1 /* $NetBSD: t_swapcontext.c,v 1.3 2017/01/16 16:27:06 christos Exp $ */
4 * Copyright (c) 2012 Emmanuel Dreyfus. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
31 #include <sys/types.h>
43 #define STACKSIZE 65536
45 char stack[STACKSIZE];
57 * If the test fails, we are very likely to crash
58 * without the opportunity to report
60 nself = (void *)pthread_self();
61 printf("after swapcontext self = %p\n", nself);
63 ATF_REQUIRE_EQ(oself, nself);
64 printf("Test succeeded\n");
66 ATF_REQUIRE(swapcontext(&nctx, &octx));
76 nctx.uc_stack.ss_sp = stack;
77 nctx.uc_stack.ss_size = sizeof(stack);
79 makecontext(&nctx, (void *)*swapfunc, 0);
81 oself = (void *)pthread_self();
82 printf("before swapcontext self = %p\n", oself);
83 ATF_REQUIRE_MSG(swapcontext(&octx, &nctx) != -1, "swapcontext failed: %s",
92 ATF_TC_HEAD(swapcontext1, tc)
94 atf_tc_set_md_var(tc, "descr", "Testing if swapcontext() "
95 "alters pthread_self()");
97 ATF_TC_BODY(swapcontext1, tc)
101 #if defined(__FreeBSD__) && defined(__mips__)
103 * MIPS modifies TLS pointer in set_mcontext(), so
104 * swapping contexts obtained from different threads
105 * gives us different pthread_self() return value.
107 atf_tc_skip("Platform is not supported.");
110 oself = (void *)&val1;
111 nself = (void *)&val2;
113 printf("Testing if swapcontext() alters pthread_self()\n");
115 ATF_REQUIRE_MSG(getcontext(&nctx) != -1, "getcontext failed: %s",
117 PTHREAD_REQUIRE(pthread_create(&thread, NULL, threadfunc, NULL));
118 PTHREAD_REQUIRE(pthread_join(thread, NULL));
123 ATF_TP_ADD_TC(tp, swapcontext1);
125 return atf_no_error();