Update.
1999-08-15 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/aio_sigqueue.c: Take extra parameter and initialize si_pid from it. * sysdeps/generic/aio_sigqueue.c (__aio_sigqueue): Take extra parameter. * rt/aio_misc.c (__aio_enqueue_request): Initialize caller_pid. * rt/aio_misc.h (struct waitlist): Add caller_pid element. (struct requestlist): Likewise. Adjust prototypes of __aio_notify_only and __aio_sigqueue. * rt/notify.c (__aio_notify_only): Take extra parameter. Pass it to __aio_sigqueue. (__aio_notify): Pass caller PID to __aio_notify_only. * rt/aio_suspend.c: Initialize caller_pid. * rt/lio_listio.c: Likewise. * rt/lio_listio64.c: Likewise. * rt/lio_listio.c: If nothing has to be done free mutex before signalling. * rt/lio_listio64.c: Likewise.
This commit is contained in:
Ulrich Drepper
parent
0cc70fcf82
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3a9eb648bb
21
ChangeLog
21
ChangeLog
@ -1,3 +1,24 @@
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1999-08-15 Ulrich Drepper <drepper@cygnus.com>
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* sysdeps/unix/sysv/linux/aio_sigqueue.c: Take extra parameter and
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initialize si_pid from it.
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* sysdeps/generic/aio_sigqueue.c (__aio_sigqueue): Take extra
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parameter.
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* rt/aio_misc.c (__aio_enqueue_request): Initialize caller_pid.
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* rt/aio_misc.h (struct waitlist): Add caller_pid element.
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(struct requestlist): Likewise.
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Adjust prototypes of __aio_notify_only and __aio_sigqueue.
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* rt/notify.c (__aio_notify_only): Take extra parameter. Pass it
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to __aio_sigqueue.
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(__aio_notify): Pass caller PID to __aio_notify_only.
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* rt/aio_suspend.c: Initialize caller_pid.
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* rt/lio_listio.c: Likewise.
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* rt/lio_listio64.c: Likewise.
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* rt/lio_listio.c: If nothing has to be done free mutex before
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signalling.
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* rt/lio_listio64.c: Likewise.
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1999-08-10 H.J. Lu <hjl@gnu.org>
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* resolv/nss_dns/dns-host.c (getanswer_r): Cleanup out-of-
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@ -265,6 +265,8 @@ __aio_enqueue_request (aiocb_union *aiocbp, int operation)
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return NULL;
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}
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newp->aiocbp = aiocbp;
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newp->caller_pid = (aiocbp->aiocb.aio_sigevent.sigev_notify == SIGEV_SIGNAL
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? getpid () : 0);
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newp->waiting = NULL;
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aiocbp->aiocb.__abs_prio = prio;
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@ -1,4 +1,4 @@
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/* Copyright (C) 1997 Free Software Foundation, Inc.
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/* Copyright (C) 1997, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -50,6 +50,9 @@ struct waitlist
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volatile int *counterp;
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/* The next field is used in asynchronous `lio_listio' operations. */
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struct sigevent *sigevp;
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/* XXX See requestlist, it's used to work around the broken signal
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handling in Linux. */
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pid_t caller_pid;
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};
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@ -76,6 +79,10 @@ struct requestlist
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/* Pointer to the actual data. */
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aiocb_union *aiocbp;
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/* PID of the initiator thread.
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XXX This is only necessary for the broken signal handling on Linux. */
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pid_t caller_pid;
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/* List of waiting processes. */
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struct waitlist *waiting;
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};
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@ -104,9 +111,11 @@ extern void __aio_free_request (struct requestlist *req) internal_function;
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extern void __aio_notify (struct requestlist *req) internal_function;
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/* Notify initiator of request. */
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extern int __aio_notify_only (struct sigevent *sigev) internal_function;
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extern int __aio_notify_only (struct sigevent *sigev, pid_t caller_pid)
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internal_function;
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/* Send the signal. */
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extern int __aio_sigqueue (int sig, const union sigval val) internal_function;
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extern int __aio_sigqueue (int sig, const union sigval val, pid_t caller_pid)
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internal_function;
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#endif /* aio_misc.h */
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@ -1,5 +1,5 @@
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/* Notify initiator of AIO request.
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Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -25,7 +25,7 @@
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int
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internal_function
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__aio_notify_only (struct sigevent *sigev)
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__aio_notify_only (struct sigevent *sigev, pid_t caller_pid)
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{
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int result = 0;
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@ -51,7 +51,8 @@ __aio_notify_only (struct sigevent *sigev)
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}
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else if (sigev->sigev_notify == SIGEV_SIGNAL)
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/* We have to send a signal. */
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if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value) < 0)
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if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid)
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< 0)
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result = -1;
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return result;
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@ -65,7 +66,7 @@ __aio_notify (struct requestlist *req)
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struct waitlist *waitlist;
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struct aiocb *aiocbp = &req->aiocbp->aiocb;
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if (__aio_notify_only (&aiocbp->aio_sigevent) != 0)
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if (__aio_notify_only (&aiocbp->aio_sigevent, req->caller_pid) != 0)
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{
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/* XXX What shall we do if already an error is set by
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read/write/fsync? */
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@ -89,7 +90,7 @@ __aio_notify (struct requestlist *req)
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this request is the last one, send the signal. */
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if (*waitlist->counterp == 0)
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{
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__aio_notify_only (waitlist->sigevp);
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__aio_notify_only (waitlist->sigevp, waitlist->caller_pid);
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/* This is tricky. See lio_listio.c for the reason why
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this works. */
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free ((void *) waitlist->counterp);
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@ -1,5 +1,5 @@
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/* Suspend until termination of a requests.
