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/*
* Copyright (C) 2017 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 "art_method-inl.h"
#include "base/mutex-inl.h"
#include "scoped_thread_state_change-inl.h"
#include "thread-inl.h"
#include "thread_pool.h"
namespace art {
struct TestClosure : public Closure {
bool first_run_start;
bool first_run_end;
bool second_run;
bool second_run_interleaved;
void Run(Thread* self) override {
CHECK_EQ(self, Thread::Current()) << "Not running on target thread!";
if (!first_run_start) {
CHECK(!second_run);
first_run_start = true;
// Suspend ourself so that we will perform the second run.
{
ScopedObjectAccess soa(self);
self->FullSuspendCheck();
}
first_run_end = true;
} else {
CHECK(!second_run);
CHECK(first_run_start);
second_run = true;
second_run_interleaved = !first_run_end;
}
}
void Check() {
CHECK(first_run_start);
CHECK(first_run_end);
CHECK(second_run);
CHECK(second_run_interleaved);
}
};
static TestClosure gTestClosure = {};
extern "C" JNIEXPORT void JNICALL Java_Main_checkCheckpointsRun(JNIEnv*, jclass) {
gTestClosure.Check();
}
struct SetupClosure : public Closure {
void Run(Thread* self) override {
CHECK_EQ(self, Thread::Current()) << "Not running on target thread!";
ScopedObjectAccess soa(self);
MutexLock tscl_mu(self, *Locks::thread_suspend_count_lock_);
// Both should succeed since we are in runnable and have the lock.
CHECK(self->RequestCheckpoint(&gTestClosure)) << "Could not set first checkpoint.";
CHECK(self->RequestCheckpoint(&gTestClosure)) << "Could not set second checkpoint.";
}
};
static SetupClosure gSetupClosure = {};
extern "C" JNIEXPORT void JNICALL Java_Main_pushCheckpoints(JNIEnv*, jclass, jobject thr) {
Thread* self = Thread::Current();
ScopedObjectAccess soa(self);
MutexLock tll_mu(self, *Locks::thread_list_lock_);
Thread* target = Thread::FromManagedThread(soa, thr);
while (true) {
MutexLock tscl_mu(self, *Locks::thread_suspend_count_lock_);
if (target->RequestCheckpoint(&gSetupClosure)) {
break;
}
}
}
} // namespace art
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