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89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
/*
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* Copyright (c) 2008 Niels Provos <provos@citi.umich.edu>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _EVTHREAD_INTERNAL_H_
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#define _EVTHREAD_INTERNAL_H_
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#ifdef __cplusplus
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//extern "C" {
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#endif
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#include "event-config.h"
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struct event_base;
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#ifndef _EVENT_DISABLE_THREAD_SUPPORT
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extern void (*_evthread_locking_fn)(int mode, void *lock);
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extern unsigned long (*_evthread_id_fn)(void);
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extern void *(*_evthread_lock_alloc_fn)(void);
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extern void (*_evthread_lock_free_fn)(void *);
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#define EVBASE_USING_LOCKS(base) \
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(base != NULL && (base)->th_base_lock != NULL)
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#define EVTHREAD_GET_ID() \
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(_evthread_id_fn ? _evthread_id_fn() : 1)
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#define EVBASE_IN_THREAD(base) \
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(_evthread_id_fn == NULL || \
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(base)->th_owner_id == _evthread_id_fn())
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#define EVTHREAD_ALLOC_LOCK(lockvar) \
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((lockvar) = _evthread_lock_alloc_fn ? \
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_evthread_lock_alloc_fn() : NULL)
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#define EVTHREAD_FREE_LOCK(lockvar) \
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do { \
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if (lockvar && _evthread_lock_free_fn) \
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_evthread_lock_free_fn(lockvar); \
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} while (0);
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#define EVBASE_ACQUIRE_LOCK(base, mode, lock) do { \
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if (EVBASE_USING_LOCKS(base)) \
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_evthread_locking_fn(EVTHREAD_LOCK | mode, \
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(base)->lock); \
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} while (0)
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#define EVBASE_RELEASE_LOCK(base, mode, lock) do { \
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if (EVBASE_USING_LOCKS(base)) \
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_evthread_locking_fn(EVTHREAD_UNLOCK | mode, \
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(base)->lock); \
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} while (0)
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#else /* _EVENT_DISABLE_THREAD_SUPPORT */
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#define EVTHREAD_GET_ID() 1
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#define EVTHREAD_ALLOC_LOCK(lockvar)
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#define EVTHREAD_FREE_LOCK(lockvar)
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#define EVBASE_IN_THREAD() 1
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#define EVBASE_ACQUIRE_LOCK(base, mode, lock)
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#define EVBASE_RELEASE_LOCK(base, mode, lock)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _EVTHREAD_INTERNAL_H_ */
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