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.

"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.

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 love 'Latina'! You guys have always been so supportive of me and my career. Now I have my family, and it's just awesome.

A lot of gay men stay in the closet because they are interested in fashion.

I was completely with the reality TV boom for a while. I really liked a lot of the reality TV, and the one that lost me was the ballroom dancing one they do, 'Dancing with the Stars.' That was the one where I watched it and I was perplexed. I thought it was really boring.

Being alone and actually sitting with our own thoughts can lead to such growth and realizations that are rare in our everyday busy lives.

There is a sense in which we have - like, I go in to teach a class; I may be somewhat different than I would be talking to you, although it's related because it's public. I'm very different with my roommate or my lover or my cats. But I don't know if that means you're acting, really, if you're being truthful.

I know what my teammates think about me, I know what my coaches think about me. I don't concern myself with what anyone thinks outside of that.

If you think about it, episodic filmmaking has not been something that people have really done.

Not working is bad for you. It is my drug, it gives me a high; most performers will tell you that. And there is nothing like the high that an audience gives you.

I just love bossy women. I could be around them all day. To me, bossy is not a pejorative term at all. It means somebody's passionate and engaged and ambitious and doesn't mind leading.

I'm actually pretty smart when you get to know me.

Lou Tyrrell has created a theatre that is a safe haven for playwrights, a birthing center for new American writing. Arts Garage has created a vital, enthusiastic audience for theatre, music, painting and sculpture in Delray Beach.

There is no philosophy which is not founded upon knowledge of the phenomena, but to get any profit from this knowledge it is absolutely necessary to be a mathematician.

If you take a band like Nirvana, their biggest hits are structurally the same as even a hair metal band's biggest hits. The structure's not different - the attitude was different. Except it really wasn't. It seemed a little more human.

'Don't Look Back' is my first YA contemporary mystery/thriller. It's been described as 'Black Swan' meets 'Pretty Little Liars'.

Being in the latter stages of life means the morning is unkind to the reflection. It takes a few hours for the creases to fall out. By about 4 P.M., I look quite nice.

The possibility of truth has become a delusion to those who made their own disguise the truth.

I have two younger sisters and I'm such an advocate of owning who you are as a person. Don't be ashamed or intimidated. Never feel like you are not amazing.

Words ought to be a little wild, for they are the assaults of thoughts on the unthinking.

With 'If I Stay,' I want you to feel that the whole story is being told from a larger, spiritual point of view. So the beginning is very theatrical.

Early college high schools in North Carolina and across the country show us that challenge - not remediation - is an approach to education that works.

In school, you learn that there are only seven kinds of stories. There's man versus nature, man versus man, man versus himself, blah blah blah. So it doesn't matter what they're called. It's this: do you have a new story that fits into one of those things.

Drugs are a waste of time. They destroy your memory and your self-respect and everything that goes along with with your self-esteem. They're no good at all.

How incessant and great are the ills with which a prolonged old age is replete.

Foucault's genius is to go down to the little dramas, dress them in facts hardly anyone else has noticed, and turn these stage settings into clues to a hitherto un-thought series of confrontations out of which, he contends, the orderly structure of society is composed.