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76 lines
2.0 KiB
76 lines
2.0 KiB
/*
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Copyright (c) 2012 Martin Sustrik All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom
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the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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*/
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#include "glock.h"
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#if defined NN_HAVE_WINDOWS
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#include "win.h"
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#include "err.h"
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static LONG nn_glock_initialised = 0;
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static CRITICAL_SECTION nn_glock_cs;
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static void nn_glock_init (void)
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{
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if (InterlockedCompareExchange (&nn_glock_initialised, 1, 0) == 0)
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InitializeCriticalSection (&nn_glock_cs);
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}
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void nn_glock_lock (void)
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{
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nn_glock_init ();
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EnterCriticalSection (&nn_glock_cs);
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}
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void nn_glock_unlock (void)
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{
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nn_glock_init ();
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LeaveCriticalSection (&nn_glock_cs);
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}
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#else
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#include "err.h"
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#include <pthread.h>
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static pthread_mutex_t nn_glock_mutex = PTHREAD_MUTEX_INITIALIZER;
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void nn_glock_lock (void)
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{
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int rc;
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rc = pthread_mutex_lock (&nn_glock_mutex);
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errnum_assert (rc == 0, rc);
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}
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void nn_glock_unlock (void)
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{
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int rc;
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rc = pthread_mutex_unlock (&nn_glock_mutex);
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errnum_assert (rc == 0, rc);
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}
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#endif
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