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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 | //_________________________________________________________________________ | |
00399209 | 17 | //Basic Memory Leak utility. |
18 | // You can use this tiny class to *see* if your program is leaking. | |
19 | // Usage: | |
ac8cd48d | 20 | // AliMemoryWatcher memwatcher; |
00399209 | 21 | // some program loop on events here { |
22 | // if ( nevents % x == 0 ) | |
23 | // { | |
24 | // // take a sample every x events | |
25 | // memwatcher.watch(nevents); | |
26 | // } | |
27 | // } | |
28 | // TFile f("out.root","RECREATE"); | |
29 | // memwatcher.write(); | |
30 | // f.Close(); | |
31 | // In the output root file you'll get 3 graphs representing | |
32 | // the evolAliPHOSon, as a function of the number of events, of : | |
33 | // - VSIZE is the virtual size (in KBytes) of your program, that is sort of | |
34 | // the total memory used | |
35 | // - RSSIZE is the resident size (in KBytes), that is, the part of your | |
36 | // program which is really in physical memory. | |
37 | // - TIME is an estimate of time per event (really it's the time elasped | |
38 | // between two calls to watch method) | |
39 | // WARNING: this is far from a bulletproof memory report (it's basically | |
40 | // using UNIX command ps -h -p [PID] -o vsize,rssize to do its job). | |
41 | // It has only been tested on Linux so far. | |
42 | // But by fitting the VSIZE by a pol1 under ROOT, you'll see right away | |
43 | // by how much your program is leaking. | |
d60522e4 | 44 | //*-- Author: Laurent Aphecetche(SUBATECH) |
d60522e4 | 45 | // --- std system --- |
b01af8c2 | 46 | class assert ; |
7406fd3c | 47 | #include <malloc.h> |
d60522e4 | 48 | // --- AliRoot header files --- |
ac8cd48d | 49 | #include "AliMemoryWatcher.h" |
d60522e4 | 50 | // --- ROOT system --- |
51 | #include "TSystem.h" | |
52 | #include "TGraph.h" | |
53 | #include "TH2.h" | |
54 | #include "TStopwatch.h" | |
dfe7f75b | 55 | |
ac8cd48d | 56 | ClassImp(AliMemoryWatcher) |
dfe7f75b | 57 | |
d60522e4 | 58 | //_____________________________________________________________________________ |
ac8cd48d | 59 | AliMemoryWatcher::AliMemoryWatcher(UInt_t maxsize) |
d60522e4 | 60 | { |
b01af8c2 | 61 | //ctor |
d60522e4 | 62 | fMAXSIZE=maxsize; |
7406fd3c | 63 | fUseMallinfo = true; |
d60522e4 | 64 | fPID = gSystem->GetPid(); |
65 | sprintf(fCmd,"ps -h -p %d -o vsize,rssize",fPID); | |
b01af8c2 | 66 | fX = new Int_t[fMAXSIZE]; |
67 | fVSIZE = new Int_t[fMAXSIZE]; | |
68 | fRSSIZE = new Int_t[fMAXSIZE]; | |
69 | fTIME = new Double_t[fMAXSIZE]; | |
d60522e4 | 70 | fSize=0; |
71 | fDisabled=false; | |
72 | fTimer=0; | |
73 | } | |
d60522e4 | 74 | //_____________________________________________________________________________ |
d1898505 | 75 | AliMemoryWatcher::AliMemoryWatcher(const AliMemoryWatcher& mw): |
76 | TObject(mw) | |
00399209 | 77 | { |
78 | //copy ctor | |
79 | fMAXSIZE = mw.fMAXSIZE ; | |
7406fd3c | 80 | fUseMallinfo = mw.fUseMallinfo; |
00399209 | 81 | fPID = mw.fPID ; |
82 | strcpy(fCmd, mw.fCmd) ; | |
83 | fX = new Int_t[fMAXSIZE]; | |
84 | fVSIZE = new Int_t[fMAXSIZE]; | |
85 | fRSSIZE = new Int_t[fMAXSIZE]; | |
86 | fTIME = new Double_t[fMAXSIZE]; | |
87 | fSize=0; | |
88 | fDisabled=false; | |
89 | fTimer=0; | |
90 | } | |
91 | //_____________________________________________________________________________ | |
ac8cd48d | 92 | AliMemoryWatcher::~AliMemoryWatcher() |
d60522e4 | 93 | { |
2a6e66b9 | 94 | // dtor |
d60522e4 | 95 | delete[] fVSIZE; |
96 | delete[] fRSSIZE; | |
97 | delete[] fX; | |
98 | delete[] fTIME; | |
99 | delete fTimer; | |
100 | } | |
d60522e4 | 101 | //_____________________________________________________________________________ |
ac8cd48d | 102 | void AliMemoryWatcher::Watch(Int_t x) |
d60522e4 | 103 | { |
b01af8c2 | 104 | // Sets the point where CPU parameters have to be monitored |
d60522e4 | 105 | if ( !fDisabled && fSize < fMAXSIZE ) { |
d60522e4 | 106 | if ( fSize==0 ) { |
107 | assert(fTimer==0); | |
108 | fTimer = new TStopwatch; | |
109 | fTimer->Start(true); | |
110 | fTimer->Stop(); | |
111 | } | |
