text: /*
   * Copyright 2015 Google Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  // Author: jmarantz@google.com (Joshua Marantz)
  
  #ifndef PAGESPEED_KERNEL_UTIL_THREADSAFE_LOCK_MANAGER_H_
  #define PAGESPEED_KERNEL_UTIL_THREADSAFE_LOCK_MANAGER_H_
  
  #include <set>
  
  #include "pagespeed/kernel/base/named_lock_manager.h"
  #include "pagespeed/kernel/base/ref_counted_ptr.h"
  #include "pagespeed/kernel/thread/scheduler.h"
  
  namespace net_instaweb {
  
  // Threadsafe wrapper for a non-threadsafe lock manager: MemLockManager.
  class ThreadSafeLockManager : public NamedLockManager {
   public:
    explicit ThreadSafeLockManager(Scheduler* scheduler);
    virtual ~ThreadSafeLockManager();
    virtual NamedLock* CreateNamedLock(const StringPiece& name);
  
   private:
    class Lock;
    class LockHolder;
    typedef RefCountedPtr<LockHolder> LockHolderPtr;
  
    LockHolderPtr lock_holder_;
  };
  
  }  //  namespace net_instaweb
  
  #endif  // PAGESPEED_KERNEL_UTIL_THREADSAFE_LOCK_MANAGER_H_
  