to |to|
|
|
// for a MethodHandle parameter.
|
|
bool IsParameterTypeConvertible(ObjPtr<mirror::Class> from,
|
|
ObjPtr<mirror::Class> to);
|
|
|
|
// Returns true if there is a possible conversion from |from| to |to|
|
|
// for the return type of a MethodHandle.
|
|
bool IsReturnTypeConvertible(ObjPtr<mirror::Class> from,
|
|
ObjPtr<mirror::Class> to);
|
|
|
|
// Performs a conversion from type |from| to a distinct type |to| as
|
|
// part of conversion of |caller_type| to |callee_type|. The value to
|
|
// be converted is in |value|. Returns true on success and updates
|
|
// |value| with the converted value, false otherwise.
|
|
bool ConvertJValueCommon(Handle<mirror::MethodType> callsite_type,
|
|
Handle<mirror::MethodType> callee_type,
|
|
ObjPtr<mirror::Class> from,
|
|
ObjPtr<mirror::Class> to,
|
|
JValue* value)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Converts the value of the argument at position |index| from type
|
|
// expected by |callee_type| to type used by |callsite_type|. |value|
|
|
// represents the value to be converted. Returns true on success and
|
|
// updates |value|, false otherwise.
|
|
ALWAYS_INLINE bool ConvertArgumentValue(Handle<mirror::MethodType> callsite_type,
|
|
Handle<mirror::MethodType> callee_type,
|
|
int index,
|
|
JValue* value)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Converts the return value from return type yielded by
|
|
// |callee_type| to the return type yielded by
|
|
// |callsite_type|. |value| represents the value to be
|
|
// converted. Returns true on success and updates |value|, false
|
|
// otherwise.
|
|
ALWAYS_INLINE bool ConvertReturnValue(Handle<mirror::MethodType> callsite_type,
|
|
Handle<mirror::MethodType> callee_type,
|
|
JValue* value)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
// Perform argument conversions between |callsite_type| (the type of the
|
|
// incoming arguments) and |callee_type| (the type of the method being
|
|
// invoked). These include widening and narrowing conversions as well as
|
|
// boxing and unboxing. Returns true on success, on false on failure. A
|
|
// pending exception will always be set on failure.
|
|
//
|
|
// The values to be converted are read from an input source (of type G)
|
|
// that provides three methods :
|
|
//
|
|
// class G {
|
|
// // Used to read the next boolean/short/int or float value from the
|
|
// // source.
|
|
// uint32_t Get();
|
|
//
|
|
// // Used to the read the next reference value from the source.
|
|
// ObjPtr<mirror::Object> GetReference();
|
|
//
|
|
// // Used to read the next double or long value from the source.
|
|
// int64_t GetLong();
|
|
// }
|
|
//
|
|
// After conversion, the values are written to an output sink (of type S)
|
|
// that provides three methods :
|
|
//
|
|
// class S {
|
|
// void Set(uint32_t);
|
|
// void SetReference(ObjPtr<mirror::Object>)
|
|
// void SetLong(int64_t);
|
|
// }
|
|
//
|
|
// The semantics and usage of the Set methods are analagous to the getter
|
|
// class.
|
|
//
|
|
// This method is instantiated in three different scenarions :
|
|
// - <S = ShadowFrameSetter, G = ShadowFrameGetter> : copying from shadow
|
|
// frame to shadow frame, used in a regular polymorphic non-exact invoke.
|
|
// - <S = EmulatedShadowFrameAccessor, G = ShadowFrameGetter> : entering into
|
|
// a transformer method from a polymorphic invoke.
|
|
// - <S = ShadowFrameStter, G = EmulatedStackFrameAccessor> : entering into
|
|
// a regular poly morphic invoke from a transformer method.
|
|
//
|
|
// TODO(narayan): If we find that the instantiations of this function take
|
|
// up too much space, we can make G / S abstract base classes that are
|
|
// overridden by concrete classes.
|
|
template <typename G, typename S>
|
|
bool PerformConversions(Thread* self,
|
|
Handle<mirror::MethodType> callsite_type,
|
|
Handle<mirror::MethodType> callee_type,
|
|
G* getter,
|
|
S* setter,
|
|
int32_t start_index,
|
|
int32_t end_index) REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
bool MethodHandleInvoke(Thread* self,
|
|
ShadowFrame& shadow_frame,
|
|
Handle<mirror::MethodHandle> method_handle,
|
|
Handle<mirror::MethodType> callsite_type,
|
|
const InstructionOperands* const args,
|
|
JValue* result)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
bool MethodHandleInvokeExact(Thread* self,
|
|
ShadowFrame& shadow_frame,
|
|
Handle<mirror::MethodHandle> method_handle,
|
|
Handle<mirror::MethodType> callsite_type,
|
|
const InstructionOperands* const args,
|
|
JValue* result)
|
|
REQUIRES_SHARED(Locks::mutator_lock_);
|
|
|
|
} // namespace art
|
|
|
|
#endif // ART_RUNTIME_METHOD_HANDLES_H_
|