Mercurial > hg > truffle
changeset 20477:7dca5ed0e13d
8046210: Missing memory barrier when reading init_lock
Reviewed-by: fparain, dcubed, mdoerr
Contributed-by: Bill Pittore <bill.pittore@oracle.com>
| author | dholmes |
|---|---|
| date | Tue, 02 Sep 2014 21:27:08 -0400 |
| parents | 20c3c41c2b99 |
| children | 00448aa81791 |
| files | src/share/vm/oops/instanceKlass.cpp |
| diffstat | 1 files changed, 2 insertions(+), 0 deletions(-) [+] |
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--- a/src/share/vm/oops/instanceKlass.cpp Fri Sep 12 13:27:05 2014 -0700 +++ b/src/share/vm/oops/instanceKlass.cpp Tue Sep 02 21:27:08 2014 -0400 @@ -504,6 +504,8 @@ oop InstanceKlass::init_lock() const { // return the init lock from the mirror oop lock = java_lang_Class::init_lock(java_mirror()); + // Prevent reordering with any access of initialization state + OrderAccess::loadload(); assert((oop)lock != NULL || !is_not_initialized(), // initialized or in_error state "only fully initialized state can have a null lock"); return lock;