job: Add job_transition_to_ready()

The transition to the READY state was still performed in the BlockJob
layer, in the same function that sent the BLOCK_JOB_READY QMP event.

This patch brings the state transition to the Job layer and implements
the QMP event using a notifier called from the Job layer, like we
already do for other events related to state transitions.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>

1 files changed, 13 insertions, 3 deletions

diff --git a/job.c b/job.c
index aa4c746..b5bd51b 100644
--- a/job.c
+++ b/job.c
@@ -157,9 +157,7 @@ static int job_txn_apply(JobTxn *txn, int fn(Job *), bool lock)
     return rc;
 }
 
-
-/* TODO Make static once the whole state machine is in job.c */
-void job_state_transition(Job *job, JobStatus s1)
+static void job_state_transition(Job *job, JobStatus s1)
 {
     JobStatus s0 = job->status;
     assert(s1 >= 0 && s1 <= JOB_STATUS__MAX);
@@ -321,6 +319,7 @@ void *job_create(const char *job_id, const JobDriver *driver, JobTxn *txn,
     notifier_list_init(&job->on_finalize_cancelled);
     notifier_list_init(&job->on_finalize_completed);
     notifier_list_init(&job->on_pending);
+    notifier_list_init(&job->on_ready);
 
     job_state_transition(job, JOB_STATUS_CREATED);
     aio_timer_init(qemu_get_aio_context(), &job->sleep_timer,
@@ -380,6 +379,11 @@ static void job_event_pending(Job *job)
     notifier_list_notify(&job->on_pending, job);
 }
 
+static void job_event_ready(Job *job)
+{
+    notifier_list_notify(&job->on_ready, job);
+}
+
 void job_enter_cond(Job *job, bool(*fn)(Job *job))
 {
     if (!job_started(job)) {
@@ -799,6 +803,12 @@ static int job_transition_to_pending(Job *job)
     return 0;
 }
 
+void job_transition_to_ready(Job *job)
+{
+    job_state_transition(job, JOB_STATUS_READY);
+    job_event_ready(job);
+}
+
 static void job_completed_txn_success(Job *job)
 {
     JobTxn *txn = job->txn;