File locks

Author(s): J. Gomez, D. Cabeza, M. Carro.

Version: 1.11#222 (2004/5/24, 13:8:7 CEST)

Version of last change: 1.7#159 (2001/11/27, 11:58:24 CET)

This module implements file locks: the ability to lock a fiel so that other processes cannot access it until the file is unlocked. It is, however, not working. The predicates do nothing. Proper implementation is planned for a near future.

• Usage and interface (file_locks)
• Documentation on exports (file_locks)
• Known bugs and planned improvements (file_locks)

Usage and interface (file_locks)

Documentation on exports (file_locks)

PREDICATE: lock_file/3:

Usage: lock_file(File, LockType, Result)

• Description: Tries to lock File with LockType and returns the result (either true or false) in Result.
• The following properties should hold at call time: File is an atom. (basic_props:atm/1) LockType is an atom. (basic_props:atm/1) Result is an atom. (basic_props:atm/1)

PREDICATE: unlock_file/2:

Usage: unlock_file(File, Result)

• Description: Tries to unlock File the result (either true or false) in Result.
• The following properties should hold at call time: File is an atom. (basic_props:atm/1) Result is an atom. (basic_props:atm/1)

Known bugs and planned improvements (file_locks)

• No doing anything helpful.

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