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authorRoland McGrath <roland@gnu.org>2001-06-14 05:32:26 +0000
committerRoland McGrath <roland@gnu.org>2001-06-14 05:32:26 +0000
commit221dc560bb546465befd0a0471f52aa88b69cca6 (patch)
tree5ba21b924ba621b68db7074b08a0c3eb68386462 /rt/aio_notify.c
parentc0c71388a72ac59d6d3377e5902431bc888b73f6 (diff)
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* sysdeps/mach/hurd/fork.c (LOSE): Put `goto lose' in dead code
so the label is not considered unused. * sysdeps/mach/hurd/pwrite64.c: New file. * sysdeps/mach/hurd/pread64.c: New file. * sysdeps/mach/hurd/pread.c (__libc_pread): Define this name, with __pread as an alias. * sysdeps/mach/hurd/pwrite.c (__libc_pwrite): Define this name, with __pwrite as an alias. Implement POSIX "shared memory objects" as regular files residing in the /var/run/shm/ directory. This works on any system that supports _POSIX_MAPPED_FILES, to make it also support _POSIX_SHARED_MEMORY_OBJECTS. * sysdeps/posix/shm_open.c: New file. * sysdeps/posix/shm_unlink.c: New file. * sysdeps/mach/hurd/bits/posix_opt.h (_POSIX_SHARED_MEMORY_OBJECTS): Define it. * rt/aio_notify.c (__aio_notify_only) [! _POSIX_REALTIME_SIGNALS]: Use raise instead of __aio_sigqueue.
Diffstat (limited to 'rt/aio_notify.c')
-rw-r--r--rt/aio_notify.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/rt/aio_notify.c b/rt/aio_notify.c
index 558b2d2..04a9dd6 100644
--- a/rt/aio_notify.c
+++ b/rt/aio_notify.c
@@ -1,5 +1,5 @@
/* Notify initiator of AIO request.
- Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1997,98,99,2000,01 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -58,10 +58,19 @@ __aio_notify_only (struct sigevent *sigev, pid_t caller_pid)
result = -1;
}
else if (sigev->sigev_notify == SIGEV_SIGNAL)
- /* We have to send a signal. */
- if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid)
- < 0)
- result = -1;
+ {
+ /* We have to send a signal. */
+#if _POSIX_REALTIME_SIGNALS
+ /* Note that the standard gives us the option of using a plain
+ non-queuing signal here when SA_SIGINFO is not set for the signal. */
+ if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid)
+ < 0)
+ result = -1;
+#else
+ /* There are no queued signals on this system at all. */
+ result = raise (sigev->sigev_signo);
+#endif
+ }
return result;
}