pwr_tStatus
sync_MutexLock (
thread_sMutex *mp
)
{
#if defined OS_ELN
ELN$LOCK_MUTEX(*mp);
return SYNC__SUCCESS;
#elif defined OS_LYNX && defined PWR_LYNX_30
return errno_Pstatus(pthread_mutex_lock(mp));
#elif defined OS_POSIX
return errno_Status(pthread_mutex_lock(mp));
#elif defined OS_VMS
return errno_Status(tis_mutex_lock(mp));
#else
# error Not defined for this platform !
#endif
}
/*
** The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt
** to enter a mutex. If another thread is already within the mutex,
** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return
** SQLITE_BUSY. The sqlite3_mutex_try() interface returns SQLITE_OK
** upon successful entry. Mutexes created using SQLITE_MUTEX_RECURSIVE can
** be entered multiple times by the same thread. In such cases the,
** mutex must be exited an equal number of times before another thread
** can enter. If the same thread tries to enter any other kind of mutex
** more than once, the behavior is undefined.
*/
static void vmsMutexEnter(sqlite3_mutex *p){
tis_mutex_lock(&p->mutex);
}
