Re: [PATCH] vkd3d: Don't allow concurrent writes to descriptors.

[Conor McCarthy]

On Thu, Sep 12, 2019 at 5:18 AM Derek Lesho  wrote:
> - for (unsigned int i = 0; i < desc->NumDescriptors; i++)
> - {
> -
>    struct d3d12_desc *cur_desc = (struct d3d12_desc *)
>
> (object->descriptors + (i * descriptor_size));
> -
>    pthread_spinlock_t *lock =
>
> vkd3d_malloc(sizeof(pthread_spinlock_t));
> -
> -
>    pthread_spin_init(lock, PTHREAD_PROCESS_PRIVATE);
> -
>    cur_desc->lock = lock;
> - }

On Linux, pthread_spinlock_t is just a single int (not sure about the Mac
equivalent but probably similar). It's more efficient to declare
cur_desc->lock as a pthread_spinlock_t rather than a pointer to one in
allocated memory.