Revert "Revert 113479 - Revert "Revert 113250 - Add CommandBuffer::SetGetBuffer""

gpu/command_buffer/service/gpu_scheduler_unittest.cc

 // Copyright (c) 2011 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.
 
 #include "base/message_loop.h"
 #include "gpu/command_buffer/common/command_buffer_mock.h"
 #include "gpu/command_buffer/service/gpu_scheduler.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder_mock.h"
 #include "gpu/command_buffer/service/mocks.h"
@@ skipping 12 matching lines @@
 using testing::SetArgumentPointee;
 using testing::StrictMock;
 
 namespace gpu {
 
 const size_t kRingBufferSize = 1024;
 const size_t kRingBufferEntries = kRingBufferSize / sizeof(CommandBufferEntry);
 
 class GpuSchedulerTest : public testing::Test {
  protected:
+  static const int32 kTransferBufferId = 123;
+
   virtual void SetUp() {
     shared_memory_.reset(new ::base::SharedMemory);
     shared_memory_->CreateAndMapAnonymous(kRingBufferSize);
     buffer_ = static_cast<int32*>(shared_memory_->memory());
     shared_memory_buffer_.ptr = buffer_;
     shared_memory_buffer_.size = kRingBufferSize;
     memset(buffer_, 0, kRingBufferSize);
 
     command_buffer_.reset(new MockCommandBuffer);
-    ON_CALL(*command_buffer_.get(), GetRingBuffer())
-      .WillByDefault(Return(shared_memory_buffer_));
 
     CommandBuffer::State default_state;
     default_state.num_entries = kRingBufferEntries;
     ON_CALL(*command_buffer_.get(), GetState())
       .WillByDefault(Return(default_state));
 
-    async_api_.reset(new StrictMock<AsyncAPIMock>);
-
     decoder_.reset(new gles2::MockGLES2Decoder());
-
-    parser_ = new CommandParser(buffer_,
-                                kRingBufferEntries,
-                                0,
-                                kRingBufferEntries,
-                                0,
-                                async_api_.get());
-
     scheduler_.reset(new gpu::GpuScheduler(command_buffer_.get(),
                                            decoder_.get(),
-                                           parser_));
+                                           NULL));
+    EXPECT_CALL(*command_buffer_, GetTransferBuffer(kTransferBufferId))
+       .WillOnce(Return(shared_memory_buffer_));
+    EXPECT_CALL(*command_buffer_, SetGetOffset(0));
+    EXPECT_TRUE(scheduler_->SetGetBuffer(kTransferBufferId));
   }
 
   virtual void TearDown() {
     // Ensure that any unexpected tasks posted by the GPU scheduler are executed
     // in order to fail the test.
     MessageLoop::current()->RunAllPending();
   }
 
   error::Error GetError() {
     return command_buffer_->GetState().error;
   }
 
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool autorelease_pool_;
 #endif
   MessageLoop message_loop;
   scoped_ptr<MockCommandBuffer> command_buffer_;
   scoped_ptr<base::SharedMemory> shared_memory_;
   Buffer shared_memory_buffer_;
   int32* buffer_;
   scoped_ptr<gles2::MockGLES2Decoder> decoder_;
-  CommandParser* parser_;
-  scoped_ptr<AsyncAPIMock> async_api_;
   scoped_ptr<GpuScheduler> scheduler_;
 };
 
 TEST_F(GpuSchedulerTest, SchedulerDoesNothingIfRingBufferIsEmpty) {
   CommandBuffer::State state;
 
   state.put_offset = 0;
   EXPECT_CALL(*command_buffer_, GetState())
     .WillRepeatedly(Return(state));
 
