From O’Reilly: One marked difference between the System V and POSIX semaphore implementations is that in System V you can control how much the semaphore count can be increased or decreased; whereas in POSIX, the semaphore count is increased and decreased by 1. POSIX semaphores do not allow manipulation of semaphore permissions, whereas System V … Read more
Performance As has been suggested in previous answers, use of the inline keyword can make code faster by inlining function calls, often at the expense of increased executables. “Inlining function calls” just means substituting the call to the target function with the actual code of the function, after filling in the arguments accordingly. However, modern … Read more
Did you really mean #include everything? That would give you only a single module and let the optimizer see the entire program at once. Actually, Microsoft’s Visual C++ does exactly this when you use the /GL (Whole Program Optimization) switch, it doesn’t actually compile anything until the linker runs and has access to all code. … Read more