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| author | MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> | 2013-10-24 16:01:14 +0900 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-10-30 12:22:09 +0100 |
| commit | 3ab7bd1917d210eac5d2a80593899ec70c4e998c (patch) | |
| tree | 6a8ddb6583053b1e583cb32f63de004a3395b683 /qemu-coroutine-sleep.c | |
| parent | 72e0996c41d879473bb2aa85c8eeec129ae8ec9b (diff) | |
| download | qemu-3ab7bd1917d210eac5d2a80593899ec70c4e998c.tar.gz | |
coroutine: add co_aio_sleep_ns() to allow sleep in block drivers
This helper function behaves similarly to co_sleep_ns(), but the
sleeping coroutine will be resumed when using qemu_aio_wait().
Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Tested-by: Liu Yuan <namei.unix@gmail.com>
Reviewed-by: Liu Yuan <namei.unix@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-coroutine-sleep.c')
| -rw-r--r-- | qemu-coroutine-sleep.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/qemu-coroutine-sleep.c b/qemu-coroutine-sleep.c index f6db978c1d..ad78fbaa2a 100644 --- a/qemu-coroutine-sleep.c +++ b/qemu-coroutine-sleep.c @@ -13,6 +13,7 @@ #include "block/coroutine.h" #include "qemu/timer.h" +#include "block/aio.h" typedef struct CoSleepCB { QEMUTimer *ts; @@ -37,3 +38,16 @@ void coroutine_fn co_sleep_ns(QEMUClockType type, int64_t ns) timer_del(sleep_cb.ts); timer_free(sleep_cb.ts); } + +void coroutine_fn co_aio_sleep_ns(AioContext *ctx, QEMUClockType type, + int64_t ns) +{ + CoSleepCB sleep_cb = { + .co = qemu_coroutine_self(), + }; + sleep_cb.ts = aio_timer_new(ctx, type, SCALE_NS, co_sleep_cb, &sleep_cb); + timer_mod(sleep_cb.ts, qemu_clock_get_ns(type) + ns); + qemu_coroutine_yield(); + timer_del(sleep_cb.ts); + timer_free(sleep_cb.ts); +} |