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Diffstat (limited to 'sysdeps/pthread/aio_suspend.c')
-rw-r--r--sysdeps/pthread/aio_suspend.c41
1 files changed, 36 insertions, 5 deletions
diff --git a/sysdeps/pthread/aio_suspend.c b/sysdeps/pthread/aio_suspend.c
index 207dad964e..b85b16d10e 100644
--- a/sysdeps/pthread/aio_suspend.c
+++ b/sysdeps/pthread/aio_suspend.c
@@ -1,5 +1,5 @@
/* Suspend until termination of a requests.
- Copyright (C) 1997,1998,1999,2000,2002,2003 Free Software Foundation, Inc.
+ Copyright (C) 1997-2000,2002,2003,2005,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -36,7 +36,7 @@
#include <sys/time.h>
#include <bits/libc-lock.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
struct clparam
@@ -44,7 +44,9 @@ struct clparam
const struct aiocb *const *list;
struct waitlist *waitlist;
struct requestlist **requestlist;
+#ifndef DONT_NEED_AIO_MISC_COND
pthread_cond_t *cond;
+#endif
int nent;
};
@@ -52,6 +54,12 @@ struct clparam
static void
cleanup (void *arg)
{
+#ifdef DONT_NEED_AIO_MISC_COND
+ /* Acquire the mutex. If pthread_cond_*wait is used this would
+ happen implicitly. */
+ pthread_mutex_lock (&__aio_requests_mutex);
+#endif
+
const struct clparam *param = (const struct clparam *) arg;
/* Now remove the entry in the waiting list for all requests
@@ -75,8 +83,10 @@ cleanup (void *arg)
*listp = (*listp)->next;
}
+#ifndef DONT_NEED_AIO_MISC_COND
/* Release the conditional variable. */
(void) pthread_cond_destroy (param->cond);
+#endif
/* Release the mutex. */
pthread_mutex_unlock (&__aio_requests_mutex);
@@ -89,13 +99,21 @@ aio_suspend (list, nent, timeout)
int nent;
const struct timespec *timeout;
{
+ if (__builtin_expect (nent < 0, 0))
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
struct waitlist waitlist[nent];
struct requestlist *requestlist[nent];
+#ifndef DONT_NEED_AIO_MISC_COND
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+#endif
int cnt;
bool any = false;
int result = 0;
- int dummy;
+ int cntr = 1;
/* Request the mutex. */
pthread_mutex_lock (&__aio_requests_mutex);
@@ -111,9 +129,12 @@ aio_suspend (list, nent, timeout)
if (requestlist[cnt] != NULL)
{
+#ifndef DONT_NEED_AIO_MISC_COND
waitlist[cnt].cond = &cond;
+#endif
+ waitlist[cnt].result = NULL;
waitlist[cnt].next = requestlist[cnt]->waiting;
- waitlist[cnt].counterp = &dummy;
+ waitlist[cnt].counterp = &cntr;
waitlist[cnt].sigevp = NULL;
#ifdef BROKEN_THREAD_SIGNALS
waitlist[cnt].caller_pid = 0; /* Not needed. */
@@ -139,12 +160,17 @@ aio_suspend (list, nent, timeout)
.list = list,
.waitlist = waitlist,
.requestlist = requestlist,
+#ifndef DONT_NEED_AIO_MISC_COND
.cond = &cond,
+#endif
.nent = nent
};
pthread_cleanup_push (cleanup, &clparam);
+#ifdef DONT_NEED_AIO_MISC_COND
+ AIO_MISC_WAIT (result, cntr, timeout, 1);
+#else
if (timeout == NULL)
result = pthread_cond_wait (&cond, &__aio_requests_mutex);
else
@@ -166,6 +192,7 @@ aio_suspend (list, nent, timeout)
result = pthread_cond_timedwait (&cond, &__aio_requests_mutex,
&abstime);
}
+#endif
pthread_cleanup_pop (0);
}
@@ -189,19 +216,23 @@ aio_suspend (list, nent, timeout)
*listp = (*listp)->next;
}
+#ifndef DONT_NEED_AIO_MISC_COND
/* Release the conditional variable. */
if (__builtin_expect (pthread_cond_destroy (&cond) != 0, 0))
/* This must never happen. */
abort ();
+#endif
if (result != 0)
{
- /* An error occurred. Possibly it's EINTR. We have to translate
+#ifndef DONT_NEED_AIO_MISC_COND
+ /* An error occurred. Possibly it's ETIMEDOUT. We have to translate
the timeout error report of `pthread_cond_timedwait' to the
form expected from `aio_suspend'. */
if (result == ETIMEDOUT)
__set_errno (EAGAIN);
else
+#endif
__set_errno (result);
result = -1;