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authorRoland McGrath <roland@gnu.org>2001-06-16 04:47:37 +0000
committerRoland McGrath <roland@gnu.org>2001-06-16 04:47:37 +0000
commit5ec73bb91f231a0d7a3c54183a9282cafd5511cb (patch)
tree42da8a5cc86f92fa1331117501a336064a19ba7f /rt
parent636ccfc8fb4c9bd450fa5b7982771912a602d2b0 (diff)
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2001-06-15 Roland McGrath <roland@frob.com>
* rt/Makefile (aio-routines, clock-routines, timer-routines): New variables, broken out of librt-routines. (librt-routines): Set using those. (extra-libs, extra-libc-others, tests): Set these unconditionally. (distribute): No need for $(librt-map) or $(librt-routines:=.c) here. * sysdeps/generic/aio_fsync.c: New file. * sysdeps/generic/aio_misc.c: New file. * sysdeps/generic/aio_write.c: New file. * sysdeps/generic/aio_write64.c: New file. * sysdeps/generic/aio_read64.c: New file. * sysdeps/generic/aio_read.c: New file. * sysdeps/generic/aio_notify.c: New file. * sysdeps/generic/lio_listio64.c: New file. * sysdeps/generic/lio_listio.c: New file. * sysdeps/generic/aio_cancel.c: New file. * sysdeps/generic/aio_misc.h: New file. * sysdeps/generic/aio_suspend.c: New file. * rt/aio_cancel.c: Moved to ... * sysdeps/pthread/aio_cancel.c: ... here. * rt/aio_fsync.c: Moved to ... * sysdeps/pthread/aio_fsync.c: ... here. * rt/aio_misc.c: Moved to ... * sysdeps/pthread/aio_misc.c: ... here. * rt/aio_misc.h: Moved to ... * sysdeps/pthread/aio_misc.h: ... here. * rt/aio_notify.c: Moved to ... * sysdeps/pthread/aio_notify.c: ... here. * rt/aio_read.c: Moved to ... * sysdeps/pthread/aio_read.c: ... here. * rt/aio_read64.c: Moved to ... * sysdeps/pthread/aio_read64.c: ... here. * rt/aio_suspend.c: Moved to ... * sysdeps/pthread/aio_suspend.c: ... here. * rt/aio_write.c: Moved to ... * sysdeps/pthread/aio_write.c: ... here. * rt/aio_write64.c: Moved to ... * sysdeps/pthread/aio_write64.c: ... here. * rt/lio_listio.c: Moved to ... * sysdeps/pthread/lio_listio.c: ... here. * rt/lio_listio64.c: Moved to ... * sysdeps/pthread/lio_listio64.c: ... here.
Diffstat (limited to 'rt')
-rw-r--r--rt/Makefile30
-rw-r--r--rt/aio_cancel.c142
-rw-r--r--rt/aio_fsync.c50
-rw-r--r--rt/aio_misc.c708
-rw-r--r--rt/aio_misc.h127
-rw-r--r--rt/aio_notify.c119
-rw-r--r--rt/aio_read.c32
-rw-r--r--rt/aio_read64.c32
-rw-r--r--rt/aio_suspend.c151
-rw-r--r--rt/aio_write.c32
-rw-r--r--rt/aio_write64.c32
-rw-r--r--rt/lio_listio.c187
-rw-r--r--rt/lio_listio64.c169
13 files changed, 14 insertions, 1797 deletions
diff --git a/rt/Makefile b/rt/Makefile
index 70e058c..d2037bb 100644
--- a/rt/Makefile
+++ b/rt/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+# Copyright (C) 1997,98,99,2000,01 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
@@ -23,30 +23,28 @@ subdir := rt
headers := aio.h
-librt-routines := aio_cancel aio_error aio_fsync aio_misc aio_read \
+aio-routines := aio_cancel aio_error aio_fsync aio_misc aio_read \
aio_read64 aio_return aio_suspend aio_write \
aio_write64 lio_listio lio_listio64 aio_sigqueue \
- aio_notify get_clockfreq clock_getcpuclockid \
+ aio_notify
+clock-routines := get_clockfreq clock_getcpuclockid \
clock_getres clock_gettime clock_settime \
- clock_nanosleep \
- timer_create timer_delete timer_getoverr \
- timer_gettime timer_settime \
- shm_open shm_unlink
+ clock_nanosleep
+timer-routines := timer_create timer_delete timer_getoverr \
+ timer_gettime timer_settime
+shm-routines := shm_open shm_unlink
-# Make sure that everything is distributed independent of configuration.
-distribute := aio_misc.h $(librt-routines:=.c) $(librt-map)
+librt-routines = $(aio-routines) \
+ $(clock-routines) $(timer-routines) \
+ $(shm-routines)
-include ../Makeconfig
-
-ifeq ($(have-thread-library),yes)
-
-tests := tst-aio tst-aio64 tst-clock tst-shm tst-timer tst-aio2 tst-aio3 \
- tst-aio4 tst-aio5 tst-aio6
+tests := tst-shm tst-clock tst-timer \
+ tst-aio tst-aio64 tst-aio2 tst-aio3 tst-aio4 tst-aio5 tst-aio6
extra-libs := librt
extra-libs-others := $(extra-libs)
-endif
+distribute := aio_misc.h
include ../Rules
diff --git a/rt/aio_cancel.c b/rt/aio_cancel.c
deleted file mode 100644
index c1cfea5..0000000
--- a/rt/aio_cancel.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/* Cancel requests associated with given file descriptor.
- Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-
-/* We use an UGLY hack to prevent gcc from finding us cheating. The
- implementation of aio_cancel and aio_cancel64 are identical and so
- we want to avoid code duplication by using aliases. But gcc sees
- the different parameter lists and prints a warning. We define here
- a function so that aio_cancel64 has no prototype. */
-#define aio_cancel64 XXX
-#include <aio.h>
-/* And undo the hack. */
-#undef aio_cancel64
-
-#include <assert.h>
-#include <errno.h>
-
-#include "aio_misc.h"
-
-
-int
-aio_cancel (fildes, aiocbp)
- int fildes;
- struct aiocb *aiocbp;
-{
- struct requestlist *req = NULL;
- int result = AIO_ALLDONE;
-
- /* Request the mutex. */
- pthread_mutex_lock (&__aio_requests_mutex);
-
- /* We are asked to cancel a specific AIO request. */
- if (aiocbp != NULL)
- {
- /* If the AIO request is not for this descriptor it has no value
- to look for the request block. */
- if (aiocbp->aio_fildes == fildes)
- {
- struct requestlist *last = NULL;
-
- req = __aio_find_req_fd (fildes);
-
- if (req == NULL)
- {
- not_found:
- pthread_mutex_unlock (&__aio_requests_mutex);
- __set_errno (EINVAL);
- return -1;
- }
-
- while (req->aiocbp != (aiocb_union *) aiocbp)
- {
- last = req;
- req = req->next_prio;
- if (req == NULL)
- goto not_found;
- }
-
- /* Don't remove the entry if a thread is already working on it. */
- if (req->running == allocated)
- {
- result = AIO_NOTCANCELED;
- req = NULL;
- }
- else
- {
- /* We can remove the entry. */
- __aio_remove_request (last, req, 0);
-
- result = AIO_CANCELED;
-
- req->next_prio = NULL;
- }
- }
- }
- else
- {
- /* Find the beginning of the list of all requests for this
- desriptor. */
- req = __aio_find_req_fd (fildes);
-
- /* If any request is worked on by a thread it must be the first.
- So either we can delete all requests or all but the first. */
- if (req != NULL)
- {
- if (req->running == allocated)
- {
- struct requestlist *old = req;
- req = req->next_prio;
- old->next_prio = NULL;
-
- result = AIO_NOTCANCELED;
-
- if (req != NULL)
- __aio_remove_request (old, req, 1);
- }
- else
- {
- result = AIO_CANCELED;
-
- /* We can remove the entry. */
- __aio_remove_request (NULL, req, 1);
- }
- }
- }
-
- /* Mark requests as canceled and send signal. */
- while (req != NULL)
- {
- struct requestlist *old = req;
- assert (req->running == yes || req->running == queued);
- req->aiocbp->aiocb.__error_code = ECANCELED;
- req->aiocbp->aiocb.__return_value = -1;
- __aio_notify (req);
- req = req->next_prio;
- __aio_free_request (old);
- }
-
- /* Release the mutex. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-
- return result;
-}
-
-weak_alias (aio_cancel, aio_cancel64)
diff --git a/rt/aio_fsync.c b/rt/aio_fsync.c
deleted file mode 100644
index 298b4ec..0000000
--- a/rt/aio_fsync.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/* Synchronize I/O in given file descriptor.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-
-/* We use an UGLY hack to prevent gcc from finding us cheating. The
- implementation of aio_fsync and aio_fsync64 are identical and so
- we want to avoid code duplication by using aliases. But gcc sees
- the different parameter lists and prints a warning. We define here
- a function so that aio_fsync64 has no prototype. */
-#define aio_fsync64 XXX
-#include <aio.h>
-/* And undo the hack. */
-#undef aio_fsync64
-#include <errno.h>
-
-#include "aio_misc.h"
-
-
-int
-aio_fsync (int op, struct aiocb *aiocbp)
-{
- if (op != O_DSYNC && op != O_SYNC)
- {
- __set_errno (EINVAL);
- return -1;
- }
-
- return (__aio_enqueue_request ((aiocb_union *) aiocbp,
- op == O_SYNC ? LIO_SYNC : LIO_DSYNC) == NULL
- ? -1 : 0);
-}
-
-weak_alias (aio_fsync, aio_fsync64)
diff --git a/rt/aio_misc.c b/rt/aio_misc.c
deleted file mode 100644
index 1026e06..0000000
--- a/rt/aio_misc.c
+++ /dev/null
@@ -1,708 +0,0 @@
-/* Handle general operations.
- Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <aio.h>
-#include <assert.h>
-#include <errno.h>
-#include <limits.h>
-#include <pthread.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-
-#include "aio_misc.h"
-
-static void add_request_to_runlist (struct requestlist *newrequest);
-
-/* Pool of request list entries. */
-static struct requestlist **pool;
-
-/* Number of total and allocated pool entries. */
-static size_t pool_max_size;
-static size_t pool_size;
-
-/* We implement a two dimensional array but allocate each row separately.
- The macro below determines how many entries should be used per row.
- It should better be a power of two. */
-#define ENTRIES_PER_ROW 32
-
-/* How many rows we allocate at once. */
-#define ROWS_STEP 8
-
-/* List of available entries. */
-static struct requestlist *freelist;
-
-/* List of request waiting to be processed. */
-static struct requestlist *runlist;
-
-/* Structure list of all currently processed requests. */
-static struct requestlist *requests;
-
-/* Number of threads currently running. */
-static int nthreads;
-
-/* Number of threads waiting for work to arrive. */
-static int idle_thread_count;
-
-
-/* These are the values used to optimize the use of AIO. The user can
- overwrite them by using the `aio_init' function. */
-static struct aioinit optim =
-{
- 20, /* int aio_threads; Maximal number of threads. */
- 64, /* int aio_num; Number of expected simultanious requests. */
- 0,
- 0,
- 0,
- 0,
- 1,
- 0
-};
-
-
-/* Since the list is global we need a mutex protecting it. */
-pthread_mutex_t __aio_requests_mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
-
-/* When you add a request to the list and there are idle threads present,
- you signal this condition variable. When a thread finishes work, it waits
- on this condition variable for a time before it actually exits. */
-pthread_cond_t __aio_new_request_notification = PTHREAD_COND_INITIALIZER;
-
-
-/* Functions to handle request list pool. */
-static struct requestlist *
-get_elem (void)
-{
- struct requestlist *result;
-
- if (freelist == NULL)
- {
- struct requestlist *new_row;
- int cnt;
-
- assert (sizeof (struct aiocb) == sizeof (struct aiocb64));
-
- if (pool_size + 1 >= pool_max_size)
- {
- size_t new_max_size = pool_max_size + ROWS_STEP;
- struct requestlist **new_tab;
-
- new_tab = (struct requestlist **)
- realloc (pool, new_max_size * sizeof (struct requestlist *));
-
- if (new_tab == NULL)
- return NULL;
-
- pool_max_size = new_max_size;
- pool = new_tab;
- }
-
- /* Allocate the new row. */
- cnt = pool_size == 0 ? optim.aio_num : ENTRIES_PER_ROW;
- new_row = (struct requestlist *) calloc (cnt,
- sizeof (struct requestlist));
- if (new_row == NULL)
- return NULL;
-
- pool[pool_size++] = new_row;
-
- /* Put all the new entries in the freelist. */
- do
- {
- new_row->next_prio = freelist;
- freelist = new_row++;
- }
- while (--cnt > 0);
- }
-
- result = freelist;
- freelist = freelist->next_prio;
-
- return result;
-}
-
-
-void
-internal_function
-__aio_free_request (struct requestlist *elem)
-{
- elem->running = no;
- elem->next_prio = freelist;
- freelist = elem;
-}
-
-
-struct requestlist *
-internal_function
-__aio_find_req (aiocb_union *elem)
-{
- struct requestlist *runp = requests;
- int fildes = elem->aiocb.aio_fildes;
-
- while (runp != NULL && runp->aiocbp->aiocb.aio_fildes < fildes)
- runp = runp->next_fd;
-
- if (runp != NULL)
- {
- if (runp->aiocbp->aiocb.aio_fildes != fildes)
- runp = NULL;
- else
- while (runp != NULL && runp->aiocbp != elem)
- runp = runp->next_prio;
- }
-
- return runp;
-}
-
-
-struct requestlist *
-internal_function
-__aio_find_req_fd (int fildes)
-{
- struct requestlist *runp = requests;
-
- while (runp != NULL && runp->aiocbp->aiocb.aio_fildes < fildes)
- runp = runp->next_fd;
-
- return (runp != NULL && runp->aiocbp->aiocb.aio_fildes == fildes
- ? runp : NULL);
-}
-
-
-void
-internal_function
-__aio_remove_request (struct requestlist *last, struct requestlist *req,
- int all)
-{
- assert (req->running == yes || req->running == queued
- || req->running == done);
-
- if (last != NULL)
- last->next_prio = all ? NULL : req->next_prio;
- else
- {
- if (all || req->next_prio == NULL)
- {
- if (req->last_fd != NULL)
- req->last_fd->next_fd = req->next_fd;
- else
- requests = req->next_fd;
- if (req->next_fd != NULL)
