gpu: Thread-safe command buffer state lookup.

gpu/command_buffer/client/gles2_implementation.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 233 matching lines @@
       const char* function_name, GLuint id, GLenum pname, GLuint64* params);
 
   void FreeUnusedSharedMemory();
   void FreeEverything();
 
   void FreeSharedMemory(void*) override;
 
   // ContextSupport implementation.
   void SignalSyncToken(const gpu::SyncToken& sync_token,
                        const base::Closure& callback) override;
+  bool IsFenceSyncReleased(uint64_t release_count) override;
   void SignalQuery(uint32_t query, const base::Closure& callback) override;
   void SetAggressivelyFreeResources(bool aggressively_free_resources) override;
 
   // base::trace_event::MemoryDumpProvider implementation.
   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
                     base::trace_event::ProcessMemoryDump* pmd) override;
 
   const scoped_refptr<ShareGroup>& share_group() const { return share_group_; }
 
   const Capabilities& capabilities() const {
@@ skipping 545 matching lines @@
   std::unique_ptr<IdAllocator> query_id_allocator_;
 
   std::unique_ptr<BufferTracker> buffer_tracker_;
 
   base::Callback<void(const char*, int32_t)> error_message_callback_;
   base::Closure lost_context_callback_;
   bool lost_context_callback_run_ = false;
 
   int current_trace_stack_;
 
-  GpuControl* gpu_control_;
+  GpuControl* const gpu_control_;
 
   Capabilities capabilities_;
 
   // Flag to indicate whether the implementation can retain resources, or
   // whether it should aggressively free them.
   bool aggressively_free_resources_;
 
   // Result of last GetString(GL_EXTENSIONS), used to keep
   // GetString(GL_EXTENSIONS), GetStringi(GL_EXTENSIONS, index) and
   // GetIntegerv(GL_NUM_EXTENSIONS) in sync. This points to gl_strings, valid
@@ skipping 44 matching lines @@
 
 inline bool GLES2Implementation::GetTexParameterivHelper(
     GLenum /* target */, GLenum /* pname */, GLint* /* params */) {
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_