"What I have found in programming books, including those by the late W. Richard Stevens (which I turn to most often) is usually a good start, but never the whole story. But since this is not a general programming text, I will focus on a single issue in detail. This post will cover using semaphores.
"First, a little background on locks, in case you have never used them. In *nix, process locks are implemented with the semaphore system calls. Since I use child processes that share memory, I have to implement semaphores. Threads use pthread_mutex calls, which do essentially what these functions do, and then some."
