RtlTryEnterCriticalSection - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
#ifndef _NTRTL_H

_When_(return != 0, _Acquires_exclusive_lock_(*CriticalSection))
NTSYSAPI
LOGICAL
NTAPI
RtlTryEnterCriticalSection(
    _Inout_ PRTL_CRITICAL_SECTION CriticalSection
    );

#endif

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NtDoc

Attempts to enter the specified critical section object without blocking.

Related Win32 API

TryEnterCriticalSection maps directly to this function.

See also

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