C++ (Cpp) xnheap_usable_mem Examples

Example #1

File: heap.c Project: BhargavKola/xenomai-forge

int rt_heap_inquire(RT_HEAP *heap, RT_HEAP_INFO *info)
{
	int err = 0;
	spl_t s;

	xnlock_get_irqsave(&nklock, s);

	heap = xeno_h2obj_validate(heap, XENO_HEAP_MAGIC, RT_HEAP);

	if (!heap) {
		err = xeno_handle_error(heap, XENO_HEAP_MAGIC, RT_HEAP);
		goto unlock_and_exit;
	}

	strcpy(info->name, heap->name);
	info->nwaiters = xnsynch_nsleepers(&heap->synch_base);
	info->heapsize = heap->csize;
	info->usablemem = xnheap_usable_mem(&heap->heap_base);
	info->usedmem = xnheap_used_mem(&heap->heap_base);
	info->mode = heap->mode;
#ifdef __XENO_SIM__
	info->phys_addr = 0;
#else
	info->phys_addr = (heap->mode & H_SINGLE) ? virt_to_phys(heap->sba):0;
#endif

      unlock_and_exit:

	xnlock_put_irqrestore(&nklock, s);

	return err;
}

Example #2

static int __heap_read_proc(char *page,
			    char **start,
			    off_t off, int count, int *eof, void *data)
{
	RT_HEAP *heap = (RT_HEAP *)data;
	char *p = page;
	int len;
	spl_t s;

	p += sprintf(p, "type=%s:size=%lu:used=%lu:numaps=%d\n",
		     (heap->mode & H_SHARED) == H_SHARED ? "shared" :
		     (heap->mode & H_MAPPABLE) ? "mappable" : "kernel",
		     xnheap_usable_mem(&heap->heap_base), xnheap_used_mem(&heap->heap_base),
		     atomic_read(&heap->heap_base.archdep.numaps));

	xnlock_get_irqsave(&nklock, s);

	if (xnsynch_nsleepers(&heap->synch_base) > 0) {
		xnpholder_t *holder;

		/* Pended heap -- dump waiters. */

		holder = getheadpq(xnsynch_wait_queue(&heap->synch_base));

		while (holder) {
			xnthread_t *sleeper = link2thread(holder, plink);
			RT_TASK *task = thread2rtask(sleeper);
			size_t size = task->wait_args.heap.size;
			p += sprintf(p, "+%s (size=%zd)\n",
				     xnthread_name(sleeper), size);
			holder =
			    nextpq(xnsynch_wait_queue(&heap->synch_base),
				   holder);
		}
	}

	xnlock_put_irqrestore(&nklock, s);

	len = (p - page) - off;
	if (len <= off + count)
		*eof = 1;
	*start = page + off;
	if (len > count)
		len = count;
	if (len < 0)
		len = 0;

	return len;
}

Example #3

File: heap.c Project: BhargavKola/xenomai-forge

static int vfile_rewind(struct xnvfile_snapshot_iterator *it)
{
	struct vfile_priv *priv = xnvfile_iterator_priv(it);
	RT_HEAP *heap = xnvfile_priv(it->vfile);

	heap = xeno_h2obj_validate(heap, XENO_HEAP_MAGIC, RT_HEAP);
	if (heap == NULL)
		return -EIDRM;

	priv->curr = getheadpq(xnsynch_wait_queue(&heap->synch_base));
	priv->mode = heap->mode;
	priv->usable_mem = xnheap_usable_mem(&heap->heap_base);
	priv->used_mem = xnheap_used_mem(&heap->heap_base);
	priv->nrmaps = heap->heap_base.archdep.numaps;

	return xnsynch_nsleepers(&heap->synch_base);
}