add gpu backend (not hooked up yet)
git-svn-id: http://skia.googlecode.com/svn/trunk@649 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/include/GrTLList.h b/gpu/include/GrTLList.h
new file mode 100644
index 0000000..1f59635
--- /dev/null
+++ b/gpu/include/GrTLList.h
@@ -0,0 +1,61 @@
+/*
+ Copyright 2010 Google Inc.
+
+ 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 GrTLList_DEFINED
+#define GrTLList_DEFINED
+
+#include "GrNoncopyable.h"
+
+template <typename T> class GrTLList : GrNoncopyable {
+public:
+ class Entry {
+ Entry* fPrev;
+ Entry* fNext;
+ };
+
+ GrTLList() : fHead(NULL), fTail(NULL) {}
+#if GR_DEBUG
+ ~GrTLList() {
+ GrAssert(NULL == fHead);
+ GrAssert(NULL == ftail);
+ }
+#endif
+
+ T* head() const { return fHead; }
+ T* tail() const { return fTail; }
+
+ void addToHead(T*);
+ void addToTail(T*);
+ void removeFromList(T*);
+
+private:
+ Entry* fHead;
+ Entry* fTail;
+
+ friend class Entry;
+};
+
+
+class Parent {
+ GrTDLList<Child> fList;
+};
+
+class Child : public GrTLList::Entry<Child> {
+};
+
+#endif
+