- req->next_fd->last_fd = req->last_fd;
- }
- else
- {
- if (req->last_fd != NULL)
- req->last_fd->next_fd = req->next_prio;
- else
- requests = req->next_prio;
-
- if (req->next_fd != NULL)
- req->next_fd->last_fd = req->next_prio;
-
- req->next_prio->last_fd = req->last_fd;
- req->next_prio->next_fd = req->next_fd;
-
- /* Mark this entry as runnable. */
- req->next_prio->running = yes;
- }
-
- if (req->running == yes)
- {
- struct requestlist *runp = runlist;
-
- last = NULL;
- while (runp != NULL)
- {
- if (runp == req)
- {
- if (last == NULL)
- runlist = runp->next_run;
- else
- last->next_run = runp->next_run;
- break;
- }
- last = runp;
- runp = runp->next_run;
- }
- }
- }
-}
-
-
-/* The thread handler. */
-static void *handle_fildes_io (void *arg);
-
-
-/* User optimization. */
-void
-__aio_init (const struct aioinit *init)
-{
- /* Get the mutex. */
- pthread_mutex_lock (&__aio_requests_mutex);
-
- /* Only allow writing new values if the table is not yet allocated. */
- if (pool == NULL)
- {
- optim.aio_threads = init->aio_threads < 1 ? 1 : init->aio_threads;
- optim.aio_num = (init->aio_num < ENTRIES_PER_ROW
- ? ENTRIES_PER_ROW
- : init->aio_num & ~ENTRIES_PER_ROW);
- }
-
- if (init->aio_idle_time != 0)
- optim.aio_idle_time = init->aio_idle_time;
-
- /* Release the mutex. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-}
-weak_alias (__aio_init, aio_init)
-
-
-/* The main function of the async I/O handling. It enqueues requests
- and if necessary starts and handles threads. */
-struct requestlist *
-internal_function
-__aio_enqueue_request (aiocb_union *aiocbp, int operation)
-{
- int result = 0;
- int policy, prio;
- struct sched_param param;
- struct requestlist *last, *runp, *newp;
- int running = no;
-
- if (operation == LIO_SYNC || operation == LIO_DSYNC)
- aiocbp->aiocb.aio_reqprio = 0;
- else if (aiocbp->aiocb.aio_reqprio < 0
- || aiocbp->aiocb.aio_reqprio > AIO_PRIO_DELTA_MAX)
- {
- /* Invalid priority value. */
- __set_errno (EINVAL);
- aiocbp->aiocb.__error_code = EINVAL;
- aiocbp->aiocb.__return_value = -1;
- return NULL;
- }
-
- /* Compute priority for this request. */
- pthread_getschedparam (pthread_self (), &policy, &param);
- prio = param.sched_priority - aiocbp->aiocb.aio_reqprio;
-
- /* Get the mutex. */
- pthread_mutex_lock (&__aio_requests_mutex);
-
- last = NULL;
- runp = requests;
- /* First look whether the current file descriptor is currently
- worked with. */
- while (runp != NULL
- && runp->aiocbp->aiocb.aio_fildes < aiocbp->aiocb.aio_fildes)
- {
- last = runp;
- runp = runp->next_fd;
- }
-
- /* Get a new element for the waiting list. */
- newp = get_elem ();
- if (newp == NULL)
- {
- pthread_mutex_unlock (&__aio_requests_mutex);
- __set_errno (EAGAIN);
- 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;
- aiocbp->aiocb.__policy = policy;
- aiocbp->aiocb.aio_lio_opcode = operation;
- aiocbp->aiocb.__error_code = EINPROGRESS;
- aiocbp->aiocb.__return_value = 0;
-
- if (runp != NULL
- && runp->aiocbp->aiocb.aio_fildes == aiocbp->aiocb.aio_fildes)
- {
- /* The current file descriptor is worked on. It makes no sense
- to start another thread since this new thread would fight
- with the running thread for the resources. But we also cannot
- say that the thread processing this desriptor shall immediately
- after finishing the current job process this request if there
- are other threads in the running queue which have a higher
- priority. */
-
- /* Simply enqueue it after the running one according to the
- priority. */
- while (runp->next_prio != NULL
- && runp->next_prio->aiocbp->aiocb.__abs_prio >= prio)
- runp = runp->next_prio;
-
- newp->next_prio = runp->next_prio;
- runp->next_prio = newp;
-
- running = queued;
- }
- else
- {
- running = yes;
- /* Enqueue this request for a new descriptor. */
- if (last == NULL)
- {
- newp->last_fd = NULL;
- newp->next_fd = requests;
- if (requests != NULL)
- requests->last_fd = newp;
- requests = newp;
- }
- else
- {
- newp->next_fd = last->next_fd;
- newp->last_fd = last;
- last->next_fd = newp;
- if (newp->next_fd != NULL)
- newp->next_fd->last_fd = newp;
- }
-
- newp->next_prio = NULL;
- }
-
- if (running == yes)
- {
- /* We try to create a new thread for this file descriptor. The
- function which gets called will handle all available requests
- for this descriptor and when all are processed it will
- terminate.
