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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "testing/gtest/include/gtest/gtest.h"
#include "include/libplatform/libplatform.h"
#include "include/v8-platform.h"
#include "include/v8.h"
#include "src/base/macros.h"
#include "src/base/platform/semaphore.h"
#include "src/execution.h"
#include "src/isolate.h"
#include "src/v8.h"
#include "test/unittests/test-utils.h"
namespace v8 {
typedef TestWithIsolate IsolateTest;
namespace {
class MemoryPressureTask : public v8::Task {
public:
MemoryPressureTask(Isolate* isolate, base::Semaphore* semaphore)
: isolate_(isolate), semaphore_(semaphore) {}
~MemoryPressureTask() override = default;
// v8::Task implementation.
void Run() override {
isolate_->MemoryPressureNotification(MemoryPressureLevel::kCritical);
semaphore_->Signal();
}
private:
Isolate* isolate_;
base::Semaphore* semaphore_;
DISALLOW_COPY_AND_ASSIGN(MemoryPressureTask);
};
} // namespace
// Check that triggering a memory pressure notification on the isolate thread
// doesn't request a GC interrupt.
TEST_F(IsolateTest, MemoryPressureNotificationForeground) {
internal::Isolate* i_isolate =
reinterpret_cast<internal::Isolate*>(isolate());
ASSERT_FALSE(i_isolate->stack_guard()->CheckGC());
isolate()->MemoryPressureNotification(MemoryPressureLevel::kCritical);
ASSERT_FALSE(i_isolate->stack_guard()->CheckGC());
}
// Check that triggering a memory pressure notification on an background thread
// requests a GC interrupt.
TEST_F(IsolateTest, MemoryPressureNotificationBackground) {
internal::Isolate* i_isolate =
reinterpret_cast<internal::Isolate*>(isolate());
base::Semaphore semaphore(0);
internal::V8::GetCurrentPlatform()->CallOnBackgroundThread(
new MemoryPressureTask(isolate(), &semaphore),
v8::Platform::kShortRunningTask);
semaphore.Wait();
ASSERT_TRUE(i_isolate->stack_guard()->CheckGC());
v8::platform::PumpMessageLoop(internal::V8::GetCurrentPlatform(), isolate());
}
} // namespace v8
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