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smamran/Pthread Qt.md

Created March 2, 2016 12:25
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  1. S. M. AMRAN created this gist Mar 2, 2016.
    92 changes: 92 additions & 0 deletions Pthread Qt.md
    View file
    Original file line number Diff line number Diff line change
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    ## C Project
    ### Proj.pro
    ```sh
    QMAKE_CXXFLAGS += -std=c++0x -pthread
    LIBS += -pthread
    ```
    ### main.c
    ```c
    #include <stdio.h>
    #include <stdlib.h>
    #include <pthread.h>
    #include <unistd.h>

    /* Prints x's to stderr. The parameter is unused. Does not return. */
    void print_xs (void* unused)
    {
    while (1){
    fputc ('x', stderr);
    usleep(10000);
    }
    }

    void print_100(void* unused){
    int i = 10000;
    while(i){
    printf("%d",i--);
    usleep(10000);
    }
    }

    int main ()
    {
    pthread_t thread_id;
    pthread_t print_100_thread;

    pthread_create (&thread_id, NULL, print_xs, 0);
    pthread_create (&print_100_thread, NULL, print_100, 0);

    pthread_join(thread_id,NULL);
    pthread_join(print_100_thread, NULL);

    return 0;
    }
    ```
    ## C++ Project
    ### Proj.pro
    ```sh
    QMAKE_CXXFLAGS += -std=c++0x -pthread
    LIBS += -pthread
    ```
    ### main.c

    ```c++
    #include <stdio.h>
    #include <stdlib.h>
    #include <pthread.h>
    #include <unistd.h>

    using namespace std;

    /* Prints x's to stderr. The parameter is unused. Does not return. */
    void *print_xs (void* unused)
    {
    while (1){
    fputc ('x', stderr);
    usleep(10000);
    }
    }

    void *print_100(void* unused){
    int i = 10000;
    while(i){
    printf("%d",i--);
    usleep(10000);
    }
    }

    int main ()
    {
    pthread_t thread_id;
    pthread_t print_100_thread;

    pthread_create (&thread_id, NULL, print_xs, 0);
    pthread_create (&print_100_thread, NULL, print_100, 0);

    pthread_join(thread_id,NULL);
    pthread_join(print_100_thread, NULL);

    return 0;
    }
    ```