-
- If no new thread can be created or if the specified limit of
- threads for AIO is reached we queue the request. */
-
- /* See if we need to and are able to create a thread. */
- if (nthreads < optim.aio_threads && idle_thread_count == 0)
- {
- pthread_t thid;
- pthread_attr_t attr;
-
- /* Make sure the thread is created detached. */
- pthread_attr_init (&attr);
- pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
-
- running = newp->running = allocated;
-
- /* Now try to start a thread. */
- if (pthread_create (&thid, &attr, handle_fildes_io, newp) == 0)
- /* We managed to enqueue the request. All errors which can
- happen now can be recognized by calls to `aio_return' and
- `aio_error'. */
- ++nthreads;
- else
- {
- /* Reset the running flag. The new request is not running. */
- running = newp->running = yes;
-
- if (nthreads == 0)
- /* We cannot create a thread in the moment and there is
- also no thread running. This is a problem. `errno' is
- set to EAGAIN if this is only a temporary problem. */
- result = -1;
- }
- }
- }
-
- /* Enqueue the request in the run queue if it is not yet running. */
- if (running == yes && result == 0)
- {
- add_request_to_runlist (newp);
-
- /* If there is a thread waiting for work, then let it know that we
- have just given it something to do. */
- if (idle_thread_count > 0)
- pthread_cond_signal (&__aio_new_request_notification);
- }
-
- if (result == 0)
- newp->running = running;
- else
- {
- /* Something went wrong. */
- __aio_free_request (newp);
- newp = NULL;
- }
-
- /* Release the mutex. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-
- return newp;
-}
-
-
-static void *
-__attribute__ ((noreturn))
-handle_fildes_io (void *arg)
-{
- pthread_t self = pthread_self ();
- struct sched_param param;
- struct requestlist *runp = (struct requestlist *) arg;
- aiocb_union *aiocbp;
- int policy;
- int fildes;
-
- pthread_getschedparam (self, &policy, &param);
-
- do
- {
- /* If runp is NULL, then we were created to service the work queue
- in general, not to handle any particular request. In that case we
- skip the "do work" stuff on the first pass, and go directly to the
- "get work off the work queue" part of this loop, which is near the
- end. */
- if (runp == NULL)
- pthread_mutex_lock (&__aio_requests_mutex);
- else
- {
- /* Hopefully this request is marked as running. */
- assert (runp->running == allocated);
-
- /* Update our variables. */
- aiocbp = runp->aiocbp;
- fildes = aiocbp->aiocb.aio_fildes;
-
- /* Change the priority to the requested value (if necessary). */
- if (aiocbp->aiocb.__abs_prio != param.sched_priority
- || aiocbp->aiocb.__policy != policy)
- {
- param.sched_priority = aiocbp->aiocb.__abs_prio;
- policy = aiocbp->aiocb.__policy;
- pthread_setschedparam (self, policy, &param);
- }
-
- /* Process request pointed to by RUNP. We must not be disturbed
- by signals. */
- if ((aiocbp->aiocb.aio_lio_opcode & 127) == LIO_READ)
- {
- if (aiocbp->aiocb.aio_lio_opcode & 128)
- aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (__pread64 (fildes, (void *)
- aiocbp->aiocb64.aio_buf,
- aiocbp->aiocb64.aio_nbytes,
- aiocbp->aiocb64.aio_offset));
- else
- aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (pread (fildes,
- (void *) aiocbp->aiocb.aio_buf,
- aiocbp->aiocb.aio_nbytes,
- aiocbp->aiocb.aio_offset));
-
- if (aiocbp->aiocb.__return_value == -1 && errno == ESPIPE)
- /* The Linux kernel is different from others. It returns
- ESPIPE if using pread on a socket. Other platforms
- simply ignore the offset parameter and behave like
- read. */
- aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (read (fildes,
- (void *) aiocbp->aiocb64.aio_buf,
- aiocbp->aiocb64.aio_nbytes));
- }
- else if ((aiocbp->aiocb.aio_lio_opcode & 127) == LIO_WRITE)
- {
- if (aiocbp->aiocb.aio_lio_opcode & 128)
- aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (__pwrite64 (fildes, (const void *)
- aiocbp->aiocb64.aio_buf,
- aiocbp->aiocb64.aio_nbytes,
- aiocbp->aiocb64.aio_offset));
- else
- aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (pwrite (fildes, (const void *)
- aiocbp->aiocb.aio_buf,
- aiocbp->aiocb.aio_nbytes,
- aiocbp->aiocb.aio_offset));
-
- if (aiocbp->aiocb.__return_value == -1 && errno == ESPIPE)
- /* The Linux kernel is different from others. It returns
- ESPIPE if using pwrite on a socket. Other platforms
- simply ignore the offset parameter and behave like
- write. */
- aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (write (fildes,
- (void *) aiocbp->aiocb64.aio_buf,
- aiocbp->aiocb64.aio_nbytes));
- }
- else if (aiocbp->aiocb.aio_lio_opcode == LIO_DSYNC)
- aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (fdatasync (fildes));
- else if (aiocbp->aiocb.aio_lio_opcode == LIO_SYNC)
- aiocbp->aiocb.__return_value =
- TEMP_FAILURE_RETRY (fsync (fildes));
- else
- {
- /* This is an invalid opcode. */
- aiocbp->aiocb.__return_value = -1;
- __set_errno (EINVAL);
- }
-
- /* Get the mutex. */
- pthread_mutex_lock (&__aio_requests_mutex);
-
- /* In theory we would need here a write memory barrier since the
- callers test using aio_error() whether the request finished
- and once this value != EINPROGRESS the field __return_value
- must be committed to memory.
