mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 12:09:58 +00:00
8595685986
Drop CoSleepCB structure. It's actually unused. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20190122143113.20331-1-vsementsov@virtuozzo.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
48 lines
1.2 KiB
C
48 lines
1.2 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 "qemu/osdep.h"
|
|
#include "qemu/coroutine.h"
|
|
#include "qemu/coroutine_int.h"
|
|
#include "qemu/timer.h"
|
|
#include "block/aio.h"
|
|
|
|
static void co_sleep_cb(void *opaque)
|
|
{
|
|
Coroutine *co = opaque;
|
|
|
|
/* Write of schedule protected by barrier write in aio_co_schedule */
|
|
atomic_set(&co->scheduled, NULL);
|
|
aio_co_wake(co);
|
|
}
|
|
|
|
void coroutine_fn qemu_co_sleep_ns(QEMUClockType type, int64_t ns)
|
|
{
|
|
AioContext *ctx = qemu_get_current_aio_context();
|
|
QEMUTimer *ts;
|
|
Coroutine *co = qemu_coroutine_self();
|
|
|
|
const char *scheduled = atomic_cmpxchg(&co->scheduled, NULL, __func__);
|
|
if (scheduled) {
|
|
fprintf(stderr,
|
|
"%s: Co-routine was already scheduled in '%s'\n",
|
|
__func__, scheduled);
|
|
abort();
|
|
}
|
|
ts = aio_timer_new(ctx, type, SCALE_NS, co_sleep_cb, co);
|
|
timer_mod(ts, qemu_clock_get_ns(type) + ns);
|
|
qemu_coroutine_yield();
|
|
timer_del(ts);
|
|
timer_free(ts);
|
|
}
|