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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /sysdeps/pthread
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
Diffstat (limited to 'sysdeps/pthread')
-rw-r--r--sysdeps/pthread/Versions5
-rw-r--r--sysdeps/pthread/aio_cancel.c4
-rw-r--r--sysdeps/pthread/aio_fsync.c4
-rw-r--r--sysdeps/pthread/aio_misc.c5
-rw-r--r--sysdeps/pthread/aio_misc.h7
-rw-r--r--sysdeps/pthread/aio_notify.c22
-rw-r--r--sysdeps/pthread/aio_read.c4
-rw-r--r--sysdeps/pthread/aio_read64.c4
-rw-r--r--sysdeps/pthread/aio_suspend.c41
-rw-r--r--sysdeps/pthread/aio_write.c4
-rw-r--r--sysdeps/pthread/aio_write64.c4
-rw-r--r--sysdeps/pthread/configure2
-rw-r--r--sysdeps/pthread/lio_listio.c107
-rw-r--r--sysdeps/pthread/lio_listio64.c6
14 files changed, 166 insertions, 53 deletions
diff --git a/sysdeps/pthread/Versions b/sysdeps/pthread/Versions
new file mode 100644
index 0000000..a71cffb
--- /dev/null
+++ b/sysdeps/pthread/Versions
@@ -0,0 +1,5 @@
+librt {
+ GLIBC_2.4 {
+ lio_listio; lio_listio64;
+ }
+}
diff --git a/sysdeps/pthread/aio_cancel.c b/sysdeps/pthread/aio_cancel.c
index a37b2c7..aa1ee44 100644
--- a/sysdeps/pthread/aio_cancel.c
+++ b/sysdeps/pthread/aio_cancel.c
@@ -1,5 +1,5 @@
/* Cancel requests associated with given file descriptor.
- Copyright (C) 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 2000, 2002, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -34,7 +34,7 @@
#include <assert.h>
#include <errno.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
int
diff --git a/sysdeps/pthread/aio_fsync.c b/sysdeps/pthread/aio_fsync.c
index 4c90d69..47cc299 100644
--- a/sysdeps/pthread/aio_fsync.c
+++ b/sysdeps/pthread/aio_fsync.c
@@ -1,5 +1,5 @@
/* Synchronize I/O in given file descriptor.
- Copyright (C) 1997, 1999, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1999, 2002, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -30,7 +30,7 @@
#undef aio_fsync64
#include <errno.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
int
diff --git a/sysdeps/pthread/aio_misc.c b/sysdeps/pthread/aio_misc.c
index 5c9ccb4..3e1dbe9 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, 2003, 2004
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2006
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -46,8 +46,7 @@ __aio_create_helper_thread (pthread_t *threadp, void *(*tf) (void *), void *arg)
(void) pthread_attr_destroy (&attr);
return ret;
-}
-
+}
#endif
static void add_request_to_runlist (struct requestlist *newrequest);
diff --git a/sysdeps/pthread/aio_misc.h b/sysdeps/pthread/aio_misc.h
index 44d53b0..50962c7 100644
--- a/sysdeps/pthread/aio_misc.h
+++ b/sysdeps/pthread/aio_misc.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1997,1999,2000,2001,2003,2006 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
@@ -46,7 +46,12 @@ struct waitlist
{
struct waitlist *next;
+ /* The next two fields is used in synchronous `lio_listio' operations. */
+#ifndef DONT_NEED_AIO_MISC_COND
pthread_cond_t *cond;
+#endif
+ int *result;
+
volatile int *counterp;
/* The next field is used in asynchronous `lio_listio' operations. */
struct sigevent *sigevp;
diff --git a/sysdeps/pthread/aio_notify.c b/sysdeps/pthread/aio_notify.c
index 877e8d9..3f7f70e 100644
--- a/sysdeps/pthread/aio_notify.c
+++ b/sysdeps/pthread/aio_notify.c
@@ -1,6 +1,5 @@
/* Notify initiator of AIO request.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1997-2001, 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -144,15 +143,24 @@ __aio_notify (struct requestlist *req)
{
struct waitlist *next = waitlist->next;
- /* Decrement the counter. This is used in both cases. */
- --*waitlist->counterp;
-
if (waitlist->sigevp == NULL)
- pthread_cond_signal (waitlist->cond);
+ {
+ if (waitlist->result != NULL && aiocbp->__return_value == -1)
+ *waitlist->result = -1;
+
+#ifdef DONT_NEED_AIO_MISC_COND
+ AIO_MISC_NOTIFY (waitlist);
+#else
+ /* Decrement the counter. */
+ --*waitlist->counterp;
+
+ pthread_cond_signal (waitlist->cond);
+#endif
+ }
else
/* This is part of a asynchronous `lio_listio' operation. If
