diff options
Diffstat (limited to 'tools/perf/util/data.h')
| -rw-r--r-- | tools/perf/util/data.h | 53 |
1 files changed, 44 insertions, 9 deletions
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h index 110f3ebde30f..8299fb5fa7da 100644 --- a/tools/perf/util/data.h +++ b/tools/perf/util/data.h @@ -17,32 +17,70 @@ enum perf_dir_version { 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; + /** @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; - bool use_stdio; + /** @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; 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; @@ -70,10 +108,7 @@ static inline bool perf_data__is_single_file(struct perf_data *data) static inline int perf_data__fd(struct perf_data *data) { - if (data->use_stdio) - return fileno(data->file.fptr); - - return data->file.fd; + return perf_data_file__fd(&data->file); } int perf_data__open(struct perf_data *data); @@ -81,8 +116,7 @@ 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); -ssize_t perf_data_file__write(struct perf_data_file *file, - 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. @@ -97,11 +131,12 @@ int perf_data__switch(struct perf_data *data, 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); -int perf_data__update_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); -bool has_kcore_dir(const char *path); 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 */ |