Multithreading in C Tutorial - Part 5 (pthread_yield)

Calling pthread_yield api by any thread will give up the cpu to the other threads.The current thread will be placed in the end of the run queue and another thread will be scheduled by the scheduler

Syntax: int pthread_yield(void);

Returns 0 on success and error value on error.


Example Code:


#include <stdio.h>
#include <pthread.h>


pthread_t tid[2];


void *thread_fn1(void *arg)
{
int err = pthread_yield();
perror("pthread_yield");
printf("Thread 1 in execution\n");
pthread_exit(NULL);
}

void *thread_fn2(void *arg)
{
printf("Thread 2 in execution\n");
pthread_exit(NULL);
}

int main()
{
int ret;
ret = pthread_create(&tid[0], NULL, thread_fn1, NULL);
if (!ret)
printf("Thread[%d] created Successfully\n",1);
else
printf("Thread[%d] not created\n",1);
ret = pthread_create(&tid[1], NULL, thread_fn2, NULL);
if (!ret)
printf("Thread[%d] created Successfully\n",2);
else
printf("Thread[%d] not created\n",2);


pthread_exit(NULL);

}