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authorTorvald Riegel <triegel@redhat.com>2014-12-08 18:30:33 +0100
committerDavid Holsgrove <david.holsgrove@xilinx.com>2015-01-09 14:56:33 +1000
commite1cfbd0c376853f8720508e92b8fd0322bc64a6a (patch)
treededb7f59c71b2f29284ea06e50c56ca96336404e /sysdeps/unix/sysv/linux/microblaze
parentcf71e44f1b127335da33d3845f21b62fa17c3108 (diff)
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MicroBlaze: Remove custom pthread_once implementation on microblaze.
2015-01-06 Torvald Riegel <triegel@redhat.com> * sysdeps/unix/sysv/linux/microblaze/pthread_once.c: Delete file. Signed-off-by: Torvald Riegel <triegel@redhat.com> Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/microblaze')
-rw-r--r--sysdeps/unix/sysv/linux/microblaze/pthread_once.c89
1 files changed, 0 insertions, 89 deletions
diff --git a/sysdeps/unix/sysv/linux/microblaze/pthread_once.c b/sysdeps/unix/sysv/linux/microblaze/pthread_once.c
deleted file mode 100644
index 92da510942..0000000000
--- a/sysdeps/unix/sysv/linux/microblaze/pthread_once.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/* Copyright (C) 2004-2015 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/>. */
-
-#include "pthreadP.h"
-#include <lowlevellock.h>
-
-unsigned long int __fork_generation attribute_hidden;
-
-static void
-clear_once_control (void *arg)
-{
- pthread_once_t *once_control = (pthread_once_t *) arg;
-
- *once_control = 0;
- lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE);
-}
-
-int
-__pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
-{
- for (;;)
- {
- int oldval;
- int newval;
-
- /* Pseudo code:
- newval = __fork_generation | 1;
- oldval = *once_control;
- if ((oldval & 2) == 0)
- *once_control = newval;
- Do this atomically. */
- do
- {
- newval = __fork_generation | 1;
- oldval = *once_control;
- if (oldval & 2)
- break;
- } while (atomic_compare_and_exchange_val_acq (once_control, newval, oldval) != oldval);
-
- /* Check if the initializer has already been done. */
- if ((oldval & 2) != 0)
- return 0;
-
- /* Check if another thread already runs the initializer. */
- if ((oldval & 1) == 0)
- break;
-
- /* Check whether the initializer execution was interrupted by a fork. */
- if (oldval != newval)
- break;
-
- /* Same generation, some other thread was faster. Wait. */
- lll_futex_wait (once_control, oldval, LLL_PRIVATE);
- }
-
- /* This thread is the first here. Do the initialization.
- Register a cleanup handler so that in case the thread gets
- interrupted the initialization can be restarted. */
- pthread_cleanup_push (clear_once_control, once_control);
-
- init_routine ();
-
- pthread_cleanup_pop (0);
-
- /* Say that the initialisation is done. */
- *once_control = __fork_generation | 2;
-
- /* Wake up all other threads. */
- lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE);
-
- return 0;
-}
-weak_alias (__pthread_once, pthread_once)
-hidden_def (__pthread_once)