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

   1#ifndef __PERF_DATA_H
   2#define __PERF_DATA_H
   3
   4#include <stdbool.h>
   5
   6enum perf_data_mode {
   7        PERF_DATA_MODE_WRITE,
   8        PERF_DATA_MODE_READ,
   9};
  10
  11struct perf_data_file {
  12        const char      *path;
  13        int              fd;
  14};
  15
  16struct perf_data {
  17        struct perf_data_file    file;
  18        bool                     is_pipe;
  19        bool                     force;
  20        unsigned long            size;
  21        enum perf_data_mode      mode;
  22};
  23
  24static inline bool perf_data__is_read(struct perf_data *data)
  25{
  26        return data->mode == PERF_DATA_MODE_READ;
  27}
  28
  29static inline bool perf_data__is_write(struct perf_data *data)
  30{
  31        return data->mode == PERF_DATA_MODE_WRITE;
  32}
  33
  34static inline int perf_data__is_pipe(struct perf_data *data)
  35{
  36        return data->is_pipe;
  37}
  38
  39static inline int perf_data__fd(struct perf_data *data)
  40{
  41        return data->file.fd;
  42}
  43
  44static inline unsigned long perf_data__size(struct perf_data *data)
  45{
  46        return data->size;
  47}
  48
  49int perf_data__open(struct perf_data *data);
  50void perf_data__close(struct perf_data *data);
  51ssize_t perf_data__write(struct perf_data *data,
  52                              void *buf, size_t size);
  53ssize_t perf_data_file__write(struct perf_data_file *file,
  54                              void *buf, size_t size);
  55/*
  56 * If at_exit is set, only rename current perf.data to
  57 * perf.data.<postfix>, continue write on original data.
  58 * Set at_exit when flushing the last output.
  59 *
  60 * Return value is fd of new output.
  61 */
  62int perf_data__switch(struct perf_data *data,
  63                           const char *postfix,
  64                           size_t pos, bool at_exit);
  65#endif /* __PERF_DATA_H */
  66