Move several property queries to Properties class

bug:17478770

This removes a lot of redundant property query code, and puts the
queries all in one place, so defining them automatically will be simpler
in the future.

Change-Id: I0428550e6081f07bc6554ffdf73b22284325abb8

17 files changed, 63 insertions, 177 deletions

diff --git a/libs/hwui/FboCache.cpp b/libs/hwui/FboCache.cpp
index cca3cb7a98f1..b2181b60054f 100644
--- a/libs/hwui/FboCache.cpp
+++ b/libs/hwui/FboCache.cpp
@@ -27,15 +27,8 @@ namespace uirenderer {
 // Constructors/destructor
 ///////////////////////////////////////////////////////////////////////////////
 
-FboCache::FboCache(): mMaxSize(DEFAULT_FBO_CACHE_SIZE) {
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get(PROPERTY_FBO_CACHE_SIZE, property, nullptr) > 0) {
-        INIT_LOGD("  Setting fbo cache size to %s", property);
-        mMaxSize = atoi(property);
-    } else {
-        INIT_LOGD("  Using default fbo cache size of %d", DEFAULT_FBO_CACHE_SIZE);
-    }
-}
+FboCache::FboCache()
+        : mMaxSize(Properties::fboCacheSize) {}
 
 FboCache::~FboCache() {
     clear();
diff --git a/libs/hwui/GradientCache.cpp b/libs/hwui/GradientCache.cpp
index e899ac71ff36..044c7cb65718 100644
--- a/libs/hwui/GradientCache.cpp
+++ b/libs/hwui/GradientCache.cpp
@@ -65,17 +65,9 @@ int GradientCacheEntry::compare(const GradientCacheEntry& lhs, const GradientCac
 GradientCache::GradientCache(Extensions& extensions)
         : mCache(LruCache<GradientCacheEntry, Texture*>::kUnlimitedCapacity)
         , mSize(0)
-        , mMaxSize(MB(DEFAULT_GRADIENT_CACHE_SIZE))
+        , mMaxSize(Properties::gradientCacheSize)
         , mUseFloatTexture(extensions.hasFloatTextures())
         , mHasNpot(extensions.hasNPot()){
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get(PROPERTY_GRADIENT_CACHE_SIZE, property, nullptr) > 0) {
-        INIT_LOGD("  Setting gradient cache size to %sMB", property);
-        setMaxSize(MB(atof(property)));
-    } else {
-        INIT_LOGD("  Using default gradient cache size of %.2fMB", DEFAULT_GRADIENT_CACHE_SIZE);
-    }
-
     glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
 
     mCache.setOnEntryRemovedListener(this);
@@ -97,13 +89,6 @@ uint32_t GradientCache::getMaxSize() {
     return mMaxSize;
 }
 
-void GradientCache::setMaxSize(uint32_t maxSize) {
-    mMaxSize = maxSize;
-    while (mSize > mMaxSize) {
-        mCache.removeOldest();
-    }
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 // Callbacks
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/GradientCache.h b/libs/hwui/GradientCache.h
index b762ca7d5e5c..dccd45072522 100644
--- a/libs/hwui/GradientCache.h
+++ b/libs/hwui/GradientCache.h
@@ -123,10 +123,6 @@ public:
     void clear();
 
     /**
-     * Sets the maximum size of the cache in bytes.
-     */
-    void setMaxSize(uint32_t maxSize);
-    /**
      * Returns the maximum size of the cache in bytes.
      */
     uint32_t getMaxSize();
@@ -177,7 +173,7 @@ private:
     LruCache<GradientCacheEntry, Texture*> mCache;
 
     uint32_t mSize;
-    uint32_t mMaxSize;
+    const uint32_t mMaxSize;
 
     GLint mMaxTextureSize;
     bool mUseFloatTexture;
diff --git a/libs/hwui/PatchCache.cpp b/libs/hwui/PatchCache.cpp
index 98812805259e..bd6feb9fc762 100644
--- a/libs/hwui/PatchCache.cpp
+++ b/libs/hwui/PatchCache.cpp
@@ -32,20 +32,12 @@ namespace uirenderer {
 
