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base: support whole addressable range in allocator 

Issue #3111
This commit is contained in:
Alexander Boettcher 2019-04-09 13:02:01 +02:00 committed by Christian Helmuth
parent 8840ca96a9
commit 8950de5a89
1 changed files with 8 additions and 2 deletions
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10
repos/base/src/lib/base/allocator_avl.cc
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@ -146,8 +146,14 @@ void Allocator_avl_base::_destroy_block(Block *b)
void Allocator_avl_base::_cut_from_block(Block *b, addr_t addr, size_t size,
Block *dst1, Block *dst2)
{
size_t padding = addr > b->addr() ? addr - b->addr() : 0;
size_t remaining = b->size() > (size + padding) ? b->size() - size - padding : 0;
size_t const padding = addr > b->addr() ? addr - b->addr() : 0;
size_t const b_size = b->size() > padding ? b->size() - padding : 0;
size_t remaining = b_size > size ? b_size - size : 0;
/* case that a block contains the whole addressable range */
if (!b->addr() && !b->size())
remaining = b->size() - size - padding;
addr_t orig_addr = b->addr();
_destroy_block(b);