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[PATCH 1/6] Move notif_queue to remote_state
- From: Yao Qi <yao at codesourcery dot com>
- To: <gdb-patches at sourceware dot org>
- Date: Mon, 19 Aug 2013 09:55:06 +0800
- Subject: [PATCH 1/6] Move notif_queue to remote_state
- References: <1376877311-4135-1-git-send-email-yao at codesourcery dot com>
This patch is to move global 'notif_queue' to 'struct remote_state', as
a follow up to Tom's patch series '[PATCH 00/16] clean up remote.c state'
<http://sourceware.org/ml/gdb-patches/2013-06/msg00605.html>
gdb:
* remote-notif.c (DECLARE_QUEUE_P): Remove.
(notif_queue): Remove.
(remote_notif_process): Add one parameter 'notif_queue'.
Update comments. Callers update.
(remote_notif_register_async_event_handler): Add parameter
'notif_queue'. Pass 'notif_queue' to
create_async_event_handler.
(handle_notification): Add parameter 'notif_queue'. Update
comments. Callers update.
(remote_notif_state): New function.
(_initialize_notif): Remove code to allocate queue.
* remote-notif.h (DECLARE_QUEUE_P): Moved from remote-notif.c.
(struct remote_notif_state): New.
(handle_notification): Update declaration.
(remote_notif_register_async_event_handler): Likewise.
(remote_notif_process): Likewise.
(remote_notif_state): Declare.
* remote.c (struct remote_state) <notif_state>: New field.
(remote_open_1): Initialize rs->notif_state and pass it to
remote_notif_register_async_event_handler.
---
gdb/remote-notif.c | 40 ++++++++++++++++++++++++----------------
gdb/remote-notif.h | 20 +++++++++++++++++---
gdb/remote.c | 12 ++++++++----
3 files changed, 49 insertions(+), 23 deletions(-)
diff --git a/gdb/remote-notif.c b/gdb/remote-notif.c
index c4bfd8d..8b69f2f 100644
--- a/gdb/remote-notif.c
+++ b/gdb/remote-notif.c
@@ -91,21 +91,19 @@ remote_notif_parse (struct notif_client *nc, char *buf)
return event;
}
-DECLARE_QUEUE_P (notif_client_p);
DEFINE_QUEUE_P (notif_client_p);
-static QUEUE(notif_client_p) *notif_queue;
-
-/* Process notifications one by one. EXCEPT is not expected in
- the queue. */
+/* Process notifications in NOTIF_QUEUE one by one. EXCEPT is not expected
+ in the queue. */
void
-remote_notif_process (struct notif_client *except)
+remote_notif_process (struct remote_notif_state *state,
+ struct notif_client *except)
{
- while (!QUEUE_is_empty (notif_client_p, notif_queue))
+ while (!QUEUE_is_empty (notif_client_p, state->notif_queue))
{
struct notif_client *nc = QUEUE_deque (notif_client_p,
- notif_queue);
+ state->notif_queue);
gdb_assert (nc != except);
@@ -118,7 +116,7 @@ static void
remote_async_get_pending_events_handler (gdb_client_data data)
{
gdb_assert (non_stop);
- remote_notif_process (NULL);
+ remote_notif_process (data, NULL);
}
/* Asynchronous signal handle registered as event loop source for when
@@ -131,11 +129,11 @@ static struct async_event_handler *remote_async_get_pending_events_token;
/* Register async_event_handler for notification. */
void
-remote_notif_register_async_event_handler (void)
+remote_notif_register_async_event_handler (struct remote_notif_state *state)
{
remote_async_get_pending_events_token
= create_async_event_handler (remote_async_get_pending_events_handler,
- NULL);
+ state);
}
/* Unregister async_event_handler for notification. */
@@ -147,10 +145,11 @@ remote_notif_unregister_async_event_handler (void)
delete_async_event_handler (&remote_async_get_pending_events_token);
}
-/* Remote notification handler. */
+/* Remote notification handler. Parse BUF, queue notification and
+ update STATE. */
void
-handle_notification (char *buf)
+handle_notification (struct remote_notif_state *state, char *buf)
{
struct notif_client *nc = NULL;
int i;
@@ -189,7 +188,7 @@ handle_notification (char *buf)
