source/debug/profiler.cpp

   1 #include <msp/core/maputils.h>
   2 #include <msp/time/units.h>
   3 #include "profiler.h"
   4 #include "profilingscope.h"
   5
   6 using namespace std;
   7
   8 namespace Msp {
   9 namespace Debug {
  10
  11 Profiler::Profiler():
  12         period(0),
  13         inner(0)
  14 { }
  15
  16 void Profiler::set_period(unsigned p)
  17 {
  18         if(p==period)
  19                 return;
  20
  21         period = p;
  22         for(map<string, ScopeInfo>::iterator i=scopes.begin(); i!=scopes.end(); ++i)
  23         {
  24                 ScopeInfo &si = i->second;
  25                 if(p==0)
  26                         si.history.clear();
  27                 else
  28                         si.history.assign(period, Time::zero);
  29                 si.hist_pos = 0;
  30         }
  31 }
  32
  33 void Profiler::add_scope(const std::string &name)
  34 {
  35         if(!scopes.count(name))
  36         {
  37                 map<string, ScopeInfo>::iterator i = scopes.insert(map<string, ScopeInfo>::value_type(name, ScopeInfo())).first;
  38                 i->second.history.resize(period);
  39         }
  40 }
  41
  42 ProfilingScope *Profiler::enter(ProfilingScope *ps)
  43 {
  44         ProfilingScope *old = inner;
  45         inner = ps;
  46         return old;
  47 }
  48
  49 void Profiler::record(const ProfilingScope &scope)
  50 {
  51         map<string, ScopeInfo>::iterator i = scopes.find(scope.get_name());
  52         if(i==scopes.end())
  53         {
  54                 i = scopes.insert(map<string, ScopeInfo>::value_type(scope.get_name(), ScopeInfo())).first;
  55                 i->second.history.resize(period);
  56         }
  57
  58         ScopeInfo &si = i->second;
  59         ++si.calls;
  60         if(scope.get_parent())
  61                 ++si.called_from[scope.get_parent()->get_name()];
  62         si.total_time += scope.get_time_spent();
  63         si.self_time += scope.get_time_spent()-scope.get_child_time();
  64         if(period)
  65         {
  66                 si.avg_time += scope.get_time_spent()/period-si.history[si.hist_pos]/period;
  67                 si.history[si.hist_pos++] = scope.get_time_spent();
  68                 if(si.hist_pos>=period)
  69                         si.hist_pos -= period;
  70         }
  71         else
  72                 si.avg_time = si.total_time/si.calls;
  73 }
  74
  75 const Profiler::ScopeInfo &Profiler::get_scope(const string &sn) const
  76 {
  77         return get_item(scopes, sn);
  78 }
  79
  80
  81 Profiler::ScopeInfo::ScopeInfo():
  82         calls(0),
  83         hist_pos(0)
  84 { }
  85
  86 } // namespace Debug
  87 } // namespace Msp