wxMutexError wxMutexInternal::Lock(unsigned long ms)
{
+#ifdef HAVE_PTHREAD_MUTEX_TIMEDLOCK
static const long MSEC_IN_SEC = 1000;
static const long NSEC_IN_MSEC = 1000000;
+ static const long NSEC_IN_USEC = 1000;
static const long NSEC_IN_SEC = MSEC_IN_SEC * NSEC_IN_MSEC;
time_t seconds = ms/MSEC_IN_SEC;
long nanoseconds = (ms % MSEC_IN_SEC) * NSEC_IN_MSEC;
timespec ts = { 0, 0 };
+ // normally we should use clock_gettime(CLOCK_REALTIME) here but this
+ // function is in librt and we don't link with it currently, so use
+ // gettimeofday() instead -- if it turns out that this is really too
+ // imprecise, we should modify configure to check if clock_gettime() is
+ // available and whether it requires -lrt and use it instead
+#if 0
if ( clock_gettime(CLOCK_REALTIME, &ts) == 0 )
{
- ts.tv_sec += seconds;
- ts.tv_nsec += nanoseconds;
- if ( ts.tv_nsec > NSEC_IN_SEC )
- {
- ts.tv_sec += 1;
- ts.tv_nsec -= NSEC_IN_SEC;
- }
}
+#else
+ struct timeval tv;
+ if ( wxGetTimeOfDay(&tv) != -1 )
+ {
+ ts.tv_sec = tv.tv_sec;
+ ts.tv_nsec = tv.tv_usec*NSEC_IN_USEC;
+ }
+#endif
else // fall back on system timer
{
- wxLogDebug(_T("clock_gettime(CLOCK_REALTIME) failed"));
- ts.tv_sec = time(NULL) + seconds;
- ts.tv_nsec = nanoseconds;
+ ts.tv_sec = time(NULL);
+ }
+
+ ts.tv_sec += seconds;
+ ts.tv_nsec += nanoseconds;
+ if ( ts.tv_nsec > NSEC_IN_SEC )
+ {
+ ts.tv_sec += 1;
+ ts.tv_nsec -= NSEC_IN_SEC;
}
return HandleLockResult(pthread_mutex_timedlock(&m_mutex, &ts));
+#else // !HAVE_PTHREAD_MUTEX_TIMEDLOCK
+ wxUnusedVar(ms);
+
+ return wxMUTEX_MISC_ERROR;
+#endif // HAVE_PTHREAD_MUTEX_TIMEDLOCK/!HAVE_PTHREAD_MUTEX_TIMEDLOCK
}
wxMutexError wxMutexInternal::HandleLockResult(int err)