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/*
This file is part of procinfo-NG
procinfo-NG is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2.
procinfo-NG is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with procinfo-NG; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// Procinfo-NG is Copyright tabris@tabris.net 2007, 2008, 2009
// returns multiple lists of uint64s, cpuDiffs, intrDiffs, and a list consisting of context-switches and the boot-time
vector <vector <uint64_t> > getProcStat(bool showTotals, const uint32_t CPUcount, const double elapsed) {
vector <string> lines = readFile(string("/proc/stat"));
vector <uint64_t> cpuDiff, cpuStat, intrDiff, intrStat;
static vector <uint64_t> oldCPUstat, oldIntrStat;
static uint64_t oldCtxtStat = 0;
uint64_t ctxtStat, ctxtDiff, bootTime;
uint64_t cpuTotal = 0;
for(uint32_t i = 0; i < lines.size(); i++) {
vector <string> tokens = splitString(" ", lines[i]);
if (!tokens.size()) break; // a) prevents SIGSEGV b) skips empty lines
if(tokens[0] == "cpu") {
tokens.erase(tokens.begin()); // pop the first token off.
cpuStat = stringVec2uint64Vec(tokens);
if(!oldCPUstat.size())
oldCPUstat.resize(cpuStat.size());
cpuDiff = (showTotals ? cpuStat : subVec(cpuStat, oldCPUstat));
for(uint32_t i = 0; i < cpuStat.size(); i++)
cpuTotal += cpuStat[i];
oldCPUstat.assign(cpuStat.begin(), cpuStat.end());
cpuDiff.push_back(cpuTotal);
} else if(tokens[0] == "ctxt") {
ctxtStat = string2uint64(tokens[1]);
ctxtDiff = (showTotals ? ctxtStat : ctxtStat - oldCtxtStat);
oldCtxtStat = ctxtStat;
} else if(tokens[0] == "btime") {
bootTime = string2uint64(tokens[1]);
}
}
vector <vector <uint64_t> > stats(3);
stats[0] = cpuDiff;
stats[1] = intrDiff;
stats[2].push_back(ctxtDiff);
stats[2].push_back(bootTime);
return stats;
}
// returns the contents of /proc/vmstat, only the parts we want.
// as such it returns a vector of 4 elements, pageInDiff, pageOutDiff, swapInDiff, swapOutDiff
vector <uint64_t> getVMstat(bool showTotals) {
vector <string> lines = readFile(string("/proc/stat"));
static uint64_t oldPageIn = 0, oldPageOut = 0, oldSwapIn = 0, oldSwapOut = 0;
uint64_t pageIn = 0, pageOut = 0, swapIn = 0, swapOut = 0;
uint64_t pageInDiff = 0, pageOutDiff = 0, swapInDiff = 0, swapOutDiff = 0;
static uint64_t oldPageAct = 0, oldPageDeact = 0, oldPageFault = 0;
uint64_t pageAct = 0, pageDeact = 0, pageFault = 0;
uint64_t pageActDiff = 0, pageDeactDiff = 0, pageFaultDiff = 0;
for(uint32_t i = 0; i < lines.size(); i++) {
vector <string> tokens = splitString(" ", lines[i]);
if (!tokens.size()) break;
if(tokens[0] == "page") {
pageIn = string2uint64(tokens[1]);
pageInDiff = (showTotals ? pageIn : pageIn - oldPageIn);
oldPageIn = pageIn;
pageOut = string2uint64(tokens[2]);
pageOutDiff = (showTotals ? pageOut : pageOut - oldPageOut);
oldPageOut = pageOut;
} else if(tokens[0] == "swap") {
swapIn = string2uint64(tokens[1]);
swapInDiff = (showTotals ? swapIn : swapIn - oldSwapIn);
oldSwapIn = swapIn;
swapOut = string2uint64(tokens[2]);
swapOutDiff = (showTotals ? swapOut : swapOut - oldSwapOut);
oldSwapOut = swapOut;
}
}
vector <uint64_t> vmStat;
vmStat.push_back(pageInDiff);
vmStat.push_back(pageOutDiff);
vmStat.push_back(swapInDiff);
vmStat.push_back(swapOutDiff);
return vmStat;
}
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