Jeremy Soller
24 lines
776 B
C
24 lines
776 B
C
#ifndef _BITS_SYS_SELECT_H
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#define _BITS_SYS_SELECT_H
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// from musl license MIT {
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#define FD_SETSIZE 1024
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typedef unsigned long fd_mask;
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typedef struct {
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unsigned long fds_bits[FD_SETSIZE / 8 / sizeof(long)];
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} fd_set;
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#define FD_ZERO(s) do { int __i; unsigned long *__b=(s)->fds_bits; for(__i=sizeof (fd_set)/sizeof (long); __i; __i--) *__b++=0; } while(0)
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#define FD_SET(d, s) ((s)->fds_bits[(d)/(8*sizeof(long))] |= (1UL<<((d)%(8*sizeof(long)))))
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#define FD_CLR(d, s) ((s)->fds_bits[(d)/(8*sizeof(long))] &= ~(1UL<<((d)%(8*sizeof(long)))))
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#define FD_ISSET(d, s) !!((s)->fds_bits[(d)/(8*sizeof(long))] & (1UL<<((d)%(8*sizeof(long)))))
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define NFDBITS (8*(int)sizeof(long))
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#endif
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// } from musl license MIT
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#endif
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