v8/test/cctest/heap/test-concurrent-allocation.cc

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

192 lines
6.0 KiB
C++
Raw Normal View History

// 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-inl.h"
#include "src/heap/safepoint.h"
#include "src/objects/heap-number.h"
#include "src/objects/heap-object.h"
#include "test/cctest/cctest.h"
#include "test/cctest/heap/heap-utils.h"
namespace v8 {
namespace internal {
void CreateFixedArray(Heap* heap, Address start, int size) {
HeapObject object = HeapObject::FromAddress(start);
object.set_map_after_allocation(ReadOnlyRoots(heap).fixed_array_map(),
SKIP_WRITE_BARRIER);
FixedArray array = FixedArray::cast(object);
int length = (size - FixedArray::kHeaderSize) / kTaggedSize;
array.set_length(length);
MemsetTagged(array.data_start(), ReadOnlyRoots(heap).undefined_value(),
length);
}
const int kNumIterations = 2000;
const int kSmallObjectSize = 10 * kTaggedSize;
const int kMediumObjectSize = 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_);
for (int i = 0; i < kNumIterations; i++) {
Address address = local_heap.AllocateRawOrFail(
kSmallObjectSize, AllocationType::kOld, AllocationOrigin::kRuntime,
AllocationAlignment::kWordAligned);
CreateFixedArray(heap_, address, kSmallObjectSize);
address = local_heap.AllocateRawOrFail(
kMediumObjectSize, AllocationType::kOld, AllocationOrigin::kRuntime,
AllocationAlignment::kWordAligned);
CreateFixedArray(heap_, address, kMediumObjectSize);
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;
FLAG_local_heaps = 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);
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();
}
const int kWhiteIterations = 1000;
class ConcurrentBlackAllocationThread final : public v8::base::Thread {
public:
explicit ConcurrentBlackAllocationThread(
Heap* heap, std::vector<Address>* objects, base::Semaphore* sema_white,
base::Semaphore* sema_marking_started)
: v8::base::Thread(base::Thread::Options("ThreadWithLocalHeap")),
heap_(heap),
objects_(objects),
sema_white_(sema_white),
sema_marking_started_(sema_marking_started) {}
void Run() override {
LocalHeap local_heap(heap_);
for (int i = 0; i < kNumIterations; i++) {
if (i == kWhiteIterations) {
ParkedScope scope(&local_heap);
sema_white_->Signal();
sema_marking_started_->Wait();
}
Address address = local_heap.AllocateRawOrFail(
kSmallObjectSize, AllocationType::kOld, AllocationOrigin::kRuntime,
AllocationAlignment::kWordAligned);
objects_->push_back(address);
CreateFixedArray(heap_, address, kSmallObjectSize);
address = local_heap.AllocateRawOrFail(
kMediumObjectSize, AllocationType::kOld, AllocationOrigin::kRuntime,
AllocationAlignment::kWordAligned);
objects_->push_back(address);
CreateFixedArray(heap_, address, kMediumObjectSize);
}
}
Heap* heap_;
std::vector<Address>* objects_;
base::Semaphore* sema_white_;
base::Semaphore* sema_marking_started_;
};
UNINITIALIZED_TEST(ConcurrentBlackAllocation) {
FLAG_concurrent_allocation = true;
FLAG_local_heaps = 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);
Heap* heap = i_isolate->heap();
std::vector<Address> objects;
base::Semaphore sema_white(0);
base::Semaphore sema_marking_started(0);
auto thread = std::make_unique<ConcurrentBlackAllocationThread>(
heap, &objects, &sema_white, &sema_marking_started);
CHECK(thread->Start());
sema_white.Wait();
heap->StartIncrementalMarking(i::Heap::kNoGCFlags,
i::GarbageCollectionReason::kTesting);
sema_marking_started.Signal();
thread->Join();
const int kObjectsAllocatedPerIteration = 2;
for (int i = 0; i < kNumIterations * kObjectsAllocatedPerIteration; i++) {
Address address = objects[i];
HeapObject object = HeapObject::FromAddress(address);
if (i < kWhiteIterations * kObjectsAllocatedPerIteration) {
CHECK(heap->incremental_marking()->marking_state()->IsWhite(object));
} else {
CHECK(heap->incremental_marking()->marking_state()->IsBlack(object));
}
}
isolate->Dispose();
}
} // namespace internal
} // namespace v8