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Index > Windows > [solved] How Suspend/Resume thread?

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nairam



Joined: 12 Feb 2015
Posts: 3
nairam 05 Sep 2016, 21:38
This not work. I mean set thread dor concrete cpu core
Sad

invoke CreateThread,0,1024,vlakno2,dword edi,4,dword [thread2]
invoke SetThreadIdealProcessor,dword [thread2],0
invoke ResumeThread,dword [thread2]

nairam


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Post 05 Sep 2016, 21:38
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AsmGuru62



Joined: 28 Jan 2004
Posts: 1501
Location: Toronto, Canada
AsmGuru62 06 Sep 2016, 02:12
Here:

https://msdn.microsoft.com/en-us/library/windows/desktop/ms686253(v=vs.85).aspx

1. The system schedules threads on their preferred processors whenever possible.

So, if you call the function - it is not guaranteed to run in the core you specify.

2. Did you call GetLastError() AFTER calling SetThreadIdealProcessor() - maybe it will give you some idea why system failed to schedule your thread for the specified core.
Post 06 Sep 2016, 02:12
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nairam



Joined: 12 Feb 2015
Posts: 3
nairam 06 Sep 2016, 12:20
invoke CreateThread,0,1024,vlakno2,dword edi,4,dword [thread2]
invoke SetThreadIdealProcessor,dword [thread2],0
invoke GetLastError
invoke ResumeThread,dword [thread2]

eax == ERROR_INVALID_HANDLE ;(6)

I try dword[threadID] also only threadID or NULL with id in EAX.
How I get global? threadID?
Post 06 Sep 2016, 12:20
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 19118
Location: In your JS exploiting you and your system
revolution 06 Sep 2016, 13:55
You need to use the thread handle, not the ID. The handle is returned in EAX.
Post 06 Sep 2016, 13:55
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nairam



Joined: 12 Feb 2015
Posts: 3
nairam 06 Sep 2016, 15:08
Yes, with handle in EAX work. Tnx.
Post 06 Sep 2016, 15:08
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