old-cross-binutils/gdb/testsuite/gdb.btrace/multi-thread-step.c

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record-btrace: add (reverse-)stepping support Provide to_resume and to_wait target methods for the btrace record target to allow reverse stepping and replay support. Replay is limited in the sense that only stepping and source correlation are supported. We do not record data and thus can not show variables. Non-stop mode is not working. Do not allow record-btrace in non-stop mode. 2014-01-16 Markus Metzger <markus.t.metzger@intel.com> * btrace.h (btrace_thread_flag): New. (struct btrace_thread_info) <flags>: New. * record-btrace.c (record_btrace_resume_thread) (record_btrace_find_thread_to_move, btrace_step_no_history) (btrace_step_stopped, record_btrace_start_replaying) (record_btrace_step_thread, record_btrace_decr_pc_after_break) (record_btrace_find_resume_thread): New. (record_btrace_resume, record_btrace_wait): Extend. (record_btrace_can_execute_reverse): New. (record_btrace_open): Fail in non-stop mode. (record_btrace_set_replay): Split into this, ... (record_btrace_stop_replaying): ... this, ... (record_btrace_clear_histories): ... and this. (init_record_btrace_ops): Init to_can_execute_reverse. * NEWS: Announce it. testsuite/ * gdb.btrace/delta.exp: Check reverse stepi. * gdb.btrace/tailcall.exp: Update. Add stepping tests. * gdb.btrace/finish.exp: New. * gdb.btrace/next.exp: New. * gdb.btrace/nexti.exp: New. * gdb.btrace/record_goto.c: Add comments. * gdb.btrace/step.exp: New. * gdb.btrace/stepi.exp: New. * gdb.btrace/multi-thread-step.c: New. * gdb.btrace/multi-thread-step.exp: New. * gdb.btrace/rn-dl-bind.c: New. * gdb.btrace/rn-dl-bind.exp: New. * gdb.btrace/data.c: New. * gdb.btrace/data.exp: New. * gdb.btrace/Makefile.in (EXECUTABLES): Add new. doc/ * gdb.texinfo: Document limited reverse/replay support for target record-btrace.
2013-05-06 14:04:46 +00:00
/* This testcase is part of GDB, the GNU debugger.
Copyright 2013 Free Software Foundation, Inc.
Contributed by Intel Corp. <markus.t.metzger@intel.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <pthread.h>
static pthread_barrier_t barrier;
static int global;
static void *
test (void *arg)
{
pthread_barrier_wait (&barrier);
global = 42; /* bp.1 */
pthread_barrier_wait (&barrier);
global = 42; /* bp.2 */
return arg;
}
int
main (void)
{
pthread_t th;
pthread_barrier_init (&barrier, NULL, 2);
pthread_create (&th, NULL, test, NULL);
test (NULL);
pthread_join (th, NULL);
pthread_barrier_destroy (&barrier);
return 0; /* bp.3 */
}