when a row is locked due to anUPDATEor aSELECT ... FOR UPDATE, any other transaction will have to wait to access that locked row. In some use cases there is a need to either return immediately if a row is locked or ignore locked rows. A locking clause usingNOWAITwill never wait to...
In modern C++, the concurrency support library is designed to solve read and write data securely in thread operations that allow us to develop fastermulti-thread apps. This library includes built-in support for threads (std::thread), atomic operations (std::atomic), mutual exclusion (std::...
MySQL 8.0 deliversNOWAITandSKIP LOCKEDalternatives in the SQL locking clause. Normally, when a row is locked due to anUPDATEor aSELECT ... FOR UPDATE, any other transaction will have to wait to access that locked row. In some use cases there is a need to either return immediately if a ...
[IO] How to - Delete a file, keeping data in the stream? [Out Of Memory Error] while handling 400MB XML file [Solved] C# write to file without extension [Solved] Error MSSQL connection only when run with .Net core on Linux [SQL Server Native Client 11.0]Connection is busy with resul...
More typical uses of RCU may be found in listRCU.txt, arrayRCU.txt, and NMI-RCU.txt. struct foo { int a; char b; long c; }; DEFINE_SPINLOCK(foo_mutex); struct foo *gbl_foo; /* * Create a new struct foo that is the same as the one currently * pointed to by gbl_foo, ...
Windows is not supported, but if that's a requirement, Janus is known to work in the "Windows Subsystem for Linux" on Windows 10: do NOT trust repos that provide .exe builds of Janus, they are not official and will not be supported....
A device driver is a special code that interfaces a physical device into the system and exports it to the user-space processes using a well-defined API. In a UNIX-like OS, where everything is a file, the physical device is represented as a file. Then, the device driver implements all ...
SHOW ENGINE INNODB MUTEX output is removed. Comparable information can be generated by creating views on Performance Schema tables. The InnoDB Tablespace Monitor and InnoDB Table Monitor are removed. For the Table Monitor, equivalent information can be obtained from InnoDB INFORMATION_SCHEMA tables. ...
What's new and what changed in 2.9 New APIs: explicit_bzero, strnstr. New APIs: pthread_mutex_timedwait, pthread_rwlock_timedrdlock, pthread_rwlock_timedwrlock. New API: renameat2. Improved implementation of <elf.h>. strptime(3) supports %s (seconds since Epoch) now, analogue to strft...
New experimental ConcurrencyCheck rules for well-known standard library types from the<mutex>header. For more information, seeConcurrency Code Analysis in Visual Studio 2019. An updated partial implementation of theLifetime profile checker, which detects dangling pointers and references. For more informati...