   EXPECT_CALL(*command_buffer_, SetParseError(_))
     .Times(0);
 
   scheduler_->PutChanged();
 }
 
+TEST_F(GpuSchedulerTest, GetSetBuffer) {
+  CommandBuffer::State state;
+
+  // Set the get offset to something not 0.
+  EXPECT_CALL(*command_buffer_, SetGetOffset(2));
+  scheduler_->SetGetOffset(2);
+  EXPECT_EQ(2, scheduler_->GetGetOffset());
+
+  // Set the buffer.
+  EXPECT_CALL(*command_buffer_, GetTransferBuffer(kTransferBufferId))
+     .WillOnce(Return(shared_memory_buffer_));
+  EXPECT_CALL(*command_buffer_, SetGetOffset(0));
+  EXPECT_TRUE(scheduler_->SetGetBuffer(kTransferBufferId));
+
+  // Check the get offset was reset.
+  EXPECT_EQ(0, scheduler_->GetGetOffset());
+}
+
 TEST_F(GpuSchedulerTest, ProcessesOneCommand) {
   CommandHeader* header = reinterpret_cast<CommandHeader*>(&buffer_[0]);
   header[0].command = 7;
   header[0].size = 2;
   buffer_[1] = 123;
 
   CommandBuffer::State state;
 
   state.put_offset = 2;
   EXPECT_CALL(*command_buffer_, GetState())
     .WillRepeatedly(Return(state));
   EXPECT_CALL(*command_buffer_, SetGetOffset(2));
 
-  EXPECT_CALL(*async_api_, DoCommand(7, 1, &buffer_[0]))
+  EXPECT_CALL(*decoder_, DoCommand(7, 1, &buffer_[0]))
     .WillOnce(Return(error::kNoError));
 
   EXPECT_CALL(*command_buffer_, SetParseError(_))
     .Times(0);
 
   scheduler_->PutChanged();
 }
 
 TEST_F(GpuSchedulerTest, ProcessesTwoCommands) {
   CommandHeader* header = reinterpret_cast<CommandHeader*>(&buffer_[0]);
   header[0].command = 7;
   header[0].size = 2;
   buffer_[1] = 123;
   header[2].command = 8;
   header[2].size = 1;
 
   CommandBuffer::State state;
 
   state.put_offset = 3;
   EXPECT_CALL(*command_buffer_, GetState())
     .WillRepeatedly(Return(state));
 
-  EXPECT_CALL(*async_api_, DoCommand(7, 1, &buffer_[0]))
+  EXPECT_CALL(*decoder_, DoCommand(7, 1, &buffer_[0]))
     .WillOnce(Return(error::kNoError));
   EXPECT_CALL(*command_buffer_, SetGetOffset(2));
 
-  EXPECT_CALL(*async_api_, DoCommand(8, 0, &buffer_[2]))
+  EXPECT_CALL(*decoder_, DoCommand(8, 0, &buffer_[2]))
     .WillOnce(Return(error::kNoError));
   EXPECT_CALL(*command_buffer_, SetGetOffset(3));
 
   scheduler_->PutChanged();
 }
 
 TEST_F(GpuSchedulerTest, SetsErrorCodeOnCommandBuffer) {
   CommandHeader* header = reinterpret_cast<CommandHeader*>(&buffer_[0]);
   header[0].command = 7;
   header[0].size = 1;
 
   CommandBuffer::State state;
 
   state.put_offset = 1;
   EXPECT_CALL(*command_buffer_, GetState())
     .WillRepeatedly(Return(state));
 
-  EXPECT_CALL(*async_api_, DoCommand(7, 0, &buffer_[0]))
+  EXPECT_CALL(*decoder_, DoCommand(7, 0, &buffer_[0]))
     .WillOnce(Return(
         error::kUnknownCommand));
   EXPECT_CALL(*command_buffer_, SetGetOffset(1));
 
+  EXPECT_CALL(*command_buffer_, SetContextLostReason(_));
   EXPECT_CALL(*decoder_, GetContextLostReason())
     .WillOnce(Return(error::kUnknown));
   EXPECT_CALL(*command_buffer_,
       SetParseError(error::kUnknownCommand));
 
   scheduler_->PutChanged();
 }
 
 TEST_F(GpuSchedulerTest, ProcessCommandsDoesNothingAfterError) {
   CommandBuffer::State state;
@@ skipping 22 matching lines @@
 
   EXPECT_EQ(kRingBufferSize, scheduler_->GetSharedMemoryBuffer(7).size);
 }
 
 TEST_F(GpuSchedulerTest, SetTokenForwardsToCommandBuffer) {
   EXPECT_CALL(*command_buffer_, SetToken(7));
   scheduler_->set_token(7);
 }
 
 }  // namespace gpu