DosFreeSpinLock
Free a spinlock for multiprocessor serialization.
Syntax
APIRET APIENTRY DosFreeSpinLock (HSPINLOCK Handle)
Parameters
- Handle (HSPINLOCK)
- A handle to a spinlock. This handle was returned on the DosCreateSpinLock api call.
Return Code
- NO_ERROR
- ERROR_INVALID_HANDLE
Remarks
DosFreeSpinLock is passed the handle which was returned by 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);
}