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| author | Fam Zheng | 2014-06-24 14:26:35 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2014-06-26 12:12:22 +0200 |
| commit | dc71ce45ded4e872e25c2de32d5e7a71842b0985 (patch) | |
| tree | aa75e25f7c562b0bf0e77ed653026d7bacaaff2e | |
| parent | Merge remote-tracking branch 'remotes/mjt/tags/trivial-patches-2014-06-24' in... (diff) | |
| download | qemu-dc71ce45ded4e872e25c2de32d5e7a71842b0985.tar.gz qemu-dc71ce45ded4e872e25c2de32d5e7a71842b0985.tar.xz qemu-dc71ce45ded4e872e25c2de32d5e7a71842b0985.zip | |
blockjob: Add block_job_yield()
This will unset busy flag and put coroutine to sleep, can be used to
wait for QMP complete/cancel.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | blockjob.c | 14 | ||||
| -rw-r--r-- | include/block/blockjob.h | 8 |
2 files changed, 22 insertions, 0 deletions
diff --git a/blockjob.c b/blockjob.c index 4da86cdfcd..a6db01e953 100644 --- a/blockjob.c +++ b/blockjob.c @@ -210,6 +210,20 @@ void block_job_sleep_ns(BlockJob *job, QEMUClockType type, int64_t ns) job->busy = true; } +void block_job_yield(BlockJob *job) +{ + assert(job->busy); + + /* Check cancellation *before* setting busy = false, too! */ + if (block_job_is_cancelled(job)) { + return; + } + + job->busy = false; + qemu_coroutine_yield(); + job->busy = true; +} + BlockJobInfo *block_job_query(BlockJob *job) { BlockJobInfo *info = g_new0(BlockJobInfo, 1); diff --git a/include/block/blockjob.h b/include/block/blockjob.h index e443987ea8..67ca076380 100644 --- a/include/block/blockjob.h +++ b/include/block/blockjob.h @@ -147,6 +147,14 @@ void *block_job_create(const BlockJobDriver *driver, BlockDriverState *bs, void block_job_sleep_ns(BlockJob *job, QEMUClockType type, int64_t ns); /** + * block_job_yield: + * @job: The job that calls the function. + * + * Yield the block job coroutine. + */ +void block_job_yield(BlockJob *job); + +/** * block_job_completed: * @job: The job being completed. * @ret: The status code. |