| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include<errno.h> |
| #include<sys/epoll.h> |
| |
| #include"private/SigSetConverter.h" |
| #include"private/bionic_fdtrack.h" |
| |
| extern"C"int __epoll_create1(int flags); |
| extern"C"int __epoll_pwait(int, epoll_event*,int,int,constsigset64_t*,size_t); |
| extern"C"int __epoll_pwait2(int, epoll_event*,int,const __kernel_timespec*,constsigset64_t*, |
| size_t); |
| |
| int epoll_create(int size){ |
| if(size<=0){ |
| errno= EINVAL; |
| return-1; |
| } |
| return FDTRACK_CREATE(__epoll_create1(0)); |
| } |
| |
| int epoll_create1(int flags){ |
| return FDTRACK_CREATE(__epoll_create1(flags)); |
| } |
| |
| int epoll_pwait(int fd, epoll_event* events,int max_events,int timeout,constsigset_t* ss){ |
| SigSetConverterset{ss}; |
| return epoll_pwait64(fd, events, max_events, timeout,set.ptr); |
| } |
| |
| int epoll_pwait64(int fd, epoll_event* events,int max_events,int timeout,constsigset64_t* ss){ |
| return __epoll_pwait(fd, events, max_events, timeout, ss,sizeof(*ss)); |
| } |
| |
| int epoll_pwait2(int fd, epoll_event* events,int max_events,const timespec* timeout, |
| constsigset_t* ss){ |
| SigSetConverterset{ss}; |
| return epoll_pwait2_64(fd, events, max_events, timeout,set.ptr); |
| } |
| |
| int epoll_pwait2_64(int fd, epoll_event* events,int max_events,const timespec* timeout, |
| constsigset64_t* ss){ |
| // epoll_pwait2() is our first syscall that assumes a 64-bit time_t even for |
| // 32-bit processes, so for ILP32 we need to convert. |
| // TODO: factor this out into a TimeSpecConverter as/when we get more syscalls like this. |
| #if __LP64__ |
| const __kernel_timespec* kts_ptr=reinterpret_cast<const __kernel_timespec*>(timeout); |
| #else |
| __kernel_timespec kts; |
| const __kernel_timespec* kts_ptr=nullptr; |
| if(timeout){ |
| kts.tv_sec= timeout->tv_sec; |
| kts.tv_nsec= timeout->tv_nsec; |
| kts_ptr=&kts; |
| } |
| #endif |
| return __epoll_pwait2(fd, events, max_events, kts_ptr, ss,sizeof(*ss)); |
| } |
| |
| int epoll_wait(int fd,struct epoll_event* events,int max_events,int timeout){ |
| return epoll_pwait64(fd, events, max_events, timeout,nullptr); |
| } |
