LXR linux/tools/perf/util/data.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __PERF_DATA_H
   3#define __PERF_DATA_H
   4
   5#include <stdbool.h>
   6
   7enum perf_data_mode {
   8        PERF_DATA_MODE_WRITE,
   9        PERF_DATA_MODE_READ,
  10};
  11
  12enum perf_dir_version {
  13        PERF_DIR_SINGLE_FILE    = 0,
  14        PERF_DIR_VERSION        = 1,
  15};
  16
  17struct perf_data_file {
  18        char            *path;
  19        int              fd;
  20        unsigned long    size;
  21};
  22
  23struct perf_data {
  24        const char              *path;
  25        struct perf_data_file    file;
  26        bool                     is_pipe;
  27        bool                     is_dir;
  28        bool                     force;
  29        enum perf_data_mode      mode;
  30
  31        struct {
  32                u64                      version;
  33                struct perf_data_file   *files;
  34                int                      nr;
  35        } dir;
  36};
  37
  38static inline bool perf_data__is_read(struct perf_data *data)
  39{
  40        return data->mode == PERF_DATA_MODE_READ;
  41}
  42
  43static inline bool perf_data__is_write(struct perf_data *data)
  44{
  45        return data->mode == PERF_DATA_MODE_WRITE;
  46}
  47
  48static inline int perf_data__is_pipe(struct perf_data *data)
  49{
  50        return data->is_pipe;
  51}
  52
  53static inline bool perf_data__is_dir(struct perf_data *data)
  54{
  55        return data->is_dir;
  56}
  57
  58static inline bool perf_data__is_single_file(struct perf_data *data)
  59{
  60        return data->dir.version == PERF_DIR_SINGLE_FILE;
  61}
  62
  63static inline int perf_data__fd(struct perf_data *data)
  64{
  65        return data->file.fd;
  66}
  67
  68int perf_data__open(struct perf_data *data);
  69void perf_data__close(struct perf_data *data);
  70ssize_t perf_data__write(struct perf_data *data,
  71                              void *buf, size_t size);
  72ssize_t perf_data_file__write(struct perf_data_file *file,
  73                              void *buf, size_t size);
  74/*
  75 * If at_exit is set, only rename current perf.data to
  76 * perf.data.<postfix>, continue write on original data.
  77 * Set at_exit when flushing the last output.
  78 *
  79 * Return value is fd of new output.
  80 */
  81int perf_data__switch(struct perf_data *data,
  82                           const char *postfix,
  83                           size_t pos, bool at_exit, char **new_filepath);
  84
  85int perf_data__create_dir(struct perf_data *data, int nr);
  86int perf_data__open_dir(struct perf_data *data);
  87void perf_data__close_dir(struct perf_data *data);
  88int perf_data__update_dir(struct perf_data *data);
  89unsigned long perf_data__size(struct perf_data *data);
  90int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);
  91char *perf_data__kallsyms_name(struct perf_data *data);
  92#endif /* __PERF_DATA_H */
  93