[qemu.git] / qemu-coroutine-sleep.c

/*
 * QEMU coroutine sleep
 *
 * Copyright IBM, Corp. 2011
 *
 * Authors:
 *  Stefan Hajnoczi    <[email protected]>
 *
 * 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-coroutine.h"
#include "qemu-timer.h"

typedef struct CoSleepCB {
    QEMUTimer *ts;
    Coroutine *co;
} CoSleepCB;

static void co_sleep_cb(void *opaque)
{
    CoSleepCB *sleep_cb = opaque;

    qemu_free_timer(sleep_cb->ts);
    qemu_coroutine_enter(sleep_cb->co, NULL);
}

void coroutine_fn co_sleep_ns(QEMUClock *clock, int64_t ns)
{
    CoSleepCB sleep_cb = {
        .co = qemu_coroutine_self(),
    };
    sleep_cb.ts = qemu_new_timer(clock, SCALE_NS, co_sleep_cb, &sleep_cb);
    qemu_mod_timer(sleep_cb.ts, qemu_get_clock_ns(clock) + ns);
    qemu_coroutine_yield();
}
Commit	Line	Data
7e624667 SH	1	/*
	2	* QEMU coroutine sleep
	3	*
	4	* Copyright IBM, Corp. 2011
	5	*
	6	* Authors:
	7	* Stefan Hajnoczi <[email protected]>
	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-coroutine.h"
	15	#include "qemu-timer.h"
	16
	17	typedef struct CoSleepCB {
	18	QEMUTimer *ts;
	19	Coroutine *co;
	20	} CoSleepCB;
	21
	22	static void co_sleep_cb(void *opaque)
	23	{
	24	CoSleepCB *sleep_cb = opaque;
	25
	26	qemu_free_timer(sleep_cb->ts);
	27	qemu_coroutine_enter(sleep_cb->co, NULL);
	28	}
	29
	30	void coroutine_fn co_sleep_ns(QEMUClock *clock, int64_t ns)
	31	{
	32	CoSleepCB sleep_cb = {
	33	.co = qemu_coroutine_self(),
	34	};
	35	sleep_cb.ts = qemu_new_timer(clock, SCALE_NS, co_sleep_cb, &sleep_cb);
	36	qemu_mod_timer(sleep_cb.ts, qemu_get_clock_ns(clock) + ns);
	37	qemu_coroutine_yield();
	38	}