diff options
| -rw-r--r-- | blockjob.c | 41 | ||||
| -rw-r--r-- | include/block/blockjob.h | 9 | ||||
| -rw-r--r-- | include/qemu/job.h | 18 | ||||
| -rw-r--r-- | job.c | 19 |
4 files changed, 73 insertions, 14 deletions
@@ -36,10 +36,6 @@ #include "qemu/coroutine.h" #include "qemu/timer.h" -static void block_job_event_cancelled(BlockJob *job); -static void block_job_event_completed(BlockJob *job, const char *msg); -static void block_job_event_pending(BlockJob *job); - /* Transactional group of block jobs */ struct BlockJobTxn { @@ -352,13 +348,9 @@ static int block_job_finalize_single(BlockJob *job) /* Emit events only if we actually started */ if (job_started(&job->job)) { if (job_is_cancelled(&job->job)) { - block_job_event_cancelled(job); + job_event_cancelled(&job->job); } else { - const char *msg = NULL; - if (job->ret < 0) { - msg = strerror(-job->ret); - } - block_job_event_completed(job, msg); + job_event_completed(&job->job); } } @@ -504,7 +496,7 @@ static int block_job_transition_to_pending(BlockJob *job) { job_state_transition(&job->job, JOB_STATUS_PENDING); if (!job->job.auto_finalize) { - block_job_event_pending(job); + job_event_pending(&job->job); } return 0; } @@ -712,8 +704,10 @@ static void block_job_iostatus_set_err(BlockJob *job, int error) } } -static void block_job_event_cancelled(BlockJob *job) +static void block_job_event_cancelled(Notifier *n, void *opaque) { + BlockJob *job = opaque; + if (block_job_is_internal(job)) { return; } @@ -726,12 +720,19 @@ static void block_job_event_cancelled(BlockJob *job) &error_abort); } -static void block_job_event_completed(BlockJob *job, const char *msg) +static void block_job_event_completed(Notifier *n, void *opaque) { + BlockJob *job = opaque; + const char *msg = NULL; + if (block_job_is_internal(job)) { return; } + if (job->ret < 0) { + msg = strerror(-job->ret); + } + qapi_event_send_block_job_completed(job_type(&job->job), job->job.id, job->len, @@ -742,8 +743,10 @@ static void block_job_event_completed(BlockJob *job, const char *msg) &error_abort); } -static void block_job_event_pending(BlockJob *job) +static void block_job_event_pending(Notifier *n, void *opaque) { + BlockJob *job = opaque; + if (block_job_is_internal(job)) { return; } @@ -799,6 +802,16 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver, job->cb = cb; job->opaque = opaque; + 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; + + 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); + error_setg(&job->blocker, "block device is in use by block job: %s", job_type_str(&job->job)); block_job_add_bdrv(job, "main node", bs, 0, BLK_PERM_ALL, &error_abort); diff --git a/include/block/blockjob.h b/include/block/blockjob.h index f9aaaaa..aef0629 100644 --- a/include/block/blockjob.h +++ b/include/block/blockjob.h @@ -82,6 +82,15 @@ typedef struct BlockJob { /** Block other operations when block job is running */ Error *blocker; + /** Called when a cancelled job is finalised. */ + Notifier finalize_cancelled_notifier; + + /** Called when a successfully completed job is finalised. */ + Notifier finalize_completed_notifier; + + /** Called when the job transitions to PENDING */ + Notifier pending_notifier; + /** BlockDriverStates that are involved in this block job */ GSList *nodes; diff --git a/include/qemu/job.h b/include/qemu/job.h index 9783e40..14d9377 100644 --- a/include/qemu/job.h +++ b/include/qemu/job.h @@ -105,6 +105,15 @@ typedef struct Job { /** True if this job should automatically dismiss itself */ bool auto_dismiss; + /** Notifiers called when a cancelled job is finalised */ + NotifierList on_finalize_cancelled; + + /** Notifiers called when a successfully completed job is finalised */ + NotifierList on_finalize_completed; + + /** Notifiers called when the job transitions to PENDING */ + NotifierList on_pending; + /** Element of the list of jobs */ QLIST_ENTRY(Job) job_list; } Job; @@ -182,6 +191,15 @@ void job_ref(Job *job); */ void job_unref(Job *job); +/** To be called when a cancelled job is finalised. */ +void job_event_cancelled(Job *job); + +/** To be called when a successfully completed job is finalised. */ +void job_event_completed(Job *job); + +/** To be called when the job transitions to PENDING */ +void job_event_pending(Job *job); + /** * Conditionally enter the job coroutine if the job is ready to run, not * already busy and fn() returns true. fn() is called while under the job_lock @@ -215,6 +215,10 @@ void *job_create(const char *job_id, const JobDriver *driver, AioContext *ctx, job->auto_finalize = !(flags & JOB_MANUAL_FINALIZE); job->auto_dismiss = !(flags & JOB_MANUAL_DISMISS); + notifier_list_init(&job->on_finalize_cancelled); + notifier_list_init(&job->on_finalize_completed); + notifier_list_init(&job->on_pending); + job_state_transition(job, JOB_STATUS_CREATED); aio_timer_init(qemu_get_aio_context(), &job->sleep_timer, QEMU_CLOCK_REALTIME, SCALE_NS, @@ -247,6 +251,21 @@ void job_unref(Job *job) } } +void job_event_cancelled(Job *job) +{ + notifier_list_notify(&job->on_finalize_cancelled, job); +} + +void job_event_completed(Job *job) +{ + notifier_list_notify(&job->on_finalize_completed, job); +} + +void job_event_pending(Job *job) +{ + notifier_list_notify(&job->on_pending, job); +} + void job_enter_cond(Job *job, bool(*fn)(Job *job)) { if (!job_started(job)) { |