Make ShareGroup thread safe

gpu/command_buffer/client/share_group.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_SHARE_GROUP_H_
 #define GPU_COMMAND_BUFFER_CLIENT_SHARE_GROUP_H_
 
+#include <GLES2/gl2.h>
 #include "../client/ref_counted.h"
+#include "../common/gles2_cmd_format.h"
+#include "../common/scoped_ptr.h"
 #include "gles2_impl_export.h"
 
 namespace gpu {
 namespace gles2 {
 
+class GLES2Implementation;
+class ProgramInfoManager;
+
+// Base class for IdHandlers
+class IdHandlerInterface {
+ public:
+  IdHandlerInterface() { }
+  virtual ~IdHandlerInterface() { }
+
+  // Free everything.
+  virtual void Destroy(GLES2Implementation* gl_impl) = 0;
+
+  // Makes some ids at or above id_offset.
+  virtual void MakeIds(
+      GLES2Implementation* gl_impl,
+      GLuint id_offset, GLsizei n, GLuint* ids) = 0;
+
+  // Frees some ids.
+  virtual bool FreeIds(
+      GLES2Implementation* gl_impl, GLsizei n, const GLuint* ids) = 0;
+
+  // Marks an id as used for glBind functions. id = 0 does nothing.
+  virtual bool MarkAsUsedForBind(GLuint id) = 0;
+};
+
 // ShareGroup manages shared resources for contexts that are sharing resources.
 class GLES2_IMPL_EXPORT ShareGroup
     : public gpu::RefCountedThreadSafe<ShareGroup> {
  public:
   typedef scoped_refptr<ShareGroup> Ref;
 
-  ShareGroup();
+  ShareGroup(bool share_resources, bool bind_generates_resource);
   ~ShareGroup();
 
+  void SetGLES2ImplementationForDestruction(GLES2Implementation* gl_impl);
+
+  bool sharing_resources() const {
+    return sharing_resources_;
+  }
+
+  bool bind_generates_resource() const {
+    return bind_generates_resource_;
+  }
+
   bool Initialize();
 
+  IdHandlerInterface* GetIdHandler(int namespace_id) const {
+    return id_handlers_[namespace_id].get();
+  }
+
+  ProgramInfoManager* program_info_manager() {
+    return program_info_manager_.get();
+  }
+
  private:
+  scoped_ptr<IdHandlerInterface> id_handlers_[id_namespaces::kNumIdNamespaces];
+  scoped_ptr<ProgramInfoManager> program_info_manager_;
+
+  // Whether or not this context is sharing resources.
+  bool sharing_resources_;
+  bool bind_generates_resource_;
+
+  GLES2Implementation* gles2_;
+
   DISALLOW_COPY_AND_ASSIGN(ShareGroup);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_SHARE_GROUP_H_