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76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2009-2020 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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Test that GDB doesn't lose an event for a thread it didn't know
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about, until an event is reported for it. */
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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 <stdlib.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/syscall.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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tkill (int lwpid, int signo)
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{
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return syscall (__NR_tkill, lwpid, signo);
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}
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static pid_t
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gettid (void)
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{
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return syscall (__NR_gettid);
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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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tkill (gettid (), SIGUSR1);
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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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