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.
79 lines
2.4 KiB
79 lines
2.4 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.
|
|
*/
|
|
|
|
#include <dlfcn.h>
|
|
#include <iostream>
|
|
|
|
#include "base/casts.h"
|
|
#include "base/macros.h"
|
|
#include "jni/java_vm_ext.h"
|
|
#include "jni/jni_env_ext.h"
|
|
#include "thread-current-inl.h"
|
|
|
|
namespace art {
|
|
namespace {
|
|
|
|
static volatile std::atomic<bool> vm_was_shutdown(false);
|
|
static const int kThreadCount = 4;
|
|
|
|
static std::atomic<int> barrier_count(kThreadCount + 1);
|
|
|
|
static void JniThreadBarrierWait() {
|
|
barrier_count--;
|
|
while (barrier_count.load() != 0) {
|
|
usleep(1000);
|
|
}
|
|
}
|
|
|
|
extern "C" JNIEXPORT void JNICALL Java_Main_waitAndCallIntoJniEnv(JNIEnv* env, jclass) {
|
|
// Wait for all threads to enter JNI together.
|
|
JniThreadBarrierWait();
|
|
// Wait until the runtime is shutdown.
|
|
while (!vm_was_shutdown.load()) {
|
|
usleep(1000);
|
|
}
|
|
std::cout << "About to call exception check\n";
|
|
env->ExceptionCheck();
|
|
LOG(ERROR) << "Should not be reached!";
|
|
}
|
|
|
|
// NO_RETURN does not work with extern "C" for target builds.
|
|
extern "C" JNIEXPORT void JNICALL Java_Main_destroyJavaVMAndExit(JNIEnv* env, jclass) {
|
|
// Wait for all threads to enter JNI together.
|
|
JniThreadBarrierWait();
|
|
// Fake up the managed stack so we can detach.
|
|
Thread* const self = Thread::Current();
|
|
self->SetTopOfStack(nullptr);
|
|
self->SetTopOfShadowStack(nullptr);
|
|
JavaVM* vm = down_cast<JNIEnvExt*>(env)->GetVm();
|
|
vm->DetachCurrentThread();
|
|
// Open ourself again to make sure the native library does not get unloaded from
|
|
// underneath us due to DestroyJavaVM. b/28406866
|
|
void* handle = dlopen(kIsDebugBuild ? "libarttestd.so" : "libarttest.so", RTLD_NOW);
|
|
CHECK(handle != nullptr);
|
|
vm->DestroyJavaVM();
|
|
vm_was_shutdown.store(true);
|
|
// Give threads some time to get stuck in ExceptionCheck.
|
|
usleep(1000000);
|
|
if (env != nullptr) {
|
|
// Use env != nullptr to trick noreturn.
|
|
exit(0);
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace art
|