Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 143 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/pthread/aio_misc.h b/REORG.TODO/sysdeps/pthread/aio_misc.h
new file mode 100644
index 0000000000..3315d82400
--- /dev/null
+++ b/REORG.TODO/sysdeps/pthread/aio_misc.h
@@ -0,0 +1,143 @@
+/* Copyright (C) 1997-2017 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _AIO_MISC_H
+#define _AIO_MISC_H	1
+
+#include <aio.h>
+#include <pthread.h>
+
+
+/* Extend the operation enum.  */
+enum
+{
+  LIO_DSYNC = LIO_NOP + 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;
+
+    /* 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 unsigned int *counterp;
+    /* The next field is used in asynchronous `lio_listio' operations.  */
+    struct sigevent *sigevp;
+#ifdef BROKEN_THREAD_SIGNALS
+    /* XXX See requestlist, it's used to work around the broken signal
+       handling in Linux.  */
+    pid_t caller_pid;
+#endif
+  };
+
+
+/* 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;
+
+#ifdef BROKEN_THREAD_SIGNALS
+    /* PID of the initiator thread.
+       XXX This is only necessary for the broken signal handling on Linux.  */
+    pid_t caller_pid;
+#endif
+
+    /* List of waiting processes.  */
+    struct waitlist *waiting;
+  };
+
+
+/* Lock for global I/O list of requests.  */
+extern pthread_mutex_t __aio_requests_mutex attribute_hidden;
+
+
+/* Enqueue request.  */
+extern struct requestlist *__aio_enqueue_request (aiocb_union *aiocbp,
+						  int operation)
+     attribute_hidden internal_function;
+
+/* Find request entry for given AIO control block.  */
+extern struct requestlist *__aio_find_req (aiocb_union *elem)
+     attribute_hidden internal_function;
+
+/* Find request entry for given file descriptor.  */
+extern struct requestlist *__aio_find_req_fd (int fildes)
+     attribute_hidden internal_function;
+
+/* Remove request from the list.  */
+extern void __aio_remove_request (struct requestlist *last,
+				  struct requestlist *req, int all)
+     attribute_hidden internal_function;
+
+/* Release the entry for the request.  */
+extern void __aio_free_request (struct requestlist *req)
+     attribute_hidden internal_function;
+
+/* Notify initiator of request and tell this everybody listening.  */
+extern void __aio_notify (struct requestlist *req)
+     attribute_hidden internal_function;
+
+/* Notify initiator of request.  */
+#ifdef BROKEN_THREAD_SIGNALS
+extern int __aio_notify_only (struct sigevent *sigev, pid_t caller_pid)
+     attribute_hidden internal_function;
+#else
+extern int __aio_notify_only (struct sigevent *sigev)
+     attribute_hidden internal_function;
+#endif
+
+/* Send the signal.  */
+extern int __aio_sigqueue (int sig, const union sigval val, pid_t caller_pid)
+     attribute_hidden internal_function;
+
+#endif /* aio_misc.h */