Artifact 9a99bdfa5c6027e2eaa8020a4e79547923ce60ad133e1e8780ee925b777b9c37:
- File
src/OFStreamObserver_kqueue.m
— part of check-in
[e5157b2ba2]
at
2012-12-27 11:20:34
on branch trunk
— OFStreamObserver_kqueue: Return NO on error.
Using an assertion there was not a good idea. (user: js, size: 3997) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012 * Jonathan Schleifer <js@webkeks.org> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #include <unistd.h> #include <errno.h> #include <assert.h> #include <sys/types.h> #include <sys/event.h> #include <sys/time.h> #import "OFStreamObserver_kqueue.h" #import "OFDataArray.h" #import "OFInitializationFailedException.h" #import "OFOutOfMemoryException.h" #import "OFOutOfRangeException.h" #import "autorelease.h" #import "macros.h" #define EVENTLIST_SIZE 64 @implementation OFStreamObserver_kqueue - init { self = [super init]; @try { if ((kernelQueue = kqueue()) == -1) @throw [OFInitializationFailedException exceptionWithClass: [self class]]; changeList = [[OFDataArray alloc] initWithItemSize: sizeof(struct kevent)]; [self OF_addFileDescriptorForReading: cancelFD[0]]; } @catch (id e) { [self release]; @throw e; } return self; } - (void)dealloc { close(kernelQueue); [changeList release]; [super dealloc]; } - (void)OF_addFileDescriptorForReading: (int)fd { struct kevent event; if ([changeList count] >= INT_MAX) @throw [OFOutOfRangeException exceptionWithClass: [self class]]; EV_SET(&event, fd, EVFILT_READ, EV_ADD, 0, 0, 0); [changeList addItem: &event]; } - (void)OF_addFileDescriptorForWriting: (int)fd { struct kevent event; if ([changeList count] >= INT_MAX) @throw [OFOutOfRangeException exceptionWithClass: [self class]]; EV_SET(&event, fd, EVFILT_WRITE, EV_ADD, 0, 0, 0); [changeList addItem: &event]; } - (void)OF_removeFileDescriptorForReading: (int)fd { struct kevent event; EV_SET(&event, fd, EVFILT_READ, EV_DELETE, 0, 0, 0); [changeList addItem: &event]; } - (void)OF_removeFileDescriptorForWriting: (int)fd { struct kevent event; EV_SET(&event, fd, EVFILT_WRITE, EV_DELETE, 0, 0, 0); [changeList addItem: &event]; } - (BOOL)observeWithTimeout: (double)timeout { void *pool = objc_autoreleasePoolPush(); struct timespec timespec; struct kevent eventList[EVENTLIST_SIZE]; int i, events, realEvents = 0; timespec.tv_sec = (time_t)timeout; timespec.tv_nsec = (long)((timeout - timespec.tv_sec) * 1000000000); [self OF_processQueue]; if ([self OF_processCache]) { objc_autoreleasePoolPop(pool); return YES; } objc_autoreleasePoolPop(pool); events = kevent(kernelQueue, [changeList items], (int)[changeList count], eventList, EVENTLIST_SIZE, (timeout == -1 ? NULL : ×pec)); if (events < 0) return NO; [changeList removeAllItems]; if (events == 0) return NO; for (i = 0; i < events; i++) { if (eventList[i].ident == cancelFD[0]) { char buffer; OF_ENSURE(read(cancelFD[0], &buffer, 1) > 0); continue; } realEvents++; pool = objc_autoreleasePoolPush(); if (eventList[i].flags & EV_ERROR) { if ([delegate respondsToSelector: @selector(streamDidReceiveException:)]) [delegate streamDidReceiveException: FDToStream[eventList[i].ident]]; objc_autoreleasePoolPop(pool); continue; } switch (eventList[i].filter) { case EVFILT_READ: if ([delegate respondsToSelector: @selector(streamIsReadyForReading:)]) [delegate streamIsReadyForReading: FDToStream[eventList[i].ident]]; break; case EVFILT_WRITE: if ([delegate respondsToSelector: @selector(streamIsReadyForWriting:)]) [delegate streamIsReadyForWriting: FDToStream[eventList[i].ident]]; break; default: assert(0); } objc_autoreleasePoolPop(pool); } if (realEvents == 0) return NO; return YES; } @end