Add a command to lose the context

gpu/command_buffer/service/context_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_SERVICE_CONTEXT_GROUP_H_
 #define GPU_COMMAND_BUFFER_SERVICE_CONTEXT_GROUP_H_
 
 #include <string>
+#include <vector>
 #include "base/basictypes.h"
 #include "base/hash_tables.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/command_buffer/service/gles2_cmd_validation.h"
 #include "gpu/command_buffer/service/feature_info.h"
 #include "gpu/gpu_export.h"
 
 namespace gpu {
 
 class IdAllocatorInterface;
 class TransferBufferManagerInterface;
 
@@ skipping 19 matching lines @@
   typedef scoped_refptr<ContextGroup> Ref;
 
   ContextGroup(
       MailboxManager* mailbox_manager,
       ImageManager* image_manager,
       MemoryTracker* memory_tracker,
       bool bind_generates_resource);
 
   // This should only be called by GLES2Decoder. This must be paired with a
   // call to destroy if it succeeds.
-  bool Initialize(const DisallowedFeatures& disallowed_features,
-                  const char* allowed_features);
+  bool Initialize(
+      GLES2Decoder* decoder,
+      const DisallowedFeatures& disallowed_features,
+      const char* allowed_features);
 
   // Destroys all the resources when called for the last context in the group.
   // It should only be called by GLES2Decoder.
-  void Destroy(bool have_context);
+  void Destroy(GLES2Decoder* decoder, bool have_context);
 
   MailboxManager* mailbox_manager() const {
     return mailbox_manager_.get();
   }
 
   ImageManager* image_manager() const {
     return image_manager_.get();
   }
 
   MemoryTracker* memory_tracker() const {
@@ skipping 69 matching lines @@
   }
 
   TransferBufferManagerInterface* transfer_buffer_manager() const {
     return transfer_buffer_manager_.get();
   }
 
   IdAllocatorInterface* GetIdAllocator(unsigned namespace_id);
 
   uint32 GetMemRepresented() const;
 
+  // Loses all the context associated with this group.
+  void LoseContexts(GLenum reset_status);
+
  private:
   friend class base::RefCounted<ContextGroup>;
   ~ContextGroup();
 
   bool CheckGLFeature(GLint min_required, GLint* v);
   bool CheckGLFeatureU(GLint min_required, uint32* v);
   bool QueryGLFeature(GLenum pname, GLint min_required, GLint* v);
   bool QueryGLFeatureU(GLenum pname, GLint min_required, uint32* v);
+  bool HaveContexts();
 
   scoped_refptr<MailboxManager> mailbox_manager_;
   scoped_refptr<ImageManager> image_manager_;
   scoped_refptr<MemoryTracker> memory_tracker_;
   scoped_ptr<TransferBufferManagerInterface> transfer_buffer_manager_;
 
-  // Whether or not this context is initialized.
-  int num_contexts_;
   bool enforce_gl_minimums_;
   bool bind_generates_resource_;
 
   uint32 max_vertex_attribs_;
   uint32 max_texture_units_;
   uint32 max_texture_image_units_;
   uint32 max_vertex_texture_image_units_;
   uint32 max_fragment_uniform_vectors_;
   uint32 max_varying_vectors_;
   uint32 max_vertex_uniform_vectors_;
@@ skipping 10 matching lines @@
 
   scoped_ptr<ProgramManager> program_manager_;
 
   scoped_ptr<ShaderManager> shader_manager_;
 
   linked_ptr<IdAllocatorInterface>
       id_namespaces_[id_namespaces::kNumIdNamespaces];
 
   FeatureInfo::Ref feature_info_;
 
+  std::vector<base::WeakPtr<gles2::GLES2Decoder> > decoders_;
+
   DISALLOW_COPY_AND_ASSIGN(ContextGroup);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_GROUP_H_