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