Add guards around access to font cache global fields.

src/core/SkGlyphCache.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGlyphCache.h"
 #include "SkGlyphCache_Globals.h"
 #include "SkGraphics.h"
@@ skipping 452 matching lines @@
         rec->fProc(rec->fData);
         AuxProcRec* next = rec->fNext;
         delete rec;
         rec = next;
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
+size_t SkGlyphCache_Globals::getTotalMemoryUsed() const {
+    SkAutoExclusive ac(fLock);
+    return fTotalMemoryUsed;
+}
+
+int SkGlyphCache_Globals::getCacheCountUsed() const {
+    SkAutoExclusive ac(fLock);
+    return fCacheCount;
+}
+
+int SkGlyphCache_Globals::getCacheCountLimit() const {
+    SkAutoExclusive ac(fLock);
+    return fCacheCountLimit;
+}
+
 size_t SkGlyphCache_Globals::setCacheSizeLimit(size_t newLimit) {
     static const size_t minLimit = 256 * 1024;
     if (newLimit < minLimit) {
         newLimit = minLimit;
     }
 
     SkAutoExclusive ac(fLock);
 
     size_t prevLimit = fCacheSizeLimit;
     fCacheSizeLimit = newLimit;
     this->internalPurge();
     return prevLimit;
 }
 
+size_t  SkGlyphCache_Globals::getCacheSizeLimit() const {
+    SkAutoExclusive ac(fLock);
+    return fCacheSizeLimit;
+}
+
 int SkGlyphCache_Globals::setCacheCountLimit(int newCount) {
     if (newCount < 0) {
         newCount = 0;
     }
 
     SkAutoExclusive ac(fLock);
 
     int prevCount = fCacheCountLimit;
     fCacheCountLimit = newCount;
     this->internalPurge();
@@ skipping 328 matching lines @@
 }
 
 void SkGraphics::PurgeFontCache() {
     get_globals().purgeAll();
     SkTypefaceCache::PurgeAll();
 }
 
 // TODO(herb): clean up TLS apis.
 size_t SkGraphics::GetTLSFontCacheLimit() { return 0; }
 void SkGraphics::SetTLSFontCacheLimit(size_t bytes) { }