 PatchCache::PatchCache(RenderState& renderState)
         : mRenderState(renderState)
+        , mMaxSize(Properties::patchCacheSize)
         , mSize(0)
         , mCache(LruCache<PatchDescription, Patch*>::kUnlimitedCapacity)
         , mMeshBuffer(0)
         , mFreeBlocks(nullptr)
-        , mGenerationId(0) {
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get(PROPERTY_PATCH_CACHE_SIZE, property, nullptr) > 0) {
-        INIT_LOGD("  Setting patch cache size to %skB", property);
-        mMaxSize = KB(atoi(property));
-    } else {
-        INIT_LOGD("  Using default patch cache size of %.2fkB", DEFAULT_PATCH_CACHE_SIZE);
-        mMaxSize = KB(DEFAULT_PATCH_CACHE_SIZE);
-    }
-}
+        , mGenerationId(0) {}
 
 PatchCache::~PatchCache() {
     clear();
diff --git a/libs/hwui/PatchCache.h b/libs/hwui/PatchCache.h
index 387f79acf0ec..66ef6a0279ba 100644
--- a/libs/hwui/PatchCache.h
+++ b/libs/hwui/PatchCache.h
@@ -169,7 +169,7 @@ private:
 #endif
 
     RenderState& mRenderState;
-    uint32_t mMaxSize;
+    const uint32_t mMaxSize;
     uint32_t mSize;
 
     LruCache<PatchDescription, Patch*> mCache;
diff --git a/libs/hwui/PathCache.cpp b/libs/hwui/PathCache.cpp
index bfabc1d4d94c..8f914acc5c76 100644
--- a/libs/hwui/PathCache.cpp
+++ b/libs/hwui/PathCache.cpp
@@ -135,17 +135,10 @@ static void drawPath(const SkPath *path, const SkPaint* paint, SkBitmap& bitmap,
 // Cache constructor/destructor
 ///////////////////////////////////////////////////////////////////////////////
 
-PathCache::PathCache():
-        mCache(LruCache<PathDescription, PathTexture*>::kUnlimitedCapacity),
-        mSize(0), mMaxSize(MB(DEFAULT_PATH_CACHE_SIZE)) {
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get(PROPERTY_PATH_CACHE_SIZE, property, nullptr) > 0) {
-        INIT_LOGD("  Setting path cache size to %sMB", property);
-        mMaxSize = MB(atof(property));
-    } else {
-        INIT_LOGD("  Using default path cache size of %.2fMB", DEFAULT_PATH_CACHE_SIZE);
-    }
-
+PathCache::PathCache()
+        : mCache(LruCache<PathDescription, PathTexture*>::kUnlimitedCapacity)
+        , mSize(0)
+        , mMaxSize(Properties::pathCacheSize) {
     mCache.setOnEntryRemovedListener(this);
 
     GLint maxTextureSize;
diff --git a/libs/hwui/PathCache.h b/libs/hwui/PathCache.h
index 18f380fe3f7a..d2633aa427c5 100644
--- a/libs/hwui/PathCache.h
+++ b/libs/hwui/PathCache.h
@@ -300,7 +300,7 @@ private:
 
     LruCache<PathDescription, PathTexture*> mCache;
     uint32_t mSize;
-    uint32_t mMaxSize;
+    const uint32_t mMaxSize;
     GLuint mMaxTextureSize;
 
     bool mDebugEnabled;
diff --git a/libs/hwui/Properties.cpp b/libs/hwui/Properties.cpp
index 083aeb7ed585..bbd8c7226ab2 100644
--- a/libs/hwui/Properties.cpp
+++ b/libs/hwui/Properties.cpp
@@ -37,7 +37,18 @@ bool Properties::useBufferAge = true;
 bool Properties::enablePartialUpdates = true;
 
