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RishiGupta12 / SerialPundit

Serial port communication in Java - FTDI D2XX, HID API, X/Y modem
GNU Affero General Public License v3.0
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Application Crash when starting multiple instance even using new prebuilt releases #20

Closed combat007 closed 7 years ago

combat007 commented 7 years ago

Hi Thanks for maintaining this great library. I Imported the serilapundit application "serial terminal emulator" in my eclipse workspace, and opened two instance. As soon as I clicked open button selecting one of the port the other instance terminated, throwing a fatal error and producing an error file. I tried it on Windows as well as on Linux both 32bit and 64bit platform and the problem is same. I am attaching the eclipse console output and the generated error file. Kindly look into the matter.

Eclipse Console Output:-

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A fatal error has been detected by the Java Runtime Environment:

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SIGSEGV (0xb) at pc=0x00003986, pid=8279, tid=1742400320

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JRE version: OpenJDK Runtime Environment (7.0_91-b02) (build 1.7.0_91-b02)

Java VM: OpenJDK Server VM (24.91-b01 mixed mode linux-x86 )

Derivative: IcedTea 2.6.3

Distribution: Ubuntu 14.04 LTS, package 7u91-2.6.3-0ubuntu0.14.04.1

Problematic frame:

C 0x00003986

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Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again

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An error report file with more information is saved as:

/workspace/Serial terminal emulator/hs_err_pid8279.log

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If you would like to submit a bug report, please include

instructions on how to reproduce the bug and visit:

http://icedtea.classpath.org/bugzilla

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hs_err_pid8279.log.zip

RishiGupta12 commented 7 years ago

I was not in India, just came back. I will look and get back to you. Were you running BOth the instances from within eclipse or how two instances were run.

combat007 commented 7 years ago

Hi nice to see you back.

The crash thing is same if I run it via eclipse or I make it a runnable jar from eclipse and run it on the system platform using the command "java -jar " on Linux or "Open with Java Runtime" on Windows. Whenever I open two instance as soon as I Open the connection the first instance terminates.

RishiGupta12 commented 7 years ago

Hi, The demo app uses default constructor scm = new SerialComManager(); in file SerialTerminalApp.java When two instances are run 2nd override the shared libraries saved by 1st instance on harddisk therefore crash will occur. Please use another constructor : SerialComManager(String loadedLibName, String directoryPath, final boolean createDirectory, boolean hotDeploy) specifying 1st 3 arguments as needed.

combat007 commented 7 years ago

Great

It worked like a charm...