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

"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.

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.

Success is a journey not a destination. The doing is usually more important than the outcome. Not everyone can be Number 1.

All you need to know and observe in yourself is this: Whenever you feel superior or inferior to anyone, that’s the ego in you.

If we just focus on stats, we're gonna eventually not have them.

We're in a world that celebrates things: success, beauty, money. And I reckon that's really about 4 per cent of the world. The rest of us are just getting on with it.

I came to town thinking that everybody had the same idea of what country music was that I did.

Some stresses are unavoidable - it's just part of life. One of the things I do to avoid stress is not work with people that I don't really like or drive me crazy.

I never gave up on country music because I knew what I was doing was not that bad.

I go through money like a bloke with three arms.

I'm doing a program with NAFME for music and education in schools, and for a week, we will be getting in a bus and traveling across the United States. We're starting at Disney World and ending at the Grand OIe Opry. We will be performing at different schools, and I wrote a song for the program called 'Always Sing.'

If you're asking me, would I have voted for Mitt Romney, the answer is absolutely not. Emphatically not. I cannot envision a world in which I would have voted for Mitt Romney unless I sustained a massive concussion.

When you’re at the end of your rope, tie a knot and hold on.

Many scientists think that philosophy has no place, so for me it's a sad time because the role of reflection, contemplation, meditation, self inquiry, insight, intuition, imagination, creativity, free will, is in a way not given any importance, which is the domain of philosophers.

I love playing video games. I love listening to music. Just surfing the web. Facebook, Twitter, keeping in touch with people from home.

We, after a certain age, after college, are so consumed about what we want to achieve in life, and we fiercely are ambitious and we go after that, but sometimes we tend to take all our loved and dear ones for granted.

Do you have any idea what Ali meant to black people? He was the leader of a nation, the leader of Black America. As a young black, at times I was ashamed of my color; I was ashamed of my hair. And Ali made me proud.

Solidarity is not discovered by reflection but created.

It used to be that we imagined that our mobile phones would be for us to talk to each other. Now, our mobile phones are there to talk to us.

To emphasize the afterlife is to deny life. To concentrate on heaven is to create hell.

I definitely have a fear of spiders. Don't we want to embrace our fears?

The little energy you obtained from your breakfast can ignite your willingness to kick start. Dont overlook the little energy you have now by fixing eyes on a supposed magical influence farther away

As an actor, I don't really think you find yourself. I mean, once you find yourself, I think it becomes boring and you become set in your ways. I think, as an actor I think it's not a bad thing but more of a gift. It's something you're always doing as an actor. You're adjusting constantly.

I throw as hard as I can when I think I have to throw as hard as I can.

The truest state of humanity is that you're living for other people.

If you just kind of live a regular life and make good 'Hollywood' money, you have a certain freedom.