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Mark Thomas commented on DAEMON-398: ------------------------------------ I was using Windows 7. I think it would be useful to add a table to the issue description to track which combinations work and which do not. That should help us track down exactly where the problem lies. I'll get something set-up. Help populating it would be much appreciated. I'm not looking to populate all possible combinations - just enough to figure out where we should be looking for a root cause. > Java 11 jvm.dll startup messages not available on stdout/stderr when > compiling with newer Visual Studio > ------------------------------------------------------------------------------------------------------- > > Key: DAEMON-398 > URL: https://issues.apache.org/jira/browse/DAEMON-398 > Project: Commons Daemon > Issue Type: Improvement > Components: Procrun > Affects Versions: 1.1.1 > Environment: Windows > Reporter: Gerwin > Priority: Major > Attachments: set-stdout.patch > > > *Steps to reproduce* > # Install Java 11 > # Install prunsrv.exe using jvm.dll and specify stdout and stderr file. > # Using prunmgr, add a Java Option '-invalid' > # Start the service > # stdout and stderr files are empty! > # Install Java 10 > # Using prunmgr, switch the Java Virtual Machine to Java 10 > # Start the service > # {code:none|title=stderr} > Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option MaxPermSize; > support was removed in 8.0 > Unrecognized option: -invalid > {code} > *Analysis* > * It works for Java 8, 9 and 10, fails for 11, 12 and 13-ea. > * I followed this guide: [Redirecting standard I/O from within a > program|https://jdebp.eu/FGA/redirecting-standard-io.html] (see > [^set-stdout.patch]), but it didn't help. > * Even when I compile prunsrv with Visual Studio 2017 15.9 (linker 14.16) and > test with Java 13-ea, which is also compiled with the same version (hence > using the same C-runtime library) it does not work. > * The guide ends with what the probably causing the issue: > {quote} > ... the one problem that remains with redirecting Win32 file handles: > It doesn't affect anything in the program using a different C runtime library > (such as a third-party DLL, for example). > {quote} > * Setting registry value Log/LogJniMessages=1, which is using the > {{vfprintf}} option of the > [JNI_CreateJavaVM|https://docs.oracle.com/en/java/javase/11/docs/specs/jni/invocation.html#jni_createjavavm] > does not help. Maybe because is is added after the user-specified Java > Options? > *Ideas* > # Make {{vfprintf}} the first parameter > Downside of {{vfprintf}} is that it is hard to distinct between stdout and > stderr. Maybe make a JNI call to {{System.out}} and {{System.err}} to be able > to recognize the {{*File}} pointer and map to stdout and stderr accordingly. > And I think that {{javajni.c/apxJavaSetOut()}} should not be required. > # Log a bug for OpenJDK and try to get it fixed. -- This message was sent by Atlassian JIRA (v7.6.3#76005)