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/src/FreeImage/Source/OpenEXR/IlmThread/IlmThreadMutexPosix.cpp

https://bitbucket.org/cabalistic/ogredeps/
C++ | 85 lines | 30 code | 16 blank | 39 comment | 4 complexity | 7ac782393bac4ac62c71d735a0e979e8 MD5 | raw file
 1///////////////////////////////////////////////////////////////////////////
 2//
 3// Copyright (c) 2005, Industrial Light & Magic, a division of Lucas
 4// Digital Ltd. LLC
 5// 
 6// All rights reserved.
 7// 
 8// Redistribution and use in source and binary forms, with or without
 9// modification, are permitted provided that the following conditions are
10// met:
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
15// in the documentation and/or other materials provided with the
16// distribution.
17// *       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. 
20// 
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
25// 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
30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33///////////////////////////////////////////////////////////////////////////
34
35//-----------------------------------------------------------------------------
36//
37//	class Mutex -- implementation for
38//	platforms that support Posix threads
39//
40//-----------------------------------------------------------------------------
41
42#include "IlmBaseConfig.h"
43
44#if HAVE_PTHREAD
45
46#include "IlmThreadMutex.h"
47#include "Iex.h"
48#include <assert.h>
49
50namespace IlmThread {
51
52
53Mutex::Mutex ()
54{
55    if (int error = ::pthread_mutex_init (&_mutex, 0))
56        Iex::throwErrnoExc ("Cannot initialize mutex (%T).", error);
57}
58
59
60Mutex::~Mutex ()
61{
62    int error = ::pthread_mutex_destroy (&_mutex);
63    assert (error == 0);
64}
65
66
67void
68Mutex::lock () const
69{
70    if (int error = ::pthread_mutex_lock (&_mutex))
71        Iex::throwErrnoExc ("Cannot lock mutex (%T).", error);
72}
73
74
75void
76Mutex::unlock () const
77{
78    if (int error = ::pthread_mutex_unlock (&_mutex))
79        Iex::throwErrnoExc ("Cannot unlock mutex (%T).", error);
80}
81
82
83} // namespace IlmThread
84
85#endif