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27 lines
663 B
C
27 lines
663 B
C
#pragma once
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struct timeval;
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// 64 bits
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typedef long int __fd_mask;
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#define __NFDBITS (8 * (int) sizeof(__fd_mask))
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// TODO: Guess this should be the same as the maximum
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// per-process filedes count
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#define __FD_SETSIZE 64
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typedef struct fd_set {
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__fd_mask fds_bits[__FD_SETSIZE / __NFDBITS];
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} fd_set;
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#define FD_SET(fd, fds) \
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(fds)->fds_bits[(fd) / __NFDBITS] |= (1ULL << ((fd) % __NFDBITS))
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#define FD_ISSET(fd, fds) \
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(!!((fds)->fds_bits[(fd) / __NFDBITS] & (1ULL << ((fd) % __NFDBITS))))
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#define FD_ZERO(fds) \
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for (int __i = 0; __i < (__FD_SETSIZE / __NFDBITS); ++__i) \
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(fds)->fds_bits[__i] = 0
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