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 enum perf_data_mode mode; 35 36 struct { 37 u64 version; 38 struct perf_data_file *files; 39 int nr; 40 } dir; 41 }; 42 43 static inline bool perf_data__is_read(struct perf_data *data) 44 { 45 return data->mode == PERF_DATA_MODE_READ; 46 } 47 48 static inline bool perf_data__is_write(struct perf_data *data) 49 { 50 return data->mode == PERF_DATA_MODE_WRITE; 51 } 52 53 static inline int perf_data__is_pipe(struct perf_data *data) 54 { 55 return data->is_pipe; 56 } 57 58 static inline bool perf_data__is_dir(struct perf_data *data) 59 { 60 return data->is_dir; 61 } 62 63 static inline bool perf_data__is_single_file(struct perf_data *data) 64 { 65 return data->dir.version == PERF_DIR_SINGLE_FILE; 66 } 67 68 static inline int perf_data__fd(struct perf_data *data) 69 { 70 if (data->use_stdio) 71 return fileno(data->file.fptr); 72 73 return data->file.fd; 74 } 75 76 int perf_data__open(struct perf_data *data); 77 void perf_data__close(struct perf_data *data); 78 ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size); 79 ssize_t perf_data__write(struct perf_data *data, 80 void *buf, size_t size); 81 ssize_t perf_data_file__write(struct perf_data_file *file, 82 void *buf, size_t size); 83 /* 84 * If at_exit is set, only rename current perf.data to 85 * perf.data.<postfix>, continue write on original data. 86 * Set at_exit when flushing the last output. 87 * 88 * Return value is fd of new output. 89 */ 90 int perf_data__switch(struct perf_data *data, 91 const char *postfix, 92 size_t pos, bool at_exit, char **new_filepath); 93 94 int perf_data__create_dir(struct perf_data *data, int nr); 95 int perf_data__open_dir(struct perf_data *data); 96 void perf_data__close_dir(struct perf_data *data); 97 int perf_data__update_dir(struct perf_data *data); 98 unsigned long perf_data__size(struct perf_data *data); 99 int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz); 100 char *perf_data__kallsyms_name(struct perf_data *data); 101 bool is_perf_data(const char *path); 102 #endif /* __PERF_DATA_H */ 103