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
  12struct perf_data_file {
  13        const char      *path;
  14        int              fd;
  15};
  16
  17struct perf_data {
  18        struct perf_data_file    file;
  19        bool                     is_pipe;
  20        bool                     force;
  21        unsigned long            size;
  22        enum perf_data_mode      mode;
  23};
  24
  25static inline bool perf_data__is_read(struct perf_data *data)
  26{
  27        return data->mode == PERF_DATA_MODE_READ;
  28}
  29
  30static inline bool perf_data__is_write(struct perf_data *data)
  31{
  32        return data->mode == PERF_DATA_MODE_WRITE;
  33}
  34
  35static inline int perf_data__is_pipe(struct perf_data *data)
  36{
  37        return data->is_pipe;
  38}
  39
  40static inline int perf_data__fd(struct perf_data *data)
  41{
  42        return data->file.fd;
  43}
  44
  45static inline unsigned long perf_data__size(struct perf_data *data)
  46{
  47        return data->size;
  48}
  49
  50int perf_data__open(struct perf_data *data);
  51void perf_data__close(struct perf_data *data);
  52ssize_t perf_data__write(struct perf_data *data,
  53                              void *buf, size_t size);
  54ssize_t perf_data_file__write(struct perf_data_file *file,
  55                              void *buf, size_t size);
  56/*
  57 * If at_exit is set, only rename current perf.data to
  58 * perf.data.<postfix>, continue write on original data.
  59 * Set at_exit when flushing the last output.
  60 *
  61 * Return value is fd of new output.
  62 */
  63int perf_data__switch(struct perf_data *data,
  64                           const char *postfix,
  65                           size_t pos, bool at_exit);
  66#endif /* __PERF_DATA_H */
  67