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.

"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_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.

She gets away with it. Everybody co-signs her bad behavior. It's like we all are co-dependent on Lindsay Lohan. When are we going to stand up to her?

I think New York is a good place to write in general because it's a grid. It's organized. You know where you are on the map. That centers you, and your imagination is perhaps freer to roam.

I don't have any style.

Society is better off without certain people.

Its fascinating how life works.

There were a lot of little triggers that made me realize that life is now; life is happening while we're preoccupied with stupidities. Of course, growing. Of course, becoming a mother and understanding life from another perspective.

I owe a lot to my time on 'House of Cards' because, up until I booked that show, I had been working consistently for 12 years, but I wasn't working on anything that mattered in the way 'House of Cards' did to its audience, to casting directors, to directors and producers. The show hit this sweet spot.

The role of the federal government should be neutral toward culture just as it is toward religion.

People such as Hunter S. Thompson and the Beats were a huge influence on me, not just in what they were saying, but how they said it.

We can create new food substances.

Don't be afraid to take liberties with this music. Try and put some of yourself into it.

Until we stop harming all other living beings, we are still savages.

I spend about half my time in mobile and half my time on enterprise.

Deep doubts deep wisdom small doubts little wisdom.

I won it, at least five million times. Men who were stronger, bigger and faster than I was could have done it, but they never picked up a pole, and never made the feeble effort to pick their legs off the ground and get over the bar.

Just as predatory animals follow a similar general design and behave in similar ways, so organizations, especially those in competition with one another, must follow certain design principles if they are to succeed and prevail.

Edgar Degas's famous sculpture, 'Little Dancer Aged Fourteen,' served as my muse for 'The Painted Girls.' I came upon a television documentary on the work, and as someone who held the sculpture in high esteem and who largely considered ballet to be the high-minded pursuit of privileged young girls, I was struck by what I would learn.

There are environmental threats to health; there are internal threats to health - genetic conditions, viral threats, diseases like cancer and Parkinson's. And then there are societal and global ones, like poverty and lack of nutrition. And unknown viral threats - everything from a new kind of influenza to hemorrhagic fever.

I like food too much to go on some crazy diet. French fries are my favorite downfall.

I'm a writer. I don't support any war. That's my principle.

The man who can put himself in the place of other men, who can understand the workings of their minds, need never worry about what the future has in store for him.

Don't tell lies, ever. No matter what - not even little white lies.

I think being deaf gave me an increased sense of sight.

I'm not even very good at most video games.