Method TSemaphorePipe

library/cpp/neh/pipequeue.h:50–55

    class TSemaphorePipe {
    public:
        inline TSemaphorePipe() {
            TPipeHandle::Pipe(S_[0], S_[1]);

            SetNonBlock(S_[0]);
            SetNonBlock(S_[1]);
        }

        inline size_t Acquire(TCont* c) {
            char ch;