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///////////////////////////////////////////////////////////////////////////
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// Copyright (c) 2005, Industrial Light & Magic, a division of Lucas
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// All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// * Neither the name of Industrial Light & Magic nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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///////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDED_ILM_THREAD_SEMAPHORE_H
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#define INCLUDED_ILM_THREAD_SEMAPHORE_H
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//-----------------------------------------------------------------------------
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// class Semaphore -- a wrapper class for
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// system-dependent counting semaphores
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//-----------------------------------------------------------------------------
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#include "IlmBaseConfig.h"
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#if defined _WIN32 || defined _WIN64
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#elif HAVE_PTHREAD && !HAVE_POSIX_SEMAPHORES
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#elif HAVE_PTHREAD && HAVE_POSIX_SEMAPHORES
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#include <semaphore.h>
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Semaphore (unsigned int value = 0);
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#if defined _WIN32 || defined _WIN64
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mutable HANDLE _semaphore;
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#elif HAVE_PTHREAD && !HAVE_POSIX_SEMAPHORES
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// If the platform has Posix threads but no semapohores,
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// then we implement them ourselves using condition variables
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unsigned long numWaiting;
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pthread_mutex_t mutex;
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pthread_cond_t nonZero;
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mutable sema_t _semaphore;
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#elif HAVE_PTHREAD && HAVE_POSIX_SEMAPHORES
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mutable sem_t _semaphore;
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void operator = (const Semaphore& s); // not implemented
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Semaphore (const Semaphore& s); // not implemented
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} // namespace IlmThread
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///////////////////////////////////////////////////////////////////////////
3
// Copyright (c) 2005, Industrial Light & Magic, a division of Lucas
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// All rights reserved.
8
// Redistribution and use in source and binary forms, with or without
9
// modification, are permitted provided that the following conditions are
11
// * Redistributions of source code must retain the above copyright
12
// notice, this list of conditions and the following disclaimer.
13
// * Redistributions in binary form must reproduce the above
14
// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// * Neither the name of Industrial Light & Magic nor the names of
18
// its contributors may be used to endorse or promote products derived
19
// from this software without specific prior written permission.
21
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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///////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDED_ILM_THREAD_SEMAPHORE_H
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#define INCLUDED_ILM_THREAD_SEMAPHORE_H
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//-----------------------------------------------------------------------------
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// class Semaphore -- a wrapper class for
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// system-dependent counting semaphores
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//-----------------------------------------------------------------------------
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#include "IlmBaseConfig.h"
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#if defined _WIN32 || defined _WIN64
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#elif HAVE_PTHREAD && !HAVE_POSIX_SEMAPHORES
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#elif HAVE_PTHREAD && HAVE_POSIX_SEMAPHORES
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#include <semaphore.h>
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Semaphore (unsigned int value = 0);
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#if defined _WIN32 || defined _WIN64
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mutable HANDLE _semaphore;
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#elif HAVE_PTHREAD && !HAVE_POSIX_SEMAPHORES
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// If the platform has Posix threads but no semapohores,
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// then we implement them ourselves using condition variables
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unsigned long numWaiting;
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pthread_mutex_t mutex;
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pthread_cond_t nonZero;
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mutable sema_t _semaphore;
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#elif HAVE_PTHREAD && HAVE_POSIX_SEMAPHORES
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mutable sem_t _semaphore;
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void operator = (const Semaphore& s); // not implemented
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Semaphore (const Semaphore& s); // not implemented
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} // namespace IlmThread