mirror of https://gitee.com/openkylin/qemu.git
39 lines
865 B
C
39 lines
865 B
C
/*
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* QEMU coroutine sleep
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*
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#include "qemu-coroutine.h"
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#include "qemu-timer.h"
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typedef struct CoSleepCB {
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QEMUTimer *ts;
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Coroutine *co;
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} CoSleepCB;
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static void co_sleep_cb(void *opaque)
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{
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CoSleepCB *sleep_cb = opaque;
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qemu_free_timer(sleep_cb->ts);
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qemu_coroutine_enter(sleep_cb->co, NULL);
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}
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void coroutine_fn co_sleep_ns(QEMUClock *clock, int64_t ns)
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{
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CoSleepCB sleep_cb = {
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.co = qemu_coroutine_self(),
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};
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sleep_cb.ts = qemu_new_timer(clock, SCALE_NS, co_sleep_cb, &sleep_cb);
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qemu_mod_timer(sleep_cb.ts, qemu_get_clock_ns(clock) + ns);
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qemu_coroutine_yield();
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}
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