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[PATCH 10/19] Remove usages of find_inferior calling not_stopped_callback
- From: Simon Marchi <simon dot marchi at ericsson dot com>
- To: <gdb-patches at sourceware dot org>
- Cc: Simon Marchi <simon dot marchi at polymtl dot ca>
- Date: Mon, 20 Nov 2017 11:34:34 -0500
- Subject: [PATCH 10/19] Remove usages of find_inferior calling not_stopped_callback
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From: Simon Marchi <simon.marchi@polymtl.ca>
Replace with find_thread. Writing a lambda inline in directly in the if
conditions would be a bit messy, so I chose to assign them to variables
instead.
gdb/gdbserver/ChangeLog:
* linux-low.c (not_stopped_callback): Return bool, take filter
argument directly.
(linux_wait_for_event_filtered): Use find_thread.
(linux_wait_1): Likewise.
---
gdb/gdbserver/linux-low.c | 39 ++++++++++++++++++++-------------------
1 file changed, 20 insertions(+), 19 deletions(-)
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 08f7f90..85d5572 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -1919,23 +1919,18 @@ check_zombie_leaders (void)
});
}
-/* Callback for `find_inferior'. Returns the first LWP that is not
- stopped. ARG is a PTID filter. */
+/* Callback for `find_thread'. Returns the first LWP that is not
+ stopped. */
-static int
-not_stopped_callback (thread_info *thread, void *arg)
+static bool
+not_stopped_callback (thread_info *thread, ptid_t filter)
{
- struct lwp_info *lwp;
- ptid_t filter = *(ptid_t *) arg;
-
- if (!ptid_match (ptid_of (thread), filter))
- return 0;
+ if (!thread->id.matches (filter))
+ return false;
- lwp = get_thread_lwp (thread);
- if (!lwp->stopped)
- return 1;
+ lwp_info *lwp = get_thread_lwp (thread);
- return 0;
+ return !lwp->stopped;
}
/* Increment LWP's suspend count. */
@@ -2762,6 +2757,11 @@ linux_wait_for_event_filtered (ptid_t wait_ptid, ptid_t filter_ptid,
until all other threads in the thread group are. */
check_zombie_leaders ();
+ auto not_stopped = [&] (thread_info *thread)
+ {
+ return not_stopped_callback (thread, wait_ptid);
+ };
+
/* If there are no resumed children left in the set of LWPs we
want to wait for, bail. We can't just block in
waitpid/sigsuspend, because lwps might have been left stopped
@@ -2769,9 +2769,7 @@ linux_wait_for_event_filtered (ptid_t wait_ptid, ptid_t filter_ptid,
their status to change (which would only happen if we resumed
them). Even if WNOHANG is set, this return code is preferred
over 0 (below), as it is more detailed. */
- if ((find_inferior (&all_threads,
- not_stopped_callback,
- &wait_ptid) == NULL))
+ if (find_thread (not_stopped) == NULL)
{
if (debug_threads)
debug_printf ("LLW: exit (no unwaited-for LWP)\n");
@@ -3164,12 +3162,15 @@ linux_wait_1 (ptid_t ptid,
return status_pending_p_callback (thread, minus_one_ptid);
};
+ auto not_stopped = [&] (thread_info *thread)
+ {
+ return not_stopped_callback (thread, minus_one_ptid);
+ };
+
/* Find a resumed LWP, if any. */
if (find_thread (status_pending_p_any) != NULL)
any_resumed = 1;
- else if ((find_inferior (&all_threads,
- not_stopped_callback,
- &minus_one_ptid) != NULL))
+ else if (find_thread (not_stopped) != NULL)
any_resumed = 1;
else
any_resumed = 0;
--
2.7.4