diff options
Diffstat (limited to 'c/src/exec/posix/src/pthreadsigmask.c')
-rw-r--r-- | c/src/exec/posix/src/pthreadsigmask.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/c/src/exec/posix/src/pthreadsigmask.c b/c/src/exec/posix/src/pthreadsigmask.c new file mode 100644 index 0000000000..1efede39c4 --- /dev/null +++ b/c/src/exec/posix/src/pthreadsigmask.c @@ -0,0 +1,71 @@ +/* + * 3.3.5 Examine and Change Blocked Signals, P1003.1b-1993, p. 73 + * + * NOTE: P1003.1c/D10, p. 37 adds pthread_sigmask(). + * + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + + +#include <pthread.h> +#include <signal.h> +#include <errno.h> + +#include <rtems/system.h> +#include <rtems/posix/pthread.h> +#include <rtems/posix/psignal.h> +#include <rtems/posix/seterr.h> + +int pthread_sigmask( + int how, + const sigset_t *set, + sigset_t *oset +) +{ + POSIX_API_Control *api; + + if ( !set && !oset ) + set_errno_and_return_minus_one( EINVAL ); + + api = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ]; + + if ( oset ) + *oset = api->signals_blocked; + + if ( !set ) + return 0; + + switch ( how ) { + case SIG_BLOCK: + api->signals_blocked |= *set; + break; + case SIG_UNBLOCK: + api->signals_blocked &= ~*set; + break; + case SIG_SETMASK: + api->signals_blocked = *set; + break; + default: + set_errno_and_return_minus_one( EINVAL ); + } + + /* XXX are there critical section problems here? */ + + /* XXX evaluate the new set */ + + if ( ~api->signals_blocked & + (api->signals_pending | _POSIX_signals_Pending) ) { + _Thread_Executing->do_post_task_switch_extension = TRUE; + _Thread_Dispatch(); + } + + return 0; +} |