3b0a9131e6
This includes a number of accepted upstream fixes, as well as a reimplementation of the net/carp/... testcase (which is currently unused).
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/* $NetBSD: t_swapcontext.c,v 1.3 2017/01/16 16:27:06 christos Exp $ */
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/*
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* Copyright (c) 2012 Emmanuel Dreyfus. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD");
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#include <sys/types.h>
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#include <errno.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ucontext.h>
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#include <atf-c.h>
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#include "h_common.h"
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#define STACKSIZE 65536
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char stack[STACKSIZE];
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ucontext_t nctx;
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ucontext_t octx;
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void *oself;
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void *nself;
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int val1, val2;
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/* ARGSUSED0 */
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static void
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swapfunc(void *arg)
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{
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/*
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* If the test fails, we are very likely to crash
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* without the opportunity to report
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*/
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nself = (void *)pthread_self();
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printf("after swapcontext self = %p\n", nself);
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ATF_REQUIRE_EQ(oself, nself);
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printf("Test succeeded\n");
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/* Go back in main */
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ATF_REQUIRE(swapcontext(&nctx, &octx));
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/* NOTREACHED */
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return;
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}
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/* ARGSUSED0 */
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static void *
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threadfunc(void *arg)
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{
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nctx.uc_stack.ss_sp = stack;
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nctx.uc_stack.ss_size = sizeof(stack);
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makecontext(&nctx, (void *)*swapfunc, 0);
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oself = (void *)pthread_self();
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printf("before swapcontext self = %p\n", oself);
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ATF_REQUIRE_MSG(swapcontext(&octx, &nctx) != -1, "swapcontext failed: %s",
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strerror(errno));
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/* NOTREACHED */
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return NULL;
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}
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ATF_TC(swapcontext1);
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ATF_TC_HEAD(swapcontext1, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Testing if swapcontext() "
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"alters pthread_self()");
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}
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ATF_TC_BODY(swapcontext1, tc)
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{
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pthread_t thread;
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#if defined(__FreeBSD__) && defined(__mips__)
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/*
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* MIPS modifies TLS pointer in set_mcontext(), so
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* swapping contexts obtained from different threads
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* gives us different pthread_self() return value.
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*/
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atf_tc_skip("Platform is not supported.");
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#endif
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oself = (void *)&val1;
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nself = (void *)&val2;
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printf("Testing if swapcontext() alters pthread_self()\n");
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ATF_REQUIRE_MSG(getcontext(&nctx) != -1, "getcontext failed: %s",
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strerror(errno));
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PTHREAD_REQUIRE(pthread_create(&thread, NULL, threadfunc, NULL));
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PTHREAD_REQUIRE(pthread_join(thread, NULL));
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, swapcontext1);
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return atf_no_error();
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}
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