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Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -64,6 +64,7 @@ aio_suspend (list, nent, timeout)
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waitlist[cnt].next = requestlist[cnt]->waiting;
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waitlist[cnt].counterp = &dummy;
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waitlist[cnt].sigevp = NULL;
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waitlist[cnt].caller_pid = 0; /* Not needed. */
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requestlist[cnt]->waiting = &waitlist[cnt];
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none = 0;
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}
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@ -1,5 +1,5 @@
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/* Enqueue and list of read or write requests.
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Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -21,6 +21,7 @@
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#include <aio.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "aio_misc.h"
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@ -77,8 +78,17 @@ lio_listio (mode, list, nent, sig)
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{
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/* We don't have anything to do except signalling if we work
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asynchronously. */
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/* Release the mutex. We do this before raising a signal since the
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signal handler might do a `siglongjmp' and then the mutex is
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locked forever. */
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pthread_mutex_unlock (&__aio_requests_mutex);
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if (mode == LIO_NOWAIT)
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__aio_notify_only (sig);
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__aio_notify_only (sig,
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sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
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return result;
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}
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else if (mode == LIO_WAIT)
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{
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@ -95,6 +105,7 @@ lio_listio (mode, list, nent, sig)
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waitlist[cnt].next = requests[cnt]->waiting;
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waitlist[cnt].counterp = &total;
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waitlist[cnt].sigevp = NULL;
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waitlist[cnt].caller_pid = 0; /* Not needed. */
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requests[cnt]->waiting = &waitlist[cnt];
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++total;
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}
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@ -130,6 +141,7 @@ lio_listio (mode, list, nent, sig)
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}
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else
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{
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pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
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total = 0;
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for (cnt = 0; cnt < nent; ++cnt)
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@ -140,6 +152,7 @@ lio_listio (mode, list, nent, sig)
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waitlist->list[cnt].next = requests[cnt]->waiting;
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waitlist->list[cnt].counterp = &waitlist->counter;
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waitlist->list[cnt].sigevp = &waitlist->sigev;
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waitlist->list[cnt].caller_pid = caller_pid;
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requests[cnt]->waiting = &waitlist->list[cnt];
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++total;
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}
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@ -1,5 +1,5 @@
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/* Enqueue and list of read or write requests, 64bit offset version.
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Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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@ -21,6 +21,7 @@
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#include <aio.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "aio_misc.h"
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@ -77,8 +78,17 @@ lio_listio64 (mode, list, nent, sig)
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{
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/* We don't have anything to do except signalling if we work
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asynchronously. */
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/* Release the mutex. We do this before raising a signal since the
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signal handler might do a `siglongjmp' and then the mutex is
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locked forever. */
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pthread_mutex_unlock (&__aio_requests_mutex);
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if (mode == LIO_NOWAIT)
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__aio_notify_only (sig);
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__aio_notify_only (sig,
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sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
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return result;
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}
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else if (mode == LIO_WAIT)
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{
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@ -95,6 +105,7 @@ lio_listio64 (mode, list, nent, sig)
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waitlist[cnt].next = requests[cnt]->waiting;
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waitlist[cnt].counterp = &total;
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waitlist[cnt].sigevp = NULL;
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waitlist[cnt].caller_pid = 0; /* Not needed. */
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requests[cnt]->waiting = &waitlist[cnt];
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++total;
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}
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@ -130,6 +141,7 @@ lio_listio64 (mode, list, nent, sig)
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}
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else
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{
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pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
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total = 0;
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for (cnt = 0; cnt < nent; ++cnt)
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@ -140,6 +152,7 @@ lio_listio64 (mode, list, nent, sig)
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waitlist->list[cnt].next = requests[cnt]->waiting;
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waitlist->list[cnt].counterp = &waitlist->counter;
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waitlist->list[cnt].sigevp = &waitlist->sigev;
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waitlist->list[cnt].caller_pid = caller_pid;
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requests[cnt]->waiting = &waitlist->list[cnt];
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++total;
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}
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@ -1,4 +1,4 @@
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/* Copyright (C) 1997 Free Software Foundation, Inc.
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/* Copyright (C) 1997, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -23,7 +23,7 @@
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#include "aio_misc.h"
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int
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__aio_sigqueue (int sig, const union sigval val)
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__aio_sigqueue (int sig, const union sigval val, pid_t caller_pid)
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{
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__set_errno (ENOSYS);
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return -1;
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@ -1,4 +1,4 @@
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/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -32,9 +32,10 @@ extern int __syscall_rt_sigqueueinfo (int, int, siginfo_t *);
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/* Return any pending signal or wait for one for the given time. */
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int
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__aio_sigqueue (sig, val)
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__aio_sigqueue (sig, val, caller_pid)
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int sig;
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const union sigval val;
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pid_t caller_pid;
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{
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siginfo_t info;
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@ -42,7 +43,7 @@ __aio_sigqueue (sig, val)
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info.si_signo = sig;
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info.si_errno = 0;
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info.si_code = SI_ASYNCIO;
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info.si_pid = getpid ();
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info.si_pid = caller_pid;
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info.si_uid = getuid ();
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info.si_value = val;
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