[SR-7241] libdispatch: queues getting background prio #660
Description
| Previous ID | SR-7241 |
| Radar | None |
| Original Reporter | Kurkin (JIRA User) |
| Type | Bug |
Environment
linux without pthread_workqueue_init, so HAVE_PTHREAD_WORKQUEUE_QOS is 0
Additional Detail from JIRA
| Votes | 0 |
| Component/s | libdispatch |
| Labels | Bug |
| Assignee | None |
| Priority | Medium |
md5: 713ccb4651173e9742d05928621b4bd0
Issue Description:
dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);goes to
dispatch_queue_t dispatch_get_global_queue(long priority, unsigned long flags) { if (flags & ~(unsigned long)DISPATCH_QUEUE_OVERCOMMIT) { return DISPATCH_BAD_INPUT; } dispatch_qos_t qos = _dispatch_qos_from_queue_priority(priority); <--- #if !HAVE_PTHREAD_WORKQUEUE_QOS if (qos == QOS_CLASS_MAINTENANCE) { qos = DISPATCH_QOS_BACKGROUND; } else if (qos == QOS_CLASS_USER_INTERACTIVE) { qos = DISPATCH_QOS_USER_INITIATED; } #endif if (qos == DISPATCH_QOS_UNSPECIFIED) { return DISPATCH_BAD_INPUT; } return _dispatch_get_root_queue(qos, flags & DISPATCH_QUEUE_OVERCOMMIT); } goes to
_dispatch_qos_from_queue_priority where DISPATCH_QUEUE_PRIORITY_HIGH mapped to DISPATCH_QOS_USER_INITIATED(5) and DISPATCH_QOS_USER_INITIATED(5) is equal to QOS_CLASS_MAINTENANCE(5) and we are getting queue with wrong prio
Expected Results:
High prio queue
Actual Results:
Background prio queue
Version/Build:
master libdispatch