From bb81ed476569b912a37ed553e756e123b6b13b14 Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Sun, 17 Jul 2016 18:56:33 +0200 Subject: Add a compat stdatomic.h implementation based on suncc atomics MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Adapted from the code by Rémi Denis-Courmont from VLC --- compat/atomics/suncc/stdatomic.h | 186 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 compat/atomics/suncc/stdatomic.h (limited to 'compat') diff --git a/compat/atomics/suncc/stdatomic.h b/compat/atomics/suncc/stdatomic.h new file mode 100644 index 0000000..32129aa --- /dev/null +++ b/compat/atomics/suncc/stdatomic.h @@ -0,0 +1,186 @@ +/* + * This file is part of Libav. + * + * Libav 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. + * + * 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. + * + * 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 + */ + +#ifndef LIBAV_COMPAT_ATOMICS_SUNCC_STDATOMIC_H +#define LIBAV_COMPAT_ATOMICS_SUNCC_STDATOMIC_H + +#include +#include +#include +#include + +#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) \ + __machine_rw_barrier(); + +#define atomic_signal_fence(order) \ + ((void)0) + +#define atomic_is_lock_free(obj) 0 + +typedef intptr_t atomic_flag; +typedef intptr_t atomic_bool; +typedef intptr_t atomic_char; +typedef intptr_t atomic_schar; +typedef intptr_t atomic_uchar; +typedef intptr_t atomic_short; +typedef intptr_t atomic_ushort; +typedef intptr_t atomic_int; +typedef intptr_t atomic_uint; +typedef intptr_t atomic_long; +typedef intptr_t atomic_ulong; +typedef intptr_t atomic_llong; +typedef intptr_t atomic_ullong; +typedef intptr_t atomic_wchar_t; +typedef intptr_t atomic_int_least8_t; +typedef intptr_t atomic_uint_least8_t; +typedef intptr_t atomic_int_least16_t; +typedef intptr_t atomic_uint_least16_t; +typedef intptr_t atomic_int_least32_t; +typedef intptr_t atomic_uint_least32_t; +typedef intptr_t atomic_int_least64_t; +typedef intptr_t atomic_uint_least64_t; +typedef intptr_t atomic_int_fast8_t; +typedef intptr_t atomic_uint_fast8_t; +typedef intptr_t atomic_int_fast16_t; +typedef intptr_t atomic_uint_fast16_t; +typedef intptr_t atomic_int_fast32_t; +typedef intptr_t atomic_uint_fast32_t; +typedef intptr_t atomic_int_fast64_t; +typedef intptr_t atomic_uint_fast64_t; +typedef intptr_t atomic_intptr_t; +typedef intptr_t atomic_uintptr_t; +typedef intptr_t atomic_size_t; +typedef intptr_t atomic_ptrdiff_t; +typedef intptr_t atomic_intmax_t; +typedef intptr_t atomic_uintmax_t; + +static inline void atomic_store(intptr_t *object, intptr_t desired) +{ + *object = desired; + __machine_rw_barrier(); +} + +#define atomic_store_explicit(object, desired, order) \ + atomic_store(object, desired) + +static inline intptr_t atomic_load(intptr_t *object) +{ + __machine_rw_barrier(); + return *object; +} + +#define atomic_load_explicit(object, order) \ + atomic_load(object) + +#define atomic_exchange(object, desired) \ + atomic_swap_ptr(object, desired) + +#define atomic_exchange_explicit(object, desired, order) \ + atomic_exchange(object, desired) + +static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *expected, + intptr_t desired) +{ + intptr_t old = *expected; + *expected = atomic_cas_ptr(object, old, desired); + return *expected == 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) + +static inline intptr_t atomic_fetch_add(intptr_t *object, intptr_t operand) +{ + return atomic_add_ptr_nv(object, operand) - operand; +} + +#define atomic_fetch_sub(object, operand) \ + atomic_fetch_add(object, -(operand)) + +static inline intptr_t atomic_fetch_or(intptr_t *object, intptr_t operand) +{ + intptr_t old; + do { + old = atomic_load(object); + } while (!atomic_compare_exchange_strong(object, old, old | operand)); + return old; +} + +static inline intptr_t atomic_fetch_xor(intptr_t *object, intptr_t operand) +{ + intptr_t old; + do { + old = atomic_load(object); + } while (!atomic_compare_exchange_strong(object, old, old ^ operand)); + return old; +} + +static inline intptr_t atomic_fetch_and(intptr_t *object, intptr_t operand) +{ + intptr_t old; + do { + old = atomic_load(object); + } while (!atomic_compare_exchange_strong(object, old, old & operand)); + return old; +} + +#define atomic_fetch_add_explicit(object, operand, order) \ + atomic_fetch_add(object, operand) + +#define atomic_fetch_sub_explicit(object, operand, order) \ + atomic_fetch_sub(object, operand) + +#define atomic_fetch_or_explicit(object, operand, order) \ + atomic_fetch_or(object, operand) + +#define atomic_fetch_xor_explicit(object, operand, order) \ + atomic_fetch_sub(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 /* LIBAV_COMPAT_ATOMICS_SUNCC_STDATOMIC_H */ -- cgit v1.1