| 1 | #ifndef __wasilibc___fd_set_h |
| 2 | #define __wasilibc___fd_set_h |
| 3 | |
| 4 | #include <__typedef_fd_set.h> |
| 5 | |
| 6 | #ifdef __cplusplus |
| 7 | extern "C" { |
| 8 | #endif |
| 9 | |
| 10 | static __inline void FD_CLR(int __fd, fd_set *__set) { |
| 11 | size_t __n = __set->__nfds; |
| 12 | for (int *__p = __set->__fds, *__e = __p + __n; |
| 13 | __p < __e; ++__p) |
| 14 | { |
| 15 | if (*__p == __fd) { |
| 16 | *__p = __e[-1]; |
| 17 | __set->__nfds = __n - 1; |
| 18 | return; |
| 19 | } |
| 20 | } |
| 21 | } |
| 22 | |
| 23 | static __inline |
| 24 | #ifdef __cplusplus |
| 25 | bool |
| 26 | #else |
| 27 | _Bool |
| 28 | #endif |
| 29 | FD_ISSET(int __fd, const fd_set *__set) |
| 30 | { |
| 31 | size_t __n = __set->__nfds; |
| 32 | for (const int *__p = __set->__fds, *__e = __p + __n; |
| 33 | __p < __e; ++__p) |
| 34 | { |
| 35 | if (*__p == __fd) { |
| 36 | return 1; |
| 37 | } |
| 38 | } |
| 39 | return 0; |
| 40 | } |
| 41 | |
| 42 | static __inline void FD_SET(int __fd, fd_set *__set) { |
| 43 | size_t __n = __set->__nfds; |
| 44 | for (const int *__p = __set->__fds, *__e = __p + __n; |
| 45 | __p < __e; ++__p) |
| 46 | { |
| 47 | if (*__p == __fd) { |
| 48 | return; |
| 49 | } |
| 50 | } |
| 51 | __set->__nfds = __n + 1; |
| 52 | __set->__fds[__n] = __fd; |
| 53 | } |
| 54 | |
| 55 | static __inline void FD_ZERO(fd_set *__set) { |
| 56 | __set->__nfds = 0; |
| 57 | } |
| 58 | |
| 59 | static __inline void FD_COPY(const fd_set *__restrict __from, |
| 60 | fd_set *__restrict __to) { |
| 61 | size_t __n = __from->__nfds; |
| 62 | __to->__nfds = __n; |
| 63 | __builtin_memcpy(__to->__fds, __from->__fds, __n * sizeof(int)); |
| 64 | } |
| 65 | |
| 66 | #define FD_CLR(fd, set) (FD_CLR((fd), (set))) |
| 67 | #define FD_ISSET(fd, set) (FD_ISSET((fd), (set))) |
| 68 | #define FD_SET(fd, set) (FD_SET((fd), (set))) |
| 69 | #define FD_ZERO(set) (FD_ZERO((set))) |
| 70 | #define FD_COPY(from, to) (FD_COPY((from), (to))) |
| 71 | |
| 72 | #ifdef __cplusplus |
| 73 | } |
| 74 | #endif |
| 75 | |
| 76 | #endif |