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authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-01-31 20:45:31 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-01-31 20:45:31 +0000
commit07d880f4bccd3d5f26fb729ca3fca5f6bed081d3 (patch)
treeaed075a8265065601128cfd8da3b946190292f0d /cpukit/posix/src/sigtimedwait.c
parentNew files added to ease debugging. (diff)
downloadrtems-07d880f4bccd3d5f26fb729ca3fca5f6bed081d3.tar.bz2
Split psignal.c into many more files. This reduced the amount of
object code that has to be loaded just for initializing the signal manager.
Diffstat (limited to 'cpukit/posix/src/sigtimedwait.c')
-rw-r--r--cpukit/posix/src/sigtimedwait.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/cpukit/posix/src/sigtimedwait.c b/cpukit/posix/src/sigtimedwait.c
new file mode 100644
index 0000000000..bb35dd30d7
--- /dev/null
+++ b/cpukit/posix/src/sigtimedwait.c
@@ -0,0 +1,117 @@
+/*
+ * 3.3.8 Synchronously Accept a Signal, P1003.1b-1993, p. 76
+ *
+ * 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>
+#include <rtems/posix/time.h>
+
+int _POSIX_signals_Get_highest(
+ sigset_t set
+)
+{
+ int signo;
+
+ for ( signo = SIGRTMIN ; signo <= SIGRTMAX ; signo++ ) {
+ if ( set & signo_to_mask( signo ) )
+ return signo;
+ }
+
+/* XXX - add __SIGFIRSTNOTRT or something like that to newlib siginfo.h */
+
+ for ( signo = SIGHUP ; signo <= __SIGLASTNOTRT ; signo++ ) {
+ if ( set & signo_to_mask( signo ) )
+ return signo;
+ }
+
+ return 0;
+}
+
+int sigtimedwait(
+ const sigset_t *set,
+ siginfo_t *info,
+ const struct timespec *timeout
+)
+{
+ Thread_Control *the_thread;
+ POSIX_API_Control *api;
+ Watchdog_Interval interval;
+ siginfo_t signal_information;
+ siginfo_t *the_info;
+ int signo;
+
+ the_info = ( info ) ? info : &signal_information;
+
+ the_thread = _Thread_Executing;
+
+ api = the_thread->API_Extensions[ THREAD_API_POSIX ];
+
+ /*
+ * What if they are already pending?
+ */
+
+ /* API signals pending? */
+
+ if ( *set & api->signals_pending ) {
+ /* XXX real info later */
+ the_info->si_signo = _POSIX_signals_Get_highest( api->signals_pending );
+ _POSIX_signals_Clear_signals( api, the_info->si_signo, the_info,
+ FALSE, FALSE );
+ the_info->si_code = SI_USER;
+ the_info->si_value.sival_int = 0;
+ return the_info->si_signo;
+ }
+
+ /* Process pending signals? */
+
+ if ( *set & _POSIX_signals_Pending) {
+ signo = _POSIX_signals_Get_highest( _POSIX_signals_Pending );
+ _POSIX_signals_Clear_signals( api, signo, the_info, TRUE, FALSE );
+
+ if ( !info ) {
+ the_info->si_signo = signo;
+ the_info->si_code = SI_USER;
+ the_info->si_value.sival_int = 0;
+ }
+ }
+
+ interval = 0;
+ if ( timeout ) {
+
+ if (timeout->tv_nsec < 0 || timeout->tv_nsec >= TOD_NANOSECONDS_PER_SECOND)
+ set_errno_and_return_minus_one( EINVAL );
+
+ interval = _POSIX_Timespec_to_interval( timeout );
+ }
+
+ the_info->si_signo = -1;
+
+ _Thread_Disable_dispatch();
+ the_thread->Wait.queue = &_POSIX_signals_Wait_queue;
+ the_thread->Wait.return_code = EINTR;
+ the_thread->Wait.option = *set;
+ the_thread->Wait.return_argument = (void *) the_info;
+ _Thread_queue_Enter_critical_section( &_POSIX_signals_Wait_queue );
+ _Thread_queue_Enqueue( &_POSIX_signals_Wait_queue, interval );
+ _Thread_Enable_dispatch();
+
+ errno = _Thread_Executing->Wait.return_code;
+ return the_info->si_signo;
+}