diff options
| -rw-r--r-- | compat/atomics/gcc/stdatomic.h | 173 | ||||
| -rwxr-xr-x | configure | 6 |
2 files changed, 179 insertions, 0 deletions
diff --git a/compat/atomics/gcc/stdatomic.h b/compat/atomics/gcc/stdatomic.h new file mode 100644 index 0000000..55cc4e4 --- /dev/null +++ b/compat/atomics/gcc/stdatomic.h @@ -0,0 +1,173 @@ +/* + * 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 + */ + +/* + * based on vlc_atomic.h from VLC + * Copyright (C) 2010 Rémi Denis-Courmont + */ + +#ifndef FFMPEG_COMPAT_ATOMICS_GCC_STDATOMIC_H +#define FFMPEG_COMPAT_ATOMICS_GCC_STDATOMIC_H + +#include <stddef.h> +#include <stdint.h> + +#define ATOMIC_FLAG_INIT 0 + +#define ATOMIC_VAR_INIT(value) (value) + +#define atomic_init(obj, value) \ +do { \ + *(obj) = (value); \ +} while(0) + +#define kill_dependency(y) ((void)0) + +#define atomic_thread_fence(order) \ + __sync_synchronize() + +#define atomic_signal_fence(order) \ + ((void)0) + +#define atomic_is_lock_free(obj) 0 + +typedef _Bool atomic_flag; +typedef _Bool atomic_bool; +typedef char atomic_char; +typedef signed char atomic_schar; +typedef unsigned char atomic_uchar; +typedef short atomic_short; +typedef unsigned short atomic_ushort; +typedef int atomic_int; +typedef unsigned int atomic_uint; +typedef long atomic_long; +typedef unsigned long atomic_ulong; +typedef long long atomic_llong; +typedef unsigned long long atomic_ullong; +typedef wchar_t atomic_wchar_t; +typedef int_least8_t atomic_int_least8_t; +typedef uint_least8_t atomic_uint_least8_t; +typedef int_least16_t atomic_int_least16_t; +typedef uint_least16_t atomic_uint_least16_t; +typedef int_least32_t atomic_int_least32_t; +typedef uint_least32_t atomic_uint_least32_t; +typedef int_least64_t atomic_int_least64_t; +typedef uint_least64_t atomic_uint_least64_t; +typedef int_fast8_t atomic_int_fast8_t; +typedef uint_fast8_t atomic_uint_fast8_t; +typedef int_fast16_t atomic_int_fast16_t; +typedef uint_fast16_t atomic_uint_fast16_t; +typedef int_fast32_t atomic_int_fast32_t; +typedef uint_fast32_t atomic_uint_fast32_t; +typedef int_fast64_t atomic_int_fast64_t; +typedef uint_fast64_t atomic_uint_fast64_t; +typedef intptr_t atomic_intptr_t; +typedef uintptr_t atomic_uintptr_t; +typedef size_t atomic_size_t; +typedef ptrdiff_t atomic_ptrdiff_t; +typedef intmax_t atomic_intmax_t; +typedef uintmax_t atomic_uintmax_t; + +#define atomic_store(object, desired) \ +do { \ + *(object) = (desired); \ + __sync_synchronize(); \ +} while (0) + +#define atomic_store_explicit(object, desired, order) \ + atomic_store(object, desired) + +#define atomic_load(object) \ + (__sync_synchronize(), *(object)) + +#define atomic_load_explicit(object, order) \ + atomic_load(object) + +#define atomic_exchange(object, desired) \ +({ \ + typeof(object) _obj = (object); \ + typeof(*object) _old; \ + do \ + _old = atomic_load(_obj); \ + while (!__sync_bool_compare_and_swap(_obj, _old, (desired))); \ + _old; \ +}) + +#define atomic_exchange_explicit(object, desired, order) \ + atomic_exchange(object, desired) + +#define atomic_compare_exchange_strong(object, expected, desired) \ +({ \ + typeof(object) _exp = (expected); \ + typeof(*object) _old = *_exp; \ + *_exp = __sync_val_compare_and_swap((object), _old, (desired)); \ + *_exp == _old; \ +}) + +#define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \ + atomic_compare_exchange_strong(object, expected, desired) + +#define atomic_compare_exchange_weak(object, expected, desired) \ + atomic_compare_exchange_strong(object, expected, desired) + +#define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \ + atomic_compare_exchange_weak(object, expected, desired) + +#define atomic_fetch_add(object, operand) \ + __sync_fetch_and_add(object, operand) + +#define atomic_fetch_add_explicit(object, operand, order) \ + atomic_fetch_add(object, operand) + +#define atomic_fetch_sub(object, operand) \ + __sync_fetch_and_sub(object, operand) + +#define atomic_fetch_sub_explicit(object, operand, order) \ + atomic_fetch_sub(object, operand) + +#define atomic_fetch_or(object, operand) \ + __sync_fetch_and_or(object, operand) + +#define atomic_fetch_or_explicit(object, operand, order) \ + atomic_fetch_or(object, operand) + +#define atomic_fetch_xor(object, operand) \ + __sync_fetch_and_sub(object, operand) + +#define atomic_fetch_xor_explicit(object, operand, order) \ + atomic_fetch_sub(object, operand) + +#define atomic_fetch_and(object, operand) \ + __sync_fetch_and_and(object, operand) + +#define atomic_fetch_and_explicit(object, operand, order) \ + atomic_fetch_and(object, operand) + +#define atomic_flag_test_and_set(object) \ + atomic_exchange(object, 1) + +#define atomic_flag_test_and_set_explicit(object, order) \ + atomic_flag_test_and_set(object) + +#define atomic_flag_clear(object) \ + atomic_store(object, 0) + +#define atomic_flag_clear_explicit(object, order) \ + atomic_flag_clear(object) + +#endif /* FFMPEG_COMPAT_ATOMICS_GCC_STDATOMIC_H */ @@ -6381,6 +6381,12 @@ for thread in $THREADS_LIST; do fi done +if disabled stdatomic_h; then + if enabled atomics_gcc; then + add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc' + fi +fi + enabled zlib && add_cppflags -DZLIB_CONST # conditional library dependencies, in linking order |
