diff options
Diffstat (limited to 'gdb/gdbserver/linux-low.c')
| -rw-r--r-- | gdb/gdbserver/linux-low.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c index bbb0693..143a2ed 100644 --- a/gdb/gdbserver/linux-low.c +++ b/gdb/gdbserver/linux-low.c @@ -172,8 +172,20 @@ pull_pid_from_list (struct simple_pid_list **listp, int pid, int *statusp) return 0; } -/* FIXME this is a bit of a hack, and could be removed. */ -int stopping_threads; +enum stopping_threads_kind + { + /* Not stopping threads presently. */ + NOT_STOPPING_THREADS, + + /* Stopping threads. */ + STOPPING_THREADS, + + /* Stopping and suspending threads. */ + STOPPING_AND_SUSPENDING_THREADS + }; + +/* This is set while stop_all_lwps is in effect. */ +enum stopping_threads_kind stopping_threads = NOT_STOPPING_THREADS; /* FIXME make into a target method? */ int using_threads = 1; @@ -461,12 +473,17 @@ handle_extended_wait (struct lwp_info *event_child, int wstat) before calling linux_resume_one_lwp. */ new_lwp->stopped = 1; + /* If we're suspending all threads, leave this one suspended + too. */ + if (stopping_threads == STOPPING_AND_SUSPENDING_THREADS) + new_lwp->suspended = 1; + /* Normally we will get the pending SIGSTOP. But in some cases we might get another signal delivered to the group first. If we do get another signal, be sure not to lose it. */ if (WSTOPSIG (status) == SIGSTOP) { - if (stopping_threads) + if (stopping_threads != NOT_STOPPING_THREADS) new_lwp->stop_pc = get_stop_pc (new_lwp); else linux_resume_one_lwp (new_lwp, 0, 0, NULL); @@ -475,7 +492,7 @@ handle_extended_wait (struct lwp_info *event_child, int wstat) { new_lwp->stop_expected = 1; - if (stopping_threads) + if (stopping_threads != NOT_STOPPING_THREADS) { new_lwp->stop_pc = get_stop_pc (new_lwp); new_lwp->status_pending_p = 1; @@ -1815,7 +1832,7 @@ linux_wait_for_event (ptid_t ptid, int *wstat, int options) { requested_child = find_lwp_pid (ptid); - if (!stopping_threads + if (stopping_threads == NOT_STOPPING_THREADS && requested_child->status_pending_p && requested_child->collecting_fast_tracepoint) { @@ -1963,7 +1980,7 @@ linux_wait_for_event (ptid_t ptid, int *wstat, int options) event_child->stop_expected = 0; should_stop = (current_inferior->last_resume_kind == resume_stop - || stopping_threads); + || stopping_threads != NOT_STOPPING_THREADS); if (!should_stop) { @@ -3072,14 +3089,19 @@ lwp_running (struct inferior_list_entry *entry, void *data) static void stop_all_lwps (int suspend, struct lwp_info *except) { - stopping_threads = 1; + /* Should not be called recursively. */ + gdb_assert (stopping_threads == NOT_STOPPING_THREADS); + + stopping_threads = (suspend + ? STOPPING_AND_SUSPENDING_THREADS + : STOPPING_THREADS); if (suspend) find_inferior (&all_lwps, suspend_and_send_sigstop_callback, except); else find_inferior (&all_lwps, send_sigstop_callback, except); for_each_inferior (&all_lwps, wait_for_sigstop); - stopping_threads = 0; + stopping_threads = NOT_STOPPING_THREADS; } /* Resume execution of the inferior process. |