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