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 #include <linux/types.h> 8 9 enum perf_data_mode { 10 PERF_DATA_MODE_WRITE, 11 PERF_DATA_MODE_READ, 12 }; 13 14 enum perf_dir_version { 15 PERF_DIR_SINGLE_FILE = 0, 16 PERF_DIR_VERSION = 1, 17 }; 18 19 struct perf_data_file { 20 char *path; 21 union { 22 int fd; 23 FILE *fptr; 24 }; 25 unsigned long size; 26 }; 27 28 struct perf_data { 29 const char *path; 30 struct perf_data_file file; 31 bool is_pipe; 32 bool is_dir; 33 bool force; 34 bool use_stdio; 35 bool in_place_update; 36 enum perf_data_mode mode; 37 38 struct { 39 u64 version; 40 struct perf_data_file *files; 41 int nr; 42 } dir; 43 }; 44 45 static inline bool perf_data__is_read(struct perf_data *data) 46 { 47 return data->mode == PERF_DATA_MODE_READ; 48 } 49 50 static inline bool perf_data__is_write(struct perf_data *data) 51 { 52 return data->mode == PERF_DATA_MODE_WRITE; 53 } 54 55 static inline int perf_data__is_pipe(struct perf_data *data) 56 { 57 return data->is_pipe; 58 } 59 60 static inline bool perf_data__is_dir(struct perf_data *data) 61 { 62 return data->is_dir; 63 } 64 65 static inline bool perf_data__is_single_file(struct perf_data *data) 66 { 67 return data->dir.version == PERF_DIR_SINGLE_FILE; 68 } 69 70 static inline int perf_data__fd(struct perf_data *data) 71 { 72 if (data->use_stdio) 73 return fileno(data->file.fptr); 74 75 return data->file.fd; 76 } 77 78 int perf_data__open(struct perf_data *data); 79 void perf_data__close(struct perf_data *data); 80 ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size); 81 ssize_t perf_data__write(struct perf_data *data, 82 void *buf, size_t size); 83 ssize_t perf_data_file__write(struct perf_data_file *file, 84 void *buf, size_t size); 85 /* 86 * If at_exit is set, only rename current perf.data to 87 * perf.data.<postfix>, continue write on original data. 88 * Set at_exit when flushing the last output. 89 * 90 * Return value is fd of new output. 91 */ 92 int perf_data__switch(struct perf_data *data, 93 const char *postfix, 94 size_t pos, bool at_exit, char **new_filepath); 95 96 int perf_data__create_dir(struct perf_data *data, int nr); 97 int perf_data__open_dir(struct perf_data *data); 98 void perf_data__close_dir(struct perf_data *data); 99 int perf_data__update_dir(struct perf_data *data); 100 unsigned long perf_data__size(struct perf_data *data); 101 int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz); 102 bool has_kcore_dir(const char *path); 103 char *perf_data__kallsyms_name(struct perf_data *data); 104 bool is_perf_data(const char *path); 105 #endif /* __PERF_DATA_H */ 106