From 22e41754f6470ff1f4c0e0a56d01f7f555b59e21 Mon Sep 17 00:00:00 2001
From: Raph Levien <raph@google.com>
Date: Wed, 25 Jun 2014 15:58:24 -0700
Subject: Add purgeCaches() method

Expose a method to purge caches used for TextLayout, useful for low
memory conditions.

Change-Id: I92f41afe987b7be4af5ca0a0c50fb51be35a2758
---
 include/minikin/Layout.h | 3 +++
 libs/minikin/Layout.cpp  | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/include/minikin/Layout.h b/include/minikin/Layout.h
index 1b91ad8..e30f2f2 100644
--- a/include/minikin/Layout.h
+++ b/include/minikin/Layout.h
@@ -100,6 +100,9 @@ public:
 
     void getBounds(MinikinRect* rect);
 
+    // Purge all caches, useful in low memory conditions
+    static void purgeCaches();
+
 private:
     // Find a face in the mFaces vector, or create a new entry
     int findFace(FakedFont face, LayoutContext* ctx);
diff --git a/libs/minikin/Layout.cpp b/libs/minikin/Layout.cpp
index 762a7db..48db129 100644
--- a/libs/minikin/Layout.cpp
+++ b/libs/minikin/Layout.cpp
@@ -799,4 +799,12 @@ void Layout::getBounds(MinikinRect* bounds) {
     bounds->set(mBounds);
 }
 
+void Layout::purgeCaches() {
+    AutoMutex _l(gMinikinLock);
+    LayoutCache& layoutCache = LayoutEngine::getInstance().layoutCache;
+    layoutCache.mCache.clear();
+    HbFaceCache& hbCache = LayoutEngine::getInstance().hbFaceCache;
+    hbCache.mCache.clear();
+}
+
 }  // namespace android
-- 
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