Contribution description Adds Linux-kernel-like wait queue for mutex-less condition signaling. Motivation Copy-paste from core/include/wait_queue.h: Wait queues enable lock-free, IRQ-safe condition...
Workspace synchronization waits Statistics relevant to processes synchronizing access to workspace. Each counter in the object contains the following instances: Expand table ItemDescription Average wait time (ms) Average time for the selected type of wait. Cumulative wait time (ms) per second Aggregate...
PG_THREAD_WAIT_STATUS allows you to test the block waiting status about the backend thread and auxiliary thread of the current instance.The waiting statuses in the wait_s
使用ZooKeeper的应用程序通常是利用同步原语(synchronization primitives)去实现它们自己的定制化需求,就像上面说的那样。这里,我们将展示如何用ZooKeeper实现锁,以表明它可以实现各种各样的通用同步原语。 最简单的锁实现使用“锁文件”。该锁由znode表示。为了获取锁,客户端尝试创建带有临时标志的指定znode。如果创建成功,...
As part of a class assignment that focuses on scheduling processes using blocking and locks, we are required to implement two kernel functions. int wait_event_interruptible(wait_queue_head_t q, CONDITION); void wake_up_all(wait_queue_head_t *q); ...
Note that even in the older xnu version, THREAD_RESTART was still a valid defined value for wait_result_t. In fact, you can see that it is returned in wait_queue_assert_wait64 of osfmk/kern/wait_queue.c when the queue becomes invalid. The difference is that in this older kernel vers...
wait data sync queue Waiting for putting the row-store data pages into the synchronization queue. flush data: [nodename](plevel), [phase] Waiting for sending data to the plevel thread of the node specified by nodename. If phase is included, the possible phase is wait quota, indicating th...
typedefstruct_D3DKMT_SETSYNCREFRESHCOUNTWAITTARGET{[in] D3DKMT_HANDLE hAdapter; [in, opt] D3DKMT_HANDLE hDevice; [in] D3DDDI_VIDEO_PRESENT_SOURCE_ID VidPnSourceId; [in] UINT TargetSyncRefreshCount; } D3DKMT_SETSYNCREFRESHCOUNTWAITTARGET; ...
wait data sync queue Waiting for putting the data pages that are in the row-store into the synchronization queue. flush data: [nodename](plevel), [phase] Waiting for sending data to the plevel thread of the node specified by nodename. If phase is included, the possible phase is wait ...
Memory grant queue waits 等待内存授予的进程的统计信息。 Network IO waits 与等待网络 I/O 相关的统计信息。 Non-Page latch waits 与非页闩锁相关的统计信息。 Page IO latch waits 与页I/O 闩锁相关的统计信息。 Page latch waits 与页闩锁(不包括 I/O 闩锁)相关的统计信...