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hpxwj's avatar
hpxwj
Copper Contributor
Nov 17, 2021
Solved

Why several system processes can access a file at the same time in Win10?

 
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  • Kuinox's avatar
    Kuinox
    Nov 23, 2021

    hpxwj 

    Check this StackOverflow post: https://stackoverflow.com/questions/13420057/view-open-file-handlers-for-a-process-on-windows

Kuinox's avatar
Kuinox
Copper Contributor
Nov 17, 2021

Hello hpxwj,

When a process access a file, it ask the OS to lock for it. 

Often, the processes does not ask for an exclusive lock and multiple processes can access the files at the sames time. 
https://en.wikipedia.org/wiki/File_locking#In_Microsoft_Windows

For example, one process can lock a file for write, while allowing any other process to read the file.

 

  • hpxwj's avatar
    hpxwj
    Copper Contributor
    Nov 23, 2021
    Hello,Kuinox,
    How can I check which process access this file actually?
    • Kuinox's avatar
      Kuinox
      Copper Contributor
      Nov 23, 2021

      hpxwj 

      Check this StackOverflow post: https://stackoverflow.com/questions/13420057/view-open-file-handlers-for-a-process-on-windows

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