3 files changed, 49 insertions, 0 deletions
diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
index e232ddd..7114b6a 100644
--- a/libs/hwui/Caches.cpp
+++ b/libs/hwui/Caches.cpp
@@ -33,6 +33,16 @@ ANDROID_SINGLETON_STATIC_INSTANCE(Caches);
 namespace uirenderer {
 
 ///////////////////////////////////////////////////////////////////////////////
+// Macros
+///////////////////////////////////////////////////////////////////////////////
+
+#if DEBUG_CACHE_FLUSH
+    #define FLUSH_LOGD(...) LOGD(__VA_ARGS__)
+#else
+    #define FLUSH_LOGD(...)
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
 // Constructors/destructor
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -150,6 +160,30 @@ void Caches::deleteLayerDeferred(Layer* layer) {
     mLayerGarbage.push(layer);
 }
 
+void Caches::flush(FlushMode mode) {
+    FLUSH_LOGD("Flushing caches (mode %d)", mode);
+
+    clearGarbage();
+
+    switch (mode) {
+        case kFlushMode_Full:
+            textureCache.clear();
+            patchCache.clear();
+            dropShadowCache.clear();
+            gradientCache.clear();
+            // fall through
+        case kFlushMode_Moderate:
+            layerCache.clear();
+            pathCache.clear();
+            roundRectShapeCache.clear();
+            circleShapeCache.clear();
+            ovalShapeCache.clear();
+            rectShapeCache.clear();
+            arcShapeCache.clear();
+            break;
+    }
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // VBO
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/Caches.h b/libs/hwui/Caches.h
index e64d8ac..76dff4b 100644
--- a/libs/hwui/Caches.h
+++ b/libs/hwui/Caches.h
@@ -100,6 +100,18 @@ class Caches: public Singleton<Caches> {
     Vector<Layer*> mLayerGarbage;
 
 public:
+    enum FlushMode {
+        kFlushMode_Moderate = 0,
+        kFlushMode_Full
+    };
+
+    /**
+     * Flush the cache.
+     *
+     * @param mode Indicates how much of the cache should be flushed
+     */
+    void flush(FlushMode mode);
+
     /**
      * Indicates whether the renderer is in debug mode.
      * This debug mode provides limited information to app developers.
diff --git a/libs/hwui/Debug.h b/libs/hwui/Debug.h
index 2cdc8c3..5db73db 100644
--- a/libs/hwui/Debug.h
+++ b/libs/hwui/Debug.h
@@ -26,6 +26,9 @@
 // Turn on to enable memory usage summary on each frame
 #define DEBUG_MEMORY_USAGE 0
 
+// Turn on to enable debugging of cache flushes
+#define DEBUG_CACHE_FLUSH 1
+
 // Turn on to enable layers debugging when rendered as regions
 #define DEBUG_LAYERS_AS_REGIONS 0