ui: Add libsync GLFence implementation.

content/browser/gpu/browser_gpu_memory_buffer_manager.cc

 // Copyright 2014 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 "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/trace_event/process_memory_dump.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/common/child_process_host_impl.h"
 #include "content/common/generic_shared_memory_id_generator.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/ipc/client/gpu_fence_impl.h"
+#include "gpu/ipc/client/gpu_fence_impl_shared_event.h"
 #include "gpu/ipc/client/gpu_memory_buffer_impl.h"
 #include "gpu/ipc/client/gpu_memory_buffer_impl_shared_memory.h"
 #include "gpu/ipc/common/gpu_memory_buffer_support.h"
 #include "ui/gfx/buffer_format_util.h"
 #include "ui/gfx/gpu_memory_buffer_tracing.h"
 #include "ui/gl/gl_switches.h"
 
+#if defined(OS_LINUX)
+#include "gpu/ipc/client/gpu_fence_impl_libsync.h"
+#endif
+
 namespace content {
 namespace {
 
 void HostCreateGpuMemoryBuffer(
     gpu::SurfaceHandle surface_handle,
     GpuProcessHost* host,
     gfx::GpuMemoryBufferId id,
     const gfx::Size& size,
     gfx::BufferFormat format,
     gfx::BufferUsage usage,
@@ skipping 258 matching lines @@
 }
 
 void BrowserGpuMemoryBufferManager::SetDestructionSyncToken(
     gfx::GpuMemoryBuffer* buffer,
     const gpu::SyncToken& sync_token) {
   static_cast<gpu::GpuMemoryBufferImpl*>(buffer)->set_destruction_sync_token(
       sync_token);
 }
 
 std::unique_ptr<gfx::GpuFence> BrowserGpuMemoryBufferManager::CreateGpuFence() {
-  std::unique_ptr<gpu::GpuFenceImpl> fence(new gpu::GpuFenceImpl);
+  std::unique_ptr<gpu::GpuFenceImpl> fence(new gpu::GpuFenceImplSharedEvent);
   return std::move(fence);
 }
 
 std::unique_ptr<gfx::GpuFence>
 BrowserGpuMemoryBufferManager::CreateGpuFenceFromHandle(
     const gfx::GpuFenceHandle& handle) {
+#if defined(OS_LINUX)
+  if (handle.fd.fd >= 0)
+    return base::MakeUnique<gpu::GpuFenceImplLibsync>(handle.fd);
+#endif
   return nullptr;
 }
 
 gfx::GpuFence* BrowserGpuMemoryBufferManager::GpuFenceFromClientFence(
     ClientFence fence) {
   return gpu::GpuFenceImpl::FromClientFence(fence);
 }
 
 bool BrowserGpuMemoryBufferManager::OnMemoryDump(
     const base::trace_event::MemoryDumpArgs& args,
@@ skipping 384 matching lines @@
       format(format),
       usage(usage),
       gpu_host_id(gpu_host_id) {}
 
 BrowserGpuMemoryBufferManager::BufferInfo::BufferInfo(const BufferInfo& other) =
     default;
 
 BrowserGpuMemoryBufferManager::BufferInfo::~BufferInfo() {}
 
 }  // namespace content