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chardev/char.c: Use qemu_co_sleep_ns if in coroutine

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To be able to convert compare_chr_send to a coroutine in the
next commit, use qemu_co_sleep_ns if in coroutine.

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>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Lukas Straub 2020-05-22 15:53:52 +08:00 committed by Jason Wang
parent 5893c7383e
commit 2158fa1be7
1 changed files with 6 additions and 1 deletions
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5
chardev/char.c
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@ -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) {
if (qemu_in_coroutine()) {
qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 100000);
} else {
g_usleep(100);
}
goto retry;
}