struct lock_sys_t{LockMutex mutex;hash_table_t*rec_hash;hash_table_t*prdt_hash;hash_table_t*prdt_page_hash;LockMutex wait_mutex;srv_slot_t*waiting_threads;srv_slot_t*last_slot;int n_waiting;};struct lock_t{trx_t*trx;UT_LIST_NODE_T(lock_t)trx_locks;dict_index_t*index;lock_t*h...
struct lock_sys_t{LockMutex mutex;hash_table_t* rec_hash;hash_table_t* prdt_hash;hash_table_t* prdt_page_hash;LockMutex wait_mutex;srv_slot_t* waiting_threads;srv_slot_t* last_slot;int n_waiting;}; struct lock_t {trx_t* trx;UT_LIST_NODE_T(lock_t) trx_locks;dict_index_t*...
blocking_lock_id: 被请求的锁 ID。 blocking_lock_type: 持有的锁类型。 blocking_lock_mode: 持有的锁模式。 sql_kill_blocking_query: 可以用来终止持有锁的查询的 SQL 命令。 sql_kill_blocking_connection: 可以用来终止持有锁的连接的 SQL 命令。 示例输出 执行SELECT * FROM sys.innodb_lock_waits;返回...
GRANT:这是SQL中用于授权的关键字。 EXECUTE:这表示被授权的权限类型,在这个上下文中,EXECUTE权限允许用户或角色执行指定的包、过程或函数。 ON sys.dbms_lock:指定授权的对象,这里是sys.dbms_lock包。sys是Oracle数据库中的一个内置架构,其中包含了多个系统级的程序和包,dbms_lock是这些系统程序之一,提供了锁定机制...
新的动态视图sys.dm_tran_locks能够返回系统中当前活动的锁管理器资源信息。这个视图返回的信息类型和sp_lock一样,但提供了更多细节。关键是这是一个视图,允许数据库管理员轻松的将其连接到其他表。 自定义sp_lock例子 USE MASTER GO CREATE PROCEDURE [dbo].[sp_Lock_Detail] ...
Testing procedure The test should pass. Issues/PRs references #20958has shown that changing implementation details ofSHELL_COMMAND()does affect the order of commands in thehelplist. ✔️PASSED abb666btests/sys/shell_lock: increase robustness of the test...
Innodb Lock-sys MySQL9.1.0 Source Code Documentation Innodb Lock-sys Introduction The Lock-sys orchestrates access to tables and rows. Each table, and each row, can be thought of as a resource, and a transaction may request access right for a resource. As two transactions operating on a ...
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SYS/BIOS怎么没有spin_lock的实现?Stephenson Ding Intellectual 370 points 在这里自旋锁该怎么实现呢?4 年多前 回复 Nancy Wang 4 年多前 TI__Guru** 110395 points sys/bios中没有spinlock,建议看一下Semaphore和gate是否符合需求。 www.ti.com/.../spruex3v.pdf 向上 0 True 向下 ...
SYS(2011) - Current Lock Status 發行項 2006/10/23 Returns the record or table lock status for the current work area.複製 SYS(2011) Return ValuesCharacterRemarksUnlike the FLOCK( ), LOCK( ), and RLOCK( ) functions, SYS(2011) doesn't attempt to lock the table or record....