commit 987bd27000b6e21df6c73f6badb945ab5e42996a
author Dr. David Alan Gilbert <dgilbert@redhat.com> Fri Aug 14 11:27:43 2015 +0100
committer Stefan Hajnoczi <stefanha@redhat.com> Thu Sep 03 15:46:10 2015 +0100
tree ef84e44661aa5ab238ac6a4e88bae240e0bf624d
parent 561578c2a82292ddf55737791d2838b797f49f35

trace-events: Add hmp completion

Add completion for the trace event names in the hmp trace-event
command.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 1439548063-18410-1-git-send-email-dgilbert@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

hmp-commands.hx

diff --git a/hmp-commands.hx b/hmp-commands.hx
index d3b7932..94d2c39 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -271,6 +271,7 @@
         .params     = "name on|off",
         .help       = "changes status of a specific trace event",
         .mhandler.cmd = hmp_trace_event,
+        .command_completion = trace_event_completion,
     },
 
 STEXI

hmp.h

diff --git a/hmp.h b/hmp.h
index 0cf4f2a..b8f5d33 100644
--- a/hmp.h
+++ b/hmp.h
@@ -113,6 +113,7 @@
 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str);
 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str);
 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str);
+void trace_event_completion(ReadLineState *rs, int nb_args, const char *str);
 void watchdog_action_completion(ReadLineState *rs, int nb_args,
                                 const char *str);
 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,

monitor.c

diff --git a/monitor.c b/monitor.c
index fc32f12..b432447 100644
--- a/monitor.c
+++ b/monitor.c
@@ -4429,6 +4429,26 @@
     }
 }
 
+void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    size_t len;
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    if (nb_args == 2) {
+        TraceEventID id;
+        for (id = 0; id < trace_event_count(); id++) {
+            const char *event_name = trace_event_get_name(trace_event_id(id));
+            if (!strncmp(str, event_name, len)) {
+                readline_add_completion(rs, event_name);
+            }
+        }
+    } else if (nb_args == 3) {
+        add_completion_option(rs, str, "on");
+        add_completion_option(rs, str, "off");
+    }
+}
+
 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
 {
     int i;