108 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __PERF_DATA_H3#define __PERF_DATA_H4 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 to88 * 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