minix/tests/lib/libexecinfo/t_backtrace.c

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/* $NetBSD: t_backtrace.c,v 1.10 2013/08/16 11:57:15 martin Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_backtrace.c,v 1.10 2013/08/16 11:57:15 martin Exp $");
#include <atf-c.h>
#include <atf-c/config.h>
#include <string.h>
#include <stdlib.h>
#include <execinfo.h>
#include <unistd.h>
#ifndef __arraycount
#define __arraycount(a) (sizeof(a) / sizeof(a[0]))
#endif
void myfunc3(size_t ncalls);
void myfunc2(size_t ncalls);
void myfunc1(size_t origcalls, volatile size_t ncalls);
void myfunc(size_t ncalls);
volatile int prevent_inline;
void
myfunc3(size_t ncalls)
{
static const char *top[] = { "myfunc", "atfu_backtrace_fmt_basic_body",
"atf_tc_run", "atf_tp_run", "atf_tp_main", "main", "___start" };
static bool optional_frame[] = { false, false, false, true, false,
false, true };
size_t j, nptrs, min_frames, max_frames;
void *buffer[ncalls + 10];
char **strings;
__CTASSERT(__arraycount(top) == __arraycount(optional_frame));
min_frames = 0;
max_frames = 0;
for (j = 0; j < __arraycount(optional_frame); ++j) {
if (!optional_frame[j])
++min_frames;
++max_frames;
}
nptrs = backtrace(buffer, __arraycount(buffer));
ATF_REQUIRE(nptrs >= ncalls + 2 + min_frames);
ATF_REQUIRE(nptrs <= ncalls + 2 + max_frames);
strings = backtrace_symbols_fmt(buffer, nptrs, "%n");
ATF_CHECK(strings != NULL);
ATF_CHECK_STREQ(strings[0], "myfunc3");
ATF_CHECK_STREQ(strings[1], "myfunc2");
for (j = 2; j < ncalls + 2; j++)
ATF_CHECK_STREQ(strings[j], "myfunc1");
for (size_t i = 0; j < nptrs; i++, j++) {
if (optional_frame[i] && strcmp(strings[j], top[i])) {
--i;
continue;
}
ATF_CHECK_STREQ(strings[j], top[i]);
}
free(strings);
if (prevent_inline)
vfork();
}
void
myfunc2(size_t ncalls)
{
myfunc3(ncalls);
if (prevent_inline)
vfork();
}
void
myfunc1(size_t origcalls, volatile size_t ncalls)
{
if (ncalls > 1)
myfunc1(origcalls, ncalls - 1);
else
myfunc2(origcalls);
if (prevent_inline)
vfork();
}
void
myfunc(size_t ncalls)
{
myfunc1(ncalls, ncalls);
if (prevent_inline)
vfork();
}
ATF_TC(backtrace_fmt_basic);
ATF_TC_HEAD(backtrace_fmt_basic, tc)
{
atf_tc_set_md_var(tc, "descr", "Test backtrace_fmt(3)");
}
ATF_TC_BODY(backtrace_fmt_basic, tc)
{
myfunc(12);
if (prevent_inline)
vfork();
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, backtrace_fmt_basic);
return atf_no_error();
}