diff options
Diffstat (limited to 'libjava/interpret.cc')
| -rw-r--r-- | libjava/interpret.cc | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/libjava/interpret.cc b/libjava/interpret.cc index ddb4697..0e6fbc8 100644 --- a/libjava/interpret.cc +++ b/libjava/interpret.cc @@ -3882,7 +3882,17 @@ _Jv_InterpreterEngine::do_allocate_static_fields (jclass klass, _Jv_InterpClass *iclass = (_Jv_InterpClass *) klass->aux_info; // Splitting the allocations here lets us scan reference fields and - // avoid scanning non-reference fields. + // avoid scanning non-reference fields. How reference fields are + // scanned is a bit tricky: we allocate using _Jv_AllocRawObj, which + // means that this memory will be scanned conservatively (same + // difference, since we know all the contents here are pointers). + // Then we put pointers into this memory into the 'fields' + // structure. Most of these are interior pointers, which is ok (but + // even so the pointer to the first reference field will be used and + // that is not an interior pointer). The 'fields' array is also + // allocated with _Jv_AllocRawObj (see defineclass.cc), so it will + // be scanned. A pointer to this array is held by Class and thus + // seen by the collector. char *reference_fields = (char *) _Jv_AllocRawObj (pointer_size); char *non_reference_fields = (char *) _Jv_AllocBytes (other_size); |