1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_DATA_H 3 #define __PERF_DATA_H 4 5 #include <stdio.h> 6 #include <stdbool.h> 7 8 enum perf_data_mode { 9 PERF_DATA_MODE_WRITE, 10 PERF_DATA_MODE_READ, 11 }; 12 13 enum perf_dir_version { 14 PERF_DIR_SINGLE_FILE = 0, 15 PERF_DIR_VERSION = 1, 16 }; 17 18 struct perf_data_file { 19 char *path; 20 union { 21 int fd; 22 FILE *fptr; 23 }; 24 unsigned long size; 25 }; 26 27 struct perf_data { 28 const char *path; 29 struct perf_data_file file; 30 bool is_pipe; 31 bool is_dir; 32 bool force; 33 bool use_stdio; 34 bool in_place_update; 35 enum perf_data_mode mode; 36 37 struct { 38 u64 version; 39 struct perf_data_file *files; 40 int nr; 41 } dir; 42 }; 43 44 static inline bool perf_data__is_read(struct perf_data *data) 45 { 46 return data->mode == PERF_DATA_MODE_READ; 47 } 48 49 static inline bool perf_data__is_write(struct perf_data *data) 50 { 51 return data->mode == PERF_DATA_MODE_WRITE; 52 } 53 54 static inline int perf_data__is_pipe(struct perf_data *data) 55 { 56 return data->is_pipe; 57 } 58 59 static inline bool perf_data__is_dir(struct perf_data *data) 60 { 61 return data->is_dir; 62 } 63 64 static inline bool perf_data__is_single_file(struct perf_data *data) 65 { 66 return data->dir.version == PERF_DIR_SINGLE_FILE; 67 } 68 69 static inline int perf_data__fd(struct perf_data *data) 70 { 71 if (data->use_stdio) 72 return fileno(data->file.fptr); 73 74 return data->file.fd; 75 } 76 77 int perf_data__open(struct perf_data *data); 78 void perf_data__close(struct perf_data *data); 79 ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size); 80 ssize_t perf_data__write(struct perf_data *data, 81 void *buf, size_t size); 82 ssize_t perf_data_file__write(struct perf_data_file *file, 83 void *buf, size_t size); 84 /* 85 * If at_exit is set, only rename current perf.data to 86 * perf.data.<postfix>, continue write on original data. 87 * Set at_exit when flushing the last output. 88 * 89 * Return value is fd of new output. 90 */ 91 int perf_data__switch(struct perf_data *data, 92 const char *postfix, 93 size_t pos, bool at_exit, char **new_filepath); 94 95 int perf_data__create_dir(struct perf_data *data, int nr); 96 int perf_data__open_dir(struct perf_data *data); 97 void perf_data__close_dir(struct perf_data *data); 98 int perf_data__update_dir(struct perf_data *data); 99 unsigned long perf_data__size(struct perf_data *data); 100 int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz); 101 char *perf_data__kallsyms_name(struct perf_data *data); 102 bool is_perf_data(const char *path); 103 #endif /* __PERF_DATA_H */ 104