gpu: Add GpuFence framework.

gpu/command_buffer/tests/gl_gpu_fence_unittest.cc

+// Copyright 2016 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 <GLES2/gl2.h>
+#include <GLES2/gl2chromium.h>
+#include <GLES2/gl2ext.h>
+#include <GLES2/gl2extchromium.h>
+#include <stdint.h>
+
+#include <memory>
+
+#include "base/bind.h"
+#include "base/process/process_handle.h"
+#include "gpu/command_buffer/client/gles2_implementation.h"
+#include "gpu/command_buffer/service/command_buffer_service.h"
+#include "gpu/command_buffer/service/fence_manager.h"
+#include "gpu/command_buffer/tests/gl_manager.h"
+#include "gpu/command_buffer/tests/gl_test_utils.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/gpu_fence.h"
+#include "ui/gl/gl_fence.h"
+
+using testing::_;
+using testing::IgnoreResult;
+using testing::InvokeWithoutArgs;
+using testing::Invoke;
+using testing::Return;
+using testing::SetArgPointee;
+using testing::StrictMock;
+
+namespace gpu {
+namespace gles2 {
+
+class GpuFenceTest : public testing::Test {
+ protected:
+  void SetUp() override { gl_.Initialize(GLManager::Options()); }
+  void TearDown() override { gl_.Destroy(); }
+
+  GLManager gl_;
+};
+
+// An end to end test that tests the whole GpuFence lifecycle.
+TEST_F(GpuFenceTest, Lifecycle) {
+  // Create the gpu fence.
+  std::unique_ptr<gfx::GpuFence> fence(gl_.CreateGpuFence());
+
+  // Check fence.
+  bool rv = fence->Wait(base::TimeDelta());
+  DCHECK(!rv);
+
+  // Create the GL fence. This should add the fence ID to the FenceManager.
+  GLuint fence_id = glCreateFenceCHROMIUM(fence->AsClientFence());
+  ASSERT_NE(0u, fence_id);
+  ASSERT_TRUE(gl_.decoder()->GetFenceManager()->LookupFence(fence_id) != NULL);
+
+  // Wait for 1us on fence.
+  rv = fence->Wait(base::TimeDelta::FromMicroseconds(1));
+  DCHECK(!rv);
+
+  // Clean up.
+  glDestroyFenceCHROMIUM(fence_id);
+}
+
+}  // namespace gles2
+}  // namespace gpu