diff options
Diffstat (limited to 'gdb/remote.c')
| -rw-r--r-- | gdb/remote.c | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/gdb/remote.c b/gdb/remote.c index cd85fd5..98d3f2a 100644 --- a/gdb/remote.c +++ b/gdb/remote.c @@ -2762,9 +2762,7 @@ remote_update_thread_list (struct target_ops *ops) struct remote_state *rs = get_remote_state (); struct threads_listing_context context; struct cleanup *old_chain; - - /* Delete GDB-side threads no longer found on the target. */ - prune_threads (); + int got_list = 0; context.items = NULL; old_chain = make_cleanup (clear_threads_listing_context, &context); @@ -2778,8 +2776,31 @@ remote_update_thread_list (struct target_ops *ops) { int i; struct thread_item *item; + struct thread_info *tp, *tmp; + + got_list = 1; + + /* CONTEXT now holds the current thread list on the remote + target end. Delete GDB-side threads no longer found on the + target. */ + ALL_NON_EXITED_THREADS_SAFE (tp, tmp) + { + for (i = 0; + VEC_iterate (thread_item_t, context.items, i, item); + ++i) + { + if (ptid_equal (item->ptid, tp->ptid)) + break; + } - /* Now add threads we don't know about yet to our list. */ + if (i == VEC_length (thread_item_t, context.items)) + { + /* Not found. */ + delete_thread (tp->ptid); + } + } + + /* And now add threads we don't know about yet to our list. */ for (i = 0; VEC_iterate (thread_item_t, context.items, i, item); ++i) @@ -2803,6 +2824,15 @@ remote_update_thread_list (struct target_ops *ops) } } + if (!got_list) + { + /* If no thread listing method is supported, then query whether + each known thread is alive, one by one, with the T packet. + If the target doesn't support threads at all, then this is a + no-op. See remote_thread_alive. */ + prune_threads (); + } + do_cleanups (old_chain); } |