mirror of
https://git.ffmpeg.org/ffmpeg.git
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lavu: remove the custom atomic API
It has been replaced by C11 stdatomic.h and is now unused.
This commit is contained in:
Anton Khirnov
parent
59c7022740
commit
5cc0057f49
2
configure
vendored
2
configure
vendored
@ -1651,7 +1651,6 @@ HAVE_LIST="
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$(add_suffix _external $ARCH_EXT_LIST)
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$(add_suffix _inline $ARCH_EXT_LIST)
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$ARCH_FEATURES
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$ATOMICS_LIST
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$BUILTIN_LIST
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$HAVE_LIST_CMDLINE
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$HAVE_LIST_PUB
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@ -1662,7 +1661,6 @@ HAVE_LIST="
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$THREADS_LIST
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$TOOLCHAIN_FEATURES
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$TYPES_LIST
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atomics_native
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dos_paths
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dxva2_lib
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libc_msvcrt
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@ -64,7 +64,6 @@ BUILT_HEADERS = avconfig.h
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OBJS = adler32.o \
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aes.o \
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atomic.o \
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audio_fifo.o \
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avstring.o \
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base64.o \
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@ -123,13 +122,9 @@ SKIPHEADERS-$(CONFIG_DXVA2) += hwcontext_dxva2.h
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SKIPHEADERS-$(CONFIG_LIBMFX) += hwcontext_qsv.h
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SKIPHEADERS-$(CONFIG_VAAPI) += hwcontext_vaapi.h
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SKIPHEADERS-$(CONFIG_VDPAU) += hwcontext_vdpau.h
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SKIPHEADERS-$(HAVE_ATOMICS_GCC) += atomic_gcc.h
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SKIPHEADERS-$(HAVE_ATOMICS_SUNCC) += atomic_suncc.h
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SKIPHEADERS-$(HAVE_ATOMICS_WIN32) += atomic_win32.h
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TESTPROGS = adler32 \
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aes \
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atomic \
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avstring \
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base64 \
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blowfish \
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@ -1,109 +0,0 @@
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/*
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* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "atomic.h"
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#if !HAVE_ATOMICS_NATIVE
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#if HAVE_PTHREADS
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#include <pthread.h>
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static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER;
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int avpriv_atomic_int_get(volatile int *ptr)
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{
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int res;
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pthread_mutex_lock(&atomic_lock);
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res = *ptr;
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pthread_mutex_unlock(&atomic_lock);
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return res;
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}
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void avpriv_atomic_int_set(volatile int *ptr, int val)
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{
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pthread_mutex_lock(&atomic_lock);
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*ptr = val;
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pthread_mutex_unlock(&atomic_lock);
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}
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int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc)
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{
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int res;
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pthread_mutex_lock(&atomic_lock);
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*ptr += inc;
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res = *ptr;
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pthread_mutex_unlock(&atomic_lock);
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return res;
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}
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void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval)
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{
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void *ret;
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pthread_mutex_lock(&atomic_lock);
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ret = *ptr;
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if (*ptr == oldval)
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*ptr = newval;
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pthread_mutex_unlock(&atomic_lock);
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return ret;
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}
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#elif !HAVE_THREADS
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int avpriv_atomic_int_get(volatile int *ptr)
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{
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return *ptr;
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}
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void avpriv_atomic_int_set(volatile int *ptr, int val)
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{
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*ptr = val;
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}
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int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc)
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{
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*ptr += inc;
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return *ptr;
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}
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void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval)
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{
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if (*ptr == oldval) {
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*ptr = newval;
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return oldval;
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}
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return *ptr;
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}
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#else /* HAVE_THREADS */
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/* This should never trigger, unless a new threading implementation
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* without correct atomics dependencies in configure or a corresponding
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* atomics implementation is added. */
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#error "Threading is enabled, but there is no implementation of atomic operations available"
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#endif /* HAVE_PTHREADS */
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#endif /* !HAVE_ATOMICS_NATIVE */
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@ -1,79 +0,0 @@
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/*
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* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_ATOMIC_H
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#define AVUTIL_ATOMIC_H
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#include "config.h"
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#if HAVE_ATOMICS_NATIVE
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#if HAVE_ATOMICS_GCC
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#include "atomic_gcc.h"
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#elif HAVE_ATOMICS_WIN32
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#include "atomic_win32.h"
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#elif HAVE_ATOMICS_SUNCC
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#include "atomic_suncc.h"
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#endif
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#else
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/**
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* Load the current value stored in an atomic integer.
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*
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* @param ptr atomic integer
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* @return the current value of the atomic integer
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* @note This acts as a memory barrier.
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*/
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int avpriv_atomic_int_get(volatile int *ptr);
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/**
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* Store a new value in an atomic integer.
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*
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* @param ptr atomic integer
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* @param val the value to store in the atomic integer
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* @note This acts as a memory barrier.
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*/
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void avpriv_atomic_int_set(volatile int *ptr, int val);
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/**
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* Add a value to an atomic integer.
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*
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* @param ptr atomic integer
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* @param inc the value to add to the atomic integer (may be negative)
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* @return the new value of the atomic integer.
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* @note This does NOT act as a memory barrier. This is primarily
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* intended for reference counting.