 float Properties::textGamma = DEFAULT_TEXT_GAMMA;
-int Properties::layerPoolSize = DEFAULT_LAYER_CACHE_SIZE;
+
+int Properties::fboCacheSize = DEFAULT_FBO_CACHE_SIZE;
+int Properties::gradientCacheSize = MB(DEFAULT_GRADIENT_CACHE_SIZE);
+int Properties::layerPoolSize = MB(DEFAULT_LAYER_CACHE_SIZE);
+int Properties::patchCacheSize = KB(DEFAULT_PATCH_CACHE_SIZE);
+int Properties::pathCacheSize = MB(DEFAULT_PATH_CACHE_SIZE);
+int Properties::renderBufferCacheSize = MB(DEFAULT_RENDER_BUFFER_CACHE_SIZE);
+int Properties::tessellationCacheSize = MB(DEFAULT_VERTEX_CACHE_SIZE);
+int Properties::textDropShadowCacheSize = MB(DEFAULT_DROP_SHADOW_CACHE_SIZE);
+int Properties::textureCacheSize = MB(DEFAULT_TEXTURE_CACHE_SIZE);
+
+float Properties::textureCacheFlushRate = DEFAULT_TEXTURE_CACHE_FLUSH_RATE;
 
 DebugLevel Properties::debugLevel = kDebugDisabled;
 OverdrawColorSet Properties::overdrawColorSet = OverdrawColorSet::Default;
@@ -79,7 +90,6 @@ bool Properties::load() {
     bool prevDebugOverdraw = debugOverdraw;
     StencilClipDebug prevDebugStencilClip = debugStencilClip;
 
-
     debugOverdraw = false;
     if (property_get(PROPERTY_DEBUG_OVERDRAW, property, nullptr) > 0) {
         INIT_LOGD("  Overdraw debug enabled: %s", property);
@@ -133,7 +143,18 @@ bool Properties::load() {
     enablePartialUpdates = property_get_bool(PROPERTY_ENABLE_PARTIAL_UPDATES, true);
 
     textGamma = property_get_float(PROPERTY_TEXT_GAMMA, DEFAULT_TEXT_GAMMA);
+
+    fboCacheSize = property_get_int(PROPERTY_FBO_CACHE_SIZE, DEFAULT_FBO_CACHE_SIZE);
+    gradientCacheSize = MB(property_get_float(PROPERTY_GRADIENT_CACHE_SIZE, DEFAULT_GRADIENT_CACHE_SIZE));
     layerPoolSize = MB(property_get_float(PROPERTY_LAYER_CACHE_SIZE, DEFAULT_LAYER_CACHE_SIZE));
+    patchCacheSize = KB(property_get_float(PROPERTY_PATCH_CACHE_SIZE, DEFAULT_PATCH_CACHE_SIZE));
+    pathCacheSize = MB(property_get_float(PROPERTY_PATH_CACHE_SIZE, DEFAULT_PATH_CACHE_SIZE));
+    renderBufferCacheSize = MB(property_get_float(PROPERTY_RENDER_BUFFER_CACHE_SIZE, DEFAULT_RENDER_BUFFER_CACHE_SIZE));
+    tessellationCacheSize = MB(property_get_float(PROPERTY_VERTEX_CACHE_SIZE, DEFAULT_VERTEX_CACHE_SIZE));
+    textDropShadowCacheSize = MB(property_get_float(PROPERTY_DROP_SHADOW_CACHE_SIZE, DEFAULT_DROP_SHADOW_CACHE_SIZE));
+    textureCacheSize = MB(property_get_float(PROPERTY_TEXTURE_CACHE_SIZE, DEFAULT_TEXTURE_CACHE_SIZE));
+    textureCacheFlushRate = std::max(0.0f, std::min(1.0f,
+            property_get_float(PROPERTY_TEXTURE_CACHE_FLUSH_RATE, DEFAULT_TEXTURE_CACHE_FLUSH_RATE)));
 
     return (prevDebugLayersUpdates != debugLayersUpdates)
             || (prevDebugOverdraw != debugOverdraw)
diff --git a/libs/hwui/Properties.h b/libs/hwui/Properties.h
index 88f1dbc98926..3e111516ac63 100644
--- a/libs/hwui/Properties.h
+++ b/libs/hwui/Properties.h
@@ -267,7 +267,16 @@ public:
 
     static float textGamma;
 
