GrBatchPrototype

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/d15e4e45374275c045572b304c229237c4a82be4

Review URL: https://codereview.chromium.org/845103005
diff --git a/src/gpu/GrBatch.cpp b/src/gpu/GrBatch.cpp
new file mode 100644
index 0000000..e1650a6
--- /dev/null
+++ b/src/gpu/GrBatch.cpp
@@ -0,0 +1,35 @@
+#include "GrBatch.h"
+
+#include "GrMemoryPool.h"
+#include "SkTLS.h"
+
+// TODO I noticed a small benefit to using a larger exclusive pool for batches.  Its very small,
+// but seems to be mostly consistent.  There is a lot in flux right now, but we should really
+// revisit this when batch is everywhere
+
+class GrBatch_Globals {
+public:
+    static GrMemoryPool* GetTLS() {
+        return (GrMemoryPool*)SkTLS::Get(CreateTLS, DeleteTLS);
+    }
+
+private:
+    static void* CreateTLS() {
+        return SkNEW_ARGS(GrMemoryPool, (16384, 16384));
+    }
+
+    static void DeleteTLS(void* pool) {
+        SkDELETE(reinterpret_cast<GrMemoryPool*>(pool));
+    }
+};
+
+int32_t GrBatch::gCurrBatchClassID =
+        GrBatch::kIllegalBatchClassID;
+
+void* GrBatch::operator new(size_t size) {
+    return GrBatch_Globals::GetTLS()->allocate(size);
+}
+
+void GrBatch::operator delete(void* target) {
+    GrBatch_Globals::GetTLS()->release(target);
+}