1.1 --- a/src/share/vm/ci/ciObjectFactory.cpp Tue Jul 01 09:03:55 2014 +0200
1.2 +++ b/src/share/vm/ci/ciObjectFactory.cpp Mon Jul 07 10:12:40 2014 +0200
1.3 @@ -46,6 +46,9 @@
1.4 #include "oops/oop.inline.hpp"
1.5 #include "oops/oop.inline2.hpp"
1.6 #include "runtime/fieldType.hpp"
1.7 +#if INCLUDE_ALL_GCS
1.8 +# include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
1.9 +#endif
1.10
1.11 // ciObjectFactory
1.12 //
1.13 @@ -374,6 +377,37 @@
1.14 return NULL;
1.15 }
1.16
1.17 +// ------------------------------------------------------------------
1.18 +// ciObjectFactory::ensure_metadata_alive
1.19 +//
1.20 +// Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
1.21 +// This is primarily useful for metadata which is considered as weak roots
1.22 +// by the GC but need to be strong roots if reachable from a current compilation.
1.23 +//
1.24 +void ciObjectFactory::ensure_metadata_alive(ciMetadata* m) {
1.25 + ASSERT_IN_VM; // We're handling raw oops here.
1.26 +
1.27 +#if INCLUDE_ALL_GCS
1.28 + if (!UseG1GC) {
1.29 + return;
1.30 + }
1.31 + Klass* metadata_owner_klass;
1.32 + if (m->is_klass()) {
1.33 + metadata_owner_klass = m->as_klass()->get_Klass();
1.34 + } else if (m->is_method()) {
1.35 + metadata_owner_klass = m->as_method()->get_Method()->constants()->pool_holder();
1.36 + } else {
1.37 + fatal("Not implemented for other types of metadata");
1.38 + }
1.39 +
1.40 + oop metadata_holder = metadata_owner_klass->klass_holder();
1.41 + if (metadata_holder != NULL) {
1.42 + G1SATBCardTableModRefBS::enqueue(metadata_holder);
1.43 + }
1.44 +
1.45 +#endif
1.46 +}
1.47 +
1.48 //------------------------------------------------------------------
1.49 // ciObjectFactory::get_unloaded_method
1.50 //