+    static int fboCacheSize;
+    static int gradientCacheSize;
     static int layerPoolSize;
+    static int patchCacheSize;
+    static int pathCacheSize;
+    static int renderBufferCacheSize;
+    static int tessellationCacheSize;
+    static int textDropShadowCacheSize;
+    static int textureCacheSize;
+    static float textureCacheFlushRate;
 
     static DebugLevel debugLevel;
     static OverdrawColorSet overdrawColorSet;
diff --git a/libs/hwui/RenderBufferCache.cpp b/libs/hwui/RenderBufferCache.cpp
index 11d7a6af3a6a..1ac57cdbac0c 100644
--- a/libs/hwui/RenderBufferCache.cpp
+++ b/libs/hwui/RenderBufferCache.cpp
@@ -40,16 +40,9 @@ namespace uirenderer {
 // Constructors/destructor
 ///////////////////////////////////////////////////////////////////////////////
 
-RenderBufferCache::RenderBufferCache(): mSize(0), mMaxSize(MB(DEFAULT_RENDER_BUFFER_CACHE_SIZE)) {
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get(PROPERTY_RENDER_BUFFER_CACHE_SIZE, property, nullptr) > 0) {
-        INIT_LOGD("  Setting render buffer cache size to %sMB", property);
-        setMaxSize(MB(atof(property)));
-    } else {
-        INIT_LOGD("  Using default render buffer cache size of %.2fMB",
-                DEFAULT_RENDER_BUFFER_CACHE_SIZE);
-    }
-}
+RenderBufferCache::RenderBufferCache()
+        : mSize(0)
+        , mMaxSize(Properties::renderBufferCacheSize) {}
 
 RenderBufferCache::~RenderBufferCache() {
     clear();
@@ -67,11 +60,6 @@ uint32_t RenderBufferCache::getMaxSize() {
     return mMaxSize;
 }
 
-void RenderBufferCache::setMaxSize(uint32_t maxSize) {
-    clear();
-    mMaxSize = maxSize;
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 // Caching
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/RenderBufferCache.h b/libs/hwui/RenderBufferCache.h
index 7f59ec1c48b1..f77f4c95b5ba 100644
--- a/libs/hwui/RenderBufferCache.h
+++ b/libs/hwui/RenderBufferCache.h
@@ -64,10 +64,6 @@ public:
     void clear();
 
     /**
-     * Sets the maximum size of the cache in bytes.
-     */
-    void setMaxSize(uint32_t maxSize);
-    /**
      * Returns the maximum size of the cache in bytes.
      */
     uint32_t getMaxSize();
diff --git a/libs/hwui/TessellationCache.cpp b/libs/hwui/TessellationCache.cpp
index fd9fb852171c..14c8f3926e31 100644
--- a/libs/hwui/TessellationCache.cpp
+++ b/libs/hwui/TessellationCache.cpp
@@ -265,18 +265,9 @@ public:
 ///////////////////////////////////////////////////////////////////////////////
 
 TessellationCache::TessellationCache()
-        : mSize(0)
-        , mMaxSize(MB(DEFAULT_VERTEX_CACHE_SIZE))
+        : mMaxSize(Properties::tessellationCacheSize)
         , mCache(LruCache<Description, Buffer*>::kUnlimitedCapacity)
         , mShadowCache(LruCache<ShadowDescription, Task<vertexBuffer_pair_t*>*>::kUnlimitedCapacity) {
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get(PROPERTY_VERTEX_CACHE_SIZE, property, nullptr) > 0) {
-        INIT_LOGD("  Setting tessellation cache size to %sMB", property);
-        setMaxSize(MB(atof(property)));
-    } else {
-        INIT_LOGD("  Using default tessellation cache size of %.2fMB", DEFAULT_VERTEX_CACHE_SIZE);
-    }
-
     mCache.setOnEntryRemovedListener(&mBufferRemovedListener);
     mShadowCache.setOnEntryRemovedListener(&mBufferPairRemovedListener);
     mDebugEnabled = Properties::debugLevel & kDebugCaches;
@@ -303,13 +294,6 @@ uint32_t TessellationCache::getMaxSize() {
     return mMaxSize;
 }
 
