]>
Commit | Line | Data |
---|---|---|
d60522e4 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | /* $Id$ */ | |
16 | //_________________________________________________________________________ | |
17 | /*Basic Memory Leak utility. | |
18 | ||
19 | You can use this tiny class to *see* if your program is leaking. | |
d60522e4 | 20 | Usage: |
d60522e4 | 21 | AliPHOSMemoryWatcher memwatcher; |
d60522e4 | 22 | some program loop on events here { |
23 | if ( nevents % x == 0 ) | |
24 | { | |
25 | // take a sample every x events | |
26 | memwatcher.watch(nevents); | |
27 | } | |
28 | } | |
d60522e4 | 29 | TFile f("out.root","RECREATE"); |
30 | memwatcher.write(); | |
31 | f.Close(); | |
d60522e4 | 32 | In the output root file you'll get 3 graphs representing |
33 | the evolAliPHOSon, as a function of the number of events, of : | |
34 | - VSIZE is the virtual size (in KBytes) of your program, that is sort of | |
35 | the total memory used | |
36 | - RSSIZE is the resident size (in KBytes), that is, the part of your | |
37 | program which is really in physical memory. | |
38 | - TIME is an estimate of time per event (really it's the time elasped | |
39 | between two calls to watch method) | |
d60522e4 | 40 | WARNING: this is far from a bulletproof memory report (it's basically |
41 | using UNIX command ps -h -p [PID] -o vsize,rssize to do its job). | |
42 | It has only been tested on Linux so far. | |
43 | ||
44 | But by fitting the VSIZE by a pol1 under ROOT, you'll see right away | |
45 | by how much your program is leaking. | |
46 | */ | |
47 | //*-- Author: Laurent Aphecetche(SUBATECH) | |
d60522e4 | 48 | // --- std system --- |
25d89c9f | 49 | #include <stdio.h> |
50 | #include <stdlib.h> | |
51 | #include <assert.h> | |
d60522e4 | 52 | // --- AliRoot header files --- |
53 | #include "AliPHOSMemoryWatcher.h" | |
d60522e4 | 54 | // --- ROOT system --- |
55 | #include "TSystem.h" | |
56 | #include "TGraph.h" | |
57 | #include "TH2.h" | |
58 | #include "TStopwatch.h" | |
dfe7f75b | 59 | |
60 | ClassImp(AliPHOSMemoryWatcher) | |
61 | ||
d60522e4 | 62 | //_____________________________________________________________________________ |
63 | AliPHOSMemoryWatcher::AliPHOSMemoryWatcher(unsigned int maxsize) | |
64 | { | |
65 | fMAXSIZE=maxsize; | |
66 | fPID = gSystem->GetPid(); | |
67 | sprintf(fCmd,"ps -h -p %d -o vsize,rssize",fPID); | |
d60522e4 | 68 | fX = new int[fMAXSIZE]; |
69 | fVSIZE = new int[fMAXSIZE]; | |
70 | fRSSIZE = new int[fMAXSIZE]; | |
71 | fTIME = new double[fMAXSIZE]; | |
72 | fSize=0; | |
73 | fDisabled=false; | |
74 | fTimer=0; | |
75 | } | |
d60522e4 | 76 | //_____________________________________________________________________________ |
77 | AliPHOSMemoryWatcher::~AliPHOSMemoryWatcher() | |
78 | { | |
79 | delete[] fVSIZE; | |
80 | delete[] fRSSIZE; | |
81 | delete[] fX; | |
82 | delete[] fTIME; | |
83 | delete fTimer; | |
84 | } | |
d60522e4 | 85 | //_____________________________________________________________________________ |
86 | void AliPHOSMemoryWatcher::watch(int x) | |
87 | { | |
88 | if ( !fDisabled && fSize < fMAXSIZE ) { | |
d60522e4 | 89 | if ( fSize==0 ) { |
90 | assert(fTimer==0); | |
