1 /* 2 * Copyright (C) 2021 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 #ifndef SRC_TRACE_PROCESSOR_PRELUDE_FUNCTIONS_CREATE_FUNCTION_H_ 18 #define SRC_TRACE_PROCESSOR_PRELUDE_FUNCTIONS_CREATE_FUNCTION_H_ 19 20 #include <sqlite3.h> 21 #include <unordered_map> 22 23 #include "src/trace_processor/prelude/functions/sql_function.h" 24 #include "src/trace_processor/sqlite/scoped_db.h" 25 #include "src/trace_processor/sqlite/sqlite_table.h" 26 27 namespace perfetto { 28 namespace trace_processor { 29 30 // Implementation of CREATE_FUNCTION SQL function. 31 // See https://perfetto.dev/docs/analysis/metrics#metric-helper-functions for 32 // usage of this function. 33 struct CreateFunction : public SqlFunction { 34 struct PerFunctionState { 35 ScopedStmt stmt; 36 // void* to avoid leaking state. 37 void* created_functon_context; 38 }; 39 using Context = SqliteEngine; 40 41 static constexpr bool kVoidReturn = true; 42 43 static base::Status Run(Context* ctx, 44 size_t argc, 45 sqlite3_value** argv, 46 SqlValue& out, 47 Destructors&); 48 }; 49 50 } // namespace trace_processor 51 } // namespace perfetto 52 53 #endif // SRC_TRACE_PROCESSOR_PRELUDE_FUNCTIONS_CREATE_FUNCTION_H_ 54