Fix bug #5274332 TextLayoutCache is having multiple instances

- also fix the missing LOG_TAG define

Change-Id: I25e96d1ba372e84768604f18702e0724fdecefb0

Author: Fabrice Di Meglio

core/jni/android/graphics/Canvas.cpp

@@ -760,7 +760,8 @@ class SkCanvasGlue {
         jint count = end - start;
         sp<TextLayoutCacheValue> value;
 #if USE_TEXT_LAYOUT_CACHE
-        value = gTextLayoutCache.getValue(paint, textArray, start, count, end, flags);
+        value = TextLayoutCache::getInstance().getValue(paint, textArray, start, count,
+                        end, flags);
         if (value == NULL) {
             LOGE("Cannot get TextLayoutCache value");
             return ;
@@ -780,7 +781,8 @@ class SkCanvasGlue {
 
         sp<TextLayoutCacheValue> value;
 #if USE_TEXT_LAYOUT_CACHE
-        value = gTextLayoutCache.getValue(paint, textArray, start, count, contextCount, flags);
+        value = TextLayoutCache::getInstance().getValue(paint, textArray, start, count,
+                        contextCount, flags);
         if (value == NULL) {
             LOGE("Cannot get TextLayoutCache value");
             return ;

core/jni/android/graphics/TextLayout.cpp

@@ -257,7 +257,7 @@ void TextLayout::getTextRunAdvances(SkPaint* paint, const jchar* chars, jint sta
     sp<TextLayoutCacheValue> value;
 #if USE_TEXT_LAYOUT_CACHE
     // Return advances from the cache. Compute them if needed
-    value = gTextLayoutCache.getValue(
+    value = TextLayoutCache::getInstance().getValue(
             paint, chars, start, count, contextCount, dirFlags);
 #else
     value = new TextLayoutCacheValue();

core/jni/android/graphics/TextLayout.h

@@ -41,11 +41,6 @@ namespace android {
  */
 #define USE_TEXT_LAYOUT_CACHE 1
 
-
-#if USE_TEXT_LAYOUT_CACHE
-    static TextLayoutCache gTextLayoutCache;
-#endif
-
 enum {
     kBidi_LTR = 0,
     kBidi_RTL = 1,

core/jni/android/graphics/TextLayoutCache.cpp

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "TextLayoutCache"
+
 #include "TextLayoutCache.h"
 #include "TextLayout.h"
 
@@ -23,20 +25,19 @@ extern "C" {
 
 namespace android {
 
+//--------------------------------------------------------------------------------------------------
+#if USE_TEXT_LAYOUT_CACHE
+    ANDROID_SINGLETON_STATIC_INSTANCE(TextLayoutCache);
+#endif
+//--------------------------------------------------------------------------------------------------
+
 TextLayoutCache::TextLayoutCache() :
         mCache(GenerationCache<TextLayoutCacheKey, sp<TextLayoutCacheValue> >::kUnlimitedCapacity),
         mSize(0), mMaxSize(MB(DEFAULT_TEXT_LAYOUT_CACHE_SIZE_IN_MB)),
         mCacheHitCount(0), mNanosecondsSaved(0) {
     init();
 }
 
-TextLayoutCache::TextLayoutCache(uint32_t max):
-        mCache(GenerationCache<TextLayoutCacheKey, sp<TextLayoutCacheValue> >::kUnlimitedCapacity),
-        mSize(0), mMaxSize(max),
-        mCacheHitCount(0), mNanosecondsSaved(0) {
-    init();
-}
-
 TextLayoutCache::~TextLayoutCache() {
     mCache.clear();
 }
@@ -46,25 +47,21 @@ void TextLayoutCache::init() {
 
     mDebugLevel = readRtlDebugLevel();
     mDebugEnabled = mDebugLevel & kRtlDebugCaches;
-    LOGD("Using TextLayoutCache debug level: %d - Debug Enabled: %d", mDebugLevel, mDebugEnabled);
+    LOGD("Using debug level: %d - Debug Enabled: %d", mDebugLevel, mDebugEnabled);
 
