Mercurial > hg > graal-jvmci-8
changeset 23077:68de83e1d912
8085965: VM hangs in C2Compiler
Summary: CMSClassUnloadingEnabled and ExplicitGCInvokesConcurrentAndUnloadsClasses should be disabled when -Xnoclassgc is specified
Reviewed-by: jmasa, kbarrett
author | poonam |
---|---|
date | Wed, 17 Jun 2015 05:56:43 -0700 |
parents | 91a1be057e0a |
children | 9d514a2d02ff |
files | src/share/vm/memory/genMarkSweep.cpp src/share/vm/runtime/arguments.cpp |
diffstat | 2 files changed, 7 insertions(+), 1 deletions(-) [+] |
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--- a/src/share/vm/memory/genMarkSweep.cpp Thu Jun 04 23:11:44 2015 -0700 +++ b/src/share/vm/memory/genMarkSweep.cpp Wed Jun 17 05:56:43 2015 -0700 @@ -211,7 +211,7 @@ false, // Younger gens are not roots. true, // activate StrongRootsScope GenCollectedHeap::SO_None, - GenCollectedHeap::StrongRootsOnly, + ClassUnloading, &follow_root_closure, &follow_root_closure, &follow_cld_closure);
--- a/src/share/vm/runtime/arguments.cpp Thu Jun 04 23:11:44 2015 -0700 +++ b/src/share/vm/runtime/arguments.cpp Wed Jun 17 05:56:43 2015 -0700 @@ -1372,6 +1372,12 @@ if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); } + + if (!ClassUnloading) { + FLAG_SET_CMDLINE(bool, CMSClassUnloadingEnabled, false); + FLAG_SET_CMDLINE(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false); + } + if (PrintGCDetails && Verbose) { tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", (unsigned int) (MarkStackSize / K), (uint) (MarkStackSizeMax / K));