root / qemu-coroutine-sleep.c @ 737e150e
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| 1 | 7e624667 | Stefan Hajnoczi | /*
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| 2 | 7e624667 | Stefan Hajnoczi | * QEMU coroutine sleep
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| 3 | 7e624667 | Stefan Hajnoczi | *
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| 4 | 7e624667 | Stefan Hajnoczi | * Copyright IBM, Corp. 2011
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| 5 | 7e624667 | Stefan Hajnoczi | *
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| 6 | 7e624667 | Stefan Hajnoczi | * Authors:
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| 7 | 7e624667 | Stefan Hajnoczi | * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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| 8 | 7e624667 | Stefan Hajnoczi | *
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| 9 | 7e624667 | Stefan Hajnoczi | * This work is licensed under the terms of the GNU LGPL, version 2 or later.
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| 10 | 7e624667 | Stefan Hajnoczi | * See the COPYING.LIB file in the top-level directory.
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| 11 | 7e624667 | Stefan Hajnoczi | *
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| 12 | 7e624667 | Stefan Hajnoczi | */
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| 13 | 7e624667 | Stefan Hajnoczi | |
| 14 | 737e150e | Paolo Bonzini | #include "block/coroutine.h" |
| 15 | 7e624667 | Stefan Hajnoczi | #include "qemu-timer.h" |
| 16 | 7e624667 | Stefan Hajnoczi | |
| 17 | 7e624667 | Stefan Hajnoczi | typedef struct CoSleepCB { |
| 18 | 7e624667 | Stefan Hajnoczi | QEMUTimer *ts; |
| 19 | 7e624667 | Stefan Hajnoczi | Coroutine *co; |
| 20 | 7e624667 | Stefan Hajnoczi | } CoSleepCB; |
| 21 | 7e624667 | Stefan Hajnoczi | |
| 22 | 7e624667 | Stefan Hajnoczi | static void co_sleep_cb(void *opaque) |
| 23 | 7e624667 | Stefan Hajnoczi | {
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| 24 | 7e624667 | Stefan Hajnoczi | CoSleepCB *sleep_cb = opaque; |
| 25 | 7e624667 | Stefan Hajnoczi | |
| 26 | 7e624667 | Stefan Hajnoczi | qemu_coroutine_enter(sleep_cb->co, NULL);
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| 27 | 7e624667 | Stefan Hajnoczi | } |
| 28 | 7e624667 | Stefan Hajnoczi | |
| 29 | 7e624667 | Stefan Hajnoczi | void coroutine_fn co_sleep_ns(QEMUClock *clock, int64_t ns)
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| 30 | 7e624667 | Stefan Hajnoczi | {
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| 31 | 7e624667 | Stefan Hajnoczi | CoSleepCB sleep_cb = {
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| 32 | 7e624667 | Stefan Hajnoczi | .co = qemu_coroutine_self(), |
| 33 | 7e624667 | Stefan Hajnoczi | }; |
| 34 | 7e624667 | Stefan Hajnoczi | sleep_cb.ts = qemu_new_timer(clock, SCALE_NS, co_sleep_cb, &sleep_cb); |
| 35 | 7e624667 | Stefan Hajnoczi | qemu_mod_timer(sleep_cb.ts, qemu_get_clock_ns(clock) + ns); |
| 36 | 7e624667 | Stefan Hajnoczi | qemu_coroutine_yield(); |
| 37 | 3ed99025 | Paolo Bonzini | qemu_del_timer(sleep_cb.ts); |
| 38 | 3ed99025 | Paolo Bonzini | qemu_free_timer(sleep_cb.ts); |
| 39 | 7e624667 | Stefan Hajnoczi | } |