It has been replaced by C11 stdatomic.h and is now unused.

(cherry picked from commit 5cc0057f4910c8c72421b812c8f337ef6c43696c)
Signed-off-by: James Almer <jamrial@gmail.com>

7 files changed, 0 insertions, 401 deletions

diff --git a/libavutil/Makefile b/libavutil/Makefile
index 66b894d66e..d7474f59e4 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -155,8 +155,6 @@ OBJS = adler32.o                                                        \
        xtea.o                                                           \
        tea.o                                                            \
 
-OBJS-$(!HAVE_ATOMICS_NATIVE)            += atomic.o                     \
-
 OBJS-$(CONFIG_CUDA)                     += hwcontext_cuda.o
 OBJS-$(CONFIG_D3D11VA)                  += hwcontext_d3d11va.o
 OBJS-$(CONFIG_DXVA2)                    += hwcontext_dxva2.o
@@ -183,14 +181,10 @@ SKIPHEADERS-$(CONFIG_OPENCL)           += hwcontext_opencl.h
 SKIPHEADERS-$(CONFIG_VAAPI)            += hwcontext_vaapi.h
 SKIPHEADERS-$(CONFIG_VIDEOTOOLBOX)     += hwcontext_videotoolbox.h
 SKIPHEADERS-$(CONFIG_VDPAU)            += hwcontext_vdpau.h
-SKIPHEADERS-$(HAVE_ATOMICS_GCC)        += atomic_gcc.h
-SKIPHEADERS-$(HAVE_ATOMICS_SUNCC)      += atomic_suncc.h
-SKIPHEADERS-$(HAVE_ATOMICS_WIN32)      += atomic_win32.h
 
