mirror of
https://github.com/qemu/qemu.git
synced 2024-11-27 13:53:45 +08:00
3ab7bd1917
This helper function behaves similarly to co_sleep_ns(), but the sleeping coroutine will be resumed when using qemu_aio_wait(). Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Tested-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
|
|
* QEMU coroutine sleep
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#include "block/coroutine.h"
|
|
#include "qemu/timer.h"
|
|
#include "block/aio.h"
|
|
|
|
typedef struct CoSleepCB {
|
|
QEMUTimer *ts;
|
|
Coroutine *co;
|
|
} CoSleepCB;
|
|
|
|
static void co_sleep_cb(void *opaque)
|
|
{
|
|
CoSleepCB *sleep_cb = opaque;
|
|
|
|
qemu_coroutine_enter(sleep_cb->co, NULL);
|
|
}
|
|
|
|
void coroutine_fn co_sleep_ns(QEMUClockType type, int64_t ns)
|
|
{
|
|
CoSleepCB sleep_cb = {
|
|
.co = qemu_coroutine_self(),
|
|
};
|
|
sleep_cb.ts = timer_new(type, SCALE_NS, co_sleep_cb, &sleep_cb);
|
|
timer_mod(sleep_cb.ts, qemu_clock_get_ns(type) + ns);
|
|
qemu_coroutine_yield();
|
|
timer_del(sleep_cb.ts);
|
|
timer_free(sleep_cb.ts);
|
|
}
|
|
|
|
void coroutine_fn co_aio_sleep_ns(AioContext *ctx, QEMUClockType type,
|
|
int64_t ns)
|
|
{
|
|
CoSleepCB sleep_cb = {
|
|
.co = qemu_coroutine_self(),
|
|
};
|
|
sleep_cb.ts = aio_timer_new(ctx, type, SCALE_NS, co_sleep_cb, &sleep_cb);
|
|
timer_mod(sleep_cb.ts, qemu_clock_get_ns(type) + ns);
|
|
qemu_coroutine_yield();
|
|
timer_del(sleep_cb.ts);
|
|
timer_free(sleep_cb.ts);
|
|
}
|