DosFreeSpinLock: Difference between revisions
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==Syntax== | ==Syntax== | ||
APIRET DosFreeSpinLock ([[HSPINLOCK]] Handle) | |||
APIRET DosFreeSpinLock ([[HSPINLOCK]] Handle) | |||
==Parameters== | ==Parameters== | ||
; Handle : the spinlock handle returned from DosCreateSpinLock | ; Handle : the spinlock handle returned from DosCreateSpinLock |
Revision as of 13:59, 24 August 2017
Free a subsystem spinlock
Syntax
APIRET DosFreeSpinLock (HSPINLOCK Handle)
Parameters
- Handle
- the spinlock handle returned from DosCreateSpinLock
Return Code
- NO_ERROR
- ERROR_INVALID_HANDLE
Remarks
DosFreeSpinLock frees a spinlock created by a call to DosCreateSpinLock.
Example Code
#define INCL_DOSSPINLOCK #include <os2.h> HSPINLOCK hspin; thread1() { //acquire spinlock DosAcquireSpinLock(hspin); //do something that only takes a few microseconds ... //release spinlock DosReleaseSpinLock(hspin); } void main() { //create spinlock DosCreateSpinLock(&hspin); //do something ... //destroy spinlock DosFreeSpinLock(hspin); }