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