[beagleboard] Optimization of pthread_mutex_lock in the application code

[Niresh]

Hi,

I am using beagle Bone Black with debian image. Could any please suggest 
how to optimize the application code using pthread_mutex_lock. Let me 
describe the solution I am looking at.

For example, I have two thread sharing a global shared memory variable as 
below

thr_id1 = pthread_create ( &p_thread1, NULL, (void *)execution_task1, NULL 
);
thr_id2 = pthread_create ( &p_thread2, NULL, (void *)execution_task2, NULL 
);  

void execution_task1()
{
    
     for(int i = 0;i < 100;i++) 
     {
          pthread_mutex_lock(&lock);  
                shmPtr->status = 1;
pthread_mutex_unlock(&lock);
sleep(1/2);
     }
}

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