tools/perf/util/data.h

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