+++ /dev/null
-///////////////////////////////////////////////////////////////////////////
-//
-// Copyright (c) 2005, Industrial Light & Magic, a division of Lucas
-// Digital Ltd. LLC
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-// * Neither the name of Industrial Light & Magic nor the names of
-// its contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-///////////////////////////////////////////////////////////////////////////
-
-#ifndef INCLUDED_ILM_THREAD_MUTEX_H
-#define INCLUDED_ILM_THREAD_MUTEX_H
-
-//-----------------------------------------------------------------------------
-//
-// class Mutex, class Lock
-//
-// Class Mutex is a wrapper for a system-dependent mutual exclusion
-// mechanism. Actual locking and unlocking of a Mutex object must
-// be performed using an instance of a Lock (defined below).
-//
-// Class lock provides safe locking and unlocking of mutexes even in
-// the presence of C++ exceptions. Constructing a Lock object locks
-// the mutex; destroying the Lock unlocks the mutex.
-//
-// Lock objects are not themselves thread-safe. You should never
-// share a Lock object among multiple threads.
-//
-// Typical usage:
-//
-// Mutex mtx; // Create a Mutex object that is visible
-// //to multiple threads
-//
-// ... // create some threads
-//
-// // Then, within each thread, construct a critical section like so:
-//
-// {
-// Lock lock (mtx); // Lock constructor locks the mutex
-// ... // do some computation on shared data
-// } // leaving the block unlocks the mutex
-//
-//-----------------------------------------------------------------------------
-
-#include "OpenEXRConfig.h"
-
-#if defined _WIN32 || defined _WIN64
- #ifdef NOMINMAX
- #undef NOMINMAX
- #endif
- #define NOMINMAX
- #include <windows.h>
-#elif HAVE_PTHREAD
- #include <pthread.h>
-#endif
-
-namespace IlmThread {
-
-class Lock;
-
-
-class Mutex
-{
- public:
-
- Mutex ();
- virtual ~Mutex ();
-
- private:
-
- void lock () const;
- void unlock () const;
-
- #if defined _WIN32 || defined _WIN64
- mutable CRITICAL_SECTION _mutex;
- #elif HAVE_PTHREAD
- mutable pthread_mutex_t _mutex;
- #endif
-
- void operator = (const Mutex& M); // not implemented
- Mutex (const Mutex& M); // not implemented
-
- friend class Lock;
-};
-
-
-class Lock
-{
- public:
-
- Lock (const Mutex& m, bool autoLock = true):
- _mutex (m),
- _locked (false)
- {
- if (autoLock)
- {
- _mutex.lock();
- _locked = true;
- }
- }
-
- ~Lock ()
- {
- if (_locked)
- _mutex.unlock();
- }
-
- void acquire ()
- {
- _mutex.lock();
- _locked = true;
- }
-
- void release ()
- {
- _mutex.unlock();
- _locked = false;
- }
-
- bool locked ()
- {
- return _locked;
- }
-
- private:
-
- const Mutex & _mutex;
- bool _locked;
-};
-
-
-} // namespace IlmThread
-
-#endif