1 files changed, 43 insertions, 0 deletions
diff --git a/libsgl/images/SkImageRefPool.h b/libsgl/images/SkImageRefPool.h
new file mode 100644
index 0000000..b2eb7b3
--- /dev/null
+++ b/libsgl/images/SkImageRefPool.h
@@ -0,0 +1,43 @@
+#ifndef SkImageRefPool_DEFINED
+#define SkImageRefPool_DEFINED
+
+#include "SkTypes.h"
+
+class SkImageRef;
+class SkImageRef_GlobalPool;
+
+class SkImageRefPool {
+public:
+    SkImageRefPool();
+    ~SkImageRefPool();
+    
+    size_t  getRAMBudget() const { return fRAMBudget; }
+    void    setRAMBudget(size_t);
+    
+    size_t  getRAMUsed() const { return fRAMUsed; }
+    void    setRAMUsed(size_t limit);
+    
+    void addToHead(SkImageRef*);
+    void addToTail(SkImageRef*);
+    void detach(SkImageRef*);
+
+    void dump() const;
+    
+private:
+    size_t fRAMBudget;
+    size_t fRAMUsed;
+    
+    int         fCount;
+    SkImageRef* fHead, *fTail;
+    
+    int computeCount() const;
+    
+    friend class SkImageRef_GlobalPool;
+    
+    void justAddedPixels(SkImageRef*);
+    void canLosePixels(SkImageRef*);
+    void purgeIfNeeded();
+};
+
+#endif
+