On 12/05/2020 1:06 am, dmytro sheyko wrote:
Hi,

I think it would be very convenient for app developers if JVM were able to create intermediate directories to gc.log file if they do not exist.

You can file a RFE for that, but personally I don't think it is something the VM should do.

Cheers,
David

I.e.
  $ if [ -f logs/gc.log ]; then echo "log file exists"; else echo "log file does not exist"; fi
   log file does not exist

  $ if [ -d logs ]; then echo "log directory exists"; else echo "log directory does not exist"; fi
   log directory does not exist

   $ java -Xlog:"gc*:file=logs/gc.log" -version
   ...

  $ if [ -d logs ]; then echo "log directory exists"; else echo "log directory does not exist"; fi
   log directory exists

  $ if [ -f logs/gc.log ]; then echo "log file exists"; else echo "log file does not exist"; fi
   log file exists

Thanks,
Dmytro

On Fri, May 8, 2020 at 8:31 PM Harold Seigel <harold.sei...@oracle.com <mailto:harold.sei...@oracle.com>> wrote:

    Hi,

    Please review this fix for JDK-8244105.  The fix continues program
execution even when specified logging options are invalid. Previously, invalid logging options terminated the program.  Now, a
    warning is issued.  For example:

         > java -Xlog:"gc*:file=/dont/exist" -version
        [0.001s][error][logging] Error opening log file '/dont/exist':
        No such file or directory
        [0.001s][error][logging] Initialization of output
        'file=/dont/exist' using options '(null)' failed.
        Java HotSpot(TM) 64-Bit Server VM warning: Invalid -Xlog option
        '-Xlog:gc*:file=/dont/exist', see error log for details.

        java version "15-internal" 2020-09-15
        Java(TM) SE Runtime Environment (fastdebug build
        15-internal+0-2020-05-08-1313404.hseigel.bug8244105)
        Java HotSpot(TM) 64-Bit Server VM (fastdebug build
        15-internal+0-2020-05-08-1313404.hseigel.bug8244105, mixed mode,
        sharing)

    Open Webrev:
    http://cr.openjdk.java.net/~hseigel/bug_8244105/webrev/index.html

    JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8244105

    The fix was regression tested by running Mach5 tiers 1 and 2 tests
    and builds on Linux-x64, Solaris, Windows, and Mac OS X and by
    running Mach5 tiers 3-5 tests on Linux-x64.

    Thanks, Harold


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