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

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
        !             3:  * Copyright (C) 2000, 2001, 2003  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: thread.c,v 1.17 2007/06/19 23:47:18 tbox Exp $ */
        !            19: 
        !            20: /*! \file */
        !            21: 
        !            22: #include <config.h>
        !            23: 
        !            24: #include <isc/thread.h>
        !            25: #include <isc/util.h>
        !            26: 
        !            27: #ifndef THREAD_MINSTACKSIZE
        !            28: #define THREAD_MINSTACKSIZE            (64U * 1024)
        !            29: #endif
        !            30: 
        !            31: isc_result_t
        !            32: isc_thread_create(isc_threadfunc_t func, isc_threadarg_t arg,
        !            33:                  isc_thread_t *thread)
        !            34: {
        !            35:        pthread_attr_t attr;
        !            36:        size_t stacksize;
        !            37:        int ret;
        !            38: 
        !            39:        pthread_attr_init(&attr);
        !            40: 
        !            41: #if defined(HAVE_PTHREAD_ATTR_GETSTACKSIZE) && \
        !            42:     defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE)
        !            43:        ret = pthread_attr_getstacksize(&attr, &stacksize);
        !            44:        if (ret != 0)
        !            45:                return (ISC_R_UNEXPECTED);
        !            46: 
        !            47:        if (stacksize < THREAD_MINSTACKSIZE) {
        !            48:                ret = pthread_attr_setstacksize(&attr, THREAD_MINSTACKSIZE);
        !            49:                if (ret != 0)
        !            50:                        return (ISC_R_UNEXPECTED);
        !            51:        }
        !            52: #endif
        !            53: 
        !            54: #if defined(PTHREAD_SCOPE_SYSTEM) && defined(NEED_PTHREAD_SCOPE_SYSTEM)
        !            55:        ret = pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
        !            56:        if (ret != 0)
        !            57:                return (ISC_R_UNEXPECTED);
        !            58: #endif
        !            59: 
        !            60:        ret = pthread_create(thread, &attr, func, arg);
        !            61:        if (ret != 0)
        !            62:                return (ISC_R_UNEXPECTED);
        !            63: 
        !            64:        pthread_attr_destroy(&attr);
        !            65: 
        !            66:        return (ISC_R_SUCCESS);
        !            67: }
        !            68: 
        !            69: void
        !            70: isc_thread_setconcurrency(unsigned int level) {
        !            71: #if defined(CALL_PTHREAD_SETCONCURRENCY)
        !            72:        (void)pthread_setconcurrency(level);
        !            73: #else
        !            74:        UNUSED(level);
        !            75: #endif
        !            76: }