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Home/ Questions/Q 6689733
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Editorial Team
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Editorial Team
Asked: May 26, 20262026-05-26T05:33:15+00:00 2026-05-26T05:33:15+00:00

I have this c++ code (VS 2008): LONGLONG res = InterlockedIncrement64(&m_longlong); running along it,

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I have this c++ code (VS 2008):

LONGLONG res = InterlockedIncrement64(&m_longlong);

running along it, I would like to be able to read from the same variable

LONGLONG res = InterlockedWHAT?64(&m_longlong)

Since this is a 64-bit variable, a simple read is not considered threadsafe, yet I cannot find the correct InterlockedXXX.

How should I read this variable?

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  1. Editorial Team
    Editorial Team
    2026-05-26T05:33:15+00:00Added an answer on May 26, 2026 at 5:33 am
    LONGLONG res = InterlockedCompareExchange64(&m_longlong, 0, 0);
    
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