---
name: "RtlSetCriticalSectionSpinCount"
section: "3w"
platform: "linux"
package: "libwine-dev"
version: "1.4.1-4"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/RtlSetCriticalSectionSpinCount"
---

# RtlSetCriticalSectionSpinCount(3w)

## NAME

**RtlSetCriticalSectionSpinCount** (NTDLL.@)

## SYNOPSIS

ULONG RtlSetCriticalSectionSpinCount\
  (\
   RTL\_CRITICAL\_SECTION\* *crit*,\
   ULONG                 *spincount*\
  )

## DESCRIPTION

Sets the spin count of a critical section.

## PARAMS

*crit* **\[In/Out\]**  Critical section.

*spincount* **\[In\]**  Spin count for *crit*.

## RETURNS

The previous spin count.

## NOTES

If the system is not **SMP**, *spincount* is ignored and set to **0.**

## SEE

RtlInitializeCriticalSectionEx(), RtlInitializeCriticalSection(), **[RtlInitializeCriticalSectionAndSpinCount(3w)](/RtlInitializeCriticalSectionAndSpinCount/3w.md)**, RtlDeleteCriticalSection(), **[RtlEnterCriticalSection(3w)](/RtlEnterCriticalSection/3w.md)**, RtlLeaveCriticalSection(), **[RtlTryEnterCriticalSection(3w)](/RtlTryEnterCriticalSection/3w.md)**

## IMPLEMENTATION

Declared in **"winternl.h"**.

Implemented in **"dlls/ntdll/critsection.c"**.

Debug channel **"ntdll"**.