void pmem_add(phys_addr_t start, size_t length) {
pmem_region_t* reg;
recheck:
reg = pmem_region_head;
while(reg) {
if(start >= reg->start && start < (reg->start + reg->length)) {
/* start within this region */
if((start + length) <= (reg->start + reg->length)) {
/* end withing this section, so completely with us already */
return;
}
length -= (reg->start + reg->length) - start;
start = reg->start + reg->length;
goto recheck;
}
if((start + length) > reg->start &&
(start + length) < (reg->start + reg->length))
{
/* end within this region */
if(start >= reg->start) {
/* start too, so no more left over. */
return;
}
length = (reg->start - start);
goto recheck;
}
reg = reg->next;
}
/* we have a checked region here, with correct start and end.
* now allocate the required management structures, etc. */
pmem_region_t* region = (pmem_region_t*)kheap_alloc(sizeof(pmem_region_t));
bitmap_t* bmap = bmap_new(PMEM_PAGES(length));
if(!region || !bmap) {
error("not enough memory to allocate memory management structures!\n");
if(region) kheap_free(region);
if(bmap) kheap_free(bmap);
return;
}
region->start = start;
region->length = length;
region->bmap = bmap;
region->next = NULL;
pmem_region_tail->next = region;
pmem_region_tail = region;
}
thread_t* thr_delete(thread_t* thr) {
if(thr->context) {
kheap_free(thr->context);
}
if(thr->stack) {
stka_free(thr->parent->stka, thr->stack);
}
if(thr) {
kheap_free(thr);
}
return NULL;
}