ignore file not found when remove file

[Cologler]

fixes #4

[tkratky]

Hello, Who is capable to merge this Pull Request, please? Are there any requirements before the merge? 🙂

[hkcomori]

What is the reason why this pull request was closed without merging?
I want this change, because posix-ipc does not support Windows (without Cygwin).

[Cologler]

@hkcomori Whatever the PR is merge or not, the package (ilock) still had a huge bug on Linux:

process 1	process 2	process 3
own the lock: {sha256}.ilock (inode is 1)
	open {sha256}.ilock (inode is 1)
unlock and delete {sha256}.ilock
		open {sha256}.ilock (inode is 2)
	lock {sha256}.ilock	lock {sha256}.ilock

now both process 2 and process 3 got the lock at the same time.

[hkcomori]

Oh, I see.
We should not unlink the lock file on Linux.
However, in that case, the lock file remains even after all the processes are completed...

[Cologler]

@hkcomori If you want to remove the lock file on Linux, there is a solution at StackOverflow (https://stackoverflow.com/questions/17708885/flock-removing-locked-file-without-race-condition).

I don't care about the lock file, so I am using https://github.com/benediktschmitt/py-filelock now.

[hkcomori]

Thanks, py-filelock solved my problem.