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// Copyright 2020 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 <memory>
#include "src/api/api.h"
#include "src/base/platform/condition-variable.h"
#include "src/base/platform/mutex.h"
#include "src/base/platform/semaphore.h"
#include "src/common/globals.h"
#include "src/handles/handles-inl.h"
#include "src/handles/local-handles-inl.h"
#include "src/handles/persistent-handles.h"
#include "src/heap/concurrent-allocator-inl.h"
#include "src/heap/heap.h"
#include "src/heap/local-heap.h"
#include "src/heap/safepoint.h"
#include "src/objects/heap-number.h"
#include "test/cctest/cctest.h"
#include "test/cctest/heap/heap-utils.h"
namespace v8 {
namespace internal {
const int kNumIterations = 2000;
const int kObjectSize = 10 * kTaggedSize;
const int kLargeObjectSize = 8 * KB;
class ConcurrentAllocationThread final : public v8::base::Thread {
public:
explicit ConcurrentAllocationThread(Heap* heap, std::atomic<int>* pending)
: v8::base::Thread(base::Thread::Options("ThreadWithLocalHeap")),
heap_(heap),
pending_(pending) {}
void Run() override {
LocalHeap local_heap(heap_);
ConcurrentAllocator* allocator = local_heap.old_space_allocator();
for (int i = 0; i < kNumIterations; i++) {
Address address = allocator->AllocateOrFail(
kObjectSize, AllocationAlignment::kWordAligned,
AllocationOrigin::kRuntime);
heap_->CreateFillerObjectAt(address, kObjectSize,
ClearRecordedSlots::kNo);
address = allocator->AllocateOrFail(kLargeObjectSize,
AllocationAlignment::kWordAligned,
AllocationOrigin::kRuntime);
heap_->CreateFillerObjectAt(address, kLargeObjectSize,
ClearRecordedSlots::kNo);
if (i % 10 == 0) {
local_heap.Safepoint();
}
}
pending_->fetch_sub(1);
}
Heap* heap_;
std::atomic<int>* pending_;
};
UNINITIALIZED_TEST(ConcurrentAllocationInOldSpace) {
FLAG_max_old_space_size = 32;
FLAG_concurrent_allocation = true;
v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
v8::Isolate* isolate = v8::Isolate::New(create_params);
Isolate* i_isolate = reinterpret_cast<Isolate*>(isolate);
FLAG_local_heaps = true;
std::vector<std::unique_ptr<ConcurrentAllocationThread>> threads;
const int kThreads = 4;
std::atomic<int> pending(kThreads);
for (int i = 0; i < kThreads; i++) {
auto thread = std::make_unique<ConcurrentAllocationThread>(
i_isolate->heap(), &pending);
CHECK(thread->Start());
threads.push_back(std::move(thread));
}
while (pending > 0) {
v8::platform::PumpMessageLoop(i::V8::GetCurrentPlatform(), isolate);
}
for (auto& thread : threads) {
thread->Join();
}
isolate->Dispose();
}
} // namespace internal
} // namespace v8
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