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lbsmaps.cpp
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lbsmaps.cpp
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <vector>
#include <errno.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <sys/time.h>
#include "ProcessTable.h"
using namespace std;
void parent(pid_t childPid, char *outputfile, int interval) {
struct timeval start_time;
gettimeofday(&start_time, NULL);
ofstream output;
ostream *myout;
if (outputfile != 0) {
output.open (outputfile);
myout = &output;
} else {
myout = &cout;
}
*myout << "<?xml version=\"1.0\"?>" << endl;
*myout << "<profile main=\"" << childPid << "\"" << ">" << endl;
while(1) {
bc::ProcessTable *t = new bc::ProcessTable();
t->load();
bc::Process *p = t->findById(childPid);
//cout << "*** Listing children processes for " << childPid << endl;
vector<bc::Process *> *all = new vector<bc::Process *>();
p->getAllChildren(all);
struct timeval ti;
gettimeofday(&ti, NULL);
long long cur_time = (long long) (ti.tv_sec - start_time.tv_sec) * 1000000
+ (ti.tv_usec - start_time.tv_usec);
ostringstream os;
os << "<memprof time=\"" << cur_time << "\">" << endl;
for (vector<bc::Process *>::iterator it = all->begin(); it!=all->end(); ++it){
bc::Process *proc = (*it);
//cout << (*it)-> mPid << " " << (*it)->mCommand << " "
// << (*it)->getSize() << " " << (*it)->getRss() << endl;
os << "<process pid=\"" << proc->getPid() << "\" size=\"" << proc->getSize()
<< "\" rss=\"" << proc->getRss() << "\" pss=\"" << proc->getPss()
<< "\">" << proc->getCommand() << "</process>" << endl;
}
os << "</memprof>";
*myout << os.str() << endl;
delete all;
delete t;
// Checking if the child has finished...
struct rusage rusage;
int options = WNOHANG;
int status;
pid_t wres = wait4(childPid, &status, options, &rusage);
if (wres > 0) {
printf("Child has finished...");
break;
}
usleep(interval * 1000);
}
*myout << "</profile>" << endl;
}
void child(char *outputfile, char *command, char *commandArgs[]) {
fprintf(stderr, "Running Command: %s\n", command);
int idx = 0;
while(idx >= 0) {
if(commandArgs[idx] == 0) {
idx = -1;
} else {
fprintf(stderr, "Arg[%d]: %s\n", idx, commandArgs[idx]);
idx++;
}
}
execvp(command, commandArgs);
fprintf(stderr, "ERROR EXECVE");
}
int main(int argc, char *argv[]) {
// Checking the arguments
int first_arg = 1;
char *outputfile = 0;
int interval = 1000;
while(first_arg < argc) {
if (strcmp(argv[first_arg], "-o") == 0) {
outputfile = argv[first_arg+1];
first_arg += 2;
continue;
}
if (strcmp(argv[first_arg], "-i") == 0) {
interval = atoi(argv[first_arg+1]);
first_arg += 2;
continue;
}
break;
}
// any args left ?
if (first_arg >= argc) {
cerr << "Usage: " << argv[0] << " [-o outputfile] [-i interval] <command>" << endl;
return EXIT_FAILURE;
}
char *command = argv[first_arg];
char *commandArgs[argc - first_arg];
for (int i = 0 ; i <=argc - first_arg; i++) {
commandArgs[i] = argv[first_arg + i];
}
commandArgs[argc - first_arg] = 0;
pid_t forkres = fork();
if (forkres < 0) {
fprintf(stderr, "Fork Error: %s\n", strerror(errno));
} else if (forkres == 0) {
child(outputfile, command, commandArgs);
} else {
parent(forkres, outputfile, interval);
}
return EXIT_SUCCESS;
}