Stefan Hajnoczi | 7e62466 | 2012-01-18 14:40:40 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU coroutine sleep |
| 3 | * |
| 4 | * Copyright IBM, Corp. 2011 |
| 5 | * |
| 6 | * Authors: |
| 7 | * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> |
| 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 | |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 14 | #include "block/coroutine.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 15 | #include "qemu/timer.h" |
Stefan Hajnoczi | 7e62466 | 2012-01-18 14:40:40 +0000 | [diff] [blame] | 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 | |
Stefan Hajnoczi | 7e62466 | 2012-01-18 14:40:40 +0000 | [diff] [blame] | 26 | qemu_coroutine_enter(sleep_cb->co, NULL); |
| 27 | } |
| 28 | |
| 29 | void coroutine_fn co_sleep_ns(QEMUClock *clock, int64_t ns) |
| 30 | { |
| 31 | CoSleepCB sleep_cb = { |
| 32 | .co = qemu_coroutine_self(), |
| 33 | }; |
| 34 | sleep_cb.ts = qemu_new_timer(clock, SCALE_NS, co_sleep_cb, &sleep_cb); |
| 35 | qemu_mod_timer(sleep_cb.ts, qemu_get_clock_ns(clock) + ns); |
| 36 | qemu_coroutine_yield(); |
Paolo Bonzini | 3ed9902 | 2012-04-18 15:12:01 +0200 | [diff] [blame] | 37 | qemu_del_timer(sleep_cb.ts); |
| 38 | qemu_free_timer(sleep_cb.ts); |
Stefan Hajnoczi | 7e62466 | 2012-01-18 14:40:40 +0000 | [diff] [blame] | 39 | } |