     mCacheStartTime = systemTime(SYSTEM_TIME_MONOTONIC);
-    if (mDebugEnabled) {
-        LOGD("TextLayoutCache start time: %lld", mCacheStartTime);
-    }
-    mInitialized = true;
 
     if (mDebugEnabled) {
+        LOGD("Start time: %lld", mCacheStartTime);
 #if RTL_USE_HARFBUZZ
-        LOGD("TextLayoutCache is using HARFBUZZ");
+        LOGD("Using HARFBUZZ");
 #else
-        LOGD("TextLayoutCache is using ICU");
+        LOGD("Using ICU");
 #endif
+        LOGD("Initialization is done");
     }
 
-    if (mDebugEnabled) {
-        LOGD("TextLayoutCache initialization is done");
-    }
+    mInitialized = true;
 }
 
 /*
@@ -147,8 +144,7 @@ sp<TextLayoutCacheValue> TextLayoutCache::getValue(SkPaint* paint,
             // Cleanup to make some room if needed
             if (mSize + size > mMaxSize) {
                 if (mDebugEnabled) {
-                    LOGD("TextLayoutCache: need to clean some entries "
-                            "for making some room for a new entry");
+                    LOGD("Need to clean some entries for making some room for a new entry");
                 }
                 while (mSize + size > mMaxSize) {
                     // This will call the callback
@@ -213,7 +209,7 @@ void TextLayoutCache::dumpCacheStats() {
     float remainingPercent = 100 * ((mMaxSize - mSize) / ((float)mMaxSize));
     float timeRunningInSec = (systemTime(SYSTEM_TIME_MONOTONIC) - mCacheStartTime) / 1000000000;
     LOGD("------------------------------------------------");
-    LOGD("TextLayoutCache stats");
+    LOGD("Cache stats");
     LOGD("------------------------------------------------");
     LOGD("pid       : %d", getpid());
     LOGD("running   : %.0f seconds", timeRunningInSec);

core/jni/android/graphics/TextLayoutCache.h

@@ -25,6 +25,7 @@
 #include <utils/GenerationCache.h>
 #include <utils/Compare.h>
 #include <utils/RefBase.h>
+#include <utils/Singleton.h>
 
 #include <SkPaint.h>
 #include <SkTemplates.h>
@@ -187,11 +188,11 @@ class TextLayoutCacheValue : public RefBase {
 /**
  * Cache of text layout information.
  */
-class TextLayoutCache : public OnEntryRemoved<TextLayoutCacheKey, sp<TextLayoutCacheValue> >
+class TextLayoutCache : public OnEntryRemoved<TextLayoutCacheKey, sp<TextLayoutCacheValue> >,
+        public Singleton<TextLayoutCache>
 {
 public:
     TextLayoutCache();
-    TextLayoutCache(uint32_t maxByteSize);
 
     virtual ~TextLayoutCache();
 

core/jni/android_view_GLES20Canvas.cpp

@@ -477,7 +477,7 @@ static void renderText(OpenGLRenderer* renderer, const jchar* text, int count,
 #if RTL_USE_HARFBUZZ
     sp<TextLayoutCacheValue> value;
 #if USE_TEXT_LAYOUT_CACHE
-    value = gTextLayoutCache.getValue(paint, text, 0, count, count, flags);
+    value = TextLayoutCache::getInstance().getValue(paint, text, 0, count, count, flags);
     if (value == NULL) {
         LOGE("Cannot get TextLayoutCache value");
         return ;
@@ -507,7 +507,7 @@ static void renderTextRun(OpenGLRenderer* renderer, const jchar* text,
 #if RTL_USE_HARFBUZZ
     sp<TextLayoutCacheValue> value;
 #if USE_TEXT_LAYOUT_CACHE
-    value = gTextLayoutCache.getValue(paint, text, start, count, contextCount, flags);
+    value = TextLayoutCache::getInstance().getValue(paint, text, start, count, contextCount, flags);
     if (value == NULL) {
         LOGE("Cannot get TextLayoutCache value");
         return ;