OpenE2K/binutils-gdb
12
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

2001-05-25 Michael Snyder <msnyder@redhat.com>

Browse Source 
* lin-lwp.c (lin_lwp_attach_lwp): Call stop_wait_callback,
	to consume the SIGSTOP generated by PTRACE_ATTACH.
	(stop_wait_callback): If a SIGTRAP or a SIGINT event is consumed,
	try again to get the SIGSTOP event.
	(lin_lwp_wait): Resume all threads when ignoring a signal.
	This will insure that newly attached threads get resumed.
This commit is contained in:
Michael Snyder 2001-05-30 22:58:37 +00:00
parent 6b3db54654
commit c4365b1915
2 changed files with 28 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gdb/ChangeLog
View File

@ -28,6 +28,12 @@
2001-05-25 Michael Snyder <msnyder@redhat.com>
* lin-lwp.c (lin_lwp_attach_lwp): Call stop_wait_callback,
to consume the SIGSTOP generated by PTRACE_ATTACH.
(stop_wait_callback): If a SIGTRAP or a SIGINT event is consumed,
try again to get the SIGSTOP event.
(lin_lwp_wait): Resume all threads when ignoring a signal.
This will insure that newly attached threads get resumed.
* lin-lwp.c (stop_wait_callback): Discard redundant SIGINT events.
* remote.c (remote_write_bytes): Update 'p' packet pointer.

26
gdb/lin-lwp.c
View File

@ -327,7 +327,10 @@ lin_lwp_attach_lwp (ptid_t ptid, int verbose)
lp = add_lwp (ptid);
if (is_cloned (ptid))
lp->signalled = 1;
{
lp->signalled = 1;
stop_wait_callback (lp, NULL);
}
}
static void
@ -370,6 +373,7 @@ detach_callback (struct lwp_info *lp, void *data)
strerror (errno));
lp->stopped = 0;
lp->signalled = 0;
lp->status = 0;
stop_wait_callback (lp, NULL);
@ -481,7 +485,7 @@ lin_lwp_resume (ptid_t ptid, int step, enum target_signal signo)
resume_all = (PIDGET (ptid) == -1) || !step;
/* If PID is -1, it's the current inferior that should be
handled special. */
handled specially. */
if (PIDGET (ptid) == -1)
ptid = inferior_ptid;
@ -544,6 +548,7 @@ stop_wait_callback (struct lwp_info *lp, void *data)
pid_t pid;
int status;
get_another_event:
gdb_assert (lp->status == 0);
pid = waitpid (GET_LWP (lp->ptid), &status,
@ -609,6 +614,10 @@ stop_wait_callback (struct lwp_info *lp, void *data)
write_pc_pid (read_pc_pid (pid_to_ptid (pid))
- DECR_PC_AFTER_BREAK,
pid_to_ptid (pid));
/* Now resume this LWP and get the SIGSTOP event. */
ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0, 0);
goto get_another_event;
}
else if (WSTOPSIG (status) == SIGINT &&
signal_pass_state (SIGINT) == 0)
@ -617,7 +626,10 @@ stop_wait_callback (struct lwp_info *lp, void *data)
(in the case where ^C/BREAK is typed at the tty/console),
just ignore all SIGINT events from all lwp's except for
the one that was caught by lin_lwp_wait. */
; /* Don't save. Signal will disappear into oblivion. */
/* Now resume this LWP and get the SIGSTP event. */
ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0, 0);
goto get_another_event;
}
else
{
@ -868,8 +880,14 @@ lin_lwp_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
&& signal_print_state (signo) == 0
&& signal_pass_state (signo) == 1)
{
child_resume (pid_to_ptid (GET_LWP (lp->ptid)), lp->step, signo);
/* First mark this LWP as "not stopped", so that
resume_callback will not resume it. */
lp->stopped = 0;
/* Resume all threads except this one
(mainly to get the newly attached ones). */
iterate_over_lwps (resume_callback, NULL);
/* Now resume this thread, forwarding the signal to it. */
child_resume (pid_to_ptid (GET_LWP (lp->ptid)), lp->step, signo);
status = 0;
goto retry;
}