trace2/tr2_dst.h

   1 #ifndef TR2_DST_H
   2 #define TR2_DST_H
   3
   4 struct strbuf;
   5 #include "trace2/tr2_sysenv.h"
   6
   7 struct tr2_dst {
   8         enum tr2_sysenv_variable sysenv_var;
   9         int fd;
  10         unsigned int initialized : 1;
  11         unsigned int need_close : 1;
  12 };
  13
  14 /*
  15  * Disable TRACE2 on the destination.  In TRACE2 a destination (DST)
  16  * wraps a file descriptor; it is associated with a TARGET which
  17  * defines the formatting.
  18  */
  19 void tr2_dst_trace_disable(struct tr2_dst *dst);
  20
  21 /*
  22  * Return the file descriptor for the DST.
  23  * If 0, the dst is closed or disabled.
  24  */
  25 int tr2_dst_get_trace_fd(struct tr2_dst *dst);
  26
  27 /*
  28  * Return true if the DST is opened for writing.
  29  */
  30 int tr2_dst_trace_want(struct tr2_dst *dst);
  31
  32 /*
  33  * Write a single line/message to the trace file.
  34  */
  35 void tr2_dst_write_line(struct tr2_dst *dst, struct strbuf *buf_line);
  36
  37 #endif /* TR2_DST_H */