1 /* 2 * Copyright (C) 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdint.h> 18 #include <type_traits> 19 20 #ifndef SRC_TRACE_PROCESSOR_DB_BASE_ID_H_ 21 #define SRC_TRACE_PROCESSOR_DB_BASE_ID_H_ 22 23 namespace perfetto { 24 namespace trace_processor { 25 26 // Id type which can be used as a base for strongly typed ids. 27 // TypedColumn has support for storing descendents of BaseId seamlessly 28 // in a Column. 29 struct BaseId { 30 BaseId() = default; BaseIdBaseId31 explicit constexpr BaseId(uint32_t v) : value(v) {} 32 33 bool operator==(const BaseId& o) const { return o.value == value; } 34 bool operator!=(const BaseId& o) const { return !(*this == o); } 35 bool operator<(const BaseId& o) const { return value < o.value; } 36 37 uint32_t value; 38 }; 39 static_assert(std::is_trivially_destructible<BaseId>::value, 40 "Inheritance used without trivial destruction"); 41 42 } // namespace trace_processor 43 } // namespace perfetto 44 45 #endif // SRC_TRACE_PROCESSOR_DB_BASE_ID_H_ 46