-void TessellationCache::setMaxSize(uint32_t maxSize) {
-    mMaxSize = maxSize;
-    while (mSize > mMaxSize) {
-        mCache.removeOldest();
-    }
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 // Caching
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/TessellationCache.h b/libs/hwui/TessellationCache.h
index 6dcc8120cf48..0bd6365db60f 100644
--- a/libs/hwui/TessellationCache.h
+++ b/libs/hwui/TessellationCache.h
@@ -131,11 +131,6 @@ public:
      * Clears the cache. This causes all TessellationBuffers to be deleted.
      */
     void clear();
-
-    /**
-     * Sets the maximum size of the cache in bytes.
-     */
-    void setMaxSize(uint32_t maxSize);
     /**
      * Returns the maximum size of the cache in bytes.
      */
@@ -198,8 +193,7 @@ private:
 
     Buffer* getOrCreateBuffer(const Description& entry, Tessellator tessellator);
 
-    uint32_t mSize;
-    uint32_t mMaxSize;
+    const uint32_t mMaxSize;
 
     bool mDebugEnabled;
 
diff --git a/libs/hwui/TextDropShadowCache.cpp b/libs/hwui/TextDropShadowCache.cpp
index 1707468f169d..fe4b3d7507b2 100644
--- a/libs/hwui/TextDropShadowCache.cpp
+++ b/libs/hwui/TextDropShadowCache.cpp
@@ -93,36 +93,21 @@ int ShadowText::compare(const ShadowText& lhs, const ShadowText& rhs) {
 // Constructors/destructor
 ///////////////////////////////////////////////////////////////////////////////
 
-TextDropShadowCache::TextDropShadowCache():
-        mCache(LruCache<ShadowText, ShadowTexture*>::kUnlimitedCapacity),
-        mSize(0), mMaxSize(MB(DEFAULT_DROP_SHADOW_CACHE_SIZE)) {
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get(PROPERTY_DROP_SHADOW_CACHE_SIZE, property, nullptr) > 0) {
-        INIT_LOGD("  Setting drop shadow cache size to %sMB", property);
-        setMaxSize(MB(atof(property)));
-    } else {
-        INIT_LOGD("  Using default drop shadow cache size of %.2fMB",
-                DEFAULT_DROP_SHADOW_CACHE_SIZE);
-    }
-
-    init();
-}
+TextDropShadowCache::TextDropShadowCache()
+        : TextDropShadowCache(Properties::textDropShadowCacheSize) {}
 
-TextDropShadowCache::TextDropShadowCache(uint32_t maxByteSize):
-        mCache(LruCache<ShadowText, ShadowTexture*>::kUnlimitedCapacity),
-        mSize(0), mMaxSize(maxByteSize) {
-    init();
+TextDropShadowCache::TextDropShadowCache(uint32_t maxByteSize)
+        : mCache(LruCache<ShadowText, ShadowTexture*>::kUnlimitedCapacity)
+        , mSize(0)
+        , mMaxSize(maxByteSize) {
+    mCache.setOnEntryRemovedListener(this);
+    mDebugEnabled = Properties::debugLevel & kDebugMoreCaches;
 }
 
 TextDropShadowCache::~TextDropShadowCache() {
     mCache.clear();
 }
 
-void TextDropShadowCache::init() {
-    mCache.setOnEntryRemovedListener(this);
-    mDebugEnabled = Properties::debugLevel & kDebugMoreCaches;
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 // Size management
 ///////////////////////////////////////////////////////////////////////////////
@@ -135,13 +120,6 @@ uint32_t TextDropShadowCache::getMaxSize() {
     return mMaxSize;
 }
 
-void TextDropShadowCache::setMaxSize(uint32_t maxSize) {
-    mMaxSize = maxSize;
-    while (mSize > mMaxSize) {
-        mCache.removeOldest();
-    }
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 // Callbacks
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/TextDropShadowCache.h b/libs/hwui/TextDropShadowCache.h
index c4f3c5d96786..cf647882e5a7 100644
--- a/libs/hwui/TextDropShadowCache.h
+++ b/libs/hwui/TextDropShadowCache.h
@@ -148,10 +148,6 @@ public:
     }
 
