From: Zhang Chen <chen.zhang@intel.com >
To: Jason Wang <jasowang@redhat.com>
Cc: Zhang Chen <chen.zhang@intel.com>,
Lukas Straub <lukasstraub2@web.de>,
qemu-dev <qemu-devel@nongnu.org>,
Zhang Chen <zhangckid@gmail.com>
Subject: [PATCH 3/7] chardev/char.c: Use qemu_co_sleep_ns if in coroutine
Date: Wed, 20 May 2020 04:02:03 +0800 [thread overview]
Message-ID: <20200519200207.17773-4-chen.zhang@intel.com> (raw)
In-Reply-To: <20200519200207.17773-1-chen.zhang@intel.com>
From: Lukas Straub <lukasstraub2@web.de>
This will be needed in the next patch.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
---
chardev/char.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/chardev/char.c b/chardev/char.c
index 0196e2887b..4c58ea1836 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -38,6 +38,7 @@
#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/id.h"
+#include "qemu/coroutine.h"
#include "chardev/char-mux.h"
@@ -119,7 +120,11 @@ static int qemu_chr_write_buffer(Chardev *s,
retry:
res = cc->chr_write(s, buf + *offset, len - *offset);
if (res < 0 && errno == EAGAIN && write_all) {
- g_usleep(100);
+ if (qemu_in_coroutine()) {
+ qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 100000);
+ } else {
+ g_usleep(100);
+ }
goto retry;
}
--
2.17.1
next prev parent reply other threads:[~2020-05-19 20:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-19 20:02 [PATCH 0/7] Latest COLO tree queued patches Zhang Chen
2020-05-19 20:02 ` [PATCH 1/7] colo-compare: Fix memory leak in packet_enqueue() Zhang Chen
2020-05-20 5:52 ` Philippe Mathieu-Daudé
2020-05-19 20:02 ` [PATCH 2/7] net/colo-compare.c: Create event_bh with the right AioContext Zhang Chen
2020-05-19 20:02 ` Zhang Chen [this message]
2020-05-20 5:34 ` [PATCH 3/7] chardev/char.c: Use qemu_co_sleep_ns if in coroutine Philippe Mathieu-Daudé
2020-05-19 20:02 ` [PATCH 4/7] net/colo-compare.c: Fix deadlock in compare_chr_send Zhang Chen
2020-05-19 20:02 ` [PATCH 5/7] net/colo-compare.c: Only hexdump packets if tracing is enabled Zhang Chen
2020-05-19 20:02 ` [PATCH 6/7] net/colo-compare.c, softmmu/vl.c: Check that colo-compare is active Zhang Chen
2020-05-19 20:02 ` [PATCH 7/7] net/colo-compare.c: Correct ordering in complete and finalize Zhang Chen
2020-05-20 2:47 ` [PATCH 0/7] Latest COLO tree queued patches Jason Wang
2020-05-20 4:41 ` no-reply
2020-05-20 9:07 ` Zhang, Chen
2020-05-20 12:22 ` Jason Wang
2020-05-21 1:30 ` Zhang, Chen
2020-05-21 19:54 ` Lukas Straub
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