SkGlyphCache_Globals: SkMutex -> SkSpinlock

src/core/SkGlyphCache_Globals.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGlyphCache_Globals_DEFINED
 #define SkGlyphCache_Globals_DEFINED
 
 #include "SkGlyphCache.h"
 #include "SkMutex.h"
+#include "SkSpinlock.h"
 #include "SkTLS.h"
 
 #ifndef SK_DEFAULT_FONT_CACHE_COUNT_LIMIT
     #define SK_DEFAULT_FONT_CACHE_COUNT_LIMIT   2048
 #endif
 
 #ifndef SK_DEFAULT_FONT_CACHE_LIMIT
     #define SK_DEFAULT_FONT_CACHE_LIMIT     (2 * 1024 * 1024)
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
-class SkMutex;
-
 class SkGlyphCache_Globals {
 public:
-    enum UseMutex {
-        kNo_UseMutex,  // thread-local cache
-        kYes_UseMutex  // shared cache
-    };
-
-    SkGlyphCache_Globals(UseMutex um) {
+    SkGlyphCache_Globals() {
         fHead = NULL;
         fTotalMemoryUsed = 0;
         fCacheSizeLimit = SK_DEFAULT_FONT_CACHE_LIMIT;
         fCacheCount = 0;
         fCacheCountLimit = SK_DEFAULT_FONT_CACHE_COUNT_LIMIT;
-
-        fMutex = (kYes_UseMutex == um) ? SkNEW(SkMutex) : NULL;
     }
 
     ~SkGlyphCache_Globals() {
         SkGlyphCache* cache = fHead;
         while (cache) {
             SkGlyphCache* next = cache->fNext;
             SkDELETE(cache);
             cache = next;
         }
-
-        SkDELETE(fMutex);
     }
 
-    SkMutex*        fMutex;
+    SkSpinlock     fLock;
 
     SkGlyphCache* internalGetHead() const { return fHead; }
     SkGlyphCache* internalGetTail() const;
 
     size_t getTotalMemoryUsed() const { return fTotalMemoryUsed; }
     int getCacheCountUsed() const { return fCacheCount; }
 
 #ifdef SK_DEBUG
     void validate() const;
 #else
@@ skipping 15 matching lines @@
 
     void purgeAll(); // does not change budget
 
     // call when a glyphcache is available for caching (i.e. not in use)
     void attachCacheToHead(SkGlyphCache*);
 
     // can only be called when the mutex is already held
     void internalDetachCache(SkGlyphCache*);
     void internalAttachCacheToHead(SkGlyphCache*);
 
-    // can return NULL
-    static SkGlyphCache_Globals* FindTLS() {
-        return (SkGlyphCache_Globals*)SkTLS::Find(CreateTLS);
-    }
-
-    static SkGlyphCache_Globals& GetTLS() {
-        return *(SkGlyphCache_Globals*)SkTLS::Get(CreateTLS, DeleteTLS);
-    }
-
-    static void DeleteTLS() { SkTLS::Delete(CreateTLS); }
-
 private:
     SkGlyphCache* fHead;
     size_t  fTotalMemoryUsed;
     size_t  fCacheSizeLimit;
     int32_t fCacheCountLimit;
     int32_t fCacheCount;
 
     // Checkout budgets, modulated by the specified min-bytes-needed-to-purge,
     // and attempt to purge caches to match.
     // Returns number of bytes freed.
     size_t internalPurge(size_t minBytesNeeded = 0);
-
-    static void* CreateTLS() {
-        return SkNEW_ARGS(SkGlyphCache_Globals, (kNo_UseMutex));
-    }
-
-    static void DeleteTLS(void* ptr) {
-        SkDELETE((SkGlyphCache_Globals*)ptr);
-    }
 };
 
 #endif