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jobs: remove job_defer_to_main_loop

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Now that the job infrastructure is handling the job_completed call for
all implemented jobs, we can remove the interface that allowed jobs to
schedule their own completion.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 20180830015734.19765-10-jsnow@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
John Snow 2018-08-29 21:57:34 -04:00 committed by Max Reitz
parent 404ff28d6a
commit e21a1c9831
2 changed files with 2 additions and 55 deletions
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17
include/qemu/job.h
View File

@ -568,23 +568,6 @@ void job_finalize(Job *job, Error **errp);
*/
void job_dismiss(Job **job, Error **errp);
typedef void JobDeferToMainLoopFn(Job *job, void *opaque);
/**
* @job: The job
* @fn: The function to run in the main loop
* @opaque: The opaque value that is passed to @fn
*
* This function must be called by the main job coroutine just before it
* returns. @fn is executed in the main loop with the job AioContext acquired.
*
* Block jobs must call bdrv_unref(), bdrv_close(), and anything that uses
* bdrv_drain_all() in the main loop.
*
* The @job AioContext is held while @fn executes.
*/
void job_defer_to_main_loop(Job *job, JobDeferToMainLoopFn *fn, void *opaque);
/**
* Synchronously finishes the given @job. If @finish is given, it is called to
* trigger completion or cancellation of the job.

40
job.c
View File

@ -561,12 +561,8 @@ static void coroutine_fn job_co_entry(void *opaque)
assert(job && job->driver && job->driver->run);
job_pause_point(job);
job->ret = job->driver->run(job, &job->err);
if (!job->deferred_to_main_loop) {
job->deferred_to_main_loop = true;
aio_bh_schedule_oneshot(qemu_get_aio_context(),
job_exit,
job);
}
job->deferred_to_main_loop = true;
aio_bh_schedule_oneshot(qemu_get_aio_context(), job_exit, job);
}
@ -969,38 +965,6 @@ void job_complete(Job *job, Error **errp)
job->driver->complete(job, errp);
}
typedef struct {
Job *job;
JobDeferToMainLoopFn *fn;
void *opaque;
} JobDeferToMainLoopData;
static void job_defer_to_main_loop_bh(void *opaque)
{
JobDeferToMainLoopData *data = opaque;
Job *job = data->job;
AioContext *aio_context = job->aio_context;
aio_context_acquire(aio_context);
data->fn(data->job, data->opaque);
aio_context_release(aio_context);
g_free(data);
}
void job_defer_to_main_loop(Job *job, JobDeferToMainLoopFn *fn, void *opaque)
{
JobDeferToMainLoopData *data = g_malloc(sizeof(*data));
data->job = job;
data->fn = fn;
data->opaque = opaque;
job->deferred_to_main_loop = true;
aio_bh_schedule_oneshot(qemu_get_aio_context(),
job_defer_to_main_loop_bh, data);
}
int job_finish_sync(Job *job, void (*finish)(Job *, Error **errp), Error **errp)
{
Error *local_err = NULL;