Rev 6099 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6099 | serge | 1 | /* select.h |
| 2 | Copyright 1998, 1999, 2000, 2001, 2005, 2009 Red Hat, Inc. |
||
| 3 | |||
| 4 | Written by Geoffrey Noer |
||
| 5 | |||
| 6 | This file is part of Cygwin. |
||
| 7 | |||
| 8 | This software is a copyrighted work licensed under the terms of the |
||
| 9 | Cygwin license. Please consult the file "CYGWIN_LICENSE" for |
||
| 10 | details. */ |
||
| 11 | |||
| 12 | #ifndef _SYS_SELECT_H |
||
| 13 | #define _SYS_SELECT_H |
||
| 14 | |||
| 15 | /* We don't define fd_set and friends if we are compiling POSIX |
||
| 16 | source, or if we have included (or may include as indicated |
||
| 17 | by __USE_W32_SOCKETS) the W32api winsock[2].h header which |
||
| 18 | defines Windows versions of them. Note that a program which |
||
| 19 | includes the W32api winsock[2].h header must know what it is doing; |
||
| 20 | it must not call the Cygwin select function. |
||
| 21 | */ |
||
| 6536 | serge | 22 | # if !(defined (_WINSOCK_H) || defined (_WINSOCKAPI_) || defined (__USE_W32_SOCKETS)) |
| 6099 | serge | 23 | |
| 24 | #include |
||
| 25 | #include |
||
| 26 | #include |
||
| 27 | #include |
||
| 28 | |||
| 29 | #if !defined(_SIGSET_T_DECLARED) |
||
| 30 | #define _SIGSET_T_DECLARED |
||
| 31 | typedef __sigset_t sigset_t; |
||
| 32 | #endif |
||
| 33 | |||
| 34 | # define _SYS_TYPES_FD_SET |
||
| 35 | /* |
||
| 36 | * Select uses bit masks of file descriptors in longs. |
||
| 37 | * These macros manipulate such bit fields (the filesystem macros use chars). |
||
| 38 | * FD_SETSIZE may be defined by the user, but the default here |
||
| 39 | * should be >= NOFILE (param.h). |
||
| 40 | */ |
||
| 41 | # ifndef FD_SETSIZE |
||
| 42 | # define FD_SETSIZE 64 |
||
| 43 | # endif |
||
| 44 | |||
| 45 | typedef unsigned long fd_mask; |
||
| 46 | # define NFDBITS (sizeof (fd_mask) * 8) /* bits per mask */ |
||
| 47 | # ifndef _howmany |
||
| 48 | # define _howmany(x,y) (((x)+((y)-1))/(y)) |
||
| 49 | # endif |
||
| 50 | |||
| 51 | /* We use a macro for fd_set so that including Sockets.h afterwards |
||
| 52 | can work. */ |
||
| 53 | typedef struct _types_fd_set { |
||
| 54 | fd_mask fds_bits[_howmany(FD_SETSIZE, NFDBITS)]; |
||
| 55 | } _types_fd_set; |
||
| 56 | |||
| 57 | #define fd_set _types_fd_set |
||
| 58 | |||
| 59 | # define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1L << ((n) % NFDBITS))) |
||
| 60 | # define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1L << ((n) % NFDBITS))) |
||
| 61 | # define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1L << ((n) % NFDBITS))) |
||
| 62 | # define FD_ZERO(p) (__extension__ (void)({ \ |
||
| 63 | size_t __i; \ |
||
| 64 | char *__tmp = (char *)p; \ |
||
| 65 | for (__i = 0; __i < sizeof (*(p)); ++__i) \ |
||
| 66 | *__tmp++ = 0; \ |
||
| 67 | })) |
||
| 68 | |||
| 69 | #if !defined (__INSIDE_CYGWIN_NET__) |
||
| 70 | |||
| 71 | __BEGIN_DECLS |
||
| 72 | |||
| 73 | int select __P ((int __n, fd_set *__readfds, fd_set *__writefds, |
||
| 74 | fd_set *__exceptfds, struct timeval *__timeout)); |
||
| 6536 | serge | 75 | #if __POSIX_VISIBLE >= 200112 |
| 6099 | serge | 76 | int pselect __P ((int __n, fd_set *__readfds, fd_set *__writefds, |
| 77 | fd_set *__exceptfds, const struct timespec *__timeout, |
||
| 78 | const sigset_t *__set)); |
||
| 6536 | serge | 79 | #endif |
| 6099 | serge | 80 | |
| 81 | __END_DECLS |
||
| 82 | |||
| 6536 | serge | 83 | #endif /* !__INSIDE_CYGWIN_NET__ */ |
| 6099 | serge | 84 | |
| 6536 | serge | 85 | #endif /* !(_WINSOCK_H || _WINSOCKAPI_ || __USE_W32_SOCKETS) */ |
| 6099 | serge | 86 | |
| 87 | #endif /* sys/select.h */ |