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-rw-r--r--rt/aio_misc.c2
-rw-r--r--rt/aio_misc.h15
-rw-r--r--rt/aio_notify.c11
-rw-r--r--rt/aio_suspend.c3
-rw-r--r--rt/lio_listio.c17
-rw-r--r--rt/lio_listio64.c17
6 files changed, 52 insertions, 13 deletions
diff --git a/rt/aio_misc.c b/rt/aio_misc.c
index fb5fbf6..fa3c75c 100644
--- a/rt/aio_misc.c
+++ b/rt/aio_misc.c
@@ -265,6 +265,8 @@ __aio_enqueue_request (aiocb_union *aiocbp, int operation)
return NULL;
}
newp->aiocbp = aiocbp;
+ newp->caller_pid = (aiocbp->aiocb.aio_sigevent.sigev_notify == SIGEV_SIGNAL
+ ? getpid () : 0);
newp->waiting = NULL;
aiocbp->aiocb.__abs_prio = prio;
diff --git a/rt/aio_misc.h b/rt/aio_misc.h
index af8e247..e3c93be 100644
--- a/rt/aio_misc.h
+++ b/rt/aio_misc.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -50,6 +50,9 @@ struct waitlist
volatile int *counterp;
/* The next field is used in asynchronous `lio_listio' operations. */
struct sigevent *sigevp;
+ /* XXX See requestlist, it's used to work around the broken signal
+ handling in Linux. */
+ pid_t caller_pid;
};
@@ -76,6 +79,10 @@ struct requestlist
/* Pointer to the actual data. */
aiocb_union *aiocbp;
+ /* PID of the initiator thread.
+ XXX This is only necessary for the broken signal handling on Linux. */
+ pid_t caller_pid;
+
/* List of waiting processes. */
struct waitlist *waiting;
};
@@ -104,9 +111,11 @@ extern void __aio_free_request (struct requestlist *req) internal_function;
extern void __aio_notify (struct requestlist *req) internal_function;
/* Notify initiator of request. */
-extern int __aio_notify_only (struct sigevent *sigev) internal_function;
+extern int __aio_notify_only (struct sigevent *sigev, pid_t caller_pid)
+ internal_function;
/* Send the signal. */
-extern int __aio_sigqueue (int sig, const union sigval val) internal_function;
+extern int __aio_sigqueue (int sig, const union sigval val, pid_t caller_pid)
+ internal_function;
#endif /* aio_misc.h */
diff --git a/rt/aio_notify.c b/rt/aio_notify.c
index 8c57d72..54e9959 100644
--- a/rt/aio_notify.c
+++ b/rt/aio_notify.c
@@ -1,5 +1,5 @@
/* Notify initiator of AIO request.
- Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -25,7 +25,7 @@
int
internal_function
-__aio_notify_only (struct sigevent *sigev)
+__aio_notify_only (struct sigevent *sigev, pid_t caller_pid)
{
int result = 0;
@@ -51,7 +51,8 @@ __aio_notify_only (struct sigevent *sigev)
}
else if (sigev->sigev_notify == SIGEV_SIGNAL)
/* We have to send a signal. */
- if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value) < 0)
+ if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid)
+ < 0)
result = -1;
return result;
@@ -65,7 +66,7 @@ __aio_notify (struct requestlist *req)
struct waitlist *waitlist;
struct aiocb *aiocbp = &req->aiocbp->aiocb;
- if (__aio_notify_only (&aiocbp->aio_sigevent) != 0)
+ if (__aio_notify_only (&aiocbp->aio_sigevent, req->caller_pid) != 0)
{
/* XXX What shall we do if already an error is set by
read/write/fsync? */
@@ -89,7 +90,7 @@ __aio_notify (struct requestlist *req)
this request is the last one, send the signal. */
if (*waitlist->counterp == 0)
{
- __aio_notify_only (waitlist->sigevp);
+ __aio_notify_only (waitlist->sigevp, waitlist->caller_pid);
/* This is tricky. See lio_listio.c for the reason why
this works. */
free ((void *) waitlist->counterp);
diff --git a/rt/aio_suspend.c b/rt/aio_suspend.c
index 70c5e1a..6736857 100644
--- a/rt/aio_suspend.c
+++ b/rt/aio_suspend.c
@@ -1,5 +1,5 @@
/* Suspend until termination of a requests.
- Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -64,6 +64,7 @@ aio_suspend (list, nent, timeout)
waitlist[cnt].next = requestlist[cnt]->waiting;
waitlist[cnt].counterp = &dummy;
waitlist[cnt].sigevp = NULL;
+ waitlist[cnt].caller_pid = 0; /* Not needed. */
requestlist[cnt]->waiting = &waitlist[cnt];
none = 0;
}
diff --git a/rt/lio_listio.c b/rt/lio_listio.c
index 03c3bf2..13d1b79 100644
--- a/rt/lio_listio.c
+++ b/rt/lio_listio.c
@@ -1,5 +1,5 @@
/* Enqueue and list of read or write requests.
- Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -21,6 +21,7 @@
#include <aio.h>
#include <errno.h>
#include <stdlib.h>
+#include <unistd.h>
#include "aio_misc.h"
@@ -77,8 +78,17 @@ lio_listio (mode, list, nent, sig)
{
/* We don't have anything to do except signalling if we work
asynchronously. */
+
+ /* Release the mutex. We do this before raising a signal since the
+ signal handler might do a `siglongjmp' and then the mutex is
+ locked forever. */
+ pthread_mutex_unlock (&__aio_requests_mutex);
+
if (mode == LIO_NOWAIT)
- __aio_notify_only (sig);
+ __aio_notify_only (sig,
+ sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
+
+ return result;
}
else if (mode == LIO_WAIT)
{
@@ -95,6 +105,7 @@ lio_listio (mode, list, nent, sig)
waitlist[cnt].next = requests[cnt]->waiting;
waitlist[cnt].counterp = &total;
waitlist[cnt].sigevp = NULL;
+ waitlist[cnt].caller_pid = 0; /* Not needed. */
requests[cnt]->waiting = &waitlist[cnt];
++total;
}
@@ -130,6 +141,7 @@ lio_listio (mode, list, nent, sig)
}
else
{
+ pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
total = 0;
for (cnt = 0; cnt < nent; ++cnt)
@@ -140,6 +152,7 @@ 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;
+ waitlist->list[cnt].caller_pid = caller_pid;
requests[cnt]->waiting = &waitlist->list[cnt];
++total;
}
diff --git a/rt/lio_listio64.c b/rt/lio_listio64.c
index 9cb1125..5df2596 100644
--- a/rt/lio_listio64.c
+++ b/rt/lio_listio64.c
@@ -1,5 +1,5 @@
/* Enqueue and list of read or write requests, 64bit offset version.
- Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -21,6 +21,7 @@
#include <aio.h>
#include <errno.h>
#include <stdlib.h>
+#include <unistd.h>
#include "aio_misc.h"
@@ -77,8 +78,17 @@ lio_listio64 (mode, list, nent, sig)
{
/* We don't have anything to do except signalling if we work
asynchronously. */
+
+ /* Release the mutex. We do this before raising a signal since the
+ signal handler might do a `siglongjmp' and then the mutex is
+ locked forever. */
+ pthread_mutex_unlock (&__aio_requests_mutex);
+
if (mode == LIO_NOWAIT)
- __aio_notify_only (sig);
+ __aio_notify_only (sig,
+ sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
+
+ return result;
}
else if (mode == LIO_WAIT)
{
@@ -95,6 +105,7 @@ lio_listio64 (mode, list, nent, sig)
waitlist[cnt].next = requests[cnt]->waiting;
waitlist[cnt].counterp = &total;
waitlist[cnt].sigevp = NULL;
+ waitlist[cnt].caller_pid = 0; /* Not needed. */
requests[cnt]->waiting = &waitlist[cnt];
++total;
}
@@ -130,6 +141,7 @@ lio_listio64 (mode, list, nent, sig)
}
else
{
+ pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
total = 0;
for (cnt = 0; cnt < nent; ++cnt)
@@ -140,6 +152,7 @@ lio_listio64 (mode, list, nent, sig)
waitlist->list[cnt].next = requests[cnt]->waiting;
waitlist->list[cnt].counterp = &waitlist->counter;
waitlist->list[cnt].sigevp = &waitlist->sigev;
+ waitlist->list[cnt].caller_pid = caller_pid;
requests[cnt]->waiting = &waitlist->list[cnt];
++total;
}
generated by cgit v1.1 at 2024-12-04 01:49:52 +0000