mirror of https://github.com/python/cpython.git
78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
#ifndef Py_MYSELECT_H
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#define Py_MYSELECT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***********************************************************
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Copyright (c) 2000, BeOpen.com.
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Copyright (c) 1995-2000, Corporation for National Research Initiatives.
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Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
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All rights reserved.
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See the file "Misc/COPYRIGHT" for information on usage and
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redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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******************************************************************/
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/***************************************
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THIS FILE IS OBSOLETE
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USE "pyport.h" INSTEAD
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***************************************/
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/* Include file for users of select() */
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/* NB caller must include <sys/types.h> */
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#ifdef HAVE_SYS_SELECT_H
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#ifdef SYS_SELECT_WITH_SYS_TIME
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#include "mytime.h"
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#else /* !SYS_SELECT_WITH_SYS_TIME */
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#include <time.h>
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#endif /* !SYS_SELECT_WITH_SYS_TIME */
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#include <sys/select.h>
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#else /* !HAVE_SYS_SELECT_H */
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#ifdef USE_GUSI1
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/* If we don't have sys/select the definition may be in unistd.h */
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#include <GUSI.h>
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#endif
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#include "mytime.h"
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#endif /* !HAVE_SYS_SELECT_H */
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/* If the fd manipulation macros aren't defined,
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here is a set that should do the job */
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#ifndef FD_SETSIZE
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#define FD_SETSIZE 256
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#endif
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#ifndef FD_SET
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typedef long fd_mask;
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#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
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#ifndef howmany
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#define howmany(x, y) (((x)+((y)-1))/(y))
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#endif /* howmany */
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typedef struct fd_set {
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fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
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} fd_set;
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#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
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#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
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#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
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#define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p)))
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#endif /* FD_SET */
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_MYSELECT_H */
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