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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file contains the tests for the RingBuffer class.
#include "gpu/command_buffer/client/ring_buffer.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/message_loop/message_loop.h"
#include "gpu/command_buffer/client/cmd_buffer_helper.h"
#include "gpu/command_buffer/service/cmd_buffer_engine.h"
#include "gpu/command_buffer/service/command_buffer_service.h"
#include "gpu/command_buffer/service/gpu_scheduler.h"
#include "gpu/command_buffer/service/mocks.h"
#include "gpu/command_buffer/service/transfer_buffer_manager.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(OS_MACOSX)
#include "base/mac/scoped_nsautorelease_pool.h"
#endif
namespace gpu {
using testing::Return;
using testing::Mock;
using testing::Truly;
using testing::Sequence;
using testing::DoAll;
using testing::Invoke;
using testing::_;
class BaseRingBufferTest : public testing::Test {
protected:
static const unsigned int kBaseOffset = 128;
static const unsigned int kBufferSize = 1024;
static const unsigned int kAlignment = 4;
void RunPendingSetToken() {
for (std::vector<const void*>::iterator it = set_token_arguments_.begin();
it != set_token_arguments_.end();
++it) {
api_mock_->SetToken(cmd::kSetToken, 1, *it);
}
set_token_arguments_.clear();
delay_set_token_ = false;
}
void SetToken(unsigned int command,
unsigned int arg_count,
const void* _args) {
EXPECT_EQ(static_cast<unsigned int>(cmd::kSetToken), command);
EXPECT_EQ(1u, arg_count);
if (delay_set_token_)
set_token_arguments_.push_back(_args);
else
api_mock_->SetToken(cmd::kSetToken, 1, _args);
}
void SetUp() override {
delay_set_token_ = false;
api_mock_.reset(new AsyncAPIMock(true));
// ignore noops in the mock - we don't want to inspect the internals of the
// helper.
EXPECT_CALL(*api_mock_, DoCommand(cmd::kNoop, 0, _))
.WillRepeatedly(Return(error::kNoError));
// Forward the SetToken calls to the engine
EXPECT_CALL(*api_mock_.get(), DoCommand(cmd::kSetToken, 1, _))
.WillRepeatedly(DoAll(Invoke(this, &BaseRingBufferTest::SetToken),
Return(error::kNoError)));
{
TransferBufferManager* manager = new TransferBufferManager();
transfer_buffer_manager_.reset(manager);
EXPECT_TRUE(manager->Initialize());
}
command_buffer_.reset(
new CommandBufferService(transfer_buffer_manager_.get()));
EXPECT_TRUE(command_buffer_->Initialize());
gpu_scheduler_.reset(new GpuScheduler(
command_buffer_.get(), api_mock_.get(), NULL));
command_buffer_->SetPutOffsetChangeCallback(base::Bind(
&GpuScheduler::PutChanged, base::Unretained(gpu_scheduler_.get())));
command_buffer_->SetGetBufferChangeCallback(base::Bind(
&GpuScheduler::SetGetBuffer, base::Unretained(gpu_scheduler_.get())));
api_mock_->set_engine(gpu_scheduler_.get());
helper_.reset(new CommandBufferHelper(command_buffer_.get()));
helper_->Initialize(kBufferSize);
}
int32 GetToken() {
return command_buffer_->GetLastState().token;
}
#if defined(OS_MACOSX)
base::mac::ScopedNSAutoreleasePool autorelease_pool_;
#endif
base::MessageLoop message_loop_;
scoped_ptr<AsyncAPIMock> api_mock_;
scoped_ptr<TransferBufferManagerInterface> transfer_buffer_manager_;
scoped_ptr<CommandBufferService> command_buffer_;
scoped_ptr<GpuScheduler> gpu_scheduler_;
scoped_ptr<CommandBufferHelper> helper_;
std::vector<const void*> set_token_arguments_;
bool delay_set_token_;
scoped_ptr<int8[]> buffer_;
int8* buffer_start_;
};
#ifndef _MSC_VER
const unsigned int BaseRingBufferTest::kBaseOffset;
const unsigned int BaseRingBufferTest::kBufferSize;
#endif
// Test fixture for RingBuffer test - Creates a RingBuffer, using a
// CommandBufferHelper with a mock AsyncAPIInterface for its interface (calling
// it directly, not through the RPC mechanism), making sure Noops are ignored
// and SetToken are properly forwarded to the engine.
