145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Copyright (c) 2024, Rob Norris <robn@despairlabs.com>
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*/
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#include <assert.h>
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#include <pthread.h>
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#if defined(__linux__)
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#include <errno.h>
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#include <sys/prctl.h>
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#ifdef HAVE_GETTID
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#define libspl_gettid() gettid()
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#else
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#include <sys/syscall.h>
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#define libspl_gettid() ((pid_t)syscall(__NR_gettid))
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#endif
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#define libspl_getprogname() (program_invocation_short_name)
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#define libspl_getthreadname(buf, len) \
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prctl(PR_GET_NAME, (unsigned long)(buf), 0, 0, 0)
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#elif defined(__FreeBSD__)
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#include <pthread_np.h>
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#define libspl_gettid() pthread_getthreadid_np()
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#define libspl_getprogname() getprogname()
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#define libspl_getthreadname(buf, len) \
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pthread_getname_np(pthread_self(), buf, len);
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#endif
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#if defined(HAVE_LIBUNWIND)
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#define UNW_LOCAL_ONLY
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#include <libunwind.h>
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static inline void
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libspl_dump_backtrace(void)
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{
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unw_context_t uc;
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unw_cursor_t cp;
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unw_word_t ip, off;
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char funcname[128];
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#ifdef HAVE_LIBUNWIND_ELF
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char objname[128];
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unw_word_t objoff;
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#endif
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fprintf(stderr, "Call trace:\n");
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unw_getcontext(&uc);
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unw_init_local(&cp, &uc);
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while (unw_step(&cp) > 0) {
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unw_get_reg(&cp, UNW_REG_IP, &ip);
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unw_get_proc_name(&cp, funcname, sizeof (funcname), &off);
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#ifdef HAVE_LIBUNWIND_ELF
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unw_get_elf_filename(&cp, objname, sizeof (objname), &objoff);
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fprintf(stderr, " [0x%08lx] %s+0x%2lx (in %s +0x%2lx)\n",
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ip, funcname, off, objname, objoff);
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#else
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fprintf(stderr, " [0x%08lx] %s+0x%2lx\n", ip, funcname, off);
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#endif
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}
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}
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#elif defined(HAVE_BACKTRACE)
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#include <execinfo.h>
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static inline void
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libspl_dump_backtrace(void)
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{
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void *btptrs[100];
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size_t nptrs = backtrace(btptrs, 100);
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char **bt = backtrace_symbols(btptrs, nptrs);
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fprintf(stderr, "Call trace:\n");
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for (size_t i = 0; i < nptrs; i++)
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fprintf(stderr, " %s\n", bt[i]);
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free(bt);
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}
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#else
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#define libspl_dump_backtrace()
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#endif
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static boolean_t libspl_assert_ok = B_FALSE;
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void
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libspl_set_assert_ok(boolean_t val)
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{
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libspl_assert_ok = val;
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}
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static pthread_mutex_t assert_lock = PTHREAD_MUTEX_INITIALIZER;
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/* printf version of libspl_assert */
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void
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libspl_assertf(const char *file, const char *func, int line,
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const char *format, ...)
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{
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pthread_mutex_lock(&assert_lock);
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va_list args;
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char tname[64];
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libspl_getthreadname(tname, sizeof (tname));
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fprintf(stderr, "ASSERT at %s:%d:%s()\n", file, line, func);
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va_start(args, format);
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vfprintf(stderr, format, args);
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va_end(args);
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fprintf(stderr, "\n"
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" PID: %-8u COMM: %s\n"
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" TID: %-8u NAME: %s\n",
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getpid(), libspl_getprogname(),
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libspl_gettid(), tname);
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libspl_dump_backtrace();
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#if !__has_feature(attribute_analyzer_noreturn) && !defined(__COVERITY__)
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if (libspl_assert_ok) {
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pthread_mutex_unlock(&assert_lock);
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return;
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}
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#endif
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abort();
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}
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