/* * 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" 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(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(); qemu_del_timer(sleep_cb.ts); qemu_free_timer(sleep_cb.ts); }