Remove unnecessary std:: qualifiers
[libs/core.git] / source / debug / profiler.cpp
1 #include <msp/core/maputils.h>
2 #include "profiler.h"
3 #include "profilingscope.h"
4
5 using namespace std;
6
7 namespace Msp {
8 namespace Debug {
9
10 Profiler::Profiler():
11         period(0),
12         inner(0)
13 { }
14
15 void Profiler::set_period(unsigned p)
16 {
17         if(p==period)
18                 return;
19
20         period = p;
21         for(map<string, ScopeInfo>::iterator i=scopes.begin(); i!=scopes.end(); ++i)
22         {
23                 ScopeInfo &si = i->second;
24                 if(p==0)
25                         si.history.clear();
26                 else
27                         si.history.assign(period, CallInfo());
28                 si.hist_pos = 0;
29                 si.hist_full = false;
30         }
31 }
32
33 void Profiler::add_scope(const 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.first_call = scope.get_entry_time();
56                 i->second.history.resize(period);
57         }
58
59         ScopeInfo &si = i->second;
60         ++si.calls;
61         if(scope.get_parent())
62                 ++si.called_from[scope.get_parent()->get_name()];
63         si.total_time += scope.get_time_spent();
64         si.self_time += scope.get_time_spent()-scope.get_child_time();
65         if(period)
66         {
67                 si.avg_time += scope.get_time_spent()/period-si.history[si.hist_pos].duration/period;
68
69                 CallInfo &ci = si.history[si.hist_pos];
70                 Time::TimeStamp old_entry = ci.entry_time;
71                 ci.entry_time = scope.get_entry_time();
72                 ci.duration = scope.get_time_spent();
73
74                 ++si.hist_pos;
75                 if(si.hist_pos>=period)
76                         si.hist_pos -= period;
77
78                 if(si.hist_full)
79                         si.calls_per_sec = period*Time::sec/(scope.get_entry_time()-old_entry);
80                 else if(si.hist_pos>1)
81                         si.calls_per_sec = (si.hist_pos-1)*Time::sec/(scope.get_entry_time()-si.history.front().entry_time);
82
83                 if(si.hist_pos==0)
84                         si.hist_full = true;
85         }
86         else
87         {
88                 si.avg_time = si.total_time/si.calls;
89                 if(si.calls>1)
90                         si.calls_per_sec = (si.calls-1)*Time::sec/(scope.get_entry_time()-si.first_call);
91         }
92 }
93
94 const Profiler::ScopeInfo &Profiler::get_scope(const string &sn) const
95 {
96         return get_item(scopes, sn);
97 }
98
99
100 Profiler::ScopeInfo::ScopeInfo():
101         calls(0),
102         calls_per_sec(0),
103         hist_pos(0),
104         hist_full(false)
105 { }
106
107 } // namespace Debug
108 } // namespace Msp