gprof/gmon_out.h

   1 /*
   2  * This file specifies the format of gmon.out files.  It should have
   3  * as few external dependencies as possible as it is going to be
   4  * included in many different programs.  That is, minimize the
   5  * number of #include's.
   6  *
   7  * A gmon.out file consists of a header (defined by gmon_hdr) followed
   8  * by a sequence of records.  Each record starts with a one-byte tag
   9  * identifying the type of records, followed by records specific data.
  10  */
  11 #ifndef gmon_out_h
  12 #define gmon_out_h
  13
  14 #define GMON_MAGIC      "gmon"  /* magic cookie */
  15 #define GMON_VERSION    1       /* version number */
  16
  17 /*
  18  * Raw header as it appears on file (without padding):
  19  */
  20 struct gmon_hdr
  21   {
  22     char cookie[4];
  23     char version[4];
  24     char spare[3 * 4];
  25   };
  26
  27 /* types of records in this file: */
  28 typedef enum
  29   {
  30     GMON_TAG_TIME_HIST = 0, GMON_TAG_CG_ARC = 1, GMON_TAG_BB_COUNT = 2
  31   }
  32 GMON_Record_Tag;
  33
  34 struct gmon_hist_hdr
  35   {
  36     char low_pc[sizeof (char*)];        /* base pc address of sample buffer */
  37     char high_pc[sizeof (char*)];       /* max pc address of sampled buffer */
  38     char hist_size[4];                  /* size of sample buffer */
  39     char prof_rate[4];                  /* profiling clock rate */
  40     char dimen[15];                     /* phys. dim., usually "seconds" */
  41     char dimen_abbrev;                  /* usually 's' for "seconds" */
  42   };
  43
  44 struct gmon_cg_arc_record
  45   {
  46     char from_pc[sizeof (char*)];       /* address within caller's body */
  47     char self_pc[sizeof (char*)];       /* address within callee's body */
  48     char count[4];                      /* number of arc traversals */
  49   };
  50
  51 #endif /* gmon_out_h */