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authorUlrich Drepper <drepper@redhat.com>2003-07-23 18:50:26 +0000
committerUlrich Drepper <drepper@redhat.com>2003-07-23 18:50:26 +0000
commit6bc0b95489067acc56efb0d8e1d88fe18644389f (patch)
tree43d353c9c585b610c2c72458033737833143ecaf /sysdeps/pthread
parent9d79e0377b08773ec4f7ec38479b1563606f7ef7 (diff)
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Update.
2003-07-23 Jakub Jelinek <jakub@redhat.com> * sysdeps/pthread/lio_listio.c (LIO_OPCODE_BASE): Define. (lio_listio): Use it. * sysdeps/pthread/lio_listio64.c: Include lio_listio.c instead of after few defines to avoid duplication.
Diffstat (limited to 'sysdeps/pthread')
-rw-r--r--sysdeps/pthread/lio_listio.c8
-rw-r--r--sysdeps/pthread/lio_listio64.c154
2 files changed, 11 insertions, 151 deletions
diff --git a/sysdeps/pthread/lio_listio.c b/sysdeps/pthread/lio_listio.c
index 9540566..0ea3d92 100644
--- a/sysdeps/pthread/lio_listio.c
+++ b/sysdeps/pthread/lio_listio.c
@@ -1,5 +1,5 @@
/* Enqueue and list of read or write requests.
- 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 <drepper@cygnus.com>, 1997.
@@ -18,6 +18,7 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+#ifndef lio_listio
#include <aio.h>
#include <assert.h>
#include <errno.h>
@@ -26,6 +27,8 @@
#include "aio_misc.h"
+#define LIO_OPCODE_BASE 0
+#endif
/* We need this special structure to handle asynchronous I/O. */
struct async_waitlist
@@ -72,7 +75,8 @@ lio_listio (mode, list, nent, sig)
{
list[cnt]->aio_sigevent.sigev_notify = SIGEV_NONE;
requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
- list[cnt]->aio_lio_opcode);
+ (list[cnt]->aio_lio_opcode
+ | LIO_OPCODE_BASE));
if (requests[cnt] != NULL)
/* Successfully enqueued. */
diff --git a/sysdeps/pthread/lio_listio64.c b/sysdeps/pthread/lio_listio64.c
index 165ce05..fee1e59 100644
--- a/sysdeps/pthread/lio_listio64.c
+++ b/sysdeps/pthread/lio_listio64.c
@@ -19,158 +19,14 @@
02111-1307 USA. */
#include <aio.h>
+#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include "aio_misc.h"
-
-/* We need this special structure to handle asynchronous I/O. */
-struct async_waitlist
- {
- int counter;
- struct sigevent sigev;
- struct waitlist list[0];
- };
-
-
-int
-lio_listio64 (mode, list, nent, sig)
- int mode;
- struct aiocb64 *const list[];
- int nent;
- struct sigevent *sig;
-{
- struct sigevent defsigev;
- struct requestlist *requests[nent];
- int cnt;
- volatile int total = 0;
- int result = 0;
-
- /* Check arguments. */
- if (mode != LIO_WAIT && mode != LIO_NOWAIT)
- {
- __set_errno (EINVAL);
- return -1;
- }
-
- if (sig == NULL)
- {
- defsigev.sigev_notify = SIGEV_NONE;
- sig = &defsigev;
- }
-
- /* Request the mutex. */
- pthread_mutex_lock (&__aio_requests_mutex);
-
- /* Now we can enqueue all requests. Since we already acquired the
- mutex the enqueue function need not do this. */
- for (cnt = 0; cnt < nent; ++cnt)
- if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
- requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
- (list[cnt]->aio_lio_opcode
- | 128));
- if (requests[cnt] != NULL)
- /* Successfully enqueued. */
- ++total;
- else
- /* Signal that we've seen an error. `errno' and the error code
- of the aiocb will tell more. */
- result = -1;
- }
-
- if (total == 0)
- {
- /* 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,
- sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
-
- return result;
- }
- else if (mode == LIO_WAIT)
- {
- pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
- struct waitlist waitlist[nent];
- int oldstate;
-
- total = 0;
- for (cnt = 0; cnt < nent; ++cnt)
- if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP
- && requests[cnt] != NULL)
- {
- waitlist[cnt].cond = &cond;
- 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;
- }
-
- /* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancelation
- points we must be careful. We added entries to the waiting lists
- which we must remove. So defer cancelation for now. */
- pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &oldstate);
-
- while (total > 0)
- pthread_cond_wait (&cond, &__aio_requests_mutex);
-
- /* Now it's time to restore the cancelation state. */
- pthread_setcancelstate (oldstate, NULL);
-
- /* Release the conditional variable. */
- if (pthread_cond_destroy (&cond) != 0)
- /* This must never happen. */
- abort ();
- }
- else
- {
- struct async_waitlist *waitlist;
-
- waitlist = (struct async_waitlist *)
- malloc (sizeof (struct async_waitlist)
- + (nent * sizeof (struct waitlist)));
-
- if (waitlist == NULL)
- {
- __set_errno (EAGAIN);
- result = -1;
- }
- else
- {
- pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
- total = 0;
-
- for (cnt = 0; cnt < nent; ++cnt)
- if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP
- && requests[cnt] != NULL)
- {
- waitlist->list[cnt].cond = NULL;
- 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;
- }
-
- waitlist->counter = total;
- waitlist->sigev = *sig;
- }
- }
-
- /* Release the mutex. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-
- return result;
-}
+#define lio_listio lio_listio64
+#define aiocb aiocb64
+#define LIO_OPCODE_BASE 128
+#include <lio_listio.c>