Free the resources used by a context group.

gpu/command_buffer/service/buffer_manager.cc

 // Copyright (c) 2010 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.
 
 #include "gpu/command_buffer/service/buffer_manager.h"
 #include "base/logging.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 namespace gpu {
 namespace gles2 {
 
+BufferManager::~BufferManager() {
+  DCHECK(buffer_infos_.empty());
+}
+
+void BufferManager::Destroy(bool have_context) {
+  while (!buffer_infos_.empty()) {
+    if (have_context) {
+      BufferInfo* info = buffer_infos_.begin()->second;
+      if (!info->IsDeleted()) {
+        GLuint service_id = info->service_id();
+        glDeleteBuffersARB(1, &service_id);
+        info->MarkAsDeleted();
+      }
+    }
+    buffer_infos_.erase(buffer_infos_.begin());
+  }
+}
+
 void BufferManager::CreateBufferInfo(GLuint client_id, GLuint service_id) {
   std::pair<BufferInfoMap::iterator, bool> result =
       buffer_infos_.insert(
           std::make_pair(client_id,
                          BufferInfo::Ref(new BufferInfo(service_id))));
   DCHECK(result.second);
 }
 
 BufferManager::BufferInfo* BufferManager::GetBufferInfo(
     GLuint client_id) {
@@ skipping 140 matching lines @@
   if (info->target() == 0) {
     info->set_target(target);
   }
   return true;
 }
 
 }  // namespace gles2
 }  // namespace gpu