LCOV - code coverage report
Current view: top level - src/libavutil - atomic_gcc.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 9 9 100.0 %
Date: 2017-01-24 04:42:20 Functions: 4 4 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : #ifndef AVUTIL_ATOMIC_GCC_H
      22             : #define AVUTIL_ATOMIC_GCC_H
      23             : 
      24             : #include <stdint.h>
      25             : 
      26             : #include "atomic.h"
      27             : 
      28             : #define avpriv_atomic_int_get atomic_int_get_gcc
      29      176059 : static inline int atomic_int_get_gcc(volatile int *ptr)
      30             : {
      31             : #if HAVE_ATOMIC_COMPARE_EXCHANGE
      32      176059 :     return __atomic_load_n(ptr, __ATOMIC_SEQ_CST);
      33             : #else
      34             :     __sync_synchronize();
      35             :     return *ptr;
      36             : #endif
      37             : }
      38             : 
      39             : #define avpriv_atomic_int_set atomic_int_set_gcc
      40       45464 : static inline void atomic_int_set_gcc(volatile int *ptr, int val)
      41             : {
      42             : #if HAVE_ATOMIC_COMPARE_EXCHANGE
      43       45464 :     __atomic_store_n(ptr, val, __ATOMIC_SEQ_CST);
      44             : #else
      45             :     *ptr = val;
      46             :     __sync_synchronize();
      47             : #endif
      48       45464 : }
      49             : 
      50             : #define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc
      51     9813689 : static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc)
      52             : {
      53             : #if HAVE_ATOMIC_COMPARE_EXCHANGE
      54     9813689 :     return __atomic_add_fetch(ptr, inc, __ATOMIC_SEQ_CST);
      55             : #else
      56             :     return __sync_add_and_fetch(ptr, inc);
      57             : #endif
      58             : }
      59             : 
      60             : #define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc
      61     7147006 : static inline void *atomic_ptr_cas_gcc(void * volatile *ptr,
      62             :                                        void *oldval, void *newval)
      63             : {
      64             : #if HAVE_SYNC_VAL_COMPARE_AND_SWAP
      65             : #ifdef __ARMCC_VERSION
      66             :     // armcc will throw an error if ptr is not an integer type
      67             :     volatile uintptr_t *tmp = (volatile uintptr_t*)ptr;
      68             :     return (void*)__sync_val_compare_and_swap(tmp, oldval, newval);
      69             : #else
      70     7147006 :     return __sync_val_compare_and_swap(ptr, oldval, newval);
      71             : #endif
      72             : #else
      73             :     __atomic_compare_exchange_n(ptr, &oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
      74             :     return oldval;
      75             : #endif
      76             : }
      77             : 
      78             : #endif /* AVUTIL_ATOMIC_GCC_H */

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