SPO-4-NIX-RC1

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ncurses.h>
#include <errno.h>
#include <cstring>

#define MAX_PROCESS_NUMBER 10

void * func( void* );
pthread_mutex_t mu;
int quitThread[MAX_PROCESS_NUMBER];

void initCurses()
{
    initscr();
    clear();
    noecho();
    refresh();
    curs_set(0);
}

int main()
{
    pthread_mutex_init(&mu, NULL);
    initCurses();
    pthread_t handle[MAX_PROCESS_NUMBER];
    int currentThreadCount = 0;
    int isQuit = 0;
    while(isQuit == 0)
    {
        fflush(stdin);
        char c = getch();
        switch ( c )
        {
            case '+':
                if ( currentThreadCount < MAX_PROCESS_NUMBER)
                {
                    quitThread[currentThreadCount] = 0;
                    if (pthread_create(&handle[currentThreadCount], NULL, func, (void*)currentThreadCount) != 0)
                    {
                        printw("pthread_create() failed with error %s\n", strerror(errno));
                        refresh();
                        break;
                    }
                    else
                    {
                        currentThreadCount++;
                    }

                }
                break;
            case '-':
                if(currentThreadCount != 0)
                {
                    quitThread[--currentThreadCount] = 1;
                    if (pthread_join(handle[currentThreadCount], NULL) != 0)
                    {
                        printw("pthread_join(%lu) failed with error %s\n", handle[currentThreadCount] ,strerror(errno));
                        refresh();
                    }
                }
                break;
            case 'q':
                isQuit = 1;
                break;
            default:
                break;
        }
    }
    while( currentThreadCount > 0 )
    {
        quitThread[--currentThreadCount] = 1;
        if (pthread_join(handle[currentThreadCount], 0) != 0)
        {
            printw("pthread_join(%lu) failed with error %s\n", handle[currentThreadCount], strerror(errno));
            refresh();
            break;
        }
    }
    pthread_mutex_destroy(&mu);
    echo();
    endwin();
    return 0;
}

char textStrings[MAX_PROCESS_NUMBER][50] =
{
        "Nirvana ", // was an American rock band that was formed by singer/guitarist Kurt Cobain and bassist Krist Novoselic ",
        "Queen ", //recorded the album A Kind of Magic, containing several reworkings of songs written for the fantasy action film Highlander. ",
        "Scorpions ", //are a rock band from Hannover, Germany formed in 1965 by guitarist Rudolf Schenker. ",
        "Metallica ", //has released nine studio albums, three live albums, five extended plays, 24 music videos, and 45 singles. ",
        "Bon Jovi ", //is an American rock band from Sayreville, New Jersey. ",
        "The Final Countdown ",// is the third studio album by the Swedish hard rock band Europe. Released on 26 May 1986. ",
        "Rammstein ", //was founded  by guitarist Richard Z. Kruspe. In 1989, he escaped to West Berlin and started the band Orgasm Death Gimmicks. ",
        "Louna ", //is a Russian Alternative/Punk rock band, formed in Moscow in 2008 by Tracktor Bowling's musicians Lusine Gevorkyan and Vitaly Demidenko ",
        "Sonic Syndicate ",// is a heavy metal band from Falkenberg, Sweden. ",
        "Skillet ",//is an American Christian rock band formed in Memphis, Tennessee in 1996. ",
    };


void* func(void* param)
{
    int a = (int)param;
    while(quitThread[a] != 1)
    {
        if (pthread_mutex_trylock(&mu) == 0)
        {
            for (int i = 0; textStrings[a][i]; i++)
            {
                printw("%c", textStrings[a][i]);
                refresh();
                usleep(100000);
            }
            printw(" ");
            refresh();
            pthread_mutex_unlock(&mu);
        }
    }
    quitThread[a] = 0;
}