check effective cache-size for fixed-budget caches

src/core/SkResourceCache.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkResourceCache_DEFINED
 #define SkResourceCache_DEFINED
 
@@ skipping 105 matching lines @@
      */
     static bool Find(const Key& key, VisitorProc, void* context);
     static void Add(Rec*);
 
     static size_t GetTotalBytesUsed();
     static size_t GetTotalByteLimit();
     static size_t SetTotalByteLimit(size_t newLimit);
 
     static size_t SetSingleAllocationByteLimit(size_t);
     static size_t GetSingleAllocationByteLimit();
+    static size_t GetEffectiveSingleAllocationByteLimit();
 
     static void PurgeAll();
 
     /**
      *  Returns the DiscardableFactory used by the global cache, or NULL.
      */
     static DiscardableFactory GetDiscardableFactory();
 
     /**
      * Use this allocator for bitmaps, so they can use ashmem when available.
@@ skipping 43 matching lines @@
     size_t getTotalBytesUsed() const { return fTotalBytesUsed; }
     size_t getTotalByteLimit() const { return fTotalByteLimit; }
 
     /**
      *  This is respected by SkBitmapProcState::possiblyScaleImage.
      *  0 is no maximum at all; this is the default.
      *  setSingleAllocationByteLimit() returns the previous value.
      */
     size_t setSingleAllocationByteLimit(size_t maximumAllocationSize);
     size_t getSingleAllocationByteLimit() const;
+    // returns the logical single allocation size (pinning against the budget when the cache

[robertphillips, 2015/01/26 17:13:20]

')' ?

+    // is not backed by discardable memory.
+    size_t getEffectiveSingleAllocationByteLimit() const;
+
     /**
      *  Set the maximum number of bytes available to this cache. If the current
      *  cache exceeds this new value, it will be purged to try to fit within
      *  this new limit.
      */
     size_t setTotalByteLimit(size_t newLimit);
 
     void purgeAll() {
         this->purgeAsNeeded(true);
     }
@@ skipping 34 matching lines @@
 
     void init();    // called by constructors
 
 #ifdef SK_DEBUG
     void validate() const;
 #else
     void validate() const {}
 #endif
 };
 #endif