----boundary-LibPST-iamunique-506828135_-_-
Content-type: text/plain
I'm using the following BlackBox 1.5 procedure to execute a MS-DOS program:
PROCEDURE RunNEC;
VAR
r : WinApi.BOOL;
startupinfo : WinApi.STARTUPINFOA;
processinfo : WinApi.PROCESS_INFORMATION;
BEGIN
startupinfo.cb := SIZE (WinApi.STARTUPINFOA);
startupinfo.lpReserved := NIL;
startupinfo.lpDesktop := NIL;
startupinfo.lpTitle := NIL;
startupinfo.dwX := 0;
startupinfo.dwY := 0;
startupinfo.dwXSize := 0;
startupinfo.dwYSize := 0;
startupinfo.dwXCountChars := 0;
startupinfo.dwYCountChars := 0;
startupinfo.dwFillAttribute := 0;
startupinfo.dwFlags := {};
startupinfo.wShowWindow := 0;
startupinfo.cbReserved2 := 0;
startupinfo.lpReserved2 := NIL;
startupinfo.hStdInput := 0;
startupinfo.hStdOutput := 0;
startupinfo.hStdError := 0;
r := WinApi.CreateProcess ("c:\windows\command.com",
"c:\nec2d\bb\nec.bat",
NIL, NIL, 0,
WinApi.CREATE_NEW_CONSOLE,
0,
"c:\nec2d\bb",
startupinfo,
processinfo);
r := WinApi.WaitForSingleObject (processinfo.hThread, WinApi.INFINITE);
r := WinApi.CloseHandle (processinfo.hThread);
r := WinApi.CloseHandle (processinfo.hProcess);
NECcounter := NECcounter + 1
END RunNEC;
This procedure is used in a loop to execute a MS-DOS program
repeatedly with different arguments supplied.
The program needs to be executed many thousands of times
in order to arrive at the optimal solution.
However, it's impossible to perform more than ~200 repeated executions.
Here are the facts:
1. Corect return values are obtained from all four WinApi procedure calls.
2. While executing 135 calls, Windows "user resources" drop from 68 % to 37 %.
"GDI resources" remain unchanged.
3. When the BlackBox command terminates (with BlackBox still running),
"user resources" return to the initial value within 1..2 seconds.
4. Windows 98 Second Edition is used.
Resource Meter (Accessories, System Tools) provides information about
resource levels.
5. The same procedure was used to call the same MS-DOS program few years ago,
with some tens of thousands unattended calls performed overnight.
I think I used BlackBox 1.3.2 then, possibly with Windows 98 original
(not Second Edition).
Perhaps there's somebody who understands Windows and BlackBox better than I do.
Any help would be greatly appreciated.
Sinisa
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Received on Tue Oct 24 2006 - 09:52:43 UTC