5 ms·

FWIW, there is POSIX-specified functionality (swapcontext and friends) for changing the user thread context: http://pubs.opengroup.org/onlinepubs/009695399/func

• asdfasgasdgasdg 7y ago
  It's very slow though, at least if you believe the Boost docs. They have various context-controlling types. One of them is called ucontext_t, and falls back to ucontext. Then there's fcontext_t, which is basically a more advanced version of this article. Boost's docs claim it is much faster than ucontext.