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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2007-09-12 20:11:33 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2007-09-12 20:11:33 +0000 |
| commit | 493e405cac79d7d0f810f051394c616011ce9ffb (patch) | |
| tree | ea1e338132aeb5b91e785340efb375b0d537d1cb /cpukit/score/src/heap.c | |
| parent | newlib-1.15.0-rtems4.8-20070912.diff. (diff) | |
| download | rtems-493e405cac79d7d0f810f051394c616011ce9ffb.tar.bz2 | |
2007-09-12 Sergei Organov <osv@javad.com>
PR 1258/rtems
* cpukit/score/src/heapallocatealigned.c (block_allocate): New routine.
* cpukit/score/src/heapallocatealigned.c (_Heap_Allocate_aligned):
Use block_allocate() instead of _Heap_Block_allocate(). Replace
_Heap_Head(the_heap)->next with equivalent _Heap_First(the_heap).
* cpukit/score/src/heap.c (_Heap_Allocate): fix comments according
to changed block split strategy in _Heap_Allocate_aligned().
Diffstat (limited to 'cpukit/score/src/heap.c')
| -rw-r--r-- | cpukit/score/src/heap.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/cpukit/score/src/heap.c b/cpukit/score/src/heap.c index 5273678d1a..042dc6d604 100644 --- a/cpukit/score/src/heap.c +++ b/cpukit/score/src/heap.c @@ -65,11 +65,13 @@ static uint32_t instance = 0; * | size < page_size | * +--------------------------------+ <- end = begin + size * - * This is what a heap looks like after first allocation of SIZE bytes. - * BSIZE stands for SIZE + 4 aligned up on 'page_size' boundary if allocation - * has been performed by _Heap_Allocate(). If allocation has been performed - * by _Heap_Allocate_aligned(), the block size BSIZE is defined differently - * (see 'heapallocatealigned.c' for details). + * Below is what a heap looks like after first allocation of SIZE bytes using + * _Heap_allocate(). BSIZE stands for SIZE + 4 aligned up on 'page_size' + * boundary. + * [NOTE: If allocation were performed by _Heap_Allocate_aligned(), the + * block size BSIZE is defined differently, and previously free block will + * be split so that upper part of it will become used block (see + * 'heapallocatealigned.c' for details).] * * +--------------------------------+ <- begin = starting_address * | unused space due to alignment | |