1 /* $NetBSD: thread.c,v 1.1.1.1 2009/12/13 16:54:32 kardel Exp $ */ 2 3 /* 4 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 5 * Copyright (C) 2000, 2001, 2003 Internet Software Consortium. 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* Id: thread.c,v 1.17 2007/06/19 23:47:18 tbox Exp */ 21 22 /*! \file */ 23 24 #include <config.h> 25 26 #include <isc/thread.h> 27 #include <isc/util.h> 28 29 #ifndef THREAD_MINSTACKSIZE 30 #define THREAD_MINSTACKSIZE (64U * 1024) 31 #endif 32 33 isc_result_t 34 isc_thread_create(isc_threadfunc_t func, isc_threadarg_t arg, 35 isc_thread_t *thread) 36 { 37 pthread_attr_t attr; 38 size_t stacksize; 39 int ret; 40 41 pthread_attr_init(&attr); 42 43 #if defined(HAVE_PTHREAD_ATTR_GETSTACKSIZE) && \ 44 defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE) 45 ret = pthread_attr_getstacksize(&attr, &stacksize); 46 if (ret != 0) 47 return (ISC_R_UNEXPECTED); 48 49 if (stacksize < THREAD_MINSTACKSIZE) { 50 ret = pthread_attr_setstacksize(&attr, THREAD_MINSTACKSIZE); 51 if (ret != 0) 52 return (ISC_R_UNEXPECTED); 53 } 54 #endif 55 56 #if defined(PTHREAD_SCOPE_SYSTEM) && defined(NEED_PTHREAD_SCOPE_SYSTEM) 57 ret = pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); 58 if (ret != 0) 59 return (ISC_R_UNEXPECTED); 60 #endif 61 62 ret = pthread_create(thread, &attr, func, arg); 63 if (ret != 0) 64 return (ISC_R_UNEXPECTED); 65 66 pthread_attr_destroy(&attr); 67 68 return (ISC_R_SUCCESS); 69 } 70 71 void 72 isc_thread_setconcurrency(unsigned int level) { 73 #if defined(CALL_PTHREAD_SETCONCURRENCY) 74 (void)pthread_setconcurrency(level); 75 #else 76 UNUSED(level); 77 #endif 78 } 79