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- /* ttest.c -- Test for libbacktrace library
- Copyright (C) 2017-2022 Free Software Foundation, Inc.
- Written by Ian Lance Taylor, Google.
- 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.
- (3) The name of the author may not be used to
- endorse or promote products derived from this software without
- specific prior written permission.
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */
- /* Test using the libbacktrace library from multiple threads. */
- #include <assert.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <pthread.h>
- #include "filenames.h"
- #include "backtrace.h"
- #include "backtrace-supported.h"
- #include "testlib.h"
- static int f2 (int) __attribute__ ((noinline));
- static int f3 (int, int) __attribute__ ((noinline));
- /* Test that a simple backtrace works. This is called via
- pthread_create. It returns the number of failures, as void *. */
- static void *
- test1_thread (void *arg ATTRIBUTE_UNUSED)
- {
- /* Returning a value here and elsewhere avoids a tailcall which
- would mess up the backtrace. */
- return (void *) (uintptr_t) (f2 (__LINE__) - 2);
- }
- static int
- f2 (int f1line)
- {
- return f3 (f1line, __LINE__) + 2;
- }
- static int
- f3 (int f1line, int f2line)
- {
- struct info all[20];
- struct bdata data;
- int f3line;
- int i;
- data.all = &all[0];
- data.index = 0;
- data.max = 20;
- data.failed = 0;
- f3line = __LINE__ + 1;
- i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
- if (i != 0)
- {
- fprintf (stderr, "test1: unexpected return value %d\n", i);
- data.failed = 1;
- }
- if (data.index < 3)
- {
- fprintf (stderr,
- "test1: not enough frames; got %zu, expected at least 3\n",
- data.index);
- data.failed = 1;
- }
- check ("test1", 0, all, f3line, "f3", "ttest.c", &data.failed);
- check ("test1", 1, all, f2line, "f2", "ttest.c", &data.failed);
- check ("test1", 2, all, f1line, "test1_thread", "ttest.c", &data.failed);
- return data.failed;
- }
- /* Run the test with 10 threads simultaneously. */
- #define THREAD_COUNT 10
- static void test1 (void) __attribute__ ((unused));
- static void
- test1 (void)
- {
- pthread_t atid[THREAD_COUNT];
- int i;
- int errnum;
- int this_fail;
- void *ret;
- for (i = 0; i < THREAD_COUNT; i++)
- {
- errnum = pthread_create (&atid[i], NULL, test1_thread, NULL);
- if (errnum != 0)
- {
- fprintf (stderr, "pthread_create %d: %s\n", i, strerror (errnum));
- exit (EXIT_FAILURE);
- }
- }
- this_fail = 0;
- for (i = 0; i < THREAD_COUNT; i++)
- {
- errnum = pthread_join (atid[i], &ret);
- if (errnum != 0)
- {
- fprintf (stderr, "pthread_join %d: %s\n", i, strerror (errnum));
- exit (EXIT_FAILURE);
- }
- this_fail += (int) (uintptr_t) ret;
- }
- printf ("%s: threaded backtrace_full noinline\n", this_fail > 0 ? "FAIL" : "PASS");
- failures += this_fail;
- }
- int
- main (int argc ATTRIBUTE_UNUSED, char **argv)
- {
- state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
- error_callback_create, NULL);
- #if BACKTRACE_SUPPORTED
- #if BACKTRACE_SUPPORTS_THREADS
- test1 ();
- #endif
- #endif
- exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
- }
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