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authorLars Knoll <lars.knoll@qt.io>2018-01-10 14:16:22 +0100
committerLars Knoll <lars.knoll@qt.io>2018-04-12 13:59:17 +0000
commit6c8c604f11e7a6d5880e4f951255d496fe905797 (patch)
tree117050abfb2164d45575ee1bfd35de46ddf224b2 /src/qml/jsruntime/qv4internalclass_p.h
parent6b110a30df178b2aaace579841e5bd74f2e9ee99 (diff)
Reorganize Lookup data structure to make marking faster
Do this by always using odd numbers for protoId's, and putting those into the same place as the InternalClass pointers. That makes it possible to quickly check whether the lookup contains a pointer to a valid heap object. Change-Id: I330017b26c090b4dcbbcce1a127dca7ba7e148d1 Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Diffstat (limited to 'src/qml/jsruntime/qv4internalclass_p.h')
-rw-r--r--src/qml/jsruntime/qv4internalclass_p.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/qml/jsruntime/qv4internalclass_p.h b/src/qml/jsruntime/qv4internalclass_p.h
index 909335df58..0b6f088bd3 100644
--- a/src/qml/jsruntime/qv4internalclass_p.h
+++ b/src/qml/jsruntime/qv4internalclass_p.h
@@ -264,9 +264,9 @@ struct InternalClassTransition
namespace Heap {
struct InternalClass : Base {
- int protoId; // unique across the engine, gets changed whenever the proto chain changes
ExecutionEngine *engine;
const VTable *vtable;
+ quintptr protoId; // unique across the engine, gets changed whenever the proto chain changes
Heap::Object *prototype;
InternalClass *parent;