1 /* 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (C) 2019 Andrew Gierth 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 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. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * Though this file is initially distributed under the 2-clause BSD license, 28 * the author grants permission for its redistribution under alternative 29 * licenses as set forth at <https://rhodiumtoad.github.io/RELICENSE.txt>. 30 * This paragraph and the RELICENSE.txt file are not part of the license and 31 * may be omitted in redistributions. 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <stdarg.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <dlfcn.h> 43 44 #include <atf-c.h> 45 46 typedef void (modfunc_t)(int op); 47 48 /* 49 * Minimal test case for PR 235158; mutual dependencies between jemalloc and 50 * libthr causing issues in thread creation. Specifically to this case, libthr 51 * uses calloc to initialize pthread mutexes, and jemalloc uses pthread mutexes. 52 * 53 * Deferred initialization provided by jemalloc proved to be fragile, causing 54 * issues like in the referenced PR where thread creation in a shared object 55 * loaded via dlopen(3) would stall unless the calling application also linked 56 * against pthread. 57 */ 58 ATF_TC(maintc); 59 ATF_TC_HEAD(maintc, tc) 60 { 61 62 atf_tc_set_md_var(tc, "timeout", "3"); 63 } 64 65 ATF_TC_BODY(maintc, tc) 66 { 67 char *libpath; 68 modfunc_t *func; 69 void *mod_handle; 70 const char *srcdir; 71 dlfunc_t rawfunc; 72 73 srcdir = atf_tc_get_config_var(tc, "srcdir"); 74 if (asprintf(&libpath, "%s/dynthr_mod.so", srcdir) < 0) 75 atf_tc_fail("failed to construct path to libthr"); 76 mod_handle = dlopen(libpath, RTLD_LOCAL); 77 free(libpath); 78 if (mod_handle == NULL) 79 atf_tc_fail("failed to open dynthr_mod.so: %s", dlerror()); 80 rawfunc = dlfunc(mod_handle, "mod_main"); 81 if (rawfunc == NULL) 82 atf_tc_fail("failed to resolve function mod_main"); 83 func = (modfunc_t *)rawfunc; 84 func(1); 85 func(0); 86 } 87 88 ATF_TP_ADD_TCS(tp) 89 { 90 91 ATF_TP_ADD_TC(tp, maintc); 92 return (atf_no_error()); 93 } 94