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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145/* SPDX-License-Identifier: GPL-2.0 */#ifndef __PERF_DATA_H#define __PERF_DATA_H
#include <stdio.h>#include <stdbool.h>#include <unistd.h>#include <linux/types.h>
enum perf_data_mode { PERF_DATA_MODE_WRITE, PERF_DATA_MODE_READ,};
enum perf_dir_version { PERF_DIR_SINGLE_FILE = 0, PERF_DIR_VERSION = 1,};
/** * struct perf_data_file: A wrapper around a file used for perf.data reading or writing. Generally * part of struct perf_data. */struct perf_data_file { /** * @path: Path of file. Generally a copy of perf_data.path but for a * directory it is the file within the directory. */ char *path; union { /** @fd: File descriptor for read/writes. Valid if use_stdio is false. */ int fd; /** * @fptr: Stdio FILE. Valid if use_stdio is true, currently just * pipes in perf inject. */ FILE *fptr; }; /** @size: Size of file when opened. */ unsigned long size; /** @use_stdio: Use buffered stdio operations. */ bool use_stdio;};
/** * struct perf_data: A wrapper around a file used for perf.data reading or writing. */struct perf_data { /** @path: Path to open and of the file. NULL implies 'perf.data' will be used. */ const char *path; /** @file: Underlying file to be used. */ struct perf_data_file file; /** @open: Has the file or directory been opened. */ bool open; /** @is_pipe: Underlying file is a pipe. */ bool is_pipe; /** @is_dir: Underlying file is a directory. */ bool is_dir; /** @force: Ignore opening a file creating created by a different user. */ bool force; /** @in_place_update: A file opened for reading but will be written to. */ bool in_place_update; /** @mode: Read or write mode. */ enum perf_data_mode mode:8;
struct { /** @version: perf_dir_version. */ u64 version; /** @files: perf data files for the directory. */ struct perf_data_file *files; /** @nr: Number of perf data files for the directory. */ int nr; } dir;};
static inline int perf_data_file__fd(struct perf_data_file *file){ return file->use_stdio ? fileno(file->fptr) : file->fd;}
ssize_t perf_data_file__write(struct perf_data_file *file, void *buf, size_t size);off_t perf_data_file__seek(struct perf_data_file *file, off_t offset, int whence);
static inline bool perf_data__is_read(struct perf_data *data){ return data->mode == PERF_DATA_MODE_READ;}
static inline bool perf_data__is_write(struct perf_data *data){ return data->mode == PERF_DATA_MODE_WRITE;}
static inline int perf_data__is_pipe(struct perf_data *data){ return data->is_pipe;}
static inline bool perf_data__is_dir(struct perf_data *data){ return data->is_dir;}
static inline bool perf_data__is_single_file(struct perf_data *data){ return data->dir.version == PERF_DIR_SINGLE_FILE;}
static inline int perf_data__fd(struct perf_data *data){ return perf_data_file__fd(&data->file);}
int perf_data__open(struct perf_data *data);void perf_data__close(struct perf_data *data);ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size);ssize_t perf_data__write(struct perf_data *data, void *buf, size_t size);off_t perf_data__seek(struct perf_data *data, off_t offset, int whence);/* * If at_exit is set, only rename current perf.data to * perf.data.<postfix>, continue write on original data. * Set at_exit when flushing the last output. * * Return value is fd of new output. */int perf_data__switch(struct perf_data *data, const char *postfix, size_t pos, bool at_exit, char **new_filepath);
int perf_data__create_dir(struct perf_data *data, int nr);int perf_data__open_dir(struct perf_data *data);void perf_data__close_dir(struct perf_data *data);unsigned long perf_data__size(struct perf_data *data);int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);char *perf_data__kallsyms_name(struct perf_data *data);char *perf_data__guest_kallsyms_name(struct perf_data *data, pid_t machine_pid);
bool has_kcore_dir(const char *path);bool is_perf_data(const char *path);
#endif /* __PERF_DATA_H */