120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
/* edtest.c -- Test for libbacktrace storage allocation stress handling
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Copyright (C) 2017-2021 Free Software Foundation, Inc.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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(1) Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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(2) Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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(3) The name of the author may not be used to
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endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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#include "config.h"
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include "backtrace.h"
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#include "backtrace-supported.h"
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#include "internal.h"
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#include "testlib.h"
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static int test1 (void) __attribute__ ((noinline, noclone, unused));
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extern int f2 (int);
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extern int f3 (int, int);
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static int
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test1 (void)
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{
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/* Returning a value here and elsewhere avoids a tailcall which
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would mess up the backtrace. */
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return f2 (__LINE__) + 1;
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}
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int
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f3 (int f1line, int f2line)
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{
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struct info all[20];
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struct bdata data;
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int f3line;
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int i;
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data.all = &all[0];
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data.index = 0;
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data.max = 20;
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data.failed = 0;
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f3line = __LINE__ + 1;
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i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
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if (i != 0)
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{
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fprintf (stderr, "test1: unexpected return value %d\n", i);
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data.failed = 1;
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}
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if (data.index < 3)
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{
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fprintf (stderr,
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"test1: not enough frames; got %zu, expected at least 3\n",
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data.index);
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data.failed = 1;
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}
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check ("test1", 0, all, f3line, "f3", "edtest.c", &data.failed);
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check ("test1", 1, all, f2line, "f2", "edtest2_build.c", &data.failed);
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check ("test1", 2, all, f1line, "test1", "edtest.c", &data.failed);
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printf ("%s: backtrace_full alloc stress\n", data.failed ? "FAIL" : "PASS");
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if (data.failed)
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++failures;
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return failures;
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}
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int
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main (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
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{
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state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
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error_callback_create, NULL);
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// Grab the storage allocation lock prior to doing anything interesting.
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// The intent here is to insure that the backtrace_alloc code is forced
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// to always call mmap() for new memory as opposed to reusing previously
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// allocated memory from the free list. Doing things this way helps
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// simulate what you might see in a multithreaded program in which there
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// are racing calls to the allocator.
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struct backtrace_state *state_internal =
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(struct backtrace_state *) state;
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state_internal->lock_alloc = 1;
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// Kick off the test
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test1();
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exit (failures > 0 ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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