[PATCH] Windows 32-bit DLL name decoration (original) (raw)

Magnus Ihse Bursie magnus.ihse.bursie at oracle.com
Wed Dec 12 12:58:27 UTC 2018

On 2018-12-12 12:35, Alan Bateman wrote:

On 12/12/2018 11:14, Magnus Ihse Bursie wrote:

:

I searched the code for "jdwpTransportOn" to see of there was any corresponding OnUnload function (or other), but could not find any. That's right, an unload wasn't needed when that SPI was originally added but could be added in the event that some future debugger agent need it. The SPI is a supported/documented JDK-specific mechanism, its "spec" is hosted here: https://docs.oracle.com/en/java/javase/11/docs/specs/jdwp/jdwp-transport.html ... yet in all that time, we have not fully supported the spec on Windows 32. :-( (We never discovered this because of lack of testing, I presume, and that our internal usage empoyed a questonable workaround.)

I see this thread is touching on the functions exported by libjli. This library is part of the launcher and shouldn't be used directly by anything outside of the JDK. However we have to be careful because JavaFX javapackager tool has been using it. There's a JEP to bring a similar tool, jpackage in the current proposal, that will supersede it but in the mean time we need to be careful not to break it. A second issue is that the libjli is listed in the property list (Info.plist) on macOS. This came from Apple in 7u4 and periodically things show up that are using it, e.g. that recent breakage with Eclipse that was never fully diagnosed but we think it was using Info.plist. The latest patch, as suggested, will not modify JLI, but instead fix the broken behaviour of JDWP on Windows 32.

/Magnus

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