From 7e6246670add62116729bd93811e41eb60f66b77 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Wed, 18 Jan 2012 14:40:40 +0000 Subject: coroutine: add co_sleep_ns() coroutine sleep function Signed-off-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf --- qemu-coroutine-sleep.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 qemu-coroutine-sleep.c (limited to 'qemu-coroutine-sleep.c') diff --git a/qemu-coroutine-sleep.c b/qemu-coroutine-sleep.c new file mode 100644 index 0000000000..fd65274446 --- /dev/null +++ b/qemu-coroutine-sleep.c @@ -0,0 +1,38 @@ +/* + * QEMU coroutine sleep + * + * Copyright IBM, Corp. 2011 + * + * Authors: + * Stefan Hajnoczi + * + * 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(); +} -- cgit v1.2.1