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Qt Solutions Component: Locked File
The QtLockedFile class extends QFile with advisory locking
functions.
This class extends the QFile class with inter-process file locking
capabilities. If an application requires that several processes
should access the same file, QtLockedFile can be used to easily
ensure that only one process at a time is writing to the file, and
that no process is writing to it while others are reading it.
Version history:
2.0: - This is a port to Qt 4 of the latest Qt 3 version (1.1).
2.1: - Fix non-blocking lock() on Windows.
2.2: - Windows: Possible deadlock removed.
- Windows: Allow file names with paths.
- Windows: Compilation fix for MinGW.
2.3: - Windows: Bugfix; non-blocking lock attempt could cause
locking failures later.
2.4: - Misc. minor fixes.
- Windows: Reimplemented. Fixed issue where crashed processes
could hold on to a lock.
- LGPL release.
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