-
- But since the pthread_mutex_lock call involves write memory
- barriers as well it is not necessary. */
-
- if (aiocbp->aiocb.__return_value == -1)
- aiocbp->aiocb.__error_code = errno;
- else
- aiocbp->aiocb.__error_code = 0;
-
- /* Send the signal to notify about finished processing of the
- request. */
- __aio_notify (runp);
-
- /* For debugging purposes we reset the running flag of the
- finished request. */
- assert (runp->running == allocated);
- runp->running = done;
-
- /* Now dequeue the current request. */
- __aio_remove_request (NULL, runp, 0);
- if (runp->next_prio != NULL)
- add_request_to_runlist (runp->next_prio);
-
- /* Free the old element. */
- __aio_free_request (runp);
- }
-
- runp = runlist;
-
- /* If the runlist is empty, then we sleep for a while, waiting for
- something to arrive in it. */
- if (runp == NULL && optim.aio_idle_time >= 0)
- {
- struct timeval now;
- struct timespec wakeup_time;
-
- ++idle_thread_count;
- gettimeofday (&now, NULL);
- wakeup_time.tv_sec = now.tv_sec + optim.aio_idle_time;
- wakeup_time.tv_nsec = now.tv_usec * 1000;
- if (wakeup_time.tv_nsec > 1000000000)
- {
- wakeup_time.tv_nsec -= 1000000000;
- ++wakeup_time.tv_sec;
- }
- pthread_cond_timedwait (&__aio_new_request_notification,
- &__aio_requests_mutex,
- &wakeup_time);
- --idle_thread_count;
- runp = runlist;
- }
-
- if (runp == NULL)
- --nthreads;
- else
- {
- assert (runp->running == yes);
- runp->running = allocated;
- runlist = runp->next_run;
-
- /* If we have a request to process, and there's still another in
- the run list, then we need to either wake up or create a new
- thread to service the request that is still in the run list. */
- if (runlist != NULL)
- {
- /* There are at least two items in the work queue to work on.
- If there are other idle threads, then we should wake them
- up for these other work elements; otherwise, we should try
- to create a new thread. */
- if (idle_thread_count > 0)
- pthread_cond_signal (&__aio_new_request_notification);
- else if (nthreads < optim.aio_threads)
- {
- pthread_t thid;
- pthread_attr_t attr;
-
- /* Make sure the thread is created detached. */
- pthread_attr_init (&attr);
- pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
-
- /* Now try to start a thread. If we fail, no big deal,
- because we know that there is at least one thread (us)
- that is working on AIO operations. */
- if (pthread_create (&thid, &attr, handle_fildes_io, NULL)
- == 0)
- ++nthreads;
- }
- }
- }
-
- /* Release the mutex. */
- pthread_mutex_unlock (&__aio_requests_mutex);
- }
- while (runp != NULL);
-
- pthread_exit (NULL);
-}
-
-
-/* Free allocated resources. */
-static void
-__attribute__ ((unused))
-free_res (void)
-{
- size_t row;
-
- for (row = 0; row < pool_max_size; ++row)
- free (pool[row]);
-
- free (pool);
-}
-text_set_element (__libc_subfreeres, free_res);
-
-
-/* Add newrequest to the runlist. The __abs_prio flag of newrequest must
- be correctly set to do this. Also, you had better set newrequest's
- "running" flag to "yes" before you release your lock or you'll throw an
- assertion. */
-static void
-add_request_to_runlist (struct requestlist *newrequest)
-{
- int prio = newrequest->aiocbp->aiocb.__abs_prio;
- struct requestlist *runp;
-
- if (runlist == NULL || runlist->aiocbp->aiocb.__abs_prio < prio)
- {
- newrequest->next_run = runlist;
- runlist = newrequest;
- }
- else
- {
- runp = runlist;
-
- while (runp->next_run != NULL
- && runp->next_run->aiocbp->aiocb.__abs_prio >= prio)
- runp = runp->next_run;
-
- newrequest->next_run = runp->next_run;
- runp->next_run = newrequest;
- }
-}
diff --git a/rt/aio_misc.h b/rt/aio_misc.h
deleted file mode 100644
index 372b555..0000000
--- a/rt/aio_misc.h
+++ /dev/null
@@ -1,127 +0,0 @@
-/* Copyright (C) 1997, 1999, 2000 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
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#ifndef _AIO_MISC_H
-#define _AIO_MISC_H 1
-
-#include <aio.h>
-#include <pthread.h>
-
-
-/* Extend the operation enum. */
-enum
-{
- LIO_DSYNC = LIO_READ + 1,
- LIO_SYNC,
- LIO_READ64 = LIO_READ | 128,
- LIO_WRITE64 = LIO_WRITE | 128
-};
-
-
-/* Union of the two request types. */
-typedef union
- {
- struct aiocb aiocb;
- struct aiocb64 aiocb64;
- } aiocb_union;
-
-
-/* Used to synchronize. */
-struct waitlist
- {
- struct waitlist *next;
-
- pthread_cond_t *cond;
- 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;
- };
-
-
-/* Status of a request. */
-enum
-{
- no,
- queued,
- yes,
- allocated,
- done
-};
-
-
-/* Used to queue requests.. */
-struct requestlist
- {
- int running;
-
- struct requestlist *last_fd;
- struct requestlist *next_fd;
