On 2017-12-05 13:03, David Holmes wrote:
Hi Magnus,
On 5/12/2017 8:49 PM, Magnus Ihse Bursie wrote:
We mistakenly use -XX:-UnlockDiagnosticVMOptions instead of
-XX:+UnlockDiagnosticVMOptions in a ADD_JVM_ARG_IF_OK call. This
means that the test will always fail and the arguments will never be
added to the command line.
Since this has been the case all time along, it's probably not that
important, but it was added to keep down the logging when using a
debug build as boot jdk, which has probably not been tested that much
either.
LogVMOutput will only be turned on in a debug build if you also enable
specific (mostly debug only) log/print/trace options.
I thought that these extra debug options were enabled by default in
debug build, and that required this action to disable them. Otherwise it
doesn't really make sense.
We should either fix this or remove the arguments completely.
Bug: https://bugs.openjdk.java.net/browse/JDK-8193055
Patch inline:
diff --git a/make/autoconf/boot-jdk.m4 b/make/autoconf/boot-jdk.m4
--- a/make/autoconf/boot-jdk.m4
+++ b/make/autoconf/boot-jdk.m4
@@ -354,7 +354,7 @@
AC_MSG_CHECKING([flags for boot jdk java command] )
# Disable special log output when a debug build is used as Boot
JDK...
- ADD_JVM_ARG_IF_OK([-XX:-PrintVMOptions
-XX:-UnlockDiagnosticVMOptions
-XX:-LogVMOutput],boot_jdk_jvmargs,[$JAVA])
+ ADD_JVM_ARG_IF_OK([-XX:-PrintVMOptions
-XX:+UnlockDiagnosticVMOptions
-XX:-LogVMOutput],boot_jdk_jvmargs,[$JAVA])
Fix is fine. But you could probably remove them too. Do you recall why
this was added? It may relate to something now migrated to Unified
Logging.
At first I thought that it was introduced as part of JDK-8010767, but
that only shuffled it around a bit. Going full Indiana Jones I've dug
all the way to the bottom of the repo. It was introduced by the very
first build-infra incarnation. :-)
So, I'd say, we should probably remove it instead. Updating my webrev:
diff --git a/make/autoconf/boot-jdk.m4 b/make/autoconf/boot-jdk.m4
--- a/make/autoconf/boot-jdk.m4
+++ b/make/autoconf/boot-jdk.m4
@@ -353,9 +353,6 @@
AC_MSG_CHECKING([flags for boot jdk java command] )
- # Disable special log output when a debug build is used as Boot JDK...
- ADD_JVM_ARG_IF_OK([-XX:-PrintVMOptions -XX:-UnlockDiagnosticVMOptions
-XX:-LogVMOutput],boot_jdk_jvmargs,[$JAVA])
-
# Force en-US environment
ADD_JVM_ARG_IF_OK([-Duser.language=en
-Duser.country=US],boot_jdk_jvmargs,[$JAVA])
/Magnus
David
-----
# Force en-US environment
ADD_JVM_ARG_IF_OK([-Duser.language=en
-Duser.country=US],boot_jdk_jvmargs,[$JAVA])
/Magnus
