lib/profiler/Profiler.h

   1 /*
   2  * Copyright (C) 1996-2021 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef _PROFILER_H_
  10 #define _PROFILER_H_
  11
  12 #ifdef __cplusplus
  13 extern "C" {
  14 #endif
  15
  16 // NP: CPU support for get_tick() determines whether we can profile.
  17 //     always include get_tick.h first since it may undefine USE_XPROF_STATS
  18
  19 #include "profiler/get_tick.h"
  20 #include "profiler/xprof_type.h"
  21
  22 #if !USE_XPROF_STATS
  23
  24 #define PROF_start(probename) ((void)0)
  25 #define PROF_stop(probename) ((void)0)
  26
  27 #else /* USE_XPROF_STATS */
  28
  29 #define XP_NOBEST (hrtime_t)-1
  30
  31 typedef struct _xprof_stats_node xprof_stats_node;
  32
  33 typedef struct _xprof_stats_data xprof_stats_data;
  34
  35 struct _xprof_stats_data {
  36     hrtime_t start;
  37     hrtime_t stop;
  38     hrtime_t delta;
  39     hrtime_t best;
  40     hrtime_t worst;
  41     hrtime_t count;
  42     hrtime_t accum;
  43     int64_t summ;
  44 };
  45
  46 struct _xprof_stats_node {
  47     const char *name;
  48     xprof_stats_data accu;
  49     xprof_stats_data hist;
  50 };
  51
  52 typedef xprof_stats_node TimersArray[1];
  53
  54 /* public Data */
  55 extern TimersArray *xprof_Timers;
  56
  57 /* Exported functions */
  58 extern void xprof_start(xprof_type type, const char *timer);
  59 extern void xprof_stop(xprof_type type, const char *timer);
  60 extern void xprof_event(void *data);
  61
  62 #define PROF_start(probename) xprof_start(XPROF_##probename, #probename)
  63 #define PROF_stop(probename) xprof_stop(XPROF_##probename, #probename)
  64
  65 #endif /* USE_XPROF_STATS */
  66
  67 #ifdef __cplusplus
  68 }
  69 #endif
  70 #endif /* _PROFILING_H_ */
  71