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conditionVarPosixImpl.cxx
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file conditionVarPosixImpl.cxx
10 * @author drose
11 * @date 2006-02-10
12 */
13
14#include "selectThreadImpl.h"
15
16#ifdef HAVE_POSIX_THREADS
17
19#include <sys/time.h>
20
21/**
22 *
23 */
24void ConditionVarPosixImpl::
25wait(double timeout) {
26 // TAU_PROFILE("ConditionVarPosixImpl::wait()", " ", TAU_USER);
27
28 struct timeval now;
29 gettimeofday(&now, nullptr);
30
31 // Convert from timeval to timespec
32 struct timespec ts;
33 ts.tv_sec = now.tv_sec;
34 ts.tv_nsec = now.tv_usec * 1000;
35
36 int seconds = (int)floor(timeout);
37 ts.tv_sec += seconds;
38 ts.tv_nsec += (int)((timeout - seconds) * 1000000.0);
39 if (ts.tv_nsec > 1000000) {
40 ts.tv_nsec -= 1000000;
41 ++ts.tv_sec;
42 }
43
44 int result = pthread_cond_timedwait(&_cvar, &_mutex._lock, &ts);
45#ifndef NDEBUG
46 if (result != 0 && result != ETIMEDOUT) {
47 pipeline_cat.error()
48 << "Unexpected error " << result << " from pthread_cond_timedwait()\n";
49 }
50#endif
51}
52
53#endif // HAVE_POSIX_THREADS
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.