ObjFW  Artifact [81451deb50]

Artifact 81451deb5053a7bd448bf7dfe0ca9f15733cbf883263d06563cea7d794e6ff1e:

• File src/exceptions/OFException.h — 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: 3823) [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.
 */

#import "OFObject.h"

@class OFString;
@class OFArray;
@class OFMutableArray;

#define OF_BACKTRACE_SIZE 32

#if defined(_WIN32) && defined(OF_HAVE_SOCKETS)
# ifndef EADDRINUSE
#  define EADDRINUSE WSAEADDRINUSE
# endif
# ifndef EADDRNOTAVAIL
#  define EADDRNOTAVAIL WSAEADDRNOTAVAIL
# endif
# ifndef EAFNOSUPPORT
#  define EAFNOSUPPORT WSAEAFNOSUPPORT
# endif
# ifndef EALREADY
#  define EALREADY WSAEALREADY
# endif
# ifndef ECONNABORTED
#  define ECONNABORTED WSAECONNABORTED
# endif
# ifndef ECONNREFUSED
#  define ECONNREFUSED WSAECONNREFUSED
# endif
# ifndef ECONNRESET
#  define ECONNRESET WSAECONNRESET
# endif
# ifndef EDESTADDRREQ
#  define EDESTADDRREQ WSAEDESTADDRREQ
# endif
# ifndef EDQUOT
#  define EDQUOT WSAEDQUOT
# endif
# ifndef EHOSTDOWN
#  define EHOSTDOWN WSAEHOSTDOWN
# endif
# ifndef EHOSTUNREACH
#  define EHOSTUNREACH WSAEHOSTUNREACH
# endif
# ifndef EINPROGRESS
#  define EINPROGRESS WSAEINPROGRESS
# endif
# ifndef EISCONN
#  define EISCONN WSAEISCONN
# endif
# ifndef ELOOP
#  define ELOOP WSAELOOP
# endif
# ifndef EMSGSIZE
#  define EMSGSIZE WSAEMSGSIZE
# endif
# ifndef ENETDOWN
#  define ENETDOWN WSAENETDOWN
# endif
# ifndef ENETRESET
#  define ENETRESET WSAENETRESET
# endif
# ifndef ENETUNREACH
#  define ENETUNREACH WSAENETUNREACH
# endif
# ifndef ENOBUFS
#  define ENOBUFS WSAENOBUFS
# endif
# ifndef ENOPROTOOPT
#  define ENOPROTOOPT WSAENOPROTOOPT
# endif
# ifndef ENOTCONN
#  define ENOTCONN WSAENOTCONN
# endif
# ifndef ENOTSOCK
#  define ENOTSOCK WSAENOTSOCK
# endif
# ifndef EOPNOTSUPP
#  define EOPNOTSUPP WSAEOPNOTSUPP
# endif
# ifndef EPFNOSUPPORT
#  define EPFNOSUPPORT WSAEPFNOSUPPORT
# endif
# ifndef EPROCLIM
#  define EPROCLIM WSAEPROCLIM
# endif
# ifndef EPROTONOSUPPORT
#  define EPROTONOSUPPORT WSAEPROTONOSUPPORT
# endif
# ifndef EPROTOTYPE
#  define EPROTOTYPE WSAEPROTOTYPE
# endif
# ifndef EREMOTE
#  define EREMOTE WSAEREMOTE
# endif
# ifndef ESHUTDOWN
#  define ESHUTDOWN WSAESHUTDOWN
# endif
# ifndef ESOCKTNOSUPPORT
#  define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
# endif
# ifndef ESTALE
#  define ESTALE WSAESTALE
# endif
# ifndef ETIMEDOUT
#  define ETIMEDOUT WSAETIMEDOUT
# endif
# ifndef ETOOMANYREFS
#  define ETOOMANYREFS WSAETOOMANYREFS
# endif
# ifndef EUSERS
#  define EUSERS WSAEUSERS
# endif
# ifndef EWOULDBLOCK
#  define EWOULDBLOCK WSAEWOULDBLOCK
# endif
extern int of_wsaerr_to_errno(int);
#endif

/*!
 * @class OFException OFException.h ObjFW/OFException.h
 *
 * @brief The base class for all exceptions in ObjFW
 *
 * The OFException class is the base class for all exceptions in ObjFW, except
 * the OFAllocFailedException.
 */
@interface OFException: OFObject
{
	void *_backtrace[OF_BACKTRACE_SIZE];
}

/*!
 * @brief Creates a new, autoreleased exception.
 *
 * @return A new, autoreleased exception
 */
+ (instancetype)exception;

/*!
 * @brief Returns a description of the exception.
 *
 * @return A description of the exception
 */
- (OFString*)description;

/*!
 * @brief Returns a backtrace of when the exception was created or nil if no
 *	  backtrace is available.
 *
 * @return A backtrace of when the exception was created
 */
- (OFArray*)backtrace;
@end

#ifdef __cplusplus
extern "C" {
#endif
extern OFString* of_strerror(int errNo);
#ifdef __cplusplus
}
#endif