Equation Solution High Performance by Design |
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Functions
nlp$createlock nlp$deletelock nlp$lock nlp$unlock
SYNTAX
call nlp$createlock(lockid) call nlp$deletelock(lockid) call nlp$lock(lockid) call nlp$unlock(lockid) PURPOSE A lock is created by the function nlp$createlock. When the lock is no longer necessary, the lock can be deleted by the function nlp$deletelock. Lock is for soft cores to enter critical section. A critical section is accessed by the lock holder. Before entering a critical section, soft core needs to call the function nlp$lock, and becomes the lock holder after returning from the call. If the lock is held by other soft core, a call to nlp$lock blocks the caller until the lock holder releases the lock. Only one soft core can hold the lock at a time. The function nlp$unlock releases the lock. For example, call nlp$lock(lockid) !! critical section that is accessed !! by one soft core at a time call nlp$unlock(lockid) |
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