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Diffstat (limited to 'cpukit/posix/src/condsignalsupp.c')
-rw-r--r-- | cpukit/posix/src/condsignalsupp.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/cpukit/posix/src/condsignalsupp.c b/cpukit/posix/src/condsignalsupp.c new file mode 100644 index 0000000000..47e23b5b8e --- /dev/null +++ b/cpukit/posix/src/condsignalsupp.c @@ -0,0 +1,66 @@ +/* + * COPYRIGHT (c) 1989-2007. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <pthread.h> +#include <errno.h> + +#include <rtems/system.h> +#include <rtems/score/object.h> +#include <rtems/score/states.h> +#include <rtems/score/watchdog.h> +#include <rtems/posix/cond.h> +#include <rtems/posix/time.h> +#include <rtems/posix/mutex.h> + +/*PAGE + * + * _POSIX_Condition_variables_Signal_support + * + * A support routine which implements guts of the broadcast and single task + * wake up version of the "signal" operation. + */ + +int _POSIX_Condition_variables_Signal_support( + pthread_cond_t *cond, + bool is_broadcast +) +{ + register POSIX_Condition_variables_Control *the_cond; + Objects_Locations location; + Thread_Control *the_thread; + + the_cond = _POSIX_Condition_variables_Get( cond, &location ); + switch ( location ) { + + case OBJECTS_LOCAL: + do { + the_thread = _Thread_queue_Dequeue( &the_cond->Wait_queue ); + if ( !the_thread ) + the_cond->Mutex = POSIX_CONDITION_VARIABLES_NO_MUTEX; + } while ( is_broadcast && the_thread ); + + _Thread_Enable_dispatch(); + + return 0; + +#if defined(RTEMS_MULTIPROCESSING) + case OBJECTS_REMOTE: +#endif + case OBJECTS_ERROR: + break; + } + + return EINVAL; +} |