this request is the last one, send the signal. */
- if (*waitlist->counterp == 0)
+ if (--*waitlist->counterp == 0)
{
#ifdef BROKEN_THREAD_SIGNALS
__aio_notify_only (waitlist->sigevp, waitlist->caller_pid);
diff --git a/sysdeps/pthread/aio_read.c b/sysdeps/pthread/aio_read.c
index 62646fb..973c6cd 100644
--- a/sysdeps/pthread/aio_read.c
+++ b/sysdeps/pthread/aio_read.c
@@ -1,5 +1,5 @@
/* Asynchronous read.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1999, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -20,7 +20,7 @@
#include <aio.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
int
diff --git a/sysdeps/pthread/aio_read64.c b/sysdeps/pthread/aio_read64.c
index f91b08b..a3a427d 100644
--- a/sysdeps/pthread/aio_read64.c
+++ b/sysdeps/pthread/aio_read64.c
@@ -1,5 +1,5 @@
/* Asynchronous read, 64bit offset version.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1999, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -20,7 +20,7 @@
#include <aio.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
int
diff --git a/sysdeps/pthread/aio_suspend.c b/sysdeps/pthread/aio_suspend.c
index 207dad9..b85b16d 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;
diff --git a/sysdeps/pthread/aio_write.c b/sysdeps/pthread/aio_write.c
index f5e89e9..d61c5fb 100644
--- a/sysdeps/pthread/aio_write.c
+++ b/sysdeps/pthread/aio_write.c
@@ -1,5 +1,5 @@
/* Asynchronous write.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1999, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -20,7 +20,7 @@
#include <aio.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
int
diff --git a/sysdeps/pthread/aio_write64.c b/sysdeps/pthread/aio_write64.c
index b9c84b7..4e23a3a 100644
--- a/sysdeps/pthread/aio_write64.c
+++ b/sysdeps/pthread/aio_write64.c
@@ -1,5 +1,5 @@
/* Asynchronous write, 64bit offset version.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1999, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -20,7 +20,7 @@
#include <aio.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
int
diff --git a/sysdeps/pthread/configure b/sysdeps/pthread/configure
index 229414d..e39d311 100644
--- a/sysdeps/pthread/configure
+++ b/sysdeps/pthread/configure
@@ -1,3 +1,3 @@
-# Local configure fragment for sysdeps/unix/sysv/linux.
+# Local configure fragment for sysdeps/pthread.
DEFINES="$DEFINES -D_LIBC_REENTRANT"
diff --git a/sysdeps/pthread/lio_listio.c b/sysdeps/pthread/lio_listio.c
index 5b98837..c652404 100644
--- a/sysdeps/pthread/lio_listio.c
+++ b/sysdeps/pthread/lio_listio.c
@@ -1,5 +1,6 @@
/* Enqueue and list of read or write requests.
- Copyright (C) 1997,1998,1999,2000,2001,2003 Free Software Foundation, Inc.
+ Copyright (C) 1997,1998,1999,2000,2001,2003,2005,2006
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -25,11 +26,14 @@
#include <stdlib.h>
#include <unistd.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
#define LIO_OPCODE_BASE 0
#endif
+#include <shlib-compat.h>
+
+
/* We need this special structure to handle asynchronous I/O. */
struct async_waitlist
{
@@ -39,12 +43,22 @@ struct async_waitlist
};
-int
-lio_listio (mode, list, nent, sig)
- int mode;
- struct aiocb *const list[];
- int nent;
- struct sigevent *sig;
+/* The code in glibc 2.1 to glibc 2.4 issued only one event when all
+ requests submitted with lio_listio finished. The existing practice
+ is to issue events for the individual requests as well. This is
+ what the new code does. */
+#if SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_4)
+# define LIO_MODE(mode) ((mode) & 127)
+# define NO_INDIVIDUAL_EVENT_P(mode) ((mode) & 128)
+#else
+# define LIO_MODE(mode) mode
+# define NO_INDIVIDUAL_EVENT_P(mode) 0
+#endif
+
+
+static int
+lio_listio_internal (int mode, struct aiocb *const list[], int nent,
+ struct sigevent *sig)
{
struct sigevent defsigev;
struct requestlist *requests[nent];
@@ -52,13 +66,6 @@ lio_listio (mode, list, nent, sig)
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;
@@ -73,7 +80,9 @@ lio_listio (mode, list, nent, sig)
for (cnt = 0; cnt < nent; ++cnt)
if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
{
