1 files changed, 59 insertions, 0 deletions
diff --git a/job.c b/job.c
index 1b8cba15ff..fd10b1d267 100644
--- a/job.c
+++ b/job.c
@@ -341,6 +341,65 @@ void job_start(Job *job)
     aio_co_enter(job->aio_context, job->co);
 }
 
+/* Assumes the block_job_mutex is held */
+static bool job_timer_not_pending(Job *job)
+{
+    return !timer_pending(&job->sleep_timer);
+}
+
+void job_pause(Job *job)
+{
+    job->pause_count++;
+}
+
+void job_resume(Job *job)
+{
+    assert(job->pause_count > 0);
+    job->pause_count--;
+    if (job->pause_count) {
+        return;
+    }
+
+    /* kick only if no timer is pending */
+    job_enter_cond(job, job_timer_not_pending);
+}
+
+void job_user_pause(Job *job, Error **errp)
+{
+    if (job_apply_verb(job, JOB_VERB_PAUSE, errp)) {
+        return;
+    }
+    if (job->user_paused) {
+        error_setg(errp, "Job is already paused");
+        return;
+    }
+    job->user_paused = true;
+    job_pause(job);
+}
+
+bool job_user_paused(Job *job)
+{
+    return job->user_paused;
+}
+
+void job_user_resume(Job *job, Error **errp)
+{
+    assert(job);
+    if (!job->user_paused || job->pause_count <= 0) {
+        error_setg(errp, "Can't resume a job that was not paused");
+        return;
+    }
+    if (job_apply_verb(job, JOB_VERB_RESUME, errp)) {
+        return;
+    }
+    if (job->driver->user_resume) {
+        job->driver->user_resume(job);
+    }
+    job->user_paused = false;
+    job_resume(job);
+}
+
+
 typedef struct {
     Job *job;
     JobDeferToMainLoopFn *fn;