home *** CD-ROM | disk | FTP | other *** search
- Short: Fixes OpenWB() hangs,IPrefs and WB bugs
- Uploader: thor@math.tu-berlin.de
- Author: thor@math.tu-berlin.de
- Type: util/boot
- Version: 1.01
- Requires: WB 3.0 or 3.1 (V39 or V40).
-
- ____________________________________________________________________________
-
- Changes made:
- 1.01 fixes a race condition indroduced with the 1.00, hopefully...
-
- ___________________________________________________________________________
-
- This patch fixes two workbench related bugs:
-
- - first, adding AppIcons with the workbench.library while the workbench
- screen is closed crashes the system. This bug is fixed by opening the
- workbench first.
-
- - the OpenWorkBench() call hangs from time to time. Some fixes have been
- available from time to time, but none of them seem to attack the bug at
- its real roots.
-
- This IS NOT a task priority problem, but a real bug in IPrefs which locks
- two semaphores in the wrong order. For details, study the source code
- included.
-
-
- Another remark: This is supposed to be a simple patch, the programming
- techiques used here SHOULD NOT be used in a serious application. It uses
- some internal intuition details and self modifying code to install the
- patch, needed to fix the bug.PLEASE DON'T TRY THIS YOURSELF! The patch
- will disable itself if a newer (post V40) workbench.library is available,
- you should also remove it as soon as a newer version of IPrefs or SetPatch
- gets available! SetPatch 43.6 and IPrefs 40.7 ARE NOT GOOD ENOUGH to
- prevent this hang.
-
-
- January 1998
-
- Thomas Richter
-
- ____________________________________________________________________________
-
- The THOR-Software Licence
-
-
- This License applies to the computer programs known as "PatchWB".
- The "Program", below, refers to such program.
-
-
- The programs and files in this distribution are freely distributable
- under the restrictions stated below, but are also Copyright (c)
- Thomas Richter.
-
-
- Distribution of the Program by a commercial organization without written
- permission from the author to any third party is prohibited if any payment
- is made in connection with such distribution, whether directly
- (as in payment for a copy of the Program) or indirectly (as in payment
- for some service related to the Program, or payment for some product
- or service that includes a copy of the Program "without charge";
- these are only examples, and not an exhaustive enumeration of prohibited
- activities). However, the following methods of distribution involving
- payment shall not in and of themselves be a violation of this restriction:
-
-
- (i) Posting the Program on a public access information storage and
- retrieval service for which a fee is received for retrieving information
- (such as an on-line service), provided that the fee is not
- content-dependent (i.e., the fee would be the same for retrieving the same
- volume of information consisting of random data).
-
-
-
- (ii) Distributing the Program on a CD-ROM, provided that the files
- containing the Program are reproduced entirely and verbatim on such
- CD-ROM, and provided further that all information on such CD-ROM be
- redistributable for non-commercial purposes without charge.
-
-
-
- Everything in this distribution must be kept together, in original
- and unmodified form.
-
-
-
-
- Limitations.
-
- THE PROGRAM IS PROVIDED TO YOU "AS IS," WITHOUT WARRANTY. THERE IS NO
- WARRANTY FOR THE PROGRAM, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. THE ENTIRE
- RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD
- THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
- SERVICING, REPAIR OR CORRECTION.
-
-
-
- IF YOU DO NOT ACCEPT THIS LICENCE, YOU MUST DELETE ALL FILES CONTAINED IN
- THIS ARCHIVE.
-
- _____________________________________________________________________________