Allow delayed deallocation in the executable memory allocator

Allow for allocations to outlive the allocator itself. When the allocator dies,
it invalidates any remaining non-free allocations, making them safe to delete
later.

Change-Id: I6c71cddbbd5dcaff1ad50f3991a3c710d4f96737
Reviewed-by: Lars Knoll <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/qml/jsruntime/qv4executableallocator_p.h b/src/qml/jsruntime/qv4executableallocator_p.h
index feba5d7e3d..b4fb2fb0e5 100644
--- a/src/qml/jsruntime/qv4executableallocator_p.h
+++ b/src/qml/jsruntime/qv4executableallocator_p.h
@@ -81,8 +81,13 @@ public:
         {}
 
         void *start() const;
+        void invalidate() { addr = 0; }
+        bool isValid() const { return addr != 0; }
+        void deallocate(ExecutableAllocator *allocator);
 
     private:
+        ~Allocation() {}
+
         friend class ExecutableAllocator;
 
         Allocation *split(size_t dividingSize);