void readServerConfig(string& serverIPAddr)
{
string serverConfigFile = "serverConfig.txt";
checkFileExistence(serverConfigFile);
ifstream serverConfig(serverConfigFile.c_str());
// read server's IP address
getline(serverConfig,serverIPAddr);
serverConfig.close();
}
/*
* check if files being monitored still exist every 5sec
* filenames given from argv[3] to argv[argc-1]
* if the file does not exist anymore, the process group monitoring its words is killed
*/
void monitorExistence(char *argv[], __pid_t *pgrids, int argc){
if(DEBUG)
printf("I am the existence monitor. My pid: %d. My ppid: %d\n", getpid(), getppid());
while(1){
sleep(5);
int i=3;
for(; i<argc; i++) //trying to open the files
{
int tmp = i-3; //tmp is the matching pid index at pgrid
if(pgrids[tmp] != 0)
{
if(DEBUG)
printf("Verifying existence of %s, that belongs with %d group\n", argv[i], pgrids[tmp]);
if(checkFileExistence(argv[i]) == -1){
killOneProcessGroup(pgrids[tmp]);
pgrids[tmp]=0;
}
}
}
}
}