class RingBufferTest : public BaseRingBufferTest {
protected:
void SetUp() override {
BaseRingBufferTest::SetUp();
buffer_.reset(new int8[kBufferSize + kBaseOffset]);
buffer_start_ = buffer_.get() + kBaseOffset;
allocator_.reset(new RingBuffer(kAlignment, kBaseOffset, kBufferSize,
helper_.get(), buffer_start_));
}
void TearDown() override {
// If the GpuScheduler posts any tasks, this forces them to run.
base::MessageLoop::current()->RunUntilIdle();
BaseRingBufferTest::TearDown();
}
scoped_ptr<RingBuffer> allocator_;
};
// Checks basic alloc and free.
TEST_F(RingBufferTest, TestBasic) {
const unsigned int kSize = 16;
EXPECT_EQ(kBufferSize, allocator_->GetLargestFreeOrPendingSize());
EXPECT_EQ(kBufferSize, allocator_->GetLargestFreeSizeNoWaiting());
void* pointer = allocator_->Alloc(kSize);
EXPECT_GE(kBufferSize, allocator_->GetOffset(pointer) - kBaseOffset + kSize);
EXPECT_EQ(kBufferSize, allocator_->GetLargestFreeOrPendingSize());
EXPECT_EQ(kBufferSize - kSize, allocator_->GetLargestFreeSizeNoWaiting());
int32 token = helper_->InsertToken();
allocator_->FreePendingToken(pointer, token);
}
// Checks the free-pending-token mechanism.
TEST_F(RingBufferTest, TestFreePendingToken) {
const unsigned int kSize = 16;
const unsigned int kAllocCount = kBufferSize / kSize;
CHECK(kAllocCount * kSize == kBufferSize);
delay_set_token_ = true;
// Allocate several buffers to fill in the memory.
int32 tokens[kAllocCount];
for (unsigned int ii = 0; ii < kAllocCount; ++ii) {
void* pointer = allocator_->Alloc(kSize);
EXPECT_GE(kBufferSize,
allocator_->GetOffset(pointer) - kBaseOffset + kSize);
tokens[ii] = helper_->InsertToken();
allocator_->FreePendingToken(pointer, tokens[ii]);
}
EXPECT_EQ(kBufferSize - (kSize * kAllocCount),
allocator_->GetLargestFreeSizeNoWaiting());
RunPendingSetToken();
// This allocation will need to reclaim the space freed above, so that should
// process the commands until a token is passed.
void* pointer1 = allocator_->Alloc(kSize);
EXPECT_EQ(kBaseOffset, allocator_->GetOffset(pointer1));
// Check that the token has indeed passed.
EXPECT_LE(tokens[0], GetToken());
allocator_->FreePendingToken(pointer1, helper_->InsertToken());
}
// Tests GetLargestFreeSizeNoWaiting
TEST_F(RingBufferTest, TestGetLargestFreeSizeNoWaiting) {
EXPECT_EQ(kBufferSize, allocator_->GetLargestFreeSizeNoWaiting());
void* pointer = allocator_->Alloc(kBufferSize);
EXPECT_EQ(0u, allocator_->GetLargestFreeSizeNoWaiting());
allocator_->FreePendingToken(pointer, helper_->InsertToken());
}
TEST_F(RingBufferTest, TestFreeBug) {
// The first and second allocations must not match.
const unsigned int kAlloc1 = 3*kAlignment;
const unsigned int kAlloc2 = 20;
void* pointer = allocator_->Alloc(kAlloc1);
EXPECT_EQ(kBufferSize - kAlloc1, allocator_->GetLargestFreeSizeNoWaiting());
allocator_->FreePendingToken(pointer, helper_.get()->InsertToken());
pointer = allocator_->Alloc(kAlloc2);
EXPECT_EQ(kBufferSize - kAlloc1 - kAlloc2,
allocator_->GetLargestFreeSizeNoWaiting());
allocator_->FreePendingToken(pointer, helper_.get()->InsertToken());
pointer = allocator_->Alloc(kBufferSize);
EXPECT_EQ(0u, allocator_->GetLargestFreeSizeNoWaiting());
allocator_->FreePendingToken(pointer, helper_.get()->InsertToken());
}
} // namespace gpu
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