Lab_2/15var (IV semester) OS&SP

//child.exe
#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>

int main(int argc, char *argv[])
{
    std::cout << "Child started" << std::endl;
    std::cout << "Count arguments: " << argc << std::endl;
    std::cout << "Arguments:" << std::endl;
    for (int i = 0; i < argc; i++) {
        std::cout << i+1 << ") " << argv[i] << std::endl;
    }
    system("pause");
    std::cout << "Child destroyed" << std::endl;
    return 0;
}

//parent_1_1.exe
#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <process.h>
#include <time.h>

void main()
{
    std::cout << "Parent_1_1 started" << std::endl;
    time_t rawtime;
    struct tm * timeinfo;
    time(&rawtime);
    timeinfo = localtime(&rawtime);
    std::cout << "Parent_1_1 call <execl(char *fname, char *arg0, ..., char *argN, NULL)> child.exe" << std::endl;
    if (execl("child.exe", "Parent_1_1", "username", "password", "email", asctime(timeinfo), NULL) == -1)
        std::cout << "Error: " << errno << std::endl;
    else
        std::cout << "All is well" << std::endl;
}

//parent_1_2.exe
#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <process.h>
#include <time.h>

void main()
{
    std::cout << "Parent_1_2 started" << std::endl;
    time_t rawtime;
    struct tm * timeinfo;
    time(&rawtime);
    timeinfo = localtime(&rawtime);
    std::cout << "Parent_1_2 call <spawnl(int mode, char *fname, char *arg0, ..., char *argN, NULL)> child.exe" << std::endl;
    if (spawnl(P_WAIT, "child.exe", "Parent_1_2", "username", "password", "email", asctime(timeinfo), NULL) == -1)
        std::cout << "Error: " << errno << std::endl;
    else
        std::cout << "All is well" << std::endl;
    std::cout << "Parent_1_2 destroyed" << std::endl;
    system("pause");
}

//parent_2_1.exe
#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <process.h>
#include <time.h>
#include <vector>

void main()
{
    std::cout << "Parent_2_1 started" << std::endl;
    time_t rawtime;
    struct tm * timeinfo;
    time(&rawtime);
    timeinfo = localtime(&rawtime);
    std::vector<char*> commandVector;

    commandVector.push_back(const_cast<char*>("child.exe"));
    commandVector.push_back(const_cast<char*>("Parent_2_1"));
    commandVector.push_back(const_cast<char*>("username"));
    commandVector.push_back(const_cast<char*>("password"));
    commandVector.push_back(const_cast<char*>("email"));
    commandVector.push_back(const_cast<char*>(asctime(timeinfo)));
    commandVector.push_back(NULL);

    std::cout << "Parent_2_1 call <execv(char *fname, char *arg[ ])> child.exe" << std::endl;
    if (execv(commandVector[0], &commandVector[0]) == -1)
        std::cout << "Error: " << errno << std::endl;
    else
        std::cout << "All is well" << std::endl;
    std::cout << "Parent_2_1 destroyed" << std::endl;
    system("pause");
}

//parent_2_2.exe
#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <process.h>
#include <time.h>
#include <vector>

void main()
{
    std::cout << "Parent_2_2 started" << std::endl;
    time_t rawtime;
    struct tm * timeinfo;
    time(&rawtime);
    timeinfo = localtime(&rawtime);
    std::vector<char*> commandVector;

    commandVector.push_back(const_cast<char*>("child.exe"));
    commandVector.push_back(const_cast<char*>("Parent_2_2"));
    commandVector.push_back(const_cast<char*>("username"));
    commandVector.push_back(const_cast<char*>("password"));
    commandVector.push_back(const_cast<char*>("email"));
    commandVector.push_back(const_cast<char*>(asctime(timeinfo)));

    std::cout << "Parent_2_2 call <spawnv(int mode, char *fname, char *arg[ ])> child.exe" << std::endl;
    if (spawnv(P_WAIT, commandVector[0], &commandVector[0]) == -1)
        std::cout << "Error: " << errno << std::endl;
    else
        std::cout << "All is well" << std::endl;
    std::cout << "Parent_2_2 destroyed" << std::endl;
    system("pause");
}