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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [src/] [semgetvalue.c] - Rev 619
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/* * $Id: semgetvalue.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 * * 11.2.8 Get the Value of a Semaphore, P1003.1b-1993, p.229 */ int sem_getvalue( sem_t *sem, int *sval ) { 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(); return POSIX_MP_NOT_IMPLEMENTED(); set_errno_and_return_minus_one( EINVAL ); case OBJECTS_LOCAL: *sval = _CORE_semaphore_Get_count( &the_semaphore->Semaphore ); _Thread_Enable_dispatch(); return 0; } return POSIX_BOTTOM_REACHED(); }
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