3 ms·

C actually had better support (than C++) for double-checked locking (which is a lockless algorithm) up until relatively recently https://preshing.com/20130930/d

• lalaland1125 6y ago
  Huh? Both C and C++ only added support for atomics and double-checked locking in the same year: 2011 (C11 for C and C++11 for C++). How did C support double checked locking before C++ when the standards were released contemporaneously?
  • deleted 6y ago
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• jcranmer 6y ago
  False. The C standard had no consideration for thread semantics prior to C11, and C11's memory model is literally and explicitly derived from C++11's memory model (which itself is adapted from Java 5's memory model). All of the discussions about how the memory model semantics for C11 and C++11 actually work take place entirely within the C++ standards committee, as is true for most new C language features these days (with the C committee largely designing merely the spellings of the new features).