Artifact 545888cf6fed1a117b1e0b61c9bcafbf0f8d7f38eb677edf81b1d7f4f717bec0:
- File
src/exceptions/OFReadOrWriteFailedException.m
— part of check-in
[62e2de30b9]
at
2015-02-16 08:39:17
on branch trunk
— Explicitly pass errno to exceptions
The old behaviour where the exception would access errno directly on
creation of the exception was very fragile. The two main problems with
it were that sometimes it would pick up an errno even though none had
been set and in other cases that when the exception was created errno
had already been overridden.This also greatly increases errno handling on Win32, especially in
conjunction with sockets. It can still be improved further, though. (user: js, size: 2200) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 * 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" #import "OFReadOrWriteFailedException.h" #import "OFString.h" @implementation OFReadOrWriteFailedException + (instancetype)exceptionWithObject: (id)object requestedLength: (size_t)requestedLength { return [[[self alloc] initWithObject: object requestedLength: requestedLength] autorelease]; } + (instancetype)exceptionWithObject: (id)object requestedLength: (size_t)requestedLength errNo: (int)errNo { return [[[self alloc] initWithObject: object requestedLength: requestedLength errNo: errNo] autorelease]; } - init { OF_INVALID_INIT_METHOD } - initWithObject: (id)object requestedLength: (size_t)requestedLength { self = [super init]; _object = [object retain]; _requestedLength = requestedLength; return self; } - initWithObject: (id)object requestedLength: (size_t)requestedLength errNo: (int)errNo { self = [super init]; _object = [object retain]; _requestedLength = requestedLength; _errNo = errNo; return self; } - (void)dealloc { [_object release]; [super dealloc]; } - (OFString*)description { if (_errNo != 0) return [OFString stringWithFormat: @"Failed to read or write %zu bytes from / to an object of " @"type %@: %@", _requestedLength, [_object class], of_strerror(_errNo)]; else return [OFString stringWithFormat: @"Failed to read or write %zu bytes from / to an object of " @"type %@!", _requestedLength, [_object class]]; } - (id)object { OF_GETTER(_object, true) } - (size_t)requestedLength { return _requestedLength; } - (int)errNo { return _errNo; } @end