//The main function.
//Should be pretty simple to understand
void start_func(void *j)
{
MyThread tmp[100];
MySemaphore sem[10];
printf("0. Root thread started.\n");
printf("...<MyThreadCreate>>\n");
tmp[1]=MyThreadCreate(printv,NULL );
printf("1. Created a Test Thread. \n");
printf("...<MyThreadYield>>\n");
MyThreadYield();
tmp[2]=MyThreadCreate(printa,2);
printf("4. Return value from a valid join (0=%i)\n",MyThreadJoin(tmp[2]));
printf("5. Return value from an expired join (-1=%i)\n",MyThreadJoin(tmp[2]));
printf("...<MyThreadJoinAll>>\n");
printf("6. Create three threads & then joinall on them.\n");
tmp[3]=MyThreadCreate(printj,NULL);
tmp[4]=MyThreadCreate(printj,NULL);
tmp[5]=MyThreadCreate(printj,NULL);
MyThreadJoinAll();
printf("7. Returned from Join All. \n");
printf("...<MySemaphoreInit>>\n");
sem[1]=MySemaphoreInit(1);
sem[2]=MySemaphoreInit(2);
sem[3]=MySemaphoreInit(3);
printf("8. Created 3 Semaphores with initialvalues 1,2,3.\n");
printf("...<MySemaphoreWait>>\n");
MySemaphoreWait(sem[1]);
MySemaphoreWait(sem[2]);
MySemaphoreWait(sem[3]);
printf("9. Waited on all three Semaphores should have values 0,1,2.\n");
tmp[6]=MyThreadCreate(semtest,sem[1]);
MyThreadYield();
MySemaphoreSignal(sem[1]);
printf("... Parent Signaled \n");
MyThreadYield();
MySemaphoreWait(sem[2]);
tmp[7]=MyThreadCreate(semtest2,sem[2]);
printf("10. Lets try it in reverse...\n");
printf("...parent waits on a semaphore with value 0.\n");
MySemaphoreWait(sem[2]);
printf("...parent passes through now.\n");
printf("11. Recursively build %i threads ",rcount);
MyThreadCreate(recursion,1);
MyThreadJoinAll();
printf("... success.\n");
rcount=1000;
printf("12. Create a producer/consumer scenario with %i threads",pcount*2);
tmp[8]=MyThreadCreate(producer_consumer,NULL);
MyThreadJoin(tmp[8]);
printf("... success \n");
MyThreadExit();
}
//A recusion test that spawns up to "rcount" threads
void recursion(int i) {
int j;
j=i+1;
if (i < rcount) {
MyThreadCreate(recursion,j);
}
MyThreadYield();
MyThreadExit();
}
void t1(void * who)
{
int i;
printf("t%d start\n", (int)who);
for (i = 0; i < n; i++) {
printf("t%d yield\n", (int)who);
MyThreadYield();
}
printf("t%d end\n", (int)who);
MyThreadExit();
}
int makeThreads(char *me, void (*t)(void *), int many)
{
MyThread T;
int i;
for (i = 0; i < many; i++) {
printf("\n%s create %d\n", me, i);
T = MyThreadCreate(t, (void *)i);
if (yield)
MyThreadYield();
}
if (join)
MyThreadJoin(T);
}
//A simple function that is created and then joined
void printj(void)
{
printf("... Joinall Test\n");
MyThreadYield();
MyThreadExit();
}
