util.h revision 2328307a8f353078dbbebf242007271153e18cd1
/*
* Copyright (C) 1998, 1999 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#ifndef ISC_UTIL_H
#define ISC_UTIL_H 1
#include <isc/error.h>
/***
*** General Macros.
***/
/*
* We use macros instead of calling the routines directly because
* the capital letters make the locking stand out.
*
* We RUNTIME_CHECK for success since in general there's no way
* for us to continue if they fail.
*/
#define LOCK(lp) \
RUNTIME_CHECK(isc_mutex_lock((lp)) == ISC_R_SUCCESS)
#define UNLOCK(lp) \
RUNTIME_CHECK(isc_mutex_unlock((lp)) == ISC_R_SUCCESS)
#define BROADCAST(cvp) \
RUNTIME_CHECK(isc_condition_broadcast((cvp)) == ISC_R_SUCCESS)
#define SIGNAL(cvp) \
RUNTIME_CHECK(isc_condition_signal((cvp)) == ISC_R_SUCCESS)
#define WAIT(cvp, lp) \
RUNTIME_CHECK(isc_condition_wait((cvp), (lp)) == ISC_R_SUCCESS)
/*
* isc_condition_waituntil can return ISC_R_TIMEDOUT, so we
* don't RUNTIME_CHECK the result.
*/
#define WAITUNTIL(cvp, lp, tp) \
isc_condition_waituntil((cvp), (lp), (tp))
#define RWLOCK(lp, t) \
RUNTIME_CHECK(isc_rwlock_lock((lp), (t)) == ISC_R_SUCCESS)
#define RWUNLOCK(lp, t) \
RUNTIME_CHECK(isc_rwlock_unlock((lp), (t)) == ISC_R_SUCCESS)
#endif /* ISC_UTIL_H */