void *opaque)
{
BlockJob *job = opaque;
+ const JobDriver *drv = job->job.driver;
+ BlockJobDriver *bjdrv = container_of(drv, BlockJobDriver, job_driver);
job->job.aio_context = new_context;
- if (job->driver->attached_aio_context) {
- job->driver->attached_aio_context(job, new_context);
+ if (bjdrv->attached_aio_context) {
+ bjdrv->attached_aio_context(job, new_context);
}
job_resume(&job->job);
void block_job_drain(Job *job)
{
BlockJob *bjob = container_of(job, BlockJob, job);
+ const JobDriver *drv = job->driver;
+ BlockJobDriver *bjdrv = container_of(drv, BlockJobDriver, job_driver);
blk_drain(bjob->blk);
- if (bjob->driver->drain) {
- bjob->driver->drain(bjob);
+ if (bjdrv->drain) {
+ bjdrv->drain(bjob);
}
}
job_pause(&job->job);
}
+static bool child_job_drained_poll(BdrvChild *c)
+{
+ BlockJob *bjob = c->opaque;
+ Job *job = &bjob->job;
+ const BlockJobDriver *drv = block_job_driver(bjob);
+
+ /* An inactive or completed job doesn't have any pending requests. Jobs
+ * with !job->busy are either already paused or have a pause point after
+ * being reentered, so no job driver code will run before they pause. */
+ if (!job->busy || job_is_completed(job)) {
+ return false;
+ }
+
+ /* Otherwise, assume that it isn't fully stopped yet, but allow the job to
+ * override this assumption. */
+ if (drv->drained_poll) {
+ return drv->drained_poll(bjob);
+ } else {
+ return true;
+ }
+}
+
static void child_job_drained_end(BdrvChild *c)
{
BlockJob *job = c->opaque;
static const BdrvChildRole child_job = {
.get_parent_desc = child_job_get_parent_desc,
.drained_begin = child_job_drained_begin,
+ .drained_poll = child_job_drained_poll,
.drained_end = child_job_drained_end,
.stay_at_node = true,
};
return 0;
}
+static void block_job_on_idle(Notifier *n, void *opaque)
+{
+ aio_wait_kick();
+}
+
bool block_job_is_internal(BlockJob *job)
{
return (job->job.id == NULL);
const BlockJobDriver *block_job_driver(BlockJob *job)
{
- return job->driver;
+ return container_of(job->job.driver, BlockJobDriver, job_driver);
}
/* Assumes the job_mutex is held */
return ratelimit_calculate_delay(&job->limit, n);
}
-void block_job_dismiss(BlockJob **jobptr, Error **errp)
-{
- BlockJob *job = *jobptr;
- /* similarly to _complete, this is QMP-interface only. */
- assert(job->job.id);
- if (job_apply_verb(&job->job, JOB_VERB_DISMISS, errp)) {
- return;
- }
-
- job_do_dismiss(&job->job);
- *jobptr = NULL;
-}
-
-void block_job_progress_update(BlockJob *job, uint64_t done)
-{
- job->offset += done;
-}
-
-void block_job_progress_set_remaining(BlockJob *job, uint64_t remaining)
-{
- job->len = job->offset + remaining;
-}
-
BlockJobInfo *block_job_query(BlockJob *job, Error **errp)
{
BlockJobInfo *info;
info = g_new0(BlockJobInfo, 1);
info->type = g_strdup(job_type_str(&job->job));
info->device = g_strdup(job->job.id);
- info->len = job->len;
info->busy = atomic_read(&job->job.busy);
info->paused = job->job.pause_count > 0;
- info->offset = job->offset;
+ info->offset = job->job.progress_current;
+ info->len = job->job.progress_total;
info->speed = job->speed;
info->io_status = job->iostatus;
- info->ready = job->ready;
+ info->ready = job_is_ready(&job->job),
info->status = job->job.status;
info->auto_finalize = job->job.auto_finalize;
info->auto_dismiss = job->job.auto_dismiss;
qapi_event_send_block_job_cancelled(job_type(&job->job),
job->job.id,
- job->len,
- job->offset,
- job->speed,
- &error_abort);
+ job->job.progress_total,
+ job->job.progress_current,
+ job->speed);
}
static void block_job_event_completed(Notifier *n, void *opaque)
qapi_event_send_block_job_completed(job_type(&job->job),
job->job.id,
- job->len,
- job->offset,
+ job->job.progress_total,
+ job->job.progress_current,
job->speed,
!!msg,
- msg,
- &error_abort);
+ msg);
}
static void block_job_event_pending(Notifier *n, void *opaque)
}
qapi_event_send_block_job_pending(job_type(&job->job),
- job->job.id,
- &error_abort);
+ job->job.id);
+}
+
+static void block_job_event_ready(Notifier *n, void *opaque)
+{
+ BlockJob *job = opaque;
+
+ if (block_job_is_internal(job)) {
+ return;
+ }
+
+ qapi_event_send_block_job_ready(job_type(&job->job),
+ job->job.id,
+ job->job.progress_total,
+ job->job.progress_current,
+ job->speed);
}
+
/*
* API for block job drivers and the block layer. These functions are
* declared in blockjob_int.h.
assert(job->job.driver->user_resume == &block_job_user_resume);
assert(job->job.driver->drain == &block_job_drain);
- job->driver = driver;
- job->blk = blk;
+ job->blk = blk;
job->finalize_cancelled_notifier.notify = block_job_event_cancelled;
job->finalize_completed_notifier.notify = block_job_event_completed;
job->pending_notifier.notify = block_job_event_pending;
+ job->ready_notifier.notify = block_job_event_ready;
+ job->idle_notifier.notify = block_job_on_idle;
notifier_list_add(&job->job.on_finalize_cancelled,
&job->finalize_cancelled_notifier);
notifier_list_add(&job->job.on_finalize_completed,
&job->finalize_completed_notifier);
notifier_list_add(&job->job.on_pending, &job->pending_notifier);
+ notifier_list_add(&job->job.on_ready, &job->ready_notifier);
+ notifier_list_add(&job->job.on_idle, &job->idle_notifier);
error_setg(&job->blocker, "block device is in use by block job: %s",
job_type_str(&job->job));
return job;
}
-void block_job_yield(BlockJob *job)
-{
- assert(job->job.busy);
-
- /* Check cancellation *before* setting busy = false, too! */
- if (job_is_cancelled(&job->job)) {
- return;
- }
-
- if (!job_should_pause(&job->job)) {
- job_do_yield(&job->job, -1);
- }
-
- job_pause_point(&job->job);
-}
-
void block_job_iostatus_reset(BlockJob *job)
{
if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) {
block_job_iostatus_reset(bjob);
}
-void block_job_event_ready(BlockJob *job)
-{
- job_state_transition(&job->job, JOB_STATUS_READY);
- job->ready = true;
-
- if (block_job_is_internal(job)) {
- return;
- }
-
- qapi_event_send_block_job_ready(job_type(&job->job),
- job->job.id,
- job->len,
- job->offset,
- job->speed, &error_abort);
-}
-
BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err,
int is_read, int error)
{
qapi_event_send_block_job_error(job->job.id,
is_read ? IO_OPERATION_TYPE_READ :
IO_OPERATION_TYPE_WRITE,
- action, &error_abort);
+ action);
}
if (action == BLOCK_ERROR_ACTION_STOP) {
job_pause(&job->job);
projects / qemu.git / blobdiff