ae.utils.bench source code

1 /**
2  * Simple benchmarking/profiling code
3  *
4  * License:
5  *   This Source Code Form is subject to the terms of
6  *   the Mozilla Public License, v. 2.0. If a copy of
7  *   the MPL was not distributed with this file, You
8  *   can obtain one at http://mozilla.org/MPL/2.0/.
9  *
10  * Authors:
11  *   Vladimir Panteleev <ae@cy.md>
12  */
13 
14 deprecated module ae.utils.bench;
15 deprecated:
16 
17 import std.datetime;
18 import ae.sys.timing;
19 
20 MonoTime lastTime;
21 
22 static this()
23 {
24 	lastTime = MonoTime.currTime();
25 }
26 
27 Duration elapsedTime()
28 {
29 	auto c = MonoTime.currTime();
30 	auto d = c - lastTime;
31 	lastTime = c;
32 	return d;
33 }
34 
35 struct TimedAction
36 {
37 	string name;
38 	Duration duration;
39 }
40 
41 TimedAction[] timedActions;
42 size_t[string] timeNameIndices;
43 string currentAction = null;
44 
45 void timeEnd(string action = null)
46 {
47 	if (action && currentAction && action != currentAction)
48 		action = currentAction ~ " / " ~ action;
49 	if (action is null)
50 		action = currentAction;
51 	if (action is null)
52 		action = "other";
53 	currentAction = null;
54 
55 	// ordered
56 	if (action !in timeNameIndices)
57 	{
58 		timeNameIndices[action] = timedActions.length;
59 		timedActions ~= TimedAction(action, elapsedTime());
60 	}
61 	else
62 		timedActions[timeNameIndices[action]].duration += elapsedTime();
63 }
64 
65 
66 void timeStart(string action = null)
67 {
68 	timeEnd();
69 	currentAction = action;
70 }
71 
72 void timeAction(string action, void delegate() p)
73 {
74 	timeStart(action);
75 	p();
76 	timeEnd(action);
77 }
78 
79 void clearTimes()
80 {
81 	timedActions = null;
82 	timeNameIndices = null;
83 	lastTime = MonoTime.currTime();
84 }
85 
86 /// Retrieves current times and clears them.
87 string getTimes()()
88 {
89 	timeEnd();
90 
91 	import std.string, std.array;
92 	string[] lines;
93 	int maxLength;
94 	foreach (action; timedActions)
95 		if (!action.duration.empty)
96 			if (maxLength < action.name.length)
97 				maxLength = action.name.length;
98 	string fmt = format("%%%ds : %%10d (%%s)", maxLength);
99 	foreach (action; timedActions)
100 		if (!action.duration.empty)
101 			lines ~= format(fmt, action.name, action.duration.total!"hnsecs", action.duration);
102 	clearTimes();
103 	return join(lines, "\n");
104 }
105 
106 void dumpTimes()()
107 {
108 	import std.stdio;
109 	import ae.sys.console;
110 	auto times = getTimes();
111 	if (times.length)
112 		writeln(times);
113 }
114 
115 private string[] timeStack;
116 
117 void timePush(string action = null)
118 {
119 	timeStack ~= currentAction;
120 	timeStart(action);
121 }
122 
123 void timePop(string action = null)
124 {
125 	timeEnd(action);
126 	timeStart(timeStack[$-1]);
127 	timeStack = timeStack[0..$-1];
128 }