"dead list" that contains all stopped threads and then have a special cleanup thread that simply waits for an item to be added to the list. The cleanup thread calls pthread_join() to merge it with itself. Now your entire cleanup will be handled neatly and efficiently in a single thread.

mutexes are used to serialize access to *shared data*. Don't use them for non-shared data, and don't use them if your program's logic ensures that only one thread is accessing a particular data structure at a single time.

if you are using shared data, use mutexes for both reading and writing. Surround your read and write sections with pthread_mutex_lock() and pthread_mutex_unlock(), or use them any time a program's invariant is temporarily broken.

pthread_mutex_destroy() does not free the memory used to store the pthread_mutex_t. It's up to you to free() your own memory. Also remember that both pthread_mutex_init() and pthread_mutex_destroy() return zero on success.

pthread_mutex_lock() accepts a single pointer to a mutex to lock. If the mutex already happens to be locked, the caller will go to sleep. When the function returns, the caller will be woken up (obviously), and the caller will also now hold the lock. This call either returns zero on success.

You should always unlock a mutex that you've locked as soon as safely possible (to increase performance). And you should never unlock a mutex that you don't hold a lock for

When you call pthread_mutex_trylock() you'll attempt to lock the mutex. If the mutex is currently unlocked you'll get the lock, and this function will return zero. However, if the mutex is locked this call won't block. Rather, it will return a non-zero EBUSY error value.

pthread_cond_wait() simultaneously unlock the mutex (so that other threads can modify the linked list) and wait on the condition (so that pthread_cond_wait() will wake up when it is "signalled" by another thread). Now that the mutex is unlocked, other threads can access and modify the linked list, possibly adding items

pthread_cond_wait() call has not yet returned. Unlocking the mutex happens immediately, but waiting on the condition mycond is normally a blocking operation, meaning that our thread will go to sleep, consuming no CPU cycles until it is woken up.

This is exactly what we want to happen. Our thread is sleeping, waiting for a particular condition to become true, without performing any kind of busy polling that would waste CPU time. From our thread's perspective, it's simply waiting for the pthread_cond_wait() call to return.

Immediately after unlocking the mutex, thread 2 calls the function pthread_cond_broadcast(&mycond). By doing so, thread 2 will cause all threads waiting on the mycond condition variable to immediately wake up. This means that our first thread (which is in the middle of a pthread_cond_wait() call) will now wake up.

After thread 2 called pthread_cond_broadcast(&mymutex) you might think that thread 1's pthread_cond_wait() will immediately return. Not so! Instead, pthread_cond_wait() will perform one last operation: relock mymutex. Once pthread_cond_wait() has the lock, it will then return and allow thread 1 to continue execution.

I actually don't watch TV at all. If you asked me what my favorite TV show is, I couldn't tell you because I don't watch TV.

Dont give your money to the church. They should be giving their money to you.

I'm short-selling my house. I have more loans than I can sell the house for. The house will not go into foreclosure. It will be a short sale. I can't afford the house as I once could.

Yes, I would love to play one of the leads in one these movies and have all those challenges and deal with all those complications, but the business being what it is, there is a slot for me in these kinds of films, so I enjoy them, and I enjoy the people that I work with.

Fear of failure must never be a reason not to try something.

One cannot really argue with a mathematical theorem.

No human is limited.

When you come from a big family, you see that, growing up, you're learning how to share. Your sisters have got your back; you're not alone in this - 'We all support you!' Your family provides that; it gives you a sense of safety, and it's a very grounding feeling.

In a general way, anything that affects men is taken more seriously than anything that affects only women.

I hope everybody's had fun, because I've enjoyed my ride. I can tell you that. Now it's time to step aside and let some other young kid come in and win. Hopefully, they will, too.

A noble person is mindful and thankful for the favors he receives from others.

The data says that with the poor, a little money can buy a lot of happiness. If you're rich, a lot of money can buy you a little more happiness. But in both cases, money does it.

A first impression is a lasting impression. When were out talking to a prospect about their business it helps us to know what exactly it is that they do and how that affects their industry.

School is practice for the future, and practice makes perfect and nobody's perfect so why bother.

People wish to learn to swim and at the same time to keep one foot on the ground.

The rate of change is not going to slow down anytime soon. If anything, competition in most industries will probably speed up even more in the next few decades.

Darn the wheel of the world! Why must it continually turn over? Where is the reverse gear?

I know, if I am playing well, I can be as good as anyone, and I want to show people who write you off and forget about you.

Place your hands into soil to feel grounded. Wade in water to feel emotionally healed. Fill your lungs with fresh air to feel mentally clear. Raise your face to the heat of the sun and connect with that fire to feel your own immense power.

What most people know about me, they know through my music. This time, I've tried to open that door as wide as possible. These songs are a giant step closer to who I really am and what my music is all about. Hence the title.

Better to remain silent and be thought a fool than to speak and to remove all doubt.

The Project Angel Food Program's mission is to nourish the body and spirit of men, women and children affected by HIV/AIDS and other serious illness. The Project Angel Food Program delivers free and nutritious meals prepared with love. We act out of a sense of urgency because hunger and illness cannot wait.

The art editor in charge of the covers at the 'New Yorker' is Francoise Mouly. She's very familiar with the eccentricities and personalities of cartoonists, so working with her is very easy.

Our family suffers from a hereditary condition called, generally, mental illness. Specifically, multiple family members in successive generations have suffered from either bipolar disorder or schizophrenia.