|LOCK_NB

WhencmdisLOCK_SHorLOCK_EX,itcanalsobebitwiseORedwithLOCK_NBtoavoidblockingonlockacquisition.IfLOCK_NBisusedandthelockcannotbe ...,Acalltoflock()mayblockifanincompatiblelockisheldbyanotherprocess.Tomakeanonblockingrequest,includeLOCK_NB(byORing)withanyoftheabove ...,[dpdk-dev][PATCH]eal/linux:addoperationLOCK_NBtoflock().Burakov,Anatolyanatoly.burakovatintel.com.ThuApr1516:24:01CEST2021.,2018年...

The fcntl and ioctl system calls

When cmd is LOCK_SH or LOCK_EX , it can also be bitwise ORed with LOCK_NB to avoid blocking on lock acquisition. If LOCK_NB is used and the lock cannot be ...

flock(2)

A call to flock() may block if an incompatible lock is held by another process. To make a nonblocking request, include LOCK_NB (by ORing) with any of the above ...

[dpdk-dev] [PATCH] eallinux

[dpdk-dev] [PATCH] eal/linux: add operation LOCK_NB to flock(). Burakov, Anatoly anatoly.burakov at intel.com. Thu Apr 15 16:24:01 CEST 2021.

Python - fcntl.flock(fd, op) 檔案鎖應用範例

2018年5月8日 — 以下是利用 fcntl.flock(fd, op) 建立flock 的範例，可以看到主要是 fcntl.flock(f, fcntl.LOCK_EX) 中的參數 fcntl.LOCK_EX | fcntl.LOCK_NB 建立 ...

flock

LOCK_UN 释放锁定（无论共享或独占）。如果不希望flock() 在锁定时堵塞，则是 LOCK_NB （Windows 上还不支持）。

Warning: flock()

2019年10月8日 — You are not allowed to use LOCK_NB alone. LOCK_NB must be used together with an operation. e.g. if(!flock($fp, LOCK_EX | LOCK_NB)) ..

What does LOCK_NB mean in flock?

2011年3月31日 — LOCK_NB means non-blocking. Usually when you try to lock a file, your PHP script execution will stop. The call to flock() then blocks it ...

Linux文件锁flock

2015年1月30日 — LOCK_UN，释放锁；进程使用flock尝试锁文件时，如果文件已经被其他进程锁住，进程会被阻塞直到锁被释放掉，或者在调用flock的时候，采用LOCK_NB参数，在 ...

flock

2010年9月15日 — LOCK_UN 释放锁定（无论共享或独占）。 It is also possible to add LOCK_NB as a bitmask to one of the above operations, if flock() should not block ...