7406fd3c | 112 | if ( fUseMallinfo ) { |
113 | static struct mallinfo meminfo; | |
114 | meminfo = mallinfo(); | |
d60522e4 | 115 | fX[fSize] = x ; |
7406fd3c | 116 | fVSIZE[fSize] = (meminfo.hblkhd + meminfo.uordblks) / 1024; |
117 | fRSSIZE[fSize] = meminfo.uordblks / 1024; | |
d60522e4 | 118 | fTIME[fSize] = fTimer->CpuTime(); |
119 | fSize++; | |
7406fd3c | 120 | } else { |
121 | static Int_t vsize, rssize; | |
122 | static FILE* pipe = 0; | |
123 | pipe = popen(fCmd,"r"); | |
124 | if ( pipe ) { | |
125 | ||
126 | fscanf(pipe,"%d %d",&vsize,&rssize); | |
127 | ||
128 | fX[fSize] = x ; | |
129 | fVSIZE[fSize] = vsize ; | |
130 | fRSSIZE[fSize] = rssize ; | |
131 | fTIME[fSize] = fTimer->CpuTime(); | |
132 | fSize++; | |
133 | } | |
134 | assert(pclose(pipe)!=-1); | |
d60522e4 | 135 | } |
d60522e4 | 136 | fTimer->Start(true); |
d60522e4 | 137 | } |
138 | else { | |
139 | fDisabled=true; | |
21cd0c07 | 140 | Error("watch", "I'm full !" ) ; |
d60522e4 | 141 | } |
142 | } | |
d60522e4 | 143 | //_____________________________________________________________________________ |
144 | TGraph* | |
ac8cd48d | 145 | AliMemoryWatcher::GraphVSIZE(void) |
d60522e4 | 146 | { |
b01af8c2 | 147 | // Fills the graph with the virtual memory sized used |
d60522e4 | 148 | TGraph* g = 0; |
00399209 | 149 | if ( Size() ) |
d60522e4 | 150 | { |
00399209 | 151 | g = new TGraph(Size()); |
b01af8c2 | 152 | Int_t i ; |
153 | for (i=0; i < g->GetN(); i++ ) { | |
d60522e4 | 154 | g->SetPoint(i,X(i),VSIZE(i)); |
155 | } | |
156 | } | |
157 | return g; | |
158 | } | |
d60522e4 | 159 | //_____________________________________________________________________________ |
160 | TGraph* | |
ac8cd48d | 161 | AliMemoryWatcher::GraphRSSIZE(void) |
d60522e4 | 162 | { |
b01af8c2 | 163 | // Fills the graph with the real memory sized used |
d60522e4 | 164 | TGraph* g = 0; |
00399209 | 165 | if ( Size() ) |
d60522e4 | 166 | { |
00399209 | 167 | g = new TGraph(Size()); |
b01af8c2 | 168 | Int_t i ; |
169 | for (i=0; i < g->GetN(); i++ ) { | |
d60522e4 | 170 | g->SetPoint(i,X(i),RSSIZE(i)); |
171 | } | |
172 | } | |
173 | return g; | |
174 | } | |
d60522e4 | 175 | //_____________________________________________________________________________ |
176 | TGraph* | |
ac8cd48d | 177 | AliMemoryWatcher::GraphTIME(void) |
d60522e4 | 178 | { |
b01af8c2 | 179 | // Fills the raph with the used CPU time |
d60522e4 | 180 | TGraph* g = 0; |
00399209 | 181 | if ( Size() ) |
d60522e4 | 182 | { |
00399209 | 183 | g = new TGraph(Size()); |
b01af8c2 | 184 | Int_t i ; |
185 | for (i=0; i < g->GetN(); i++ ) { | |
d60522e4 | 186 | g->SetPoint(i,X(i),TIME(i)); |
187 | } | |
188 | } | |
189 | return g; | |
190 | } | |
d60522e4 | 191 | //_____________________________________________________________________________ |
192 | TH2* | |
ac8cd48d | 193 | AliMemoryWatcher::Frame(void) const |
d60522e4 | 194 | { |
b01af8c2 | 195 | //creates the frame histo in which the graphs will be plotted |
196 | Double_t xmin=1E30; | |
197 | Double_t xmax=0; | |
198 | Double_t ymin=1; | |
199 | Double_t ymax=0; | |
200 | UInt_t i ; | |
00399209 | 201 | for (i=0; i < Size() ; i++ ) { |
d60522e4 | 202 | if ( X(i) < xmin ) xmin = X(i); |
203 | if ( X(i) > xmax ) xmax = X(i); | |
b01af8c2 | 204 | Double_t y = VSIZE(i)+RSSIZE(i); |
d60522e4 | 205 | if ( y > ymax ) ymax = y; |
d60522e4 | 206 | if ( VSIZE(i) < ymin ) ymin = VSIZE(i); |
207 | if ( RSSIZE(i) < ymin ) ymin = RSSIZE(i); | |
208 | } | |
d60522e4 | 209 | TH2F* h = new TH2F("frame","",10,xmin,xmax,10,ymin*0.8,ymax*1.2); |
d60522e4 | 210 | return h; |
211 | } | |
d60522e4 | 212 | //_____________________________________________________________________________ |
6c4904c2 | 213 | Int_t |
214 | AliMemoryWatcher::Write(const char *, Int_t, Int_t) | |
d60522e4 | 215 | { |
b01af8c2 | 216 | // Stores the graphs in a file |
217 | if ( GraphVSIZE() ) GraphVSIZE()->Write("VSIZE",TObject::kOverwrite); | |
00399209 | 218 | if ( GraphRSSIZE() ) GraphRSSIZE() ->Write("RSSIZE",TObject::kOverwrite); |
b01af8c2 | 219 | if ( GraphTIME() ) GraphTIME()->Write("TIME",TObject::kOverwrite); |
6c4904c2 | 220 | return 0; |
4ed9ed00 | 221 | } |