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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [gdb/] [testsuite/] [gdb.threads/] [current-lwp-dead.c] - Blame information for rev 330

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1 330 jeremybenn
/* This testcase is part of GDB, the GNU debugger.
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   Copyright 2009, 2010 Free Software Foundation, Inc.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.
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   Do not use threads as we need to exploit a bug in LWP code masked by the
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   threads code otherwise.
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   INFERIOR_PTID must point to exited LWP.  Here we use the initial LWP as it
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   is automatically INFERIOR_PTID for GDB.
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   Finally we need to call target_resume (RESUME_ALL, ...) which we invoke by
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   NEW_THREAD_EVENT (called from the new LWP as initial LWP is exited now).  */
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#define _GNU_SOURCE
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#include <sched.h>
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#include <assert.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <features.h>
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#ifdef __UCLIBC__
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#if !(defined(__UCLIBC_HAS_MMU__) || defined(__ARCH_HAS_MMU__))
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#define HAS_NOMMU
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#endif
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#endif
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#define STACK_SIZE 0x1000
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static int
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fn_return (void *unused)
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{
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  return 0;      /* at-fn_return */
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}
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static int
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fn (void *unused)
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{
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  int i;
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  unsigned char *stack;
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  int new_pid;
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  i = sleep (1);
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  assert (i == 0);
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  stack = malloc (STACK_SIZE);
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  assert (stack != NULL);
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  new_pid = clone (fn_return, stack + STACK_SIZE, CLONE_FILES
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#if defined(__UCLIBC__) && defined(HAS_NOMMU)
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                   | CLONE_VM
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#endif /* defined(__UCLIBC__) && defined(HAS_NOMMU) */
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                   , NULL, NULL, NULL, NULL);
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  assert (new_pid > 0);
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  return 0;
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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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  unsigned char *stack;
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  int new_pid;
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  stack = malloc (STACK_SIZE);
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  assert (stack != NULL);
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  new_pid = clone (fn, stack + STACK_SIZE, CLONE_FILES
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#if defined(__UCLIBC__) && defined(HAS_NOMMU)
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                   | CLONE_VM
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#endif /* defined(__UCLIBC__) && defined(HAS_NOMMU) */
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                   , NULL, NULL, NULL, NULL);
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  assert (new_pid > 0);
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  return 0;
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}

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