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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-01-28 11:49:57 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-02-04 10:06:34 +0100 |
| commit | a49bc354a77f7710fcfa7995e18107170d32eb70 (patch) | |
| tree | 55660903659862a0d481ee6db136154437c02c6f /cpukit/score/include/rtems/score/heap.h | |
| parent | score: Add _Workspace_Allocate_aligned() (diff) | |
| download | rtems-a49bc354a77f7710fcfa7995e18107170d32eb70.tar.bz2 | |
score: Add _Heap_Size_with_overhead()
Diffstat (limited to 'cpukit/score/include/rtems/score/heap.h')
| -rw-r--r-- | cpukit/score/include/rtems/score/heap.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/cpukit/score/include/rtems/score/heap.h b/cpukit/score/include/rtems/score/heap.h index 80a041ca7c..53b569af82 100644 --- a/cpukit/score/include/rtems/score/heap.h +++ b/cpukit/score/include/rtems/score/heap.h @@ -464,6 +464,29 @@ RTEMS_INLINE_ROUTINE uintptr_t _Heap_Area_overhead( return 2 * (page_size - 1) + HEAP_BLOCK_HEADER_SIZE; } +/** + * @brief Returns the size with administration and alignment overhead for one + * allocation. + */ +RTEMS_INLINE_ROUTINE uintptr_t _Heap_Size_with_overhead( + uintptr_t page_size, + uintptr_t size, + uintptr_t alignment +) +{ + if ( page_size != 0 ) { + page_size = _Heap_Align_up( page_size, CPU_ALIGNMENT ); + } else { + page_size = CPU_ALIGNMENT; + } + + if ( page_size < alignment ) { + page_size = alignment; + } + + return HEAP_BLOCK_HEADER_SIZE + page_size - 1 + size; +} + /** @} */ #ifdef __cplusplus |