WIP GPU scheduler + delayed activation / tile draw

gpu/command_buffer/common/sync_token.h

 // Copyright 2015 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_COMMON_SYNC_TOKEN_H_
 #define GPU_COMMAND_BUFFER_COMMON_SYNC_TOKEN_H_
 
 #include <stdint.h>
 #include <string.h>
 
@@ skipping 33 matching lines @@
   }
 
   void Clear() {
     verified_flush_ = false;
     namespace_id_ = CommandBufferNamespace::INVALID;
     extra_data_field_ = 0;
     command_buffer_id_ = CommandBufferId();
     release_count_ = 0;
   }
 
-  void SetVerifyFlush() {
-    verified_flush_ = true;
-  }
+  void SetVerifyFlush() { verified_flush_ = true; }
 
   bool HasData() const {
     return namespace_id_ != CommandBufferNamespace::INVALID;
   }
 
   int8_t* GetData() { return reinterpret_cast<int8_t*>(this); }
 
   const int8_t* GetConstData() const {
     return reinterpret_cast<const int8_t*>(this);
   }
 
+  bool IsEqual(const SyncToken& other) const {
+    return namespace_id_ == other.namespace_id() &&
+           command_buffer_id_ == other.command_buffer_id() &&
+           release_count_ == other.release_count();
+  }
+
   bool verified_flush() const { return verified_flush_; }
   CommandBufferNamespace namespace_id() const { return namespace_id_; }
   CommandBufferId command_buffer_id() const { return command_buffer_id_; }
   uint64_t release_count() const { return release_count_; }
 
   // This extra data field can be used by command buffers to add extra
   // information to identify unverified sync tokens. The current purpose
   // of this field is only for unverified sync tokens which only exist within
   // the same process so this information will not survive cross-process IPCs.
   int32_t extra_data_field() const { return extra_data_field_; }
@@ skipping 25 matching lines @@
   CommandBufferId command_buffer_id_;
   uint64_t release_count_;
 };
 
 static_assert(sizeof(SyncToken) <= GL_SYNC_TOKEN_SIZE_CHROMIUM,
               "SyncToken size must not exceed GL_SYNC_TOKEN_SIZE_CHROMIUM");
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_SYNC_TOKEN_H_