file_locks

Documentation for acquire_lock

Functionality

This function obtains an exclusive file lock. It opens the file in write mode and applies a lock using fcntl, ensuring exclusive access.

Parameters

• lock_file_path: A string representing the file path used for locking.

Usage

• Purpose: To secure exclusive access to a file resource.

Example

import fcntl
lock = acquire_lock("/tmp/mylock.file")
# Perform critical operations
release_lock(lock)

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Documentation for release_lock

Functionality

This function releases a previously acquired file lock. It unlocks the file using fcntl and then closes the corresponding file object, ensuring that resources are freed.

Parameters

• lock_file: The file object that holds the acquired lock. This object is returned by a call to acquire_lock.

Usage

• Purpose: To safely remove an exclusive lock from a file and close the file resource after critical operations are completed.

Example

lock = acquire_lock("/tmp/mylock.file")
# Perform critical operations
release_lock(lock)