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- LibraryTimer V1.1 Document
-
- LibraryTimer V1.1 Copyright © 1993, Jesper Skov.
- Released to the Public Domain on 03.10.93.
- Not for commercial use.
-
-
- Disclaimer
-
- The author cannot be held liable for the suitability or accuracy of this
- manual and the program it describes. Any damage directly or indirectly caused
- by the use or misuse of this manual or the program it describes is the sole
- responsibility of the user.
-
-
- Copyright and Distribution
-
- The programs and files in this distribution are freely distributable, but are
- also Copyright © Jesper Skov. They may be freely distributed as long as no
- more than a nominal fee is charged to cover time and copying costs. No
- commercial usage is permitted without written permission from the author.
- Everything in this distribution must be kept together, in original unmodified
- form. This section boils down to one word: FREEWARE!
-
-
- Introduction
-
- LibraryTimer was made in an attempt to figure out what libraryfunctions take
- most of the processortime in an application, and thus what functions should
- deserve more attention when time-optimizing the program.
-
-
- Gadget Description
-
-
- "Library Selector"
-
- LibraryList : List of libraries in memory.
-
- Update : Update the librarylist.
-
- Patch Library : Patch the functions in the selected library, and open the
- functiontable-window.
-
-
- "FunctionTable"
-
- FunctionList :
- Offset : The functionoffset in the library.
- Function : Name of the function if available (see below).
- Call : Number of calls made to the function.
- Time clicks : Time elapsed while executing the function (see below).
-
- Save : Save the functiontable to disk.
-
- Update : Update the functiontable.
-
- Clear : Clear the functiontable.
-
- Free Library : Remove the patches and return to the Library Selector.
-
-
-
- Different issues addressed in a very Ian Malcolmian way (chaotic, that is :-)
-
- The timing is performed by calling ReadEClock in the timer.device before and
- after the function is executed. The difference is then added to the
- function's time clicks, and the call-count is increased.
-
- Even though the patch is made in a manner so that re-entrant operation is
- supported, some problems remain since it is not possible to patch the
- function without changing the stackcontents. This cause some problems with
- the interrupt-returning functions in exec (private calls). This is why
- exec.library cannot be patched. Also any other function depending on a
- special stackframe (parsing via the stack) will fail to work.
-
- The LibraryTimer will show the name of the libraryfunctions if FD files are
- supported. This feature requires FD: assigned to the path of the FD-files.
-
- With the help of saving the functiontable, it should be possible to compare
- timings of different library/function versions, though only by hand.
- LibraryTimer V1.1 is not capable of doing any comparison. Remember that other
- tasks may (well, actually they do) cause differences in the timings, so if
- you are comparing two different versions of a function, make sure to have the
- system equally loaded (i.e. don't have an archiver working in the
- background.)
-
- LibraryTimer only runs on systems with kick v2.04+ and needs
- reqtools.library.
-
- Credits must go to Jes Sørensen for giving me the idea to make this silly
- little tool, Jan van den Baard for making the GadToolsBox and Nico François
- for making the fabulous ReqTools library.
-
- ____
- _I____I_
- ~ |_ _| ~
- |0 0|
- +------------------oOO-(__)-OOo------------------+
- | |
- | LibraryTimer V1.1 by Jesper Skov |
- | Copyright © 1993 Jesper Skov |
- | |
- | Mail: Jesper Skov |
- | Signalvej 9, 2tv |
- | DK-9000 Aalborg |
- | Denmark |
- | |
- | EMail: jsko93@kom.auc.dk |
- | |
- +------------------------------------------------+
-
-