ppapi/proxy/locking_resource_releaser.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PPAPI_PROXY_LOCKING_RESOURCE_RELEASER_H_
   6 #define PPAPI_PROXY_LOCKING_RESOURCE_RELEASER_H_
   7
   8 #include "ppapi/shared_impl/ppapi_globals.h"
   9 #include "ppapi/shared_impl/proxy_lock.h"
  10 #include "ppapi/shared_impl/resource_tracker.h"
  11
  12 namespace ppapi {
  13 namespace proxy {
  14
  15 // LockingResourceReleaser is a simple RAII class for releasing a resource at
  16 // the end of scope. This acquires the ProxyLock before releasing the resource.
  17 // It is for use in unit tests. Most proxy or implementation code should use
  18 // ScopedPPResource instead. Unit tests sometimes can't use ScopedPPResource
  19 // because it asserts that the ProxyLock is already held.
  20 class LockingResourceReleaser {
  21  public:
  22   explicit LockingResourceReleaser(PP_Resource resource)
  23       : resource_(resource) {
  24   }
  25   ~LockingResourceReleaser() {
  26     ProxyAutoLock lock;
  27     PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(resource_);
  28   }
  29
  30   PP_Resource get() { return resource_; }
  31
  32  private:
  33   PP_Resource resource_;
  34
  35   DISALLOW_COPY_AND_ASSIGN(LockingResourceReleaser);
  36 };
  37
  38 }  // namespace proxy
  39 }  // namespace ppapi
  40
  41 #endif  // PPAPI_PROXY_LOCKING_RESOURCE_RELEASER_H_