On 2019-02-27 16:51, Erik Joelsson wrote:
Hello Andrew,
On 2019-02-26 12:09, Andrew Haley wrote:
I'm seeing a crash in the javac server while building openjdk.
We are seeing this too intermittently.
I want to run the exact same command that started the server running,
but even with LOG=debug I cannot find the command line that starts
it. The command seems not to be there at all.
So, how exactly does the javac server get started, and how do I find
the command line that started it?
The server is started lazily by the first javac invocation that needs
it. There is a parameter given to javac that describes how it should
be started, but to get the exact command line, you would have to
instrument javac java source. You should be able to add additional
parameters to that JVM, at least by editing spec.gmk, that could help
you with diagnostics.
And, incidentally, given that I'f configured with --disable-sjavac,
why is the build running a javac server? Thanks.
The "smart javac" and the javac server are not one the same. The
server was introduced in sjavac, but the server part was later ported
over to javac proper (I think). So now we have two configure
arguments, --enable-sjavac and --disable-javac-server. The latter is
what you are looking for.
I think we should really get rid of sjavac since the relevant benefits
are already present in the default build, with the javac server and
the dependency plugin. The only possible benefit of sjavac today would
be more fine grained incremental build support, but I doubt it works
very well given that it's not being maintained.
Agree. I opened https://bugs.openjdk.java.net/browse/JDK-8219973.
/Magnus
/Erik
