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// Copyright 2015 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 <stdlib.h>
#include "src/heap/safepoint.h"
#ifdef __linux__
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#endif
#include <utility>
#include "src/handles/global-handles.h"
#include "src/heap/gc-tracer.h"
#include "src/heap/incremental-marking.h"
#include "src/heap/spaces.h"
#include "src/init/v8.h"
#include "src/objects/objects-inl.h"
#include "test/cctest/cctest.h"
#include "test/cctest/heap/heap-utils.h"
using v8::IdleTask;
using v8::Task;
using v8::Isolate;
namespace v8 {
namespace internal {
namespace heap {
class MockPlatform : public TestPlatform {
public:
MockPlatform()
: taskrunner_(new MockTaskRunner()),
old_platform_(i::V8::GetCurrentPlatform()) {
// Now that it's completely constructed, make this the current platform.
i::V8::SetPlatformForTesting(this);
}
~MockPlatform() override {
i::V8::SetPlatformForTesting(old_platform_);
for (auto& task : worker_tasks_) {
old_platform_->CallOnWorkerThread(std::move(task));
}
worker_tasks_.clear();
}
std::shared_ptr<v8::TaskRunner> GetForegroundTaskRunner(
v8::Isolate* isolate) override {
return taskrunner_;
}
void CallOnWorkerThread(std::unique_ptr<Task> task) override {
worker_tasks_.push_back(std::move(task));
}
bool IdleTasksEnabled(v8::Isolate* isolate) override { return false; }
bool PendingTask() { return taskrunner_->PendingTask(); }
void PerformTask() { taskrunner_->PerformTask(); }
private:
class MockTaskRunner : public v8::TaskRunner {
public:
void PostTask(std::unique_ptr<v8::Task> task) override {
task_ = std::move(task);
}
void PostNonNestableTask(std::unique_ptr<Task> task) override {
PostTask(std::move(task));
}
void PostDelayedTask(std::unique_ptr<Task> task,
double delay_in_seconds) override {
PostTask(std::move(task));
}
void PostNonNestableDelayedTask(std::unique_ptr<Task> task,
double delay_in_seconds) override {
PostTask(std::move(task));
}
void PostIdleTask(std::unique_ptr<IdleTask> task) override {
UNREACHABLE();
}
bool IdleTasksEnabled() override { return false; }
bool NonNestableTasksEnabled() const override { return true; }
bool NonNestableDelayedTasksEnabled() const override { return true; }
bool PendingTask() { return task_ != nullptr; }
void PerformTask() {
std::unique_ptr<Task> task = std::move(task_);
task->Run();
}
private:
std::unique_ptr<Task> task_;
};
std::shared_ptr<MockTaskRunner> taskrunner_;
std::vector<std::unique_ptr<Task>> worker_tasks_;
v8::Platform* old_platform_;
};
UNINITIALIZED_TEST(IncrementalMarkingUsingTasks) {
if (!i::FLAG_incremental_marking) return;
FLAG_stress_concurrent_allocation = false; // For SimulateFullSpace.
FLAG_stress_incremental_marking = false;
MockPlatform platform;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = CcTest::NewContext(isolate);
v8::Context::Scope context_scope(context);
Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
Heap* heap = i_isolate->heap();
i::heap::SimulateFullSpace(heap->old_space());
i::IncrementalMarking* marking = heap->incremental_marking();
marking->Stop();
{
SafepointScope scope(heap);
heap->tracer()->StartCycle(
GarbageCollector::MARK_COMPACTOR, GarbageCollectionReason::kTesting,
"collector cctest", GCTracer::MarkingType::kIncremental);
marking->Start(i::GarbageCollectionReason::kTesting);
}
CHECK(platform.PendingTask());
while (platform.PendingTask()) {
platform.PerformTask();
}
CHECK(marking->IsStopped());
}
isolate->Dispose();
}
} // namespace heap
} // namespace internal
} // namespace v8
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