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*/
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int avpriv_atomic_int_add_and_fetch(volatile int *ptr, int inc);
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/**
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* Atomic pointer compare and swap.
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*
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* @param ptr pointer to the pointer to operate on
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* @param oldval do the swap if the current value of *ptr equals to oldval
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* @param newval value to replace *ptr with
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* @return the value of *ptr before comparison
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*/
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void *avpriv_atomic_ptr_cas(void * volatile *ptr, void *oldval, void *newval);
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#endif /* HAVE_ATOMICS_NATIVE */
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#endif /* AVUTIL_ATOMIC_H */
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@ -1,61 +0,0 @@
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/*
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* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_ATOMIC_GCC_H
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#define AVUTIL_ATOMIC_GCC_H
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#include <stdint.h>
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#include "atomic.h"
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#define avpriv_atomic_int_get atomic_int_get_gcc
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static inline int atomic_int_get_gcc(volatile int *ptr)
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{
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__sync_synchronize();
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return *ptr;
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}
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#define avpriv_atomic_int_set atomic_int_set_gcc
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static inline void atomic_int_set_gcc(volatile int *ptr, int val)
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{
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*ptr = val;
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__sync_synchronize();
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}
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#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc
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static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc)
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{
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return __sync_add_and_fetch(ptr, inc);
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}
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#define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc
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static inline void *atomic_ptr_cas_gcc(void * volatile *ptr,
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void *oldval, void *newval)
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{
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#ifdef __ARMCC_VERSION
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// armcc will throw an error if ptr is not an integer type
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volatile uintptr_t *tmp = (volatile uintptr_t*)ptr;
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return (void*)__sync_val_compare_and_swap(tmp, oldval, newval);
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#else
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return __sync_val_compare_and_swap(ptr, oldval, newval);
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#endif
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}
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#endif /* AVUTIL_ATOMIC_GCC_H */
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@ -1,54 +0,0 @@
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/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_ATOMIC_SUNCC_H
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#define AVUTIL_ATOMIC_SUNCC_H
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#include <atomic.h>
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#include <mbarrier.h>
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#include "atomic.h"
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#define avpriv_atomic_int_get atomic_int_get_suncc
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static inline int atomic_int_get_suncc(volatile int *ptr)
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{
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__machine_rw_barrier();
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return *ptr;
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}
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#define avpriv_atomic_int_set atomic_int_set_suncc
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static inline void atomic_int_set_suncc(volatile int *ptr, int val)
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{
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*ptr = val;
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__machine_rw_barrier();
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}
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#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_suncc
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static inline int atomic_int_add_and_fetch_suncc(volatile int *ptr, int inc)
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{
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return atomic_add_int_nv(ptr, inc);
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}
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#define avpriv_atomic_ptr_cas atomic_ptr_cas_suncc
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static inline void *atomic_ptr_cas_suncc(void * volatile *ptr,
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void *oldval, void *newval)
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{
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return atomic_cas_ptr(ptr, oldval, newval);
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}
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#endif /* AVUTIL_ATOMIC_SUNCC_H */
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@ -1,53 +0,0 @@
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/*
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* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_ATOMIC_WIN32_H
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#define AVUTIL_ATOMIC_WIN32_H
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#include <windows.h>
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#define avpriv_atomic_int_get atomic_int_get_win32
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static inline int atomic_int_get_win32(volatile int *ptr)
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{
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MemoryBarrier();
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return *ptr;
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}
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#define avpriv_atomic_int_set atomic_int_set_win32
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static inline void atomic_int_set_win32(volatile int *ptr, int val)
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{
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*ptr = val;
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MemoryBarrier();
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}
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#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_win32
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static inline int atomic_int_add_and_fetch_win32(volatile int *ptr, int inc)
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{
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return inc + InterlockedExchangeAdd(ptr, inc);
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}
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#define avpriv_atomic_ptr_cas atomic_ptr_cas_win32
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static inline void *atomic_ptr_cas_win32(void * volatile *ptr,
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void *oldval, void *newval)
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{
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return InterlockedCompareExchangePointer(ptr, newval, oldval);
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}
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#endif /* AVUTIL_ATOMIC_WIN32_H */
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@ -1,35 +0,0 @@
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/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
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* version 2.1 of the License, or (at your option) any later version.
|
||||
*
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* Libav 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.
|
||||
*
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* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with Libav; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <assert.h>
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#include "libavutil/atomic.h"
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int main(void)
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{
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volatile int val = 1;
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int res;
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res = avpriv_atomic_int_add_and_fetch(&val, 1);
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assert(res == 2);
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avpriv_atomic_int_set(&val, 3);
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res = avpriv_atomic_int_get(&val);
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assert(res == 3);
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return 0;
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}
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@ -8,11 +8,6 @@ fate-aes: libavutil/tests/aes$(EXESUF)
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fate-aes: CMD = run libavutil/tests/aes
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fate-aes: REF = /dev/null
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FATE_LIBAVUTIL += fate-atomic
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fate-atomic: libavutil/tests/atomic$(EXESUF)
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fate-atomic: CMD = run libavutil/tests/atomic
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fate-atomic: REF = /dev/null
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FATE_LIBAVUTIL += fate-avstring
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fate-avstring: libavutil/tests/avstring$(EXESUF)
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fate-avstring: CMD = run libavutil/tests/avstring
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