- struct requestlist *next_prio;
- struct requestlist *next_run;
-
- /* 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;
- };
-
-
-/* Lock for global I/O list of requests. */
-extern pthread_mutex_t __aio_requests_mutex;
-
-
-/* Enqueue request. */
-extern struct requestlist *__aio_enqueue_request (aiocb_union *aiocbp,
- int operation)
- internal_function;
-
-/* Find request entry for given AIO control block. */
-extern struct requestlist *__aio_find_req (aiocb_union *elem)
- internal_function;
-
-/* Find request entry for given file descriptor. */
-extern struct requestlist *__aio_find_req_fd (int fildes) internal_function;
-
-/* Remove request from the list. */
-extern void __aio_remove_request (struct requestlist *last,
- struct requestlist *req, int all)
- internal_function;
-
-/* Release the entry for the request. */
-extern void __aio_free_request (struct requestlist *req) internal_function;
-
-/* Notify initiator of request and tell this everybody listening. */
-extern void __aio_notify (struct requestlist *req) internal_function;
-
-/* Notify initiator of request. */
-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, pid_t caller_pid)
- internal_function;
-
-#endif /* aio_misc.h */
diff --git a/rt/aio_notify.c b/rt/aio_notify.c
deleted file mode 100644
index 9b17750..0000000
--- a/rt/aio_notify.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/* Notify initiator of AIO request.
- Copyright (C) 1997,98,99,2000,01 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <errno.h>
-#include <pthread.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include "aio_misc.h"
-
-
-static void *
-notify_func_wrapper (void *arg)
-{
- struct sigevent *sigev = arg;
- sigev->sigev_notify_function (sigev->sigev_value);
- return NULL;
-}
-
-
-int
-internal_function
-__aio_notify_only (struct sigevent *sigev, pid_t caller_pid)
-{
- int result = 0;
-
- /* Send the signal to notify about finished processing of the request. */
- if (sigev->sigev_notify == SIGEV_THREAD)
- {
- /* We have to start a thread. */
- pthread_t tid;
- pthread_attr_t attr, *pattr;
-
- pattr = (pthread_attr_t *) sigev->sigev_notify_attributes;
- if (pattr == NULL)
- {
- pthread_attr_init (&attr);
- pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
- pattr = &attr;
- }
-
- if (pthread_create (&tid, pattr, notify_func_wrapper, sigev) < 0)
- result = -1;
- }
- else if (sigev->sigev_notify == SIGEV_SIGNAL)
- {
- /* We have to send a signal. */
-#if _POSIX_REALTIME_SIGNALS
- /* Note that the standard gives us the option of using a plain
- non-queuing signal here when SA_SIGINFO is not set for the signal. */
- if (__aio_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid)
- < 0)
- result = -1;
-#else
- /* There are no queued signals on this system at all. */
- result = raise (sigev->sigev_signo);
-#endif
- }
-
- return result;
-}
-
-
-void
-internal_function
-__aio_notify (struct requestlist *req)
-{
- struct waitlist *waitlist;
- struct aiocb *aiocbp = &req->aiocbp->aiocb;
-
- 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? */
- aiocbp->__error_code = errno;
- aiocbp->__return_value = -1;
- }
-
- /* Now also notify possibly waiting threads. */
- waitlist = req->waiting;
- while (waitlist != NULL)
- {
- 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);
- else
- /* This is part of a asynchronous `lio_listio' operation. If
- this request is the last one, send the signal. */
- if (*waitlist->counterp == 0)
- {
- __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);
- }
-
- waitlist = next;
- }
-}
diff --git a/rt/aio_read.c b/rt/aio_read.c
deleted file mode 100644
index 4b5d404..0000000
--- a/rt/aio_read.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Asynchronous read.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <aio.h>
-
-#include "aio_misc.h"
-
-
-int
-aio_read (aiocbp)
- struct aiocb *aiocbp;
-{
- return (__aio_enqueue_request ((aiocb_union *) aiocbp, LIO_READ) == NULL
- ? -1 : 0);
-}
diff --git a/rt/aio_read64.c b/rt/aio_read64.c
deleted file mode 100644
index 0006ad6..0000000
--- a/rt/aio_read64.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Asynchronous read, 64bit offset version.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <aio.h>
-
-#include "aio_misc.h"
-
-
-int
-aio_read64 (aiocbp)
- struct aiocb64 *aiocbp;
-{
- return (__aio_enqueue_request ((aiocb_union *) aiocbp, LIO_READ64) == NULL
- ? -1 : 0);
-}
diff --git a/rt/aio_suspend.c b/rt/aio_suspend.c
deleted file mode 100644
index 5ac2d23..0000000
--- a/rt/aio_suspend.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/* Suspend until termination of a requests.
- Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-
-/* We use an UGLY hack to prevent gcc from finding us cheating. The
- implementations of aio_suspend and aio_suspend64 are identical and so
- we want to avoid code duplication by using aliases. But gcc sees
- the different parameter lists and prints a warning. We define here
- a function so that aio_suspend64 has no prototype. */
-#define aio_suspend64 XXX
-#include <aio.h>
-/* And undo the hack. */
-#undef aio_suspend64
-
-#include <errno.h>
-#include <stdlib.h>
-#include <sys/time.h>
-
-#include "aio_misc.h"
-
-
-int
-aio_suspend (list, nent, timeout)
- const struct aiocb *const list[];
- int nent;
- const struct timespec *timeout;
-{
- struct waitlist waitlist[nent];
- struct requestlist *requestlist[nent];
- pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
- int cnt;
- int result = 0;
- int dummy;
- int none = 1;
-
- /* Request the mutex. */
- pthread_mutex_lock (&__aio_requests_mutex);
-
- /* There is not yet a finished request. Signal the request that
- we are working for it. */
- for (cnt = 0; cnt < nent; ++cnt)
- if (list[cnt] != NULL && list[cnt]->__error_code == EINPROGRESS)
- {
- requestlist[cnt] = __aio_find_req ((aiocb_union *) list[cnt]);
-
- if (requestlist[cnt] != NULL)
- {
- waitlist[cnt].cond = &cond;
- 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;
- }
- }
-
- /* If there is a not finished request wait for it. */
- if (!none)
- {
- int oldstate;
-
- /* 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);
-
- if (timeout == NULL)
- result = pthread_cond_wait (&cond, &__aio_requests_mutex);
- else
- {
- /* We have to convert the relative timeout value into an
- absolute time value with pthread_cond_timedwait expects. */
- struct timeval now;
- struct timespec abstime;
-
- __gettimeofday (&now, NULL);
- abstime.tv_nsec = timeout->tv_nsec + now.tv_usec * 1000;
- abstime.tv_sec = timeout->tv_sec + now.tv_sec;
- if (abstime.tv_nsec >= 1000000000)
- {
- abstime.tv_nsec -= 1000000000;
- abstime.tv_sec += 1;
- }
-
- result = pthread_cond_timedwait (&cond, &__aio_requests_mutex,
- &abstime);
- }
-
- /* Now remove the entry in the waiting list for all requests
- which didn't terminate. */
- for (cnt = 0; cnt < nent; ++cnt)
- if (list[cnt] != NULL && list[cnt]->__error_code == EINPROGRESS
- && requestlist[cnt] != NULL)
- {
- struct waitlist **listp = &requestlist[cnt]->waiting;
-
- /* There is the chance that we cannot find our entry anymore.
- This could happen if the request terminated and restarted
- again. */
- while (*listp != NULL && *listp != &waitlist[cnt])
- listp = &(*listp)->next;
-
- if (*listp != NULL)
- *listp = (*listp)->next;
- }
-
- /* 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 ();
-
- if (result != 0)
- {
- /* An error occurred. Possibly it's EINTR. 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);
-
- result = -1;
- }
- }
-
- /* Release the mutex. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-
- return result;
-}
-
-weak_alias (aio_suspend, aio_suspend64)
diff --git a/rt/aio_write.c b/rt/aio_write.c
deleted file mode 100644
index 77ad0a6..0000000
--- a/rt/aio_write.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Asynchronous write.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <aio.h>
-
-#include "aio_misc.h"
-
-
-int
-aio_write (aiocbp)
- struct aiocb *aiocbp;
-{
- return (__aio_enqueue_request ((aiocb_union *) aiocbp, LIO_WRITE) == NULL
- ? -1 : 0);
-}
diff --git a/rt/aio_write64.c b/rt/aio_write64.c
deleted file mode 100644
index bc95e50..0000000
--- a/rt/aio_write64.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Asynchronous write, 64bit offset version.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <aio.h>
-
-#include "aio_misc.h"
-
-
-int
-aio_write64 (aiocbp)
- struct aiocb64 *aiocbp;
-{
- return (__aio_enqueue_request ((aiocb_union *) aiocbp, LIO_WRITE64) == NULL
- ? -1 : 0);
-}
diff --git a/rt/lio_listio.c b/rt/lio_listio.c
deleted file mode 100644
index e1df603..0000000
--- a/rt/lio_listio.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/* Enqueue and list of read or write requests.
- Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 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_listio (mode, list, nent, sig)
- int mode;
- struct aiocb *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)
- {
- list[cnt]->aio_sigevent.sigev_notify = SIGEV_NONE;
- requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
- list[cnt]->aio_lio_opcode);
-
- 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;
- }
- else
- requests[cnt] = NULL;
-
- 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)
- {
- assert (requests[cnt] == NULL || list[cnt] != NULL);
-
- if (requests[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
- 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)
- {
- assert (requests[cnt] == NULL || list[cnt] != NULL);
-
- if (requests[cnt] != NULL
- && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
- 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;
-}
diff --git a/rt/lio_listio64.c b/rt/lio_listio64.c
deleted file mode 100644
index 5df2596..0000000
--- a/rt/lio_listio64.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/* Enqueue and list of read or write requests, 64bit offset version.
- 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.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <aio.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 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;
- }
-
- /* 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;
-}