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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [src/] [semaphorewaitsupp.c] - Rev 619
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/* * $Id: semaphorewaitsupp.c,v 1.2 2001-09-27 11:59:17 chris Exp $ */ #include <stdarg.h> #include <errno.h> #include <fcntl.h> #include <pthread.h> #include <semaphore.h> #include <limits.h> #include <rtems/system.h> #include <rtems/score/object.h> #include <rtems/posix/semaphore.h> #include <rtems/posix/time.h> #include <rtems/posix/seterr.h> /*PAGE * * _POSIX_Semaphore_Wait_support */ int _POSIX_Semaphore_Wait_support( sem_t *sem, boolean blocking, Watchdog_Interval timeout ) { register POSIX_Semaphore_Control *the_semaphore; Objects_Locations location; the_semaphore = _POSIX_Semaphore_Get( sem, &location ); switch ( location ) { case OBJECTS_ERROR: set_errno_and_return_minus_one( EINVAL ); case OBJECTS_REMOTE: _Thread_Dispatch(); set_errno_and_return_minus_one( EINVAL ); case OBJECTS_LOCAL: _CORE_semaphore_Seize( &the_semaphore->Semaphore, the_semaphore->Object.id, blocking, timeout ); _Thread_Enable_dispatch(); switch ( _Thread_Executing->Wait.return_code ) { case CORE_SEMAPHORE_STATUS_SUCCESSFUL: break; case CORE_SEMAPHORE_STATUS_UNSATISFIED_NOWAIT: set_errno_and_return_minus_one( EAGAIN ); case CORE_SEMAPHORE_WAS_DELETED: set_errno_and_return_minus_one( EAGAIN ); case CORE_SEMAPHORE_TIMEOUT: set_errno_and_return_minus_one( ETIMEDOUT ); break; case CORE_SEMAPHORE_MAXIMUM_COUNT_EXCEEDED: /* * This error can not occur since we set the maximum * count to the largest value the count can hold. */ break; } } return 0; }
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