SEM_FAILED

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
  1. auto SEM_FAILED;
  2. auto SEM_FAILED;
  3. auto SEM_FAILED;
    version(!linux && !OSX && FreeBSD)
    extern (C) const
    auto SEM_FAILED = cast(sem_t*)null;

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