FileNotFoundException on 2.10.4 while starting two apps using the same dependency in the same ide from time to time

[pseudo555]

Hello,

I'm using JSerialComm in two differenty java 8 x64 application on win 10 22h2.
Both application are launched by eclipse neon.

In the second application i start, i see the following errror :

java.io.FileNotFoundException: C:\Users\pdelco\AppData\Local\Temp\jSerialComm.\2.10.4\jSerialComm.dll (Le processus ne peut pas accéder au fichier car ce fichier est utilisé par un autre processus)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(FileOutputStream.java:270)
at java.io.FileOutputStream.(FileOutputStream.java:213)
at java.io.FileOutputStream.(FileOutputStream.java:162)
at com.fazecast.jSerialComm.SerialPort.(SerialPort.java:240)
at fr.def.iss.ssiutils.serial.SerialManager.getAllAvailablePorts(SerialManager.java:247)
at fr.def.iss.logdiag.view.display.ultraTerminal.utils.UltraTerminalUtils.isNoSerialPortFound(UltraTerminalUtils.java:72)
at fr.def.iss.logdiag.view.display.homepage.LogDiagHomePageBuilder.innerRefresh(LogDiagHomePageBuilder.java:344)
at fr.def.iss.ultima4j.view.display.homepage.AbstractHomePage.refreshNode(AbstractHomePage.java:179)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.setContentInMainDisplay(AbstractBaseBuilder.java:290)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.changeDisplayEnd(AbstractBaseBuilder.java:271)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.changeDisplay(AbstractBaseBuilder.java:250)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.changeDisplay(AbstractBaseBuilder.java:230)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.buildGui(AbstractBaseBuilder.java:162)
at fr.def.iss.logdiag.LogDiagApp.start(LogDiagApp.java:160)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$163(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$176(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$174(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$175(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$149(Unknown Source)
at java.lang.Thread.run(Thread.java:745)

Ligne 240 is
FileOutputStream destinationFileContents = new FileOutputStream(tempNativeLibrary);
And is in a try catch block.

This error is completely invisible for caller, as catch block only dump the stacktrace in the err output (which mean logging application won't be able to catch that part is not configured to do so) and the following block, managing libraryLoaded == false, is not applied here, as the dll file was found.

For me, there is (at least) two fix to be done to handle this error:

• don't use the same temporary folder (like JNA does).
• manage this exception properly (i don't know if catch block should set libraryLoaded to false, or if another boolean should be created to deal with this peculiar case).

Note:
Le processus ne peut pas accéder au fichier car ce fichier est utilisé par un autre processus
Means
The process cannot access the file because it is being used by another process

[pseudo555]

Note:

• v2.11.0 and the commit "Don't delete jSerialComm dir before every load" may fix the "don't use the same temporary folder" part.
• v2.11.0 doesn't work at all in my case, JVM is closed prematurely. i'll try with the snapshot i found in Upgrade from 2.10.4 to 2.11 causes jvm to crash #555.

[pseudo555]

I try, still doesn't work in my usecase:

java.io.FileNotFoundException: C:\Users\pdelco\AppData\Local\Temp\jSerialComm\2.11.1-a8a307d-SNAPSHOT\jSerialComm.dll (Le processus ne peut pas accéder au fichier car ce fichier est utilisé par un autre processus)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(FileOutputStream.java:270)
at java.io.FileOutputStream.(FileOutputStream.java:213)
at java.io.FileOutputStream.(FileOutputStream.java:162)
at com.fazecast.jSerialComm.SerialPort.(SerialPort.java:244)
at fr.def.iss.ssiutils.serial.SerialManager.getAllAvailablePorts(SerialManager.java:247)
at fr.def.iss.logdiag.view.display.ultraTerminal.utils.UltraTerminalUtils.isNoSerialPortFound(UltraTerminalUtils.java:72)
at fr.def.iss.logdiag.view.display.homepage.LogDiagHomePageBuilder.innerRefresh(LogDiagHomePageBuilder.java:344)
at fr.def.iss.ultima4j.view.display.homepage.AbstractHomePage.refreshNode(AbstractHomePage.java:179)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.setContentInMainDisplay(AbstractBaseBuilder.java:290)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.changeDisplayEnd(AbstractBaseBuilder.java:271)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.changeDisplay(AbstractBaseBuilder.java:250)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.changeDisplay(AbstractBaseBuilder.java:230)
at fr.def.iss.ultima4j.view.display.global.AbstractBaseBuilder.buildGui(AbstractBaseBuilder.java:162)
at fr.def.iss.logdiag.LogDiagApp.start(LogDiagApp.java:160)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$163(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$176(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$174(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$175(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$149(Unknown Source)
at java.lang.Thread.run(Thread.java:745)

[pseudo555]

It seems, this filenotfound error has no impact on the software behavior.
by that i means even if this error is displayed in err flux, the application works as intended, as if another retry later worked.