Make command buffer commands and immediate data volatile

gpu/command_buffer/service/common_decoder.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_SERVICE_COMMON_DECODER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_COMMON_DECODER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 60 matching lines @@
     template <typename T>
     T GetDataAs(size_t offset, size_t size) const {
       return reinterpret_cast<T>(GetData(offset, size));
     }
 
     // Sets the size of the bucket.
     void SetSize(size_t size);
 
     // Sets a part of the bucket.
     // Returns false if offset or size is out of range.
-    bool SetData(const void* src, size_t offset, size_t size);
+    bool SetData(const volatile void* src, size_t offset, size_t size);
 
     // Sets the bucket data from a string. Strings are passed NULL terminated to
     // distinguish between empty string and no string.
     void SetFromString(const char* str);
 
     // Gets the bucket data as a string. Strings are passed NULL terminated to
     // distrinquish between empty string and no string. Returns False if there
     // is no string.
     bool GetAsString(std::string* str);
 
@@ skipping 76 matching lines @@
 
  protected:
   // Executes a common command.
   // Parameters:
   //    command: the command index.
   //    arg_count: the number of CommandBufferEntry arguments.
   //    cmd_data: the command data.
   // Returns:
   //   error::kNoError if no error was found, one of
   //   error::Error otherwise.
-  error::Error DoCommonCommand(
-      unsigned int command,
-      unsigned int arg_count,
-      const void* cmd_data);
+  error::Error DoCommonCommand(unsigned int command,
+                               unsigned int arg_count,
+                               const volatile void* cmd_data);
 
   // Gets an name for a common command.
   const char* GetCommonCommandName(cmd::CommandId command_id) const;
 
  private:
   // Generate a member function prototype for each command in an automated and
   // typesafe way.
-#define COMMON_COMMAND_BUFFER_CMD_OP(name) \
-  error::Error Handle##name(uint32_t immediate_data_size, const void* data);
+#define COMMON_COMMAND_BUFFER_CMD_OP(name)                \
+  error::Error Handle##name(uint32_t immediate_data_size, \
+                            const volatile void* data);
 
   COMMON_COMMAND_BUFFER_CMDS(COMMON_COMMAND_BUFFER_CMD_OP)
 
   #undef COMMON_COMMAND_BUFFER_CMD_OP
 
   CommandBufferEngine* engine_;
   size_t max_bucket_size_;
 
   typedef std::map<uint32_t, std::unique_ptr<Bucket>> BucketMap;
   BucketMap buckets_;
 
   typedef Error (CommonDecoder::*CmdHandler)(uint32_t immediate_data_size,
-                                             const void* data);
+                                             const volatile void* data);
 
   // A struct to hold info about each command.
   struct CommandInfo {
     CmdHandler cmd_handler;
     uint8_t arg_flags;   // How to handle the arguments for this command
     uint8_t cmd_flags;   // How to handle this command
     uint16_t arg_count;  // How many arguments are expected for this command.
   };
 
   // A table of CommandInfo for all the commands.
   static const CommandInfo command_info[];
 
   DISALLOW_COPY_AND_ASSIGN(CommonDecoder);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_COMMON_DECODER_H_