[Qemu-devel] [PATCH 06/11] QMP: Introduce asynchronous events infrastructure

[Luiz Capitulino <lcapitulino@redhat.com>]

It is just an exported function that will be used by other subsystems
to print specific events to the output buffer.

This is based in ideas by Amit Shah <amit.shah@redhat.com>.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
---
 monitor.c   |   18 ++++++++++++++++++
 monitor.h   |    6 ++++++
 qemu-tool.c |    4 ++++
 3 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/monitor.c b/monitor.c
index 462f60b..df58bdd 100644
--- a/monitor.c
+++ b/monitor.c
@@ -266,6 +266,24 @@ void monitor_printf_data(Monitor *mon, const char *fmt, ...)
     va_end(ap);
 }
 
+/* Asynchronous events main function */
+void monitor_notify_event(MonitorEvent event)
+{
+    if (!monitor_ctrl_mode(cur_mon))
+        return;
+
+    assert(event < EVENT_MAX);
+    monitor_puts(cur_mon, "* EVENT ");
+
+    switch (event) {
+    case EVENT_MAX:
+        // Avoid gcc warning, will never get here
+        break;
+    }
+
+    monitor_puts(cur_mon, "\n");
+}
+
 static int compare_cmd(const char *name, const char *list)
 {
     const char *p, *pstart;
diff --git a/monitor.h b/monitor.h
index 8b054eb..7cc88cc 100644
--- a/monitor.h
+++ b/monitor.h
@@ -12,6 +12,11 @@ extern Monitor *cur_mon;
 #define MONITOR_USE_READLINE  0x02
 #define MONITOR_USE_CONTROL   0x04
 
+/* QMP events */
+typedef enum MonitorEvent {
+    EVENT_MAX,
+} MonitorEvent;
+
 void monitor_init(CharDriverState *chr, int flags);
 
 int monitor_suspend(Monitor *mon);
@@ -28,6 +33,7 @@ void monitor_printf_bad(Monitor *mon, const char *fmt, ...);
 void monitor_printf_err(Monitor *mon, const char *fmt, ...);
 void monitor_printf_data(Monitor *mon, const char *fmt, ...);
 void monitor_print_filename(Monitor *mon, const char *filename);
+void monitor_notify_event(MonitorEvent event);
 void monitor_flush(Monitor *mon);
 
 #endif /* !MONITOR_H */
diff --git a/qemu-tool.c b/qemu-tool.c
index 2ba9983..4798665 100644
--- a/qemu-tool.c
+++ b/qemu-tool.c
@@ -40,6 +40,10 @@ void monitor_print_filename(Monitor *mon, const char *filename)
 {
 }
 
+void monitor_notify_event(MonitorEvent event)
+{
+}
+
 void monitor_printf_bad(Monitor *mon, const char *fmt, ...)
 {
 }
-- 
1.6.3.GIT