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