V4: Pass scope around as parameters inside the runtime.

The implementation of many (or all) runtime functions consist of first
creating a QV4::Scope, which saves and restores the JS stack pointer.
It also prevents tail-calls because of that restoring behavior. In many
cases it suffices to do that at the entry-point of the runtime.

The return value of a JS function call is now also stored in the scope.
Previously, all return values were stored in a ScopedValue, got loaded
on return, and immediately stored in another ScopedValue in the caller.
This resulted in a lot of stores, where now there is only one store
needed, and no extra ScopedValue for every function.

Change-Id: I13d80fc0ce72c5702ef1536d41d12f710c5914fa
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/quick/items/context2d/qquickcanvasitem.cpp b/src/quick/items/context2d/qquickcanvasitem.cpp
index b340d9bf94..9d5ddab155 100644
--- a/src/quick/items/context2d/qquickcanvasitem.cpp
+++ b/src/quick/items/context2d/qquickcanvasitem.cpp
@@ -709,7 +709,7 @@ void QQuickCanvasItem::updatePolish()
         for (auto it = animationCallbacks.cbegin(), end = animationCallbacks.cend(); it != end; ++it) {
             QV4::ScopedFunctionObject f(scope, it.value().value());
             callData->args[0] = QV4::Primitive::fromUInt32(QDateTime::currentDateTimeUtc().toTime_t());
-            f->call(callData);
+            f->call(scope, callData);
         }
     }
     else {