[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [RFC v3 16/27] monitor: let monitor_{suspend|resume} thread
From: |
Peter Xu |
Subject: |
[Qemu-devel] [RFC v3 16/27] monitor: let monitor_{suspend|resume} thread safe |
Date: |
Mon, 6 Nov 2017 17:46:32 +0800 |
Monitor code now can be run in more than one thread. Let the suspend
and resume code for thread safety.
---
monitor.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/monitor.c b/monitor.c
index 1e87de87f8..47e969244d 100644
--- a/monitor.c
+++ b/monitor.c
@@ -4003,7 +4003,7 @@ int monitor_suspend(Monitor *mon)
{
if (!mon->rs)
return -ENOTTY;
- mon->suspend_cnt++;
+ atomic_inc(&mon->suspend_cnt);
return 0;
}
@@ -4011,7 +4011,7 @@ void monitor_resume(Monitor *mon)
{
if (!mon->rs)
return;
- if (--mon->suspend_cnt == 0)
+ if (atomic_dec_fetch(&mon->suspend_cnt) == 0)
readline_show_prompt(mon->rs);
}
--
2.13.5
- Re: [Qemu-devel] [RFC v3 10/27] monitor: create monitor dedicate iothread, (continued)
[Qemu-devel] [RFC v3 11/27] monitor: allow to use IO thread for parsing, Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 12/27] qmp: introduce QMPCapability, Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 13/27] qmp: negociate QMP capabilities, Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 14/27] qmp: introduce some capability helpers, Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 15/27] monitor: introduce monitor_qmp_respond(), Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 16/27] monitor: let monitor_{suspend|resume} thread safe,
Peter Xu <=
[Qemu-devel] [RFC v3 17/27] monitor: separate QMP parser and dispatcher, Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 18/27] qmp: add new event "request-dropped", Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 19/27] monitor: send event when request queue full, Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 20/27] qapi: introduce new cmd option "allow-oob", Peter Xu, 2017/11/06
[Qemu-devel] [RFC v3 21/27] qmp: support out-of-band (oob) execution, Peter Xu, 2017/11/06