| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * epoll_create() / epoll_ctl() / epoll_wait() for uClibc |
| 4 | * |
| 5 | * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| 6 | * |
| 7 | * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| 8 | */ |
| 9 | |
| 10 | #include <sys/syscall.h> |
| 11 | #include <sys/epoll.h> |
| 12 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 13 | # include <sysdep-cancel.h> |
| 14 | #else |
| 15 | # define SINGLE_THREAD_P 1 |
| 16 | #endif |
| 17 | |
| 18 | /* |
| 19 | * epoll_create() |
| 20 | */ |
| 21 | #ifdef __NR_epoll_create |
| 22 | _syscall1(int, epoll_create, int, size) |
| 23 | #endif |
| 24 | |
| 25 | /* |
| 26 | * epoll_create1() |
| 27 | */ |
| 28 | #ifdef __NR_epoll_create1 |
| 29 | _syscall1(int, epoll_create1, int, flags) |
| 30 | #endif |
| 31 | |
| 32 | /* |
| 33 | * epoll_ctl() |
| 34 | */ |
| 35 | #ifdef __NR_epoll_ctl |
| 36 | _syscall4(int,epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event *, event) |
| 37 | #endif |
| 38 | |
| 39 | /* |
| 40 | * epoll_wait() |
| 41 | */ |
| 42 | #ifdef __NR_epoll_wait |
| 43 | extern __typeof(epoll_wait) __libc_epoll_wait; |
| 44 | int __libc_epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout) |
| 45 | { |
| 46 | if (SINGLE_THREAD_P) |
| 47 | return INLINE_SYSCALL(epoll_wait, 4, epfd, events, maxevents, timeout); |
| 48 | # ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 49 | else { |
| 50 | int oldtype = LIBC_CANCEL_ASYNC (); |
| 51 | int result = INLINE_SYSCALL(epoll_wait, 4, epfd, events, maxevents, timeout); |
| 52 | LIBC_CANCEL_RESET (oldtype); |
| 53 | return result; |
| 54 | } |
| 55 | # endif |
| 56 | } |
| 57 | weak_alias(__libc_epoll_wait, epoll_wait) |
| 58 | #endif |
| 59 | |
| 60 | /* |
| 61 | * epoll_pwait() |
| 62 | */ |
| 63 | #ifdef __NR_epoll_pwait |
| 64 | # include <signal.h> |
| 65 | |
| 66 | extern __typeof(epoll_pwait) __libc_epoll_pwait; |
| 67 | int __libc_epoll_pwait(int epfd, struct epoll_event *events, int maxevents, |
| 68 | int timeout, const sigset_t *set) |
| 69 | { |
| 70 | int nsig = _NSIG / 8; |
| 71 | if (SINGLE_THREAD_P) |
| 72 | return INLINE_SYSCALL(epoll_pwait, 6, epfd, events, maxevents, timeout, set, nsig); |
| 73 | # ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 74 | else { |
| 75 | int oldtype = LIBC_CANCEL_ASYNC (); |
| 76 | int result = INLINE_SYSCALL(epoll_pwait, 6, epfd, events, maxevents, timeout, set, nsig); |
| 77 | LIBC_CANCEL_RESET (oldtype); |
| 78 | return result; |
| 79 | } |
| 80 | # endif |
| 81 | } |
| 82 | weak_alias(__libc_epoll_pwait, epoll_pwait) |
| 83 | #endif |