Regression: Jacksum 3.0.0 to 3.4.0 hangs while trying to read NTUSER.DAT on Microsoft Windows if more than one algo has been selected

[jonelo]

Describe the bug Jacksum 3.0.0 to 3.4.0 hangs while trying to read NTUSER.DAT on Microsoft Windows. Issue occurs in concurrency mode only, i. e. if more than one algo has been selected.

To Reproduce

C:\Users\Johann>jacksum34 -a md5+sha256 -V all -r 1 .
...
.\NTUSER.DAT (Der Prozess kann nicht auf die Datei zugreifen, da sie von einem anderen Prozess verwendet wird)
java.io.FileNotFoundException: .\NTUSER.DAT (Der Prozess kann nicht auf die Datei zugreifen, da sie von einem anderen Prozess verwendet wird)
        at java.base/java.io.FileInputStream.open0(Native Method)
        at java.base/java.io.FileInputStream.open(FileInputStream.java:219)
        at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)
        at net.jacksum.multicore.manyalgos.DataReader.run(DataReader.java:78)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)

process hangs.

Expected behavior it should not hang, but print out the error only and continue.

Jacksum: Error: .\NTUSER.DAT (Der Prozess kann nicht auf die Datei zugreifen, da sie von einem anderen Prozess verwendet wird)

Screenshots n/a

Environment (please complete the following information): n/a

Additional context n/a

[jonelo]

Workaround:

C:\Users\Johann>java -Djacksum.concurrency.manyalgos=false -jar \Applications\jacksum-3.4.0\jacksum-3.4.0.jar -a md5+sha256 -V all -r 1 .

[jonelo]

fixed.