From b61c8aba800959edfa405adb8c8a6f2f371633dd Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 14 Aug 2003 00:14:43 +0000 Subject: Update. 2003-08-13 Ulrich Drepper * sysdeps/unix/sysv/linux/i386/syscalls.list: Add time syscall. * elf/Makefile: Use LC_ALL=C in a few cases where we call external text processing tools. * sysdeps/pthread/aio_misc.h (struct waitlist): Don't add caller_pid element unless BROKEN_THREAD_SIGNALS is defined. (struct requestlist): Likewise. * sysdeps/pthread/aio_misc.c (__aio_enqueue_request): Don't fill in caller_pid of new request unless BROKEN_THREAD_SIGNALS is defined. * sysdeps/pthread/aio_suspend.c (aio_suspend): Likewise. * sysdeps/pthread/aio_notify.c (__aio_notify_only): Remove caller_pid parameter unless BROKEN_THREAD_SIGNALS is defined. Adjust callers. Pass current PID to __aio_sigqueue. * sysdeps/pthread/lio_listio.c (lio_listio): Adjust __aio_notify_only call. Don't initialize caller_pid field of waitlist element. --- sysdeps/pthread/aio_misc.c | 4 +++- sysdeps/pthread/aio_misc.h | 9 +++++++++ sysdeps/pthread/aio_notify.c | 22 ++++++++++++++++++++-- sysdeps/pthread/aio_suspend.c | 2 ++ sysdeps/pthread/lio_listio.c | 12 ++++++++++++ 5 files changed, 46 insertions(+), 3 deletions(-) (limited to 'sysdeps/pthread') diff --git a/sysdeps/pthread/aio_misc.c b/sysdeps/pthread/aio_misc.c index 78cf764837..c2eb674212 100644 --- a/sysdeps/pthread/aio_misc.c +++ b/sysdeps/pthread/aio_misc.c @@ -1,5 +1,5 @@ /* Handle general operations. - Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + Copyright (C) 1997,1998,1999,2000,2001,2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1997. @@ -328,8 +328,10 @@ __aio_enqueue_request (aiocb_union *aiocbp, int operation) return NULL; } newp->aiocbp = aiocbp; +#ifdef BROKEN_THREAD_SIGNALS newp->caller_pid = (aiocbp->aiocb.aio_sigevent.sigev_notify == SIGEV_SIGNAL ? getpid () : 0); +#endif newp->waiting = NULL; aiocbp->aiocb.__abs_prio = prio; diff --git a/sysdeps/pthread/aio_misc.h b/sysdeps/pthread/aio_misc.h index 05e60e7d1e..44d53b078f 100644 --- a/sysdeps/pthread/aio_misc.h +++ b/sysdeps/pthread/aio_misc.h @@ -50,9 +50,11 @@ struct waitlist volatile int *counterp; /* The next field is used in asynchronous `lio_listio' operations. */ struct sigevent *sigevp; +#ifdef BROKEN_THREAD_SIGNALS /* XXX See requestlist, it's used to work around the broken signal handling in Linux. */ pid_t caller_pid; +#endif }; @@ -80,9 +82,11 @@ struct requestlist /* Pointer to the actual data. */ aiocb_union *aiocbp; +#ifdef BROKEN_THREAD_SIGNALS /* PID of the initiator thread. XXX This is only necessary for the broken signal handling on Linux. */ pid_t caller_pid; +#endif /* List of waiting processes. */ struct waitlist *waiting; @@ -120,8 +124,13 @@ extern void __aio_notify (struct requestlist *req) attribute_hidden internal_function; /* Notify initiator of request. */ +#ifdef BROKEN_THREAD_SIGNALS extern int __aio_notify_only (struct sigevent *sigev, pid_t caller_pid) attribute_hidden internal_function; +#else +extern int __aio_notify_only (struct sigevent *sigev) + attribute_hidden internal_function; +#endif /* Send the signal. */ extern int __aio_sigqueue (int sig, const union sigval val, pid_t caller_pid) diff --git a/sysdeps/pthread/aio_notify.c b/sysdeps/pthread/aio_notify.c index 047b6314a0..d1c0a63fbf 100644 --- a/sysdeps/pthread/aio_notify.c +++ b/sysdeps/pthread/aio_notify.c @@ -1,5 +1,5 @@ /* Notify initiator of AIO request. - Copyright (C) 1997,98,99,2000,01 Free Software Foundation, Inc. + Copyright (C) 1997,98,99,2000,2001,2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1997. @@ -45,12 +45,16 @@ notify_func_wrapper (void *arg) int internal_function +#ifdef BROKEN_THREAD_SIGNALS __aio_notify_only (struct sigevent *sigev, pid_t caller_pid) +#else +__aio_notify_only (struct sigevent *sigev) +#endif { int result = 0; /* Send the signal to notify about finished processing of the request. */ - if (sigev->sigev_notify == SIGEV_THREAD) + if (__builtin_expect (sigev->sigev_notify == SIGEV_THREAD, 0)) { /* We have to start a thread. */ pthread_t tid; @@ -91,9 +95,15 @@ __aio_notify_only (struct sigevent *sigev, pid_t caller_pid) #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. */ +# ifdef BROKEN_THREAD_SIGNALS if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid) < 0) result = -1; +# else + if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value, getpid ()) + < 0) + result = -1; +# endif #else /* There are no queued signals on this system at all. */ result = raise (sigev->sigev_signo); @@ -111,7 +121,11 @@ __aio_notify (struct requestlist *req) struct waitlist *waitlist; struct aiocb *aiocbp = &req->aiocbp->aiocb; +#ifdef BROKEN_THREAD_SIGNALS if (__aio_notify_only (&aiocbp->aio_sigevent, req->caller_pid) != 0) +#else + if (__aio_notify_only (&aiocbp->aio_sigevent) != 0) +#endif { /* XXX What shall we do if already an error is set by read/write/fsync? */ @@ -135,7 +149,11 @@ __aio_notify (struct requestlist *req) this request is the last one, send the signal. */ if (*waitlist->counterp == 0) { +#ifdef BROKEN_THREAD_SIGNALS __aio_notify_only (waitlist->sigevp, waitlist->caller_pid); +#else + __aio_notify_only (waitlist->sigevp); +#endif /* This is tricky. See lio_listio.c for the reason why this works. */ free ((void *) waitlist->counterp); diff --git a/sysdeps/pthread/aio_suspend.c b/sysdeps/pthread/aio_suspend.c index 8bc8f0e9a1..207dad964e 100644 --- a/sysdeps/pthread/aio_suspend.c +++ b/sysdeps/pthread/aio_suspend.c @@ -115,7 +115,9 @@ aio_suspend (list, nent, timeout) waitlist[cnt].next = requestlist[cnt]->waiting; waitlist[cnt].counterp = &dummy; waitlist[cnt].sigevp = NULL; +#ifdef BROKEN_THREAD_SIGNALS waitlist[cnt].caller_pid = 0; /* Not needed. */ +#endif requestlist[cnt]->waiting = &waitlist[cnt]; any = true; } diff --git a/sysdeps/pthread/lio_listio.c b/sysdeps/pthread/lio_listio.c index 0ea3d92414..5b98837b0d 100644 --- a/sysdeps/pthread/lio_listio.c +++ b/sysdeps/pthread/lio_listio.c @@ -100,8 +100,14 @@ lio_listio (mode, list, nent, sig) pthread_mutex_unlock (&__aio_requests_mutex); if (mode == LIO_NOWAIT) + { +#ifdef BROKEN_THREAD_SIGNALS __aio_notify_only (sig, sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0); +#else + __aio_notify_only (sig); +#endif + } return result; } @@ -122,7 +128,9 @@ lio_listio (mode, list, nent, sig) waitlist[cnt].next = requests[cnt]->waiting; waitlist[cnt].counterp = &total; waitlist[cnt].sigevp = NULL; +#ifdef BROKEN_THREAD_SIGNALS waitlist[cnt].caller_pid = 0; /* Not needed. */ +#endif requests[cnt]->waiting = &waitlist[cnt]; ++total; } @@ -159,7 +167,9 @@ lio_listio (mode, list, nent, sig) } else { +#ifdef BROKEN_THREAD_SIGNALS pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0; +#endif total = 0; for (cnt = 0; cnt < nent; ++cnt) @@ -173,7 +183,9 @@ lio_listio (mode, list, nent, sig) waitlist->list[cnt].next = requests[cnt]->waiting; waitlist->list[cnt].counterp = &waitlist->counter; waitlist->list[cnt].sigevp = &waitlist->sigev; +#ifdef BROKEN_THREAD_SIGNALS waitlist->list[cnt].caller_pid = caller_pid; +#endif requests[cnt]->waiting = &waitlist->list[cnt]; ++total; } -- cgit v1.2.3