/* Notify the event loop there's a stop reply to acknowledge
and that there may be more events to fetch. */
- QUEUE_enque (notif_client_p, notif_queue, nc);
+ QUEUE_enque (notif_client_p, state->notif_queue, nc);
if (non_stop)
{
/* In non-stop, We mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
@@ -262,14 +261,23 @@ notif_xfree (struct notif_client *notif)
xfree (notif);
}
+/* Return an allocated remote_notif_state. */
+
+struct remote_notif_state *
+remote_notif_state (void)
+{
+ struct remote_notif_state *notif_state = xmalloc (sizeof (*notif_state));
+
+ notif_state->notif_queue = QUEUE_alloc (notif_client_p, notif_xfree);
+ return notif_state;
+}
+
/* -Wmissing-prototypes */
extern initialize_file_ftype _initialize_notif;
void
_initialize_notif (void)
{
- notif_queue = QUEUE_alloc (notif_client_p, notif_xfree);
-
add_setshow_boolean_cmd ("notification", no_class, ¬if_debug,
_("\
Set debugging of async remote notification."), _("\
diff --git a/gdb/remote-notif.h b/gdb/remote-notif.h
index da4fdea..05d2613 100644
--- a/gdb/remote-notif.h
+++ b/gdb/remote-notif.h
@@ -68,16 +68,30 @@ typedef struct notif_client
struct notif_event *pending_event;
} *notif_client_p;
+DECLARE_QUEUE_P (notif_client_p);
+
+/* State on remote async notification. */
+
+struct remote_notif_state
+{
+ /* Notification queue. */
+ QUEUE(notif_client_p) *notif_queue;
+};
+
void remote_notif_ack (struct notif_client *nc, char *buf);
struct notif_event *remote_notif_parse (struct notif_client *nc,
char *buf);
-void handle_notification (char *buf);
+void handle_notification (struct remote_notif_state *notif_state,
+ char *buf);
-void remote_notif_register_async_event_handler (void);
+void remote_notif_register_async_event_handler (struct remote_notif_state *);
void remote_notif_unregister_async_event_handler (void);
-void remote_notif_process (struct notif_client *except);
+void remote_notif_process (struct remote_notif_state *state,
+ struct notif_client *except);
+struct remote_notif_state *remote_notif_state (void);
+
extern struct notif_client notif_client_stop;
extern int notif_debug;
diff --git a/gdb/remote.c b/gdb/remote.c
index 5028451..e50623a 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -425,6 +425,9 @@ struct remote_state
threadref echo_nextthread;
threadref nextthread;
threadref resultthreadlist[MAXTHREADLISTRESULTS];
+
+ /* The state of remote notification. */
+ struct remote_notif_state *notif_state;
};
/* Private data that we'll store in (struct thread_info)->private. */
@@ -4337,7 +4340,8 @@ remote_open_1 (char *name, int from_tty,
remote_async_inferior_event_token
= create_async_event_handler (remote_async_inferior_event_handler,
NULL);
- remote_notif_register_async_event_handler ();
+ rs->notif_state = remote_notif_state ();
+ remote_notif_register_async_event_handler (rs->notif_state);
/* Reset the target state; these things will be queried either by
remote_query_supported or as they are needed. */
@@ -4931,7 +4935,7 @@ remote_resume (struct target_ops *ops,
before resuming inferior, because inferior was stopped and no RSP
traffic at that moment. */
if (!non_stop)
- remote_notif_process (¬if_client_stop);
+ remote_notif_process (rs->notif_state, ¬if_client_stop);
rs->last_sent_signal = siggnal;
rs->last_sent_step = step;
@@ -7395,7 +7399,7 @@ putpkt_binary (char *buf, int cnt)
str);
do_cleanups (old_chain);
}
- handle_notification (rs->buf);
+ handle_notification (rs->notif_state, rs->buf);
/* We're in sync now, rewait for the ack. */
tcount = 0;
}
@@ -7781,7 +7785,7 @@ getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever,
if (is_notif != NULL)
*is_notif = 1;
- handle_notification (*buf);
+ handle_notification (rs->notif_state, *buf);
/* Notifications require no acknowledgement. */
--
1.7.7.6