chore: import upstream snapshot with attribution

test/cpp/phi/core/allocator.h

@@ -0,0 +1,38 @@
+/* Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+
+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. */
+
+#pragma once
+
+#include <memory>
+
+#include "paddle/phi/core/allocator.h"
+
+namespace phi {
+namespace tests {
+
+class FancyAllocator : public phi::Allocator {
+ public:
+  static void Delete(Allocation* allocation) {
+    ::operator delete(allocation->ptr());
+  }
+
+  AllocationPtr Allocate(size_t bytes_size) override {
+    void* data = ::operator new(bytes_size);
+    auto* allocation = new phi::Allocation(data, bytes_size, phi::CPUPlace());
+    return AllocationPtr(allocation, Delete);
+  }
+};
+
+}  // namespace tests
+}  // namespace phi