gpu in-memory program cache implementation with a memory limit + lru eviction.

gpu/command_buffer/service/shader_translator.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_SHADER_TRANSLATOR_H_
 #define GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 25 matching lines @@
     VariableInfo()
         : type(0),
           size(0) {
     }
 
     VariableInfo(int _type, int _size, std::string _name)
         : type(_type),
           size(_size),
           name(_name) {
     }
+    bool operator==(
+        const ShaderTranslatorInterface::VariableInfo& other) const {
+      return type == other.type &&
+          size == other.size &&
+          strcmp(name.c_str(), other.name.c_str()) == 0;
+    }
 
     int type;
     int size;
     std::string name;  // name in the original shader source.
   };
 
   // Mapping between variable name and info.
   typedef base::hash_map<std::string, VariableInfo> VariableMap;
 
   // Initializes the translator.
@@ skipping 79 matching lines @@
   ObserverList<DestructionObserver> destruction_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ShaderTranslator);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_H_