Changeset 8264 for trunk/tools

Timestamp:

Apr 14, 2002, 1:05:22 AM (23 years ago)

Author:

bird

Message:

Added some mail notes.

File:

• trunk/tools/profilerfix/Readme.txt (modified) (1 diff)

trunk/tools/profilerfix/Readme.txt

@@ -1 +1 @@
 
+
+
+Some mail explaination which I'll fix later.
+------------------------------------------------
+
+It used to work with Warp 4 fixpack 9 (which was the one we used at work).
+There are two big issues:
+ - WPS crash or PM corruption when starting icsperf due to
+   exhausted stack. probably caused by changes in PM or WPS.
+   This I have made working patches for.
+ - The debugee traps before any tracedata is collected. This is
+   because icsperf tries to load a bunch of DLL before it startes
+   the process. This is of course done by Dos(32)LoadModule which
+   will do some thunking in Doscall1.dll and go to a 16-bit
+   kernel worker. But doscall1.dll isn't initiated and hence the
+   thunking failes after some high memory thunking changes.
+   This is harder to fix. Current fix calls the doscall1.dll init
+   proc before loading calling DosLoadModule. This kind of works.
+
+Then there are some unstability in the debug reader (DDE4XRDR.DLL) or icsperfs use of this. But that is fixable. Currently I can install a conditional breakpoint in the kerneldebugger to get around this.
+
+But when tracking odin based apps, some pointer gets schrewed up during trace collection in the debugee and this traps both icsperf and the debuggee. It might have to do with high memory address. I don't currently know.