Re: Windows Non-Paged Pool Memory Allocation

Are you (attempting to) writing a device driver in Perl?

If so, you're probably into a world of grief

If not, why do you want to use non-paged memory from an application?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

Comment on Re: Windows Non-Paged Pool Memory Allocation

Replies are listed 'Best First'.
Re^2: Windows Non-Paged Pool Memory Allocation by Anonymous Monk on Oct 31, 2006 at 13:09 UTC
This is meant to test the allocation. We have a few kernal leaks and want to detect the problem via an SNMP trap. I need to test that the trap will fire. So I need to run a program that will eat up a ton of non-paged windows memory to force the trap. I would rather not purchase a C compiler to run the test ... so I want to see if a perl module has already incorporated this OS specific function. Make sense?	[reply]
Re^3: Windows Non-Paged Pool Memory Allocation by BrowserUk (Patriarch) on Oct 31, 2006 at 13:18 UTC
Okay, but you are going to be out of luck. According to the docs, both those apis need to be called from code running at an IRQ level: `Callers of ExAllocatePoolWithQuotaTag must be running at IRQL <= APC_L +EVEL. Callers of AllocateCommonBuffer must be running at IRQL = PASSIVE_LEVE +L.` [download] If you knew (or search) to locate the dll they are exported from, the you could attempt to call them using Win32::API, but unless you know a way to cause your Perl script to be called by the kernel as an IRQ handler, it isn't going to to work. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal? "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l]
Re^4: Windows Non-Paged Pool Memory Allocation by Anonymous Monk on Oct 31, 2006 at 14:29 UTC
Actually, it isn't that difficult. For example the code here will consume from the NP Pool until it faults for ($i=1; $i<=7000; $i++) { for ($k=1; $k<=1000; $k++) { $hash->{$k}->{"a $i b $j"}="$j fish $i"; } print "$j $i $k\n"; } I just want to see if there is a way to do it directly instead of indirectly	[reply]
Re^5: Windows Non-Paged Pool Memory Allocation by BrowserUk (Patriarch) on Oct 31, 2006 at 15:05 UTC
Re: Windows Non-Paged Pool Memory Allocation by flake (Initiate) on Oct 31, 2006 at 15:08 UTC
Umm, you can download many C or C++ compilers gratis. Even MS its self makes a free version of Visual C++ 2005 (which will compile C code also) though obviously you would not be getting source code there	[reply]
Re^2: Windows Non-Paged Pool Memory Allocation by RMGir (Prior) on Oct 31, 2006 at 18:06 UTC
More specifically, MSFT makes the Windows Driver Kit available. Since the description claims it's a full build environment, I'm assuming that means it has the C compiler you'd need to write your deliberately anti-social driver. I haven't downloaded it to check, though :) Mike	[reply]