1 files changed, 127 insertions, 0 deletions
diff --git a/sysdeps/pthread/aio_misc.h b/sysdeps/pthread/aio_misc.h
new file mode 100644
index 0000000000..372b5556ca
--- /dev/null
+++ b/sysdeps/pthread/aio_misc.h
@@ -0,0 +1,127 @@
+/* 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 */