source:
rtems/cpukit/rtems/src/regionresizesegment.c
@
1240aade
Last change on this file since 1240aade was 1142f55, checked in by Sebastian Huber <sebastian.huber@…>, on 04/08/16 at 04:56:46 | |
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File size: 1.4 KB |
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[52adc808] | 1 | /** |
2 | * @file | |
[80f2885b] | 3 | * |
[52adc808] | 4 | * @brief Resize RTEMS Region Segment |
5 | * @ingroup ClassicRegion | |
6 | */ | |
7 | ||
8 | /* | |
[3a638ce] | 9 | * COPYRIGHT (c) 1989-2014. |
[80f2885b] | 10 | * On-Line Applications Research Corporation (OAR). |
11 | * | |
12 | * The license and distribution terms for this file may be | |
13 | * found in the file LICENSE in this distribution or at | |
[c499856] | 14 | * http://www.rtems.org/license/LICENSE. |
[80f2885b] | 15 | */ |
16 | ||
17 | #if HAVE_CONFIG_H | |
18 | #include "config.h" | |
19 | #endif | |
20 | ||
[f6c7c57d] | 21 | #include <rtems/rtems/regionimpl.h> |
[80f2885b] | 22 | |
23 | rtems_status_code rtems_region_resize_segment( | |
[d3b72ca3] | 24 | rtems_id id, |
[80f2885b] | 25 | void *segment, |
[dea3eccb] | 26 | uintptr_t size, |
27 | uintptr_t *old_size | |
[80f2885b] | 28 | ) |
29 | { | |
[572cb624] | 30 | uintptr_t avail_size; |
31 | uintptr_t osize; | |
32 | rtems_status_code status; | |
33 | Heap_Resize_status resize_status; | |
34 | Region_Control *the_region; | |
[80f2885b] | 35 | |
[572cb624] | 36 | if ( old_size == NULL ) { |
[80f2885b] | 37 | return RTEMS_INVALID_ADDRESS; |
[572cb624] | 38 | } |
[80f2885b] | 39 | |
[1142f55] | 40 | the_region = _Region_Get_and_lock( id ); |
[80f2885b] | 41 | |
[1142f55] | 42 | if ( the_region == NULL ) { |
43 | return RTEMS_