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 } 77