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kt.c
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kt.c
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#include "types.h"
#include "stat.h"
#include "user.h"
static int lock;
static int cond;
/*
int common=5;
void* thread()
{
int k;
kthread_mutex_lock(lock);
for(k=0; k< 20; k++)
printf(1, "my name is :%d\n",kthread_id());
//sleep(300);
kthread_mutex_unlock(lock);
kthread_exit();
return (void *)1;
}
void* thread1(){
kthread_mutex_lock(lock1);
sleep(200);
kthread_mutex_lock(lock2);
kthread_mutex_unlock(lock2);
kthread_mutex_unlock(lock1);
kthread_exit();
return (void *)1;
}
void* thread2(){
kthread_mutex_lock(lock2);
sleep(200);
kthread_mutex_lock(lock1);
kthread_mutex_unlock(lock1);
kthread_mutex_unlock(lock2);
kthread_exit();
return (void *)2;
}
int main(void)
{
int i;
kthread_mutex_alloc();
void* stack;// =malloc(4000);
for(i = 0; i < 25; i++) {
stack =malloc(4000);
kthread_create(thread,stack,4000);
}
//(20);
// sleep(2000);
// kthread_mutex_dealloc(lock);
exit();
}
*/
void * thread1 (void){
printf(1, "I went to sleep %d\n", kthread_id());
kthread_mutex_lock(lock);
kthread_cond_wait(cond, lock);
printf(1, "im came alive!! %d\n", kthread_id());
kthread_mutex_unlock(lock);
kthread_exit();
return (void *) 0;
}
void * thread2 (void){
kthread_mutex_lock(lock);
printf(1,"I will wake him up!! %d", kthread_id());
kthread_cond_signal(cond);
kthread_exit();
return (void *) 0;
}
int main(void){
lock = kthread_mutex_alloc();
cond = kthread_cond_alloc();
int i;
void* stack;// =malloc(4000);
for(i = 0; i< 20; i++){
stack =malloc(4000);
kthread_create(thread1,stack,4000);
}
for(i = 0; i< 20; i++){
stack =malloc(4000);
kthread_create(thread2,stack,4000);
}
exit();
//return (void *) 0;
}