Add variant of mutex based on flock #80
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src/FileMutex.php
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| { | ||
| // Try to create the lock file. If the file already exists, someone else | ||
| // has the lock, so set an asynchronous timer and try again. | ||
| $f = \fopen($this->fileName, 'c'); |
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This is a one-time cost, not really worth adding a touch here imo
src/FileMutex.php
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| $lock = new Lock($this->release(...)); | ||
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| $file->close(); | ||
| $lock = new Lock(fn () => \flock($f, LOCK_UN)); |
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This will block for a short duration, no?
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I considered adding a variant that used parallel but decided that the overhead to communicate to/from the IPC worker will be way worse than that of a single syscall that returns immediately.
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The disadvantage is that these files will stay in the filesystem. We should likely ship it as a new implementation rather than replacing the existing one? |
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I believe there is no reason to add yet another implementation instead of fixing the existing broken one. |
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The fact that lockfiles aren't deleted is not a downside, it's precisely the reason why the new implementation is better than the old one. |
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That totally depends on the usage of the library. If you're using lots of dynamic files for locks, they'll quickly pile up now. |
danog
changed the title
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Split the new mutex into a separate class. |
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Superseded by #87. |
3 participants
Fixes #79