 TESTPROGS = adler32                                                     \
             aes                                                         \
             aes_ctr                                                     \
-            atomic                                                      \
             audio_fifo                                                  \
             avstring                                                    \
             base64                                                      \
diff --git a/libavutil/atomic.c b/libavutil/atomic.c
deleted file mode 100644
index 64cff2576f..0000000000
--- a/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 */
diff --git a/libavutil/atomic.h b/libavutil/atomic.h
deleted file mode 100644
index 15906d24c9..0000000000
--- a/libavutil/atomic.h
+++ /dev/null
@@ -1,79 +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
- */
-
-#ifndef AVUTIL_ATOMIC_H
-#define AVUTIL_ATOMIC_H
-
-#include "config.h"
-
-#if HAVE_ATOMICS_NATIVE
-
-#if HAVE_ATOMICS_GCC
-#include "atomic_gcc.h"
-#elif HAVE_ATOMICS_WIN32
-#include "atomic_win32.h"
-#elif HAVE_ATOMICS_SUNCC
-#include "atomic_suncc.h"
-#endif
-
-#else
-
-/**
- * Load the current value stored in an atomic integer.
- *
- * @param ptr atomic integer
- * @return the current value of the atomic integer
- * @note This acts as a memory barrier.
- */
-int avpriv_atomic_int_get(volatile int *ptr);
-
-/**
- * Store a new value in an atomic integer.
- *
- * @param ptr atomic integer
- * @param val the value to store in the atomic integer
- * @note This acts as a memory barrier.
- */
-void avpriv_atomic_int_set(volatile int *ptr, int val);
-
-/**
- * Add a value to an atomic integer.
- *
- * @param ptr atomic integer
- * @param inc the value to add to the atomic integer (may be negative)
- * @return the new value of the atomic integer.
- * @note This does NOT act as a memory barrier. This is primarily
- *       intended for reference counting.
- */
-int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc);
-
-/**
- * Atomic pointer compare and swap.
- *
- * @param ptr pointer to the pointer to operate on
- * @param oldval do the swap if the current value of *ptr equals to oldval
- * @param newval value to replace *ptr with
- * @return the value of *ptr before comparison
- */
-void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval);
-
-#endif /* HAVE_ATOMICS_NATIVE */
-
-#endif /* AVUTIL_ATOMIC_H */
diff --git a/libavutil/atomic_gcc.h b/libavutil/atomic_gcc.h
deleted file mode 100644
index 2bb43c3cea..0000000000
--- a/libavutil/atomic_gcc.h
+++ /dev/null
@@ -1,61 +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
- */
-
-#ifndef AVUTIL_ATOMIC_GCC_H
-#define AVUTIL_ATOMIC_GCC_H
-
-#include <stdint.h>
-
-#include "atomic.h"
-
-#define avpriv_atomic_int_get atomic_int_get_gcc
-static inline int atomic_int_get_gcc(volatile int *ptr)
-{
-    __sync_synchronize();
-    return *ptr;
-}
-
-#define avpriv_atomic_int_set atomic_int_set_gcc
-static inline void atomic_int_set_gcc(volatile int *ptr, int val)
-{
-    *ptr = val;
-    __sync_synchronize();
-}
-
-#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc
-static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc)
-{
-    return __sync_add_and_fetch(ptr, inc);
-}
-
-#define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc
-static inline void *atomic_ptr_cas_gcc(void * volatile *ptr,
-                                       void *oldval, void *newval)
-{
-#ifdef __ARMCC_VERSION
-    // armcc will throw an error if ptr is not an integer type
-    volatile uintptr_t *tmp = (volatile uintptr_t*)ptr;
-    return (void*)__sync_val_compare_and_swap(tmp, oldval, newval);
-#else
-    return __sync_val_compare_and_swap(ptr, oldval, newval);
-#endif
-}
-
-#endif /* AVUTIL_ATOMIC_GCC_H */
diff --git a/libavutil/atomic_suncc.h b/libavutil/atomic_suncc.h
deleted file mode 100644
index a75a37b47e..0000000000
--- a/libavutil/atomic_suncc.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * 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
- */
-
-#ifndef AVUTIL_ATOMIC_SUNCC_H
-#define AVUTIL_ATOMIC_SUNCC_H
-
-#include <atomic.h>
-#include <mbarrier.h>
-
-#include "atomic.h"
-
-#define avpriv_atomic_int_get atomic_int_get_suncc
-static inline int atomic_int_get_suncc(volatile int *ptr)
-{
-    __machine_rw_barrier();
-    return *ptr;
-}
-
-#define avpriv_atomic_int_set atomic_int_set_suncc
-static inline void atomic_int_set_suncc(volatile int *ptr, int val)
-{
-    *ptr = val;
-    __machine_rw_barrier();
-}
-
-#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_suncc
-static inline int atomic_int_add_and_fetch_suncc(volatile int *ptr, int inc)
-{
-    return atomic_add_int_nv(ptr, inc);
-}
-
-#define avpriv_atomic_ptr_cas atomic_ptr_cas_suncc
-static inline void *atomic_ptr_cas_suncc(void * volatile *ptr,
-                                         void *oldval, void *newval)
-{
-    return atomic_cas_ptr(ptr, oldval, newval);
-}
-
-#endif /* AVUTIL_ATOMIC_SUNCC_H */
diff --git a/libavutil/atomic_win32.h b/libavutil/atomic_win32.h
deleted file mode 100644
index f7299336f6..0000000000
--- a/libavutil/atomic_win32.h
+++ /dev/null
@@ -1,54 +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
- */
-
-#ifndef AVUTIL_ATOMIC_WIN32_H
-#define AVUTIL_ATOMIC_WIN32_H
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-
-#define avpriv_atomic_int_get atomic_int_get_win32
-static inline int atomic_int_get_win32(volatile int *ptr)
-{
-    MemoryBarrier();
-    return *ptr;
-}
-
-#define avpriv_atomic_int_set atomic_int_set_win32
-static inline void atomic_int_set_win32(volatile int *ptr, int val)
-{
-    *ptr = val;
-    MemoryBarrier();
-}
-
-#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_win32
-static inline int atomic_int_add_and_fetch_win32(volatile int *ptr, int inc)
-{
-    return inc + InterlockedExchangeAdd(ptr, inc);
-}
-
-#define avpriv_atomic_ptr_cas atomic_ptr_cas_win32
-static inline void *atomic_ptr_cas_win32(void * volatile *ptr,
-                                         void *oldval, void *newval)
-{
-    return InterlockedCompareExchangePointer(ptr, newval, oldval);
-}
-
-#endif /* AVUTIL_ATOMIC_WIN32_H */
diff --git a/libavutil/tests/atomic.c b/libavutil/tests/atomic.c
deleted file mode 100644
index e41bf5a2b9..0000000000
--- a/libavutil/tests/atomic.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * 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 "libavutil/atomic.h"
-#include "libavutil/avassert.h"
-
-int main(void)
-{
-    volatile int val      = 1;
-    void *tmp1            = (int *)&val;
-    void * volatile *tmp2 = &tmp1;
-    int res;
-
-    res = avpriv_atomic_int_add_and_fetch(&val, 1);
-    av_assert0(res == 2);
-    avpriv_atomic_int_set(&val, 3);
-    res = avpriv_atomic_int_get(&val);
-    av_assert0(res == 3);
-    avpriv_atomic_ptr_cas(tmp2, tmp1, &res);
-    av_assert0(*tmp2 == &res);
-
-    return 0;
-}