icuSources/test/perf/leperf/FontTableCache.h

   1 /*
   2  **********************************************************************
   3  *   © 2016 and later: Unicode, Inc. and others.
   4  *   License & terms of use: http://www.unicode.org/copyright.html#License
   5  **********************************************************************
   6  **********************************************************************
   7  *   Copyright (C) 2003-2013, International Business Machines
   8  *   Corporation and others.  All Rights Reserved.
   9  **********************************************************************
  10  */
  11
  12 #ifndef __FONTTABLECACHE_H
  13
  14 #define __FONTTABLECACHE_H
  15
  16 #include "layout/LETypes.h"
  17
  18 U_NAMESPACE_USE
  19
  20 struct FontTableCacheEntry;
  21
  22 class FontTableCache
  23 {
  24 public:
  25     FontTableCache();
  26
  27     virtual ~FontTableCache();
  28
  29     const void *find(LETag tableTag, size_t &length) const;
  30
  31 protected:
  32     virtual const void *readFontTable(LETag tableTag, size_t &length) const = 0;
  33     virtual void freeFontTable(const void *table) const;
  34
  35 private:
  36
  37     void add(LETag tableTag, const void *table, size_t length);
  38
  39     FontTableCacheEntry *fTableCache;
  40     le_int32 fTableCacheCurr;
  41     le_int32 fTableCacheSize;
  42 };
  43
  44 #endif
  45