ceph/src/common/EventTrace.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2016 Intel Corporation.
   7  * All rights reserved.
   8  *
   9  * Author: Anjaneya Chagam <anjaneya.chagam@intel.com>
  10  *
  11  * This is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License version 2.1, as published by the Free Software
  14  * Foundation.  See file COPYING.
  15  *
  16  */
  17
  18 #ifndef _EventTrace_h_
  19 #define _EventTrace_h_
  20
  21 #include <string>
  22 #include "msg/Message.h"
  23 #include "common/ceph_context.h"
  24
  25 #if defined(WITH_LTTNG) && defined(WITH_EVENTTRACE)
  26
  27 #define OID_EVENT_TRACE(oid, event) \
  28   EventTrace::trace_oid_event(oid, event, "", __FILE__, __func__, __LINE__)
  29 #define OID_EVENT_TRACE_WITH_MSG(msg, event, incl_oid) \
  30   EventTrace::trace_oid_event(msg, event, __FILE__, __func__, __LINE__, incl_oid)
  31 #define OID_ELAPSED(oid, elapsed, event) \
  32   EventTrace::trace_oid_elapsed(oid, event, "", elapsed, __FILE__, __func__, __LINE__)
  33 #define OID_ELAPSED_WITH_MSG(m, elapsed, event, incl_oid) \
  34   EventTrace::trace_oid_elapsed(m, event, elapsed, __FILE__, __func__, __LINE__, incl_oid)
  35 #define FUNCTRACE() EventTrace _t1(g_ceph_context, __FILE__, __func__, __LINE__)
  36 #define OID_ELAPSED_FUNC_EVENT(event) _t1.log_event_latency(event)
  37
  38 #else
  39
  40 #define OID_EVENT_TRACE(oid, event)
  41 #define OID_EVENT_TRACE_WITH_MSG(msg, event, incl_oid)
  42 #define OID_ELAPSED(oid, elapsed, event)
  43 #define OID_ELAPSED_WITH_MSG(m, elapsed, event, incl_oid)
  44 #define FUNCTRACE()
  45 #define OID_ELAPSED_FUNC_EVENT(event)
  46
  47 #endif
  48
  49 #define LOG_LEVEL 1
  50
  51 class EventTrace {
  52 private:
  53   CephContext *ctx;
  54   string file;
  55   string func;
  56   int line;
  57   utime_t last_ts;
  58
  59   static bool tpinit;
  60
  61   static void init_tp(CephContext *_ctx);
  62   static void set_message_attrs(const Message *m, string& oid, string& context, bool incl_oid);
  63
  64 public:
  65
  66   EventTrace(CephContext *_ctx, const char *_file, const char *_func, int line);
  67   ~EventTrace();
  68   void log_event_latency(const char *tag);
  69
  70   static void trace_oid_event(const char *oid, const char *event, const char *context,
  71     const char *file, const char *func, int line);
  72   static void trace_oid_event(const Message *m, const char *event, const char *file,
  73     const char *func, int line, bool incl_oid);
  74
  75   static void trace_oid_elapsed(const char *oid, const char *event, const char *context,
  76     double elapsed, const char *file, const char *func, int line);
  77   static void trace_oid_elapsed(const Message *m, const char *event, double elapsed,
  78     const char *file, const char *func, int line, bool incl_oid);
  79
  80 };
  81 #endif