     /**
-     * Sets the maximum size of the cache in bytes.
-     */
-    void setMaxSize(uint32_t maxSize);
-    /**
      * Returns the maximum size of the cache in bytes.
      */
     uint32_t getMaxSize();
@@ -161,13 +157,11 @@ public:
     uint32_t getSize();
 
 private:
-    void init();
-
     LruCache<ShadowText, ShadowTexture*> mCache;
 
     uint32_t mSize;
-    uint32_t mMaxSize;
-    FontRenderer* mRenderer;
+    const uint32_t mMaxSize;
+    FontRenderer* mRenderer = nullptr;
     bool mDebugEnabled;
 }; // class TextDropShadowCache
 
diff --git a/libs/hwui/TextureCache.cpp b/libs/hwui/TextureCache.cpp
index 31bfa3a1ada4..ade8600ab78b 100644
--- a/libs/hwui/TextureCache.cpp
+++ b/libs/hwui/TextureCache.cpp
@@ -35,26 +35,9 @@ namespace uirenderer {
 TextureCache::TextureCache()
         : mCache(LruCache<uint32_t, Texture*>::kUnlimitedCapacity)
         , mSize(0)
-        , mMaxSize(MB(DEFAULT_TEXTURE_CACHE_SIZE))
-        , mFlushRate(DEFAULT_TEXTURE_CACHE_FLUSH_RATE)
+        , mMaxSize(Properties::textureCacheSize)
+        , mFlushRate(Properties::textureCacheFlushRate)
         , mAssetAtlas(nullptr) {
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get(PROPERTY_TEXTURE_CACHE_SIZE, property, nullptr) > 0) {
-        INIT_LOGD("  Setting texture cache size to %sMB", property);
-        setMaxSize(MB(atof(property)));
-    } else {
-        INIT_LOGD("  Using default texture cache size of %.2fMB", DEFAULT_TEXTURE_CACHE_SIZE);
-    }
-
-    if (property_get(PROPERTY_TEXTURE_CACHE_FLUSH_RATE, property, nullptr) > 0) {
-        float flushRate = atof(property);
-        INIT_LOGD("  Setting texture cache flush rate to %.2f%%", flushRate * 100.0f);
-        setFlushRate(flushRate);
-    } else {
-        INIT_LOGD("  Using default texture cache flush rate of %.2f%%",
-                DEFAULT_TEXTURE_CACHE_FLUSH_RATE * 100.0f);
-    }
-
     mCache.setOnEntryRemovedListener(this);
 
     glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
@@ -79,17 +62,6 @@ uint32_t TextureCache::getMaxSize() {
     return mMaxSize;
 }
 
-void TextureCache::setMaxSize(uint32_t maxSize) {
-    mMaxSize = maxSize;
-    while (mSize > mMaxSize) {
-        mCache.removeOldest();
-    }
-}
-
-void TextureCache::setFlushRate(float flushRate) {
-    mFlushRate = std::max(0.0f, std::min(1.0f, flushRate));
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 // Callbacks
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/TextureCache.h b/libs/hwui/TextureCache.h
index 463450c81714..a4317cee73fd 100644
--- a/libs/hwui/TextureCache.h
+++ b/libs/hwui/TextureCache.h
@@ -109,10 +109,6 @@ public:
     void clear();
 
     /**
-     * Sets the maximum size of the cache in bytes.
-     */
-    void setMaxSize(uint32_t maxSize);
-    /**
      * Returns the maximum size of the cache in bytes.
      */
     uint32_t getMaxSize();
@@ -126,11 +122,6 @@ public:
      * is defined by the flush rate.
      */
     void flush();
-    /**
-     * Indicates the percentage of the cache to retain when a
-     * memory trim is requested (see Caches::flush).
-     */
-    void setFlushRate(float flushRate);
 
     void setAssetAtlas(AssetAtlas* assetAtlas);
 
@@ -148,10 +139,10 @@ private:
     LruCache<uint32_t, Texture*> mCache;
 
     uint32_t mSize;
-    uint32_t mMaxSize;
+    const uint32_t mMaxSize;
     GLint mMaxTextureSize;
 
-    float mFlushRate;
+    const float mFlushRate;
 
     bool mDebugEnabled;