mirror of
https://gitlab.isc.org/isc-projects/bind9
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83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*
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* Copyright (C) 2000, 2001, 2003-2005, 2007, 2013, 2016 Internet Systems Consortium, Inc. ("ISC")
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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/* $Id: thread.c,v 1.17 2007/06/19 23:47:18 tbox Exp $ */
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/*! \file */
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#include <config.h>
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#if defined(HAVE_SCHED_H)
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#include <sched.h>
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#endif
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#include <isc/thread.h>
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#include <isc/util.h>
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#ifndef THREAD_MINSTACKSIZE
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#define THREAD_MINSTACKSIZE (1024U * 1024)
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#endif
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isc_result_t
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isc_thread_create(isc_threadfunc_t func, isc_threadarg_t arg,
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isc_thread_t *thread)
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{
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pthread_attr_t attr;
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size_t stacksize;
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int ret;
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pthread_attr_init(&attr);
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#if defined(HAVE_PTHREAD_ATTR_GETSTACKSIZE) && \
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defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE)
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ret = pthread_attr_getstacksize(&attr, &stacksize);
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if (ret != 0)
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return (ISC_R_UNEXPECTED);
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if (stacksize < THREAD_MINSTACKSIZE) {
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ret = pthread_attr_setstacksize(&attr, THREAD_MINSTACKSIZE);
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if (ret != 0)
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return (ISC_R_UNEXPECTED);
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}
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#endif
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#if defined(PTHREAD_SCOPE_SYSTEM) && defined(NEED_PTHREAD_SCOPE_SYSTEM)
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ret = pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
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if (ret != 0)
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return (ISC_R_UNEXPECTED);
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#endif
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ret = pthread_create(thread, &attr, func, arg);
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if (ret != 0)
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return (ISC_R_UNEXPECTED);
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pthread_attr_destroy(&attr);
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return (ISC_R_SUCCESS);
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}
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void
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isc_thread_setconcurrency(unsigned int level) {
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#if defined(CALL_PTHREAD_SETCONCURRENCY)
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(void)pthread_setconcurrency(level);
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#else
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UNUSED(level);
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#endif
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}
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void
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isc_thread_yield(void) {
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#if defined(HAVE_SCHED_YIELD)
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sched_yield();
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#elif defined( HAVE_PTHREAD_YIELD)
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pthread_yield();
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#elif defined( HAVE_PTHREAD_YIELD_NP)
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pthread_yield_np();
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#endif
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}
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