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Re: Semantics of copying mutex/rwlock
On 2010年6月16日 11:27:48 -0400 (EDT)
der Mouse <mouse%Rodents-Montreal.ORG@localhost> wrote:
> > What I do is call pthread_mutex_destroy() on every old lock,
> > allocate a new array, call pthread_mutex_init() on all locks in new
> > array and then free old array. I guess there is no way around it.
>
> There is, actually - you could use an array of pthread_mutex_t *, with
> the mutexes themselves allocated separately and individually. It
> means more allocations and complicated allocation code, it might be
> worth it.
Yeah it's a good idea, this is what I do with hash table buckets, it's
just a pointer to linked list. I definitely need to run a benchmark to
see if malloc()/*init() for each new lock is faster.
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