JournaledFile 1.0 review

JournaledFile is a library that supports journaled transactional files.

License: GPL OS: Windows Vista / 7 / 8 / 10 File size: 45K Developer: Steve Dekorte Price: $0.00 Updated: 13 Nov 2005

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JournaledFile is a library that supports journaled transactional files.
JournaledFile allows writes to be done to a file without risking file corruption in the event that the process or OS crashes or the power goes out.

Here are some key features of "JournaledFile":
for each write, it logs the file position, length of write and the data to a log file (file.log)

when JFile_sync() is called:
* it sets the log header status to "committed"
* the log writes are performed on output file
* the log file is truncated and it's status set to "uncommitted"

when JFile is opened, if it finds a log file then:
* if the log status is "committed":
it assumes the log did not complete it's write so it
writes the log to the file again and removes the log and lock

* if the log status is "uncommitted":
it assumes the log is not complete and removes it.