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 10enum perf_data_mode { 11 PERF_DATA_MODE_WRITE, 12 PERF_DATA_MODE_READ, 13}; 14 15enum perf_dir_version { 16 PERF_DIR_SINGLE_FILE = 0, 17 PERF_DIR_VERSION = 1, 18}; 19 20struct perf_data_file { 21 char *path; 22 union { 23 int fd; 24 FILE *fptr; 25 }; 26 unsigned long size; 27}; 28 29struct 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 46static inline bool perf_data__is_read(struct perf_data *data) 47{ 48 return data->mode == PERF_DATA_MODE_READ; 49} 50 51static inline bool perf_data__is_write(struct perf_data *data) 52{ 53 return data->mode == PERF_DATA_MODE_WRITE; 54} 55 56static inline int perf_data__is_pipe(struct perf_data *data) 57{ 58 return data->is_pipe; 59} 60 61static inline bool perf_data__is_dir(struct perf_data *data) 62{ 63 return data->is_dir; 64} 65 66static inline bool perf_data__is_single_file(struct perf_data *data) 67{ 68 return data->dir.version == PERF_DIR_SINGLE_FILE; 69} 70 71static 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 79int perf_data__open(struct perf_data *data); 80void perf_data__close(struct perf_data *data); 81ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size); 82ssize_t perf_data__write(struct perf_data *data, 83 void *buf, size_t size); 84ssize_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 */ 93int perf_data__switch(struct perf_data *data, 94 const char *postfix, 95 size_t pos, bool at_exit, char **new_filepath); 96 97int perf_data__create_dir(struct perf_data *data, int nr); 98int perf_data__open_dir(struct perf_data *data); 99void perf_data__close_dir(struct perf_data *data); 100int perf_data__update_dir(struct perf_data *data); 101unsigned long perf_data__size(struct perf_data *data); 102int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz); 103bool has_kcore_dir(const char *path); 104char *perf_data__kallsyms_name(struct perf_data *data); 105char *perf_data__guest_kallsyms_name(struct perf_data *data, pid_t machine_pid); 106bool is_perf_data(const char *path); 107#endif /* __PERF_DATA_H */ 108