1 files changed, 67 insertions, 0 deletions
diff --git a/include/core/SkGlobals.h b/include/core/SkGlobals.h
new file mode 100644
index 0000000..8e28290
--- /dev/null
+++ b/include/core/SkGlobals.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SkGlobals_DEFINED
+#define SkGlobals_DEFINED
+
+#include "SkThread.h"
+
+class SkGlobals {
+public:
+    class Rec {
+    public:
+        virtual ~Rec();
+    private:
+        Rec*        fNext;
+        uint32_t    fTag;
+
+        friend class SkGlobals;
+    };
+
+    /** Look for a matching Rec for the specified tag. If one is found, return it.
+        If one is not found, if create_proc is null, return null, else
+        call the proc, and if it returns a Rec, add it to the global list
+        and return it.
+
+        create_proc can NOT call back into SkGlobals::Find (it would deadlock)
+    */
+    static Rec* Find(uint32_t tag, Rec* (*create_proc)());
+    /** Helper for Find, when you want to assert that the Rec is already in the list
+    */
+    static Rec* Get(uint32_t tag)
+    {
+        Rec* rec = SkGlobals::Find(tag, NULL);
+        SkASSERT(rec);
+        return rec;
+    }
+
+    // used by porting layer
+    struct BootStrap {
+        SkMutex fMutex;
+        Rec*    fHead;
+    };
+
+private:
+    static void Init();
+    static void Term();
+    friend class SkGraphics;
+
+    //  This last function is implemented in the porting layer
+    static BootStrap& GetBootStrap();
+};
+
+#endif
+