91 | fTimer = new TStopwatch; | |
92 | fTimer->Start(true); | |
93 | fTimer->Stop(); | |
94 | } | |
d60522e4 | 95 | static int vsize, rssize; |
d60522e4 | 96 | static FILE* pipe = 0; |
d60522e4 | 97 | pipe = popen(fCmd,"r"); |
d60522e4 | 98 | if ( pipe ) { |
99 | ||
100 | fscanf(pipe,"%d %d",&vsize,&rssize); | |
101 | ||
102 | fX[fSize] = x ; | |
103 | fVSIZE[fSize] = vsize ; | |
104 | fRSSIZE[fSize] = rssize ; | |
105 | fTIME[fSize] = fTimer->CpuTime(); | |
106 | fSize++; | |
107 | } | |
d60522e4 | 108 | assert(pclose(pipe)!=-1); |
d60522e4 | 109 | fTimer->Start(true); |
d60522e4 | 110 | } |
111 | else { | |
112 | fDisabled=true; | |
21cd0c07 | 113 | Error("watch", "I'm full !" ) ; |
d60522e4 | 114 | } |
115 | } | |
d60522e4 | 116 | //_____________________________________________________________________________ |
117 | TGraph* | |
118 | AliPHOSMemoryWatcher::graphVSIZE(void) | |
119 | { | |
120 | TGraph* g = 0; | |
d60522e4 | 121 | if ( size() ) |
122 | { | |
123 | g = new TGraph(size()); | |
124 | for (int i=0; i < g->GetN(); i++ ) { | |
125 | g->SetPoint(i,X(i),VSIZE(i)); | |
126 | } | |
127 | } | |
128 | return g; | |
129 | } | |
d60522e4 | 130 | //_____________________________________________________________________________ |
131 | TGraph* | |
132 | AliPHOSMemoryWatcher::graphRSSIZE(void) | |
133 | { | |
134 | TGraph* g = 0; | |
135 | if ( size() ) | |
136 | { | |
137 | g = new TGraph(size()); | |
138 | for (int i=0; i < g->GetN(); i++ ) { | |
139 | g->SetPoint(i,X(i),RSSIZE(i)); | |
140 | } | |
141 | } | |
142 | return g; | |
143 | } | |
d60522e4 | 144 | //_____________________________________________________________________________ |
145 | TGraph* | |
146 | AliPHOSMemoryWatcher::graphTIME(void) | |
147 | { | |
148 | TGraph* g = 0; | |
149 | if ( size() ) | |
150 | { | |
151 | g = new TGraph(size()); | |
152 | for (int i=0; i < g->GetN(); i++ ) { | |
153 | g->SetPoint(i,X(i),TIME(i)); | |
154 | } | |
155 | } | |
156 | return g; | |
157 | } | |
d60522e4 | 158 | //_____________________________________________________________________________ |
159 | TH2* | |
160 | AliPHOSMemoryWatcher::frame(void) | |
161 | { | |
162 | double xmin=1E30; | |
163 | double xmax=0; | |
164 | double ymin=1; | |
165 | double ymax=0; | |
d60522e4 | 166 | for (unsigned int i=0; i < size() ; i++ ) { |
167 | if ( X(i) < xmin ) xmin = X(i); | |
168 | if ( X(i) > xmax ) xmax = X(i); | |
d60522e4 | 169 | double y = VSIZE(i)+RSSIZE(i); |
d60522e4 | 170 | if ( y > ymax ) ymax = y; |
d60522e4 | 171 | if ( VSIZE(i) < ymin ) ymin = VSIZE(i); |
172 | if ( RSSIZE(i) < ymin ) ymin = RSSIZE(i); | |
173 | } | |
d60522e4 | 174 | TH2F* h = new TH2F("frame","",10,xmin,xmax,10,ymin*0.8,ymax*1.2); |
d60522e4 | 175 | return h; |
176 | } | |
d60522e4 | 177 | //_____________________________________________________________________________ |
178 | void | |
179 | AliPHOSMemoryWatcher::write(void) | |
180 | { | |
181 | if ( graphVSIZE() ) graphVSIZE()->Write("VSIZE",TObject::kOverwrite); | |
182 | if ( graphRSSIZE() ) graphRSSIZE()->Write("RSSIZE",TObject::kOverwrite); | |
183 | if ( graphTIME() ) graphTIME()->Write("TIME",TObject::kOverwrite); | |
4ed9ed00 | 184 | } |