summaryrefslogtreecommitdiffstats
path: root/media/ffvpx/libavutil/atomic.c
diff options
context:
space:
mode:
Diffstat (limited to 'media/ffvpx/libavutil/atomic.c')
-rw-r--r--media/ffvpx/libavutil/atomic.c109
1 files changed, 0 insertions, 109 deletions
diff --git a/media/ffvpx/libavutil/atomic.c b/media/ffvpx/libavutil/atomic.c
deleted file mode 100644
index 64cff2576..000000000
--- a/media/ffvpx/libavutil/atomic.c
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg 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.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "config.h"
-#include "atomic.h"
-
-#if !HAVE_ATOMICS_NATIVE
-
-#if HAVE_PTHREADS
-
-#include <pthread.h>
-
-static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER;
-
-int avpriv_atomic_int_get(volatile int *ptr)
-{
- int res;
-
- pthread_mutex_lock(&atomic_lock);
- res = *ptr;
- pthread_mutex_unlock(&atomic_lock);
-
- return res;
-}
-
-void avpriv_atomic_int_set(volatile int *ptr, int val)
-{
- pthread_mutex_lock(&atomic_lock);
- *ptr = val;
- pthread_mutex_unlock(&atomic_lock);
-}
-
-int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc)
-{
- int res;
-
- pthread_mutex_lock(&atomic_lock);
- *ptr += inc;
- res = *ptr;
- pthread_mutex_unlock(&atomic_lock);
-
- return res;
-}
-
-void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval)
-{
- void *ret;
- pthread_mutex_lock(&atomic_lock);
- ret = *ptr;
- if (ret == oldval)
- *ptr = newval;
- pthread_mutex_unlock(&atomic_lock);
- return ret;
-}
-
-#elif !HAVE_THREADS
-
-int avpriv_atomic_int_get(volatile int *ptr)
-{
- return *ptr;
-}
-
-void avpriv_atomic_int_set(volatile int *ptr, int val)
-{
- *ptr = val;
-}
-
-int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc)
-{
- *ptr += inc;
- return *ptr;
-}
-
-void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval)
-{
- if (*ptr == oldval) {
- *ptr = newval;
- return oldval;
- }
- return *ptr;
-}
-
-#else /* HAVE_THREADS */
-
-/* This should never trigger, unless a new threading implementation
- * without correct atomics dependencies in configure or a corresponding
- * atomics implementation is added. */
-#error "Threading is enabled, but there is no implementation of atomic operations available"
-
-#endif /* HAVE_PTHREADS */
-
-#endif /* !HAVE_ATOMICS_NATIVE */