Return to condition.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / ntp / lib / isc / pthreads

Annotation of embedaddon/ntp/lib/isc/pthreads/condition.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
        !             3:  * Copyright (C) 1998-2001  Internet Software Consortium.
        !             4:  *
        !             5:  * Permission to use, copy, modify, and/or distribute this software for any
        !             6:  * purpose with or without fee is hereby granted, provided that the above
        !             7:  * copyright notice and this permission notice appear in all copies.
        !             8:  *
        !             9:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
        !            10:  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
        !            11:  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
        !            12:  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
        !            13:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
        !            14:  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
        !            15:  * PERFORMANCE OF THIS SOFTWARE.
        !            16:  */
        !            17: 
        !            18: /* $Id: condition.c,v 1.36 2007/06/19 23:47:18 tbox Exp $ */
        !            19: 
        !            20: /*! \file */
        !            21: 
        !            22: #include <config.h>
        !            23: 
        !            24: #include <errno.h>
        !            25: 
        !            26: #include <isc/condition.h>
        !            27: #include <isc/msgs.h>
        !            28: #include <isc/strerror.h>
        !            29: #include <isc/string.h>
        !            30: #include <isc/time.h>
        !            31: #include <isc/util.h>
        !            32: 
        !            33: isc_result_t
        !            34: isc_condition_waituntil(isc_condition_t *c, isc_mutex_t *m, isc_time_t *t) {
        !            35:        int presult;
        !            36:        isc_result_t result;
        !            37:        struct timespec ts;
        !            38:        char strbuf[ISC_STRERRORSIZE];
        !            39: 
        !            40:        REQUIRE(c != NULL && m != NULL && t != NULL);
        !            41: 
        !            42:        /*
        !            43:         * POSIX defines a timespec's tv_sec as time_t.
        !            44:         */
        !            45:        result = isc_time_secondsastimet(t, &ts.tv_sec);
        !            46:        if (result != ISC_R_SUCCESS)
        !            47:                return (result);
        !            48: 
        !            49:        /*!
        !            50:         * POSIX defines a timespec's tv_nsec as long.  isc_time_nanoseconds
        !            51:         * ensures its return value is < 1 billion, which will fit in a long.
        !            52:         */
        !            53:        ts.tv_nsec = (long)isc_time_nanoseconds(t);
        !            54: 
        !            55:        do {
        !            56: #if ISC_MUTEX_PROFILE
        !            57:                presult = pthread_cond_timedwait(c, &m->mutex, &ts);
        !            58: #else
        !            59:                presult = pthread_cond_timedwait(c, m, &ts);
        !            60: #endif
        !            61:                if (presult == 0)
        !            62:                        return (ISC_R_SUCCESS);
        !            63:                if (presult == ETIMEDOUT)
        !            64:                        return (ISC_R_TIMEDOUT);
        !            65:        } while (presult == EINTR);
        !            66: 
        !            67:        isc__strerror(presult, strbuf, sizeof(strbuf));
        !            68:        UNEXPECTED_ERROR(__FILE__, __LINE__,
        !            69:                         "pthread_cond_timedwait() %s %s",
        !            70:                         isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
        !            71:                                        ISC_MSG_RETURNED, "returned"),
        !            72:                         strbuf);
        !            73:        return (ISC_R_UNEXPECTED);
        !            74: }