These changes are the raw update to qemu-2.6.
[kvmfornfv.git] / qemu / util / qemu-coroutine-sleep.c
1 /*
2  * QEMU coroutine sleep
3  *
4  * Copyright IBM, Corp. 2011
5  *
6  * Authors:
7  *  Stefan Hajnoczi    <stefanha@linux.vnet.ibm.com>
8  *
9  * This work is licensed under the terms of the GNU LGPL, version 2 or later.
10  * See the COPYING.LIB file in the top-level directory.
11  *
12  */
13
14 #include "qemu/osdep.h"
15 #include "qemu/coroutine.h"
16 #include "qemu/timer.h"
17 #include "block/aio.h"
18
19 typedef struct CoSleepCB {
20     QEMUTimer *ts;
21     Coroutine *co;
22 } CoSleepCB;
23
24 static void co_sleep_cb(void *opaque)
25 {
26     CoSleepCB *sleep_cb = opaque;
27
28     qemu_coroutine_enter(sleep_cb->co, NULL);
29 }
30
31 void coroutine_fn co_aio_sleep_ns(AioContext *ctx, QEMUClockType type,
32                                   int64_t ns)
33 {
34     CoSleepCB sleep_cb = {
35         .co = qemu_coroutine_self(),
36     };
37     sleep_cb.ts = aio_timer_new(ctx, type, SCALE_NS, co_sleep_cb, &sleep_cb);
38     timer_mod(sleep_cb.ts, qemu_clock_get_ns(type) + ns);
39     qemu_coroutine_yield();
40     timer_del(sleep_cb.ts);
41     timer_free(sleep_cb.ts);
42 }