+ assert(hashmap_isempty(m->transaction_jobs));
+ assert(!m->transaction_anchor);
+}
+
+static void transaction_find_jobs_that_matter_to_anchor(Manager *m, Job *j, unsigned generation) {
+ JobDependency *l;
+
+ assert(m);
+
+ for (l = j ? j->subject_list : m->transaction_anchor; l; l = l->subject_next) {
+
+ /* This link does not matter */
+ if (!l->matters)
+ continue;
+
+ /* This name has already been marked */
+ if (l->object->generation == generation)
+ continue;
+
+ l->object->matters_to_anchor = true;
+ l->object->generation = generation;
+
+ transaction_find_jobs_that_matter_to_anchor(m, l->object, generation);
+ }
+}
+
+static bool types_match(JobType a, JobType b, JobType c, JobType d) {
+ return
+ (a == c && b == d) ||
+ (a == d && b == c);
+}
+
+static int types_merge(JobType *a, JobType b) {
+ if (*a == b)
+ return 0;
+
+ if (types_match(*a, b, JOB_START, JOB_VERIFY_STARTED))
+ *a = JOB_START;
+ else if (types_match(*a, b, JOB_START, JOB_RELOAD) ||
+ types_match(*a, b, JOB_START, JOB_RELOAD_OR_START) ||
+ types_match(*a, b, JOB_VERIFY_STARTED, JOB_RELOAD_OR_START) ||
+ types_match(*a, b, JOB_RELOAD, JOB_RELOAD_OR_START))
+ *a = JOB_RELOAD_OR_START;
+ else if (types_match(*a, b, JOB_START, JOB_RESTART) ||
+ types_match(*a, b, JOB_START, JOB_TRY_RESTART) ||
+ types_match(*a, b, JOB_VERIFY_STARTED, JOB_RESTART) ||
+ types_match(*a, b, JOB_RELOAD, JOB_RESTART) ||
+ types_match(*a, b, JOB_RELOAD_OR_START, JOB_RESTART) ||
+ types_match(*a, b, JOB_RELOAD_OR_START, JOB_TRY_RESTART) ||
+ types_match(*a, b, JOB_RESTART, JOB_TRY_RESTART))
+ *a = JOB_RESTART;
+ else if (types_match(*a, b, JOB_VERIFY_STARTED, JOB_RELOAD))
+ *a = JOB_RELOAD;
+ else if (types_match(*a, b, JOB_VERIFY_STARTED, JOB_TRY_RESTART) ||
+ types_match(*a, b, JOB_RELOAD, JOB_TRY_RESTART))
+ *a = JOB_TRY_RESTART;
+
+ return -EEXIST;