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113 lines
2.8 KiB
113 lines
2.8 KiB
/*
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* Copyright (C) 2006 iptelorg GmbH
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*!
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* \file
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* \brief Kamailio core :: atomic operations init
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* \ingroup core
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* Module: \ref core
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*/
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#include "atomic_ops_init.h"
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#include "atomic_ops.h"
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#if defined ATOMIC_OPS_USE_LOCK || defined ATOMIC_OPS_USE_LOCK_SET || \
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defined MEMBAR_USES_LOCK
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#include "locking.h"
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#endif
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#ifdef MEMBAR_USES_LOCK
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gen_lock_t* __membar_lock=0; /* init in atomic_ops.c */
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#endif
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#ifdef ATOMIC_OPS_USE_LOCK_SET
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gen_lock_set_t* _atomic_lock_set=0;
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#elif defined ATOMIC_OPS_USE_LOCK
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gen_lock_t* _atomic_lock=0;
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#endif
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/* returns 0 on success, -1 on error */
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int init_atomic_ops()
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{
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#ifdef MEMBAR_USES_LOCK
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if ((__membar_lock=lock_alloc())==0){
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goto error;
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}
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if (lock_init(__membar_lock)==0){
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lock_dealloc(__membar_lock);
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__membar_lock=0;
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goto error;
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}
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_membar_lock; /* start with the lock "taken" so that we can safely use
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unlock/lock sequences on it later */
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#endif
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#ifdef ATOMIC_OPS_USE_LOCK_SET
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if ((_atomic_lock_set=lock_set_alloc(_ATOMIC_LS_SIZE))==0){
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goto error;
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}
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if (lock_set_init(_atomic_lock_set)==0){
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lock_set_dealloc(_atomic_lock_set);
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_atomic_lock_set=0;
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goto error;
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}
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#elif defined ATOMIC_OPS_USE_LOCK
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if ((_atomic_lock=lock_alloc())==0){
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goto error;
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}
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if (lock_init(_atomic_lock)==0){
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lock_dealloc(_atomic_lock);
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_atomic_lock=0;
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goto error;
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}
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#endif /* ATOMIC_OPS_USE_LOCK_SET/ATOMIC_OPS_USE_LOCK */
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return 0;
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#if defined MEMBAR_USES_LOCK || defined ATOMIC_OPS_USE_LOCK || \
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defined ATOMIC_OPS_USE_LOCK_SET
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error:
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destroy_atomic_ops();
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return -1;
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#endif
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}
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void destroy_atomic_ops()
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{
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#ifdef MEMBAR_USES_LOCK
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if (__membar_lock!=0){
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lock_destroy(__membar_lock);
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lock_dealloc(__membar_lock);
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__membar_lock=0;
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}
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#endif
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#ifdef ATOMIC_OPS_USE_LOCK_SET
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if (_atomic_lock_set!=0){
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lock_set_destroy(_atomic_lock_set);
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lock_set_dealloc(_atomic_lock_set);
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_atomic_lock_set=0;
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}
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#elif defined ATOMIC_OPS_USE_LOCK
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if (_atomic_lock!=0){
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lock_destroy(_atomic_lock);
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lock_dealloc(_atomic_lock);
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_atomic_lock=0;
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}
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#endif /* ATOMIC_OPS_USE_LOCK_SET / ATOMIC_OPS_USE_LOCK*/
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}
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