Tswitch

Clients for Tswitch

Save And Restore

Restack

Multiple Stacks

Clients for the F06 Assignment

Simple

Thread Demolition Derby

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This is a very simple test program which just creates and runs two threads. The output is:

First 4 Second 6 First 3 Second 5 First 2 Second 4 First 1 Second 3 First 0 Second 2 Second 1 Second 0 Returned 5 and 7. Bye, now.

thlibt1.c

Thread Demolition Derby

#include <stdio.h>
#include <string.h>
#include <thlib.h>

// This function is run by each of two threads.  They just loop and print,
// then exit with their first arg.
int fred(int i, char *msg)
{
        int origi = i;

        while(i--) {
                printf("%s %d\n", msg, i);
                th_yield();
        }
        th_exit(origi);
}

main()
{
        th_id_t t1, t2;
        int a, b;

        // Start the threads.
        th_init();
        if((t1 = th_fork()) == ARE_CHILD) fred(5,"First");
        if((t2 = th_fork()) == ARE_CHILD) fred(7,"Second");

        // Wait for them to finsh.
        a = th_wait(t1);
        b = th_wait(t2);

        // Say what happened.
        printf("Returned %d and %d.  Bye, now.\n", a, b);
}

Thread Demolition Derby

Simple Two-Thread Test
	Dr. Bennet