60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/*
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* Copyright (C) 2004, 2007 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2000, 2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: condition.h,v 1.6 2007/06/19 23:47:18 tbox Exp $ */
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/*
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* This provides a limited subset of the isc_condition_t
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* functionality for use by single-threaded programs that
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* need to block waiting for events. Only a single
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* call to isc_condition_wait() may be blocked at any given
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* time, and the _waituntil and _broadcast functions are not
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* supported. This is intended primarily for use by the omapi
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* library, and may go away once omapi goes away. Use for
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* other purposes is strongly discouraged.
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*/
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#ifndef ISC_CONDITION_H
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#define ISC_CONDITION_H 1
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#include <isc/mutex.h>
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typedef int isc_condition_t;
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isc_result_t isc__nothread_wait_hack(isc_condition_t *cp, isc_mutex_t *mp);
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isc_result_t isc__nothread_signal_hack(isc_condition_t *cp);
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#define isc_condition_init(cp) \
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(*(cp) = 0, ISC_R_SUCCESS)
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#define isc_condition_wait(cp, mp) \
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isc__nothread_wait_hack(cp, mp)
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#define isc_condition_waituntil(cp, mp, tp) \
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((void)(cp), (void)(mp), (void)(tp), ISC_R_NOTIMPLEMENTED)
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#define isc_condition_signal(cp) \
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isc__nothread_signal_hack(cp)
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#define isc_condition_broadcast(cp) \
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((void)(cp), ISC_R_NOTIMPLEMENTED)
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#define isc_condition_destroy(cp) \
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(*(cp) == 0 ? (*(cp) = -1, ISC_R_SUCCESS) : ISC_R_UNEXPECTED)
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#endif /* ISC_CONDITION_H */
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