Provide an option in bench_pictures to count pixel ram.

include/lazy/SkLruImageCache.h

Index: include/lazy/SkLruImageCache.h
diff --git a/include/lazy/SkLruImageCache.h b/include/lazy/SkLruImageCache.h
index 44446000cdf0f96370c8ecbed5cbe40a555d8b89..7e90531ed066f85433a8b6f5017155f9810b16af 100644
--- a/include/lazy/SkLruImageCache.h
+++ b/include/lazy/SkLruImageCache.h
@@ -28,8 +28,21 @@ public:
     CacheStatus getCacheStatus(intptr_t ID) const SK_OVERRIDE;
 #endif
 

[reed1, 2013/03/04 20:07:27]

existing API naming we use for font cache. Maybe we share naming styles?

    static size_t GetFontCacheLimit();
    static size_t SetFontCacheLimit(size_t bytes);
    static size_t GetFontCacheUsed();

[scroggo, 2013/03/04 20:49:29]

Done. Currently, we do not have a notion like the font cache of having a single
global/single per thread (though I'm happy to revisit that), so I left them
member functions rather than static. They do have similar names though.

+    /**
+     *  Set the budget. If more bytes are used than this, the cache will free unpinned memory until
+     *  under the new budget or until all unpinned memory is freed. This will never free pinned
+     *  memory, so the cache can potentially remain over budget. The budget is enforced each time
+     *  memory is allocated or released.
+     *  0 is a special flag for an infinite budget.
+     */
     void setBudget(size_t newBudget);
 
+    /**
+     *  Return the amount of memory currently in use by the cache. Can include memory that is no
+     *  longer pinned, but has not been freed.
+     */
+    size_t getRamUsed() const { return fRamUsed; }
+
     virtual void* allocAndPinCache(size_t bytes, intptr_t* ID) SK_OVERRIDE;
     virtual void* pinCache(intptr_t ID) SK_OVERRIDE;
     virtual void releaseCache(intptr_t ID) SK_OVERRIDE;