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