root/include/asm-alpha/posix_types.h

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INCLUDED FROM


DEFINITIONS

This source file includes following definitions.
  1. __FD_SET
  2. __FD_CLR
  3. __FD_ISSET
  4. __FD_ZERO

   1 #ifndef _ALPHA_POSIX_TYPES_H
   2 #define _ALPHA_POSIX_TYPES_H
   3 
   4 /*
   5  * This file is generally used by user-level software, so you need to
   6  * be a little careful about namespace pollution etc.  Also, we cannot
   7  * assume GCC is being used.
   8  */
   9 
  10 typedef unsigned int    __kernel_dev_t;
  11 typedef unsigned int    __kernel_ino_t;
  12 typedef unsigned int    __kernel_mode_t;
  13 typedef unsigned int    __kernel_nlink_t;
  14 typedef long            __kernel_off_t;
  15 typedef int             __kernel_pid_t;
  16 typedef unsigned int    __kernel_uid_t;
  17 typedef unsigned int    __kernel_gid_t;
  18 typedef unsigned long   __kernel_size_t;
  19 typedef long            __kernel_ssize_t;
  20 typedef long            __kernel_ptrdiff_t;
  21 typedef long            __kernel_time_t;
  22 typedef long            __kernel_clock_t;
  23 typedef int             __kernel_daddr_t;
  24 typedef char *          __kernel_caddr_t;
  25 
  26 #ifdef __GNUC__
  27 typedef long long       __kernel_loff_t;
  28 #endif
  29 
  30 typedef struct {
  31         int     val[2];
  32 } __kernel_fsid_t;
  33 
  34 #ifndef __GNUC__
  35 
  36 #define __FD_SET(d, set)        ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
  37 #define __FD_CLR(d, set)        ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
  38 #define __FD_ISSET(d, set)      ((set)->fds_bits[__FDELT(d)] & __FDMASK(d))
  39 #define __FD_ZERO(set)  \
  40   ((void) memset ((__ptr_t) (set), 0, sizeof (__kernel_fd_set)))
  41 
  42 #else /* __GNUC__ */
  43 
  44 /* With GNU C, use inline functions instead so args are evaluated only once: */
  45 
  46 #undef __FD_SET
  47 static __inline__ void __FD_SET(unsigned long fd, __kernel_fd_set *fdsetp)
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  48 {
  49         unsigned long _tmp = fd / __NFDBITS;
  50         unsigned long _rem = fd % __NFDBITS;
  51         fdsetp->fds_bits[_tmp] |= (1UL<<_rem);
  52 }
  53 
  54 #undef __FD_CLR
  55 static __inline__ void __FD_CLR(unsigned long fd, __kernel_fd_set *fdsetp)
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  56 {
  57         unsigned long _tmp = fd / __NFDBITS;
  58         unsigned long _rem = fd % __NFDBITS;
  59         fdsetp->fds_bits[_tmp] &= ~(1UL<<_rem);
  60 }
  61 
  62 #undef __FD_ISSET
  63 static __inline__ int __FD_ISSET(unsigned long fd, __kernel_fd_set *p)
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  64 { 
  65         unsigned long _tmp = fd / __NFDBITS;
  66         unsigned long _rem = fd % __NFDBITS;
  67         return (p->fds_bits[_tmp] & (1UL<<_rem)) != 0;
  68 }
  69 
  70 /*
  71  * This will unroll the loop for the normal constant case (8 ints,
  72  * for a 256-bit fd_set)
  73  */
  74 #undef __FD_ZERO
  75 static __inline__ void __FD_ZERO(__kernel_fd_set *p)
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  76 {
  77         unsigned int *tmp = p->fds_bits;
  78         int i;
  79 
  80         if (__builtin_constant_p(__FDSET_INTS)) {
  81                 switch (__FDSET_INTS) {
  82                         case 8:
  83                                 tmp[0] = 0; tmp[1] = 0; tmp[2] = 0; tmp[3] = 0;
  84                                 tmp[4] = 0; tmp[5] = 0; tmp[6] = 0; tmp[7] = 0;
  85                                 return;
  86                 }
  87         }
  88         i = __FDSET_INTS;
  89         while (i) {
  90                 i--;
  91                 *tmp = 0;
  92                 tmp++;
  93         }
  94 }
  95 
  96 #endif /* __GNUC__ */
  97 
  98 #endif /* _ALPHA_POSIX_TYPES_H */

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