1 /* 2 * Copyright (c) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef _TRACE_TRACE_MARKER_H 17 #define _TRACE_TRACE_MARKER_H 18 19 #define TRACE_MARKER_MESSAGE_LEN 1024 20 21 #ifdef __cplusplus 22 extern "C" 23 { 24 #endif 25 26 /** 27 * @brief Write the function call information to the trace_marker node in kernel space, 28 * used on the same thread as trace_marker_end(),with the symbol "B". 29 * @param message The function of information. 30 * @param value The value which want to trace. 31 */ 32 void trace_marker_begin(const char *message, const char *value); 33 34 /** 35 * @brief Write the terminator to the trace_marker node of the kernel space, 36 * used on the same thread as trace_marker_begin(),with the symbol "E". 37 */ 38 void trace_marker_end(void); 39 40 /** 41 * @brief Write the function call information to the trace_marker node in kernel space, 42 * used in a different thread than trace_marker_async_end(),with the symbol "S". 43 * @param message The function of information. 44 * @param value The value which want to trace. 45 */ 46 void trace_marker_async_begin(const char *message, const char *value, int taskId); 47 48 /** 49 * @brief Write the terminator to the trace_marker node in kernel space, 50 * used in a different thread than trace_marker_async_begin(),with the symbol "F". 51 * @param message The function of information. 52 * @param value The value which want to trace. 53 */ 54 void trace_marker_async_end(const char *message, const char *value, int taskId); 55 56 /** 57 * @brief Marks a pre-traced numeric variable,with the symbol "C". 58 * @param message The function of information. 59 * @param value The value which want to trace. 60 */ 61 void trace_marker_count(const char *message, int value); 62 63 #ifdef __cplusplus 64 } 65 #endif 66 #endif 67