mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-22 07:37:38 +01:00
b0406d0a2a
to create NTHREADS threads. With NTHREADS==128 and the stack-size rlimit set to "unlimited", the test is otherwise likely to fail because on ia64 it will default to using 32MB of stack per thread. (Logical change 1.291)
132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2003-2005 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/* Verify that multi-threaded concurrent unwinding works as expected. */
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <libunwind.h>
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#include <limits.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define NTHREADS 128
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#define panic(args...) \
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do { fprintf (stderr, args); ++nerrors; } while (0)
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int verbose;
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int nerrors;
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int got_usr1, got_usr2;
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char *sigusr1_sp;
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void
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handler (int sig)
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{
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unw_word_t ip;
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unw_context_t uc;
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unw_cursor_t c;
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int ret;
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unw_getcontext (&uc);
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unw_init_local (&c, &uc);
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do
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{
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unw_get_reg (&c, UNW_REG_IP, &ip);
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if (verbose)
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printf ("%lx: IP=%lx\n", (long) pthread_self (), (unsigned long) ip);
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}
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while ((ret = unw_step (&c)) > 0);
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if (ret < 0)
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panic ("unw_step() returned %d\n", ret);
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}
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void *
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worker (void *arg)
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{
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signal (SIGUSR1, handler);
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if (verbose)
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printf ("sending SIGUSR1\n");
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pthread_kill (pthread_self (), SIGUSR1);
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return NULL;
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}
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static void
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doit (void)
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{
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pthread_t th[NTHREADS];
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pthread_attr_t attr;
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int i;
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pthread_attr_init (&attr);
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pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN + 64*1024);
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for (i = 0; i < NTHREADS; ++i)
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if (pthread_create (th + i, &attr, worker, NULL))
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{
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fprintf (stderr, "FAILURE: Failed to create %u threads "
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"(after %u threads)\n",
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NTHREADS, i);
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exit (-1);
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}
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for (i = 0; i < NTHREADS; ++i)
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pthread_join (th[i], NULL);
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}
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int
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main (int argc, char **argv)
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{
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if (argc > 1)
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verbose = 1;
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if (verbose)
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printf ("Caching: none\n");
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unw_set_caching_policy (unw_local_addr_space, UNW_CACHE_NONE);
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doit ();
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if (verbose)
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printf ("Caching: global\n");
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unw_set_caching_policy (unw_local_addr_space, UNW_CACHE_GLOBAL);
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if (verbose)
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printf ("Caching: per-thread\n");
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unw_set_caching_policy (unw_local_addr_space, UNW_CACHE_PER_THREAD);
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if (nerrors)
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{
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fprintf (stderr, "FAILURE: detected %d errors\n", nerrors);
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exit (-1);
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}
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if (verbose)
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printf ("SUCCESS\n");
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return 0;
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}
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