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.

"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.

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.

The Four Seasons was making me popular in Britain, but EMI America had no interest in making that happen in the States, so I just had a classical career there.

Politics is applesauce.

Each of us is born with a box of matches inside us but we cant strike them all by ourselves

Preparing foods from other Jewish communities is broadening. It's interesting to sample the foods of other Jewish communities and see what they developed.

Children always turn to the light.

I think if you look at exactly where you are, you can't really focus without looking back and forward at the same time.

A lot of people say, 'Wow, you're a single father of twin boys, that's crazy!' Two toddlers can get hectic, but I wouldn't change it for anything. Every day they teach me different things. The love is there. When you have a two-year-old saying every other hour, 'Papi, te amo. Papi, I love you,' it can't get better.

Before passing different laws for different people, I'd relinquish myself unto you as your slave.

All the world has been converted and Washington is the modem Mecca.

I grew up in an environment in Birmingham that was really multicultural, with black kids, Irish kids, Indian kids.

First, unreliability is not the sole preserve of fictional narrators. Second, the pleasure of patting oneself on the back for seizing on instances of unreliability and ignorance is, as the late Frank Kermode may or may not have pointed out, considerable.

On stage, I need to be seen from the back seats. So, I dress more colorful and vibrant.

Sustainability goes across everything I do with Adidas and everything I do with my own house, so the Olympic kit is no exception. It is incredibly environmental in the way that it is manufactured. For example, there's no leather; it's free from PVC. There's lots of woven materials, which means a lot less waste.

We live in a world where everyone thinks they do the right thing, so they are entitled to do the wrong thing. So ends can justify the means.

One of my favorite shots was on these, like, lava rocks - but moss was growing on it, and I was lying on it, and it was really green, and the picture was really pretty.

Programming is usually taught by examples.

Beauty is not in the face beauty is a light in the heart.

The fact is, as actors, everything we do, bad or good, is a contribution. To me, it is a positive thing to give people as wide a range of human behavior with some sense of understanding of that behavior or some clue to it.

I've learned that I don't need much sleep, and that I am able to really stand up for the things that I think that are important and that there are a lot of people out there who agree with me.

Men tend to fall in love when they feel like they are cherished or revered as the 'man' in the relationship.

A large social-media presence is important because it's one of the last ways to conduct cost-effective marketing. Everything else involves buying eyeballs and ears. Social media enables a small business to earn eyeballs and ears.

A little chocolate a day keeps the doctor at bay

I've seen many of my contemporaries become superstars, and the way fame and fortune starts to really affect the way they treat other people, and I think it's ugly.

Model the qualities that you want your children to show to each other.