Function write_signed

Lib/multiprocessing/forkserver.py:477–483

(fd, n)

    return SIGNED_STRUCT.unpack(data)[0]

def write_signed(fd, n):
    msg = SIGNED_STRUCT.pack(n)
    while msg:
        nbytes = os.write(fd, msg)
        if nbytes == 0:
            raise RuntimeError('should not get here')
        msg = msg[nbytes:]

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