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 <unistd.h> 8 #include <linux/types.h> 9 10 enum perf_data_mode { 11 PERF_DATA_MODE_WRITE, 12 PERF_DATA_MODE_READ, 13 }; 14 15 enum perf_dir_version { 16 PERF_DIR_SINGLE_FILE = 0, 17 PERF_DIR_VERSION = 1, 18 }; 19 20 struct perf_data_file { 21 char *path; 22 union { 23 int fd; 24 FILE *fptr; 25 }; 26 unsigned long size; 27 }; 28 29 struct perf_data { 30 const char *path; 31 struct perf_data_file file; 32 bool is_pipe; 33 bool is_dir; 34 bool force; 35 bool use_stdio; 36 bool in_place_update; 37 enum perf_data_mode mode; 38 39 struct { 40 u64 version; 41 struct perf_data_file *files; 42 int nr; 43 } dir; 44 }; 45 46 static inline bool perf_data__is_read(struct perf_data *data) 47 { 48 return data->mode == PERF_DATA_MODE_READ; 49 } 50 51 static inline bool perf_data__is_write(struct perf_data *data) 52 { 53 return data->mode == PERF_DATA_MODE_WRITE; 54 } 55 56 static inline int perf_data__is_pipe(struct perf_data *data) 57 { 58 return data->is_pipe; 59 } 60 61 static inline bool perf_data__is_dir(struct perf_data *data) 62 { 63 return data->is_dir; 64 } 65 66 static inline bool perf_data__is_single_file(struct perf_data *data) 67 { 68 return data->dir.version == PERF_DIR_SINGLE_FILE; 69 } 70 71 static inline int perf_data__fd(struct perf_data *data) 72 { 73 if (data->use_stdio) 74 return fileno(data->file.fptr); 75 76 return data->file.fd; 77 } 78 79 int perf_data__open(struct perf_data *data); 80 void perf_data__close(struct perf_data *data); 81 ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size); 82 ssize_t perf_data__write(struct perf_data *data, 83 void *buf, size_t size); 84 ssize_t perf_data_file__write(struct perf_data_file *file, 85 void *buf, size_t size); 86 /* 87 * If at_exit is set, only rename current perf.data to 88 * perf.data.<postfix>, continue write on original data. 89 * Set at_exit when flushing the last output. 90 * 91 * Return value is fd of new output. 92 */ 93 int perf_data__switch(struct perf_data *data, 94 const char *postfix, 95 size_t pos, bool at_exit, char **new_filepath); 96 97 int perf_data__create_dir(struct perf_data *data, int nr); 98 int perf_data__open_dir(struct perf_data *data); 99 void perf_data__close_dir(struct perf_data *data); 100 int perf_data__update_dir(struct perf_data *data); 101 unsigned long perf_data__size(struct perf_data *data); 102 int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz); 103 bool has_kcore_dir(const char *path); 104 char *perf_data__kallsyms_name(struct perf_data *data); 105 char *perf_data__guest_kallsyms_name(struct perf_data *data, pid_t machine_pid); 106 bool is_perf_data(const char *path); 107 #endif /* __PERF_DATA_H */ 108