1 // 2 // 3 // Copyright 2017 gRPC authors. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 // 17 // 18 19 #ifndef GRPC_SRC_CORE_UTIL_MEMORY_H 20 #define GRPC_SRC_CORE_UTIL_MEMORY_H 21 22 #include <grpc/support/alloc.h> 23 #include <grpc/support/port_platform.h> 24 25 #include <memory> 26 #include <type_traits> 27 28 namespace grpc_core { 29 30 class DefaultDeleteChar { 31 public: operator()32 void operator()(char* p) { 33 if (p == nullptr) return; 34 gpr_free(p); 35 } 36 }; 37 38 // UniquePtr<T> is only allowed for char and UniquePtr<char> is deprecated 39 // in favor of std::string. UniquePtr<char> is equivalent std::unique_ptr 40 // except that it uses gpr_free for deleter. 41 template <typename T> 42 using UniquePtr = std::unique_ptr<T, DefaultDeleteChar>; 43 44 template <class T> Zalloc()45T* Zalloc() { 46 static_assert(std::is_trivial<T>::value, "Type should be trivial"); 47 return static_cast<T*>(gpr_zalloc(sizeof(T))); 48 } 49 50 } // namespace grpc_core 51 52 #endif // GRPC_SRC_CORE_UTIL_MEMORY_H 53