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7a80adeb9b
Most of these changes involve simply removing direct manipulation of any runtime structures and replacing them with runtime function calls. For example class->name becomes class_getName(class) and so on.
libobjc2, like the Apple runtime, the NeXT runtime, and every version of the Objective-C spec, calls the class pointer in id isa. A few files now have #define class_pointer isa at the top. This line replaces class_pointer in the old GNU libobjc headers with isa so either class_pointer or isa can be used for accessing the class of an object. Note: object_getClass() should be used in most cases because, in some future version of the runtime, this will skip things like lock classes and other hidden classes (e.g. KVO classes).
All of the old forwarding stuff has been removed. Most of this stuff followed convoluted code paths that ended with an exception. A few simply broke in exciting ways. Hopefully no one has used them for the last ten years or so, but we can bring them back with some #ifndef stuff if they're really needed by anyone.
There is currently a bug in configure, which prevents dladdr() from being detected, so you need to manually tweak config.h to build - I have not fixed the fall-back code in objc-load.m to work with libobjc2, I just added a new version that uses the loader's functionality directly.
Although -base now builds, it builds with a lot of warnings. <string.h> is missing from a lot of files, so memcpy() and strlen() generate implicit function declaration warnings.
Additionally, libobjc2 does still provide the sel_{get,register}_*() functions, but they're wrappers around the newer API ones. These are deprecated and are not exposed in the headers. Although they work, we should be replacing them with the libobjc2 versions as soon as possible.
This incorporates a patch by Eric.
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@31265 72102866-910b-0410-8b05-ffd578937521
88 lines
2.8 KiB
Objective-C
88 lines
2.8 KiB
Objective-C
/* Interface internal use by Distributed Objects components
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Copyright (C) 1997 Free Software Foundation, Inc.
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Written by: Richard Frith-Macdonald <richard@brainstorm.co.uk>
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Date: August 1997
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This file is part of the GNUstep Base Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02111 USA.
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*/
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#ifndef __DistributedObjects_h
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#define __DistributedObjects_h
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/*
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* For <strong>INTERNAL</strong> use by the GNUstep base library.
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* This file should not be installed. The only reason why it is
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* located here, is to allow target specific headers (like mframe.h),
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* which are located according to dis/enabled-flattened,
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* may include this file via standard "GNUstepBase/DistributedObjects.h"
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* and won't require an extra -I flag.
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*
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* Classes should implement [-classForPortCoder] to return the class
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* that should be sent over the wire.
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*
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* Classes should implement [-replacementObjectForPortCoder:] to encode
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* objects.
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* The default action is to send a proxy.
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*/
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#import <Foundation/NSConnection.h>
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#import <Foundation/NSDistantObject.h>
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#import <Foundation/NSPortCoder.h>
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#import <Foundation/NSPort.h>
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/*
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* Distributed Objects identifiers
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* These define the type of messages sent by the D.O. system.
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*/
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enum {
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METHOD_REQUEST = 0,
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METHOD_REPLY,
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ROOTPROXY_REQUEST,
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ROOTPROXY_REPLY,
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CONNECTION_SHUTDOWN,
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METHODTYPE_REQUEST,
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METHODTYPE_REPLY,
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PROXY_RELEASE,
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PROXY_RETAIN,
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RETAIN_REPLY
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};
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/*
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* Category containing the methods by which the public interface to
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* NSConnection must be extended in order to allow it's use by
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* by NSDistantObject et al for implementation of Distributed objects.
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*/
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@interface NSConnection (Internal)
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- (NSDistantObject*) includesLocalTarget: (unsigned)target;
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- (NSDistantObject*) localForObject: (id)object;
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- (NSDistantObject*) locateLocalTarget: (unsigned)target;
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- (NSDistantObject*) proxyForTarget: (unsigned)target;
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- (void) retainTarget: (unsigned)target;
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- (void) forwardInvocation: (NSInvocation *)inv
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forProxy: (NSDistantObject*)object;
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- (const char *) typeForSelector: (SEL)sel remoteTarget: (unsigned)target;
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@end
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@interface NSPort (Internal)
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- (id) conversation: (NSPort*)receivePort;
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@end
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#endif /* __DistributedObjects_h */
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