llvm dev - Aug 2017 - tsan_interface_java.h; any users? reviving https://github.com/google/java-thread-sanitizer?

Hello,

I've been looking at ThreadSanitizer in
https://github.com/llvm-mirror/compiler-rt and I noticed some Java-related
files. Is there a version of ThreadSanitizer build on top of that, which I
could use to sanitize my Java programs? I could not find any.

I found https://github.com/google/java-thread-sanitizer, which seems to be
now abandoned. It used to work with ThreadSanitizer v1. Has anybody ever
tried to make it work with the current ThreadSanitizer?

Thanks,
-- 
Jiří Daněk
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+Dmitry, Kostya
> On Aug 30, 2017, at 12:51 AM, Jiri Danek via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> Hello,
> 
> I've been looking at ThreadSanitizer in
https://github.com/llvm-mirror/compiler-rt
<https://github.com/llvm-mirror/compiler-rt> and I noticed some
Java-related files. Is there a version of ThreadSanitizer build on top of that,
which I could use to sanitize my Java programs? I could not find any.
> 
> I found https://github.com/google/java-thread-sanitizer
<https://github.com/google/java-thread-sanitizer>, which seems to be now
abandoned. It used to work with ThreadSanitizer v1. Has anybody ever tried to
make it work with the current ThreadSanitizer?
> 
> Thanks,
> -- 
> Jiří Daněk
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
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>
> On Aug 30, 2017, at 12:51 AM, Jiri Danek via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
> I found https://github.com/google/java-thread-sanitizer, which seems to
> be now abandoned. It used to work with ThreadSanitizer v1. Has anybody ever
> tried to make it work with the current ThreadSanitizer?
>
> I gave it a try and bending java-thread-sanitizer to my needs seems doable
so far:

1) making java-thread-sanitizer compile with Gradle and run its example
under Java 8, check (although I have to pass -noverify to JVM)
2) LD_PRELOADing libtsan.so to JVM, accessing it from JNA, check
3) reproducing one tsan test (tests/rtl/tsan_mop.cc) with Java threads and
made up pointers passed to __tsan_write*(), check
3) disabling Garbage Collection in JVM (just to possibly simplify things)
cannot be done, but it should not matter, because System.identityHashcode
should be unchanging, so check

With that, just put that all together and I should have a sanitizer for
java.

Only problem so far is that I don't have alternative for __tsan_func_entry,
so I cannot have reasonable stacktraces in TSan error messages. I should be
able to work around it during Java code instrumentation, to save myself
enough info to be able to make sense of the impoverished TSan messages.

Cheers,
-- 
Jiří Daněk
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