- list[cnt]->aio_sigevent.sigev_notify = SIGEV_NONE;
+ if (NO_INDIVIDUAL_EVENT_P (mode))
+ list[cnt]->aio_sigevent.sigev_notify = SIGEV_NONE;
+
requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
(list[cnt]->aio_lio_opcode
| LIO_OPCODE_BASE));
@@ -99,7 +108,7 @@ lio_listio (mode, list, nent, sig)
locked forever. */
pthread_mutex_unlock (&__aio_requests_mutex);
- if (mode == LIO_NOWAIT)
+ if (LIO_MODE (mode) == LIO_NOWAIT)
{
#ifdef BROKEN_THREAD_SIGNALS
__aio_notify_only (sig,
@@ -111,11 +120,13 @@ lio_listio (mode, list, nent, sig)
return result;
}
- else if (mode == LIO_WAIT)
+ else if (LIO_MODE (mode) == LIO_WAIT)
{
+#ifndef DONT_NEED_AIO_MISC_COND
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
- struct waitlist waitlist[nent];
int oldstate;
+#endif
+ struct waitlist waitlist[nent];
total = 0;
for (cnt = 0; cnt < nent; ++cnt)
@@ -124,7 +135,10 @@ lio_listio (mode, list, nent, sig)
if (requests[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
{
+#ifndef DONT_NEED_AIO_MISC_COND
waitlist[cnt].cond = &cond;
+#endif
+ waitlist[cnt].result = &result;
waitlist[cnt].next = requests[cnt]->waiting;
waitlist[cnt].counterp = &total;
waitlist[cnt].sigevp = NULL;
@@ -136,21 +150,32 @@ lio_listio (mode, list, nent, sig)
}
}
- /* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancelation
+#ifdef DONT_NEED_AIO_MISC_COND
+ AIO_MISC_WAIT (result, total, NULL, 0);
+#else
+ /* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancellation
points we must be careful. We added entries to the waiting lists
- which we must remove. So defer cancelation for now. */
+ which we must remove. So defer cancellation 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. */
+ /* Now it's time to restore the cancellation state. */
pthread_setcancelstate (oldstate, NULL);
/* Release the conditional variable. */
if (pthread_cond_destroy (&cond) != 0)
/* This must never happen. */
abort ();
+#endif
+
+ /* If any of the I/O requests failed, return -1 and set errno. */
+ if (result != 0)
+ {
+ __set_errno (result == EINTR ? EINTR : EIO);
+ result = -1;
+ }
}
else
{
@@ -179,7 +204,10 @@ lio_listio (mode, list, nent, sig)
if (requests[cnt] != NULL
&& list[cnt]->aio_lio_opcode != LIO_NOP)
{
+#ifndef DONT_NEED_AIO_MISC_COND
waitlist->list[cnt].cond = NULL;
+#endif
+ waitlist->list[cnt].result = NULL;
waitlist->list[cnt].next = requests[cnt]->waiting;
waitlist->list[cnt].counterp = &waitlist->counter;
waitlist->list[cnt].sigevp = &waitlist->sigev;
@@ -201,3 +229,38 @@ lio_listio (mode, list, nent, sig)
return result;
}
+
+
+#if SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_4)
+int
+attribute_compat_text_section
+__lio_listio_21 (int mode, struct aiocb *const list[], int nent,
+ struct sigevent *sig)
+{
+ /* Check arguments. */
+ if (mode != LIO_WAIT && mode != LIO_NOWAIT)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ return lio_listio_internal (mode | LIO_NO_INDIVIDUAL_EVENT, list, nent, sig);
+}
+compat_symbol (librt, __lio_listio_21, lio_listio, GLIBC_2_1);
+#endif
+
+
+int
+__lio_listio_item_notify (int mode, struct aiocb *const list[], int nent,
+ struct sigevent *sig)
+{
+ /* Check arguments. */
+ if (mode != LIO_WAIT && mode != LIO_NOWAIT)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ return lio_listio_internal (mode, list, nent, sig);
+}
+versioned_symbol (librt, __lio_listio_item_notify, lio_listio, GLIBC_2_4);
diff --git a/sysdeps/pthread/lio_listio64.c b/sysdeps/pthread/lio_listio64.c
index fee1e59..c6b7cf7 100644
--- a/sysdeps/pthread/lio_listio64.c
+++ b/sysdeps/pthread/lio_listio64.c
@@ -1,5 +1,5 @@
/* Enqueue and list of read or write requests, 64bit offset version.
- Copyright (C) 1997, 1998, 1999, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1997,1998,1999,2003,2005,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -24,9 +24,11 @@
#include <stdlib.h>
#include <unistd.h>
-#include "aio_misc.h"
+#include <aio_misc.h>
#define lio_listio lio_listio64
+#define __lio_listio_21 __lio_listio64_21
+#define __lio_listio_item_notify __lio_listio64_item_notify
#define aiocb aiocb64
#define LIO_OPCODE_BASE 128
#include <lio_listio.c>