Add commands Jump, Call and Return...

gpu/command_buffer/service/cmd_parser.h

 // Copyright (c) 2009 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.
 
 // This file contains the command parser class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_CMD_PARSER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_CMD_PARSER_H_
 
 #include "gpu/command_buffer/common/constants.h"
@@ skipping 11 matching lines @@
                 size_t shm_size,
                 ptrdiff_t offset,
                 size_t size,
                 CommandBufferOffset start_get,
                 AsyncAPIInterface *handler);
 
   // Gets the "get" pointer. The get pointer is an index into the command
   // buffer considered as an array of CommandBufferEntry.
   CommandBufferOffset get() const { return get_; }
 
+  // Sets the "get" pointer. The get pointer is an index into the command buffer
+  // considered as an array of CommandBufferEntry.
+  bool set_get(CommandBufferOffset get) {
+    if (get < entry_count_) {
+      get_ = get;
+      return true;
+    }
+    return false;
+  }
+
   // Sets the "put" pointer. The put pointer is an index into the command
   // buffer considered as an array of CommandBufferEntry.
   void set_put(CommandBufferOffset put) { put_ = put; }
 
   // Gets the "put" pointer. The put pointer is an index into the command
   // buffer considered as an array of CommandBufferEntry.
   CommandBufferOffset put() const { return put_; }
 
   // Checks whether there are commands to process.
   bool IsEmpty() const { return put_ == get_; }
 
   // Processes one command, updating the get pointer. This will return an error
   // if there are no commands in the buffer.
   parse_error::ParseError ProcessCommand();
 
   // Processes all commands until get == put.
   parse_error::ParseError ProcessAllCommands();
 
   // Reports an error.
   void ReportError(unsigned int command_id, parse_error::ParseError result);
 
  private:
   CommandBufferOffset get_;
   CommandBufferOffset put_;
   CommandBufferEntry *buffer_;
-  size_t entry_count_;
+  int32 entry_count_;
   AsyncAPIInterface *handler_;
 };
 
 // This class defines the interface for an asynchronous API handler, that
 // is responsible for de-multiplexing commands and their arguments.
 class AsyncAPIInterface {
  public:
   AsyncAPIInterface() {}
   virtual ~AsyncAPIInterface() {}
 
@@ skipping 10 matching lines @@
       unsigned int arg_count,
       const void* cmd_data) = 0;
 
   // Returns a name for a command. Useful for logging / debuging.
   virtual const char* GetCommandName(unsigned int command_id) const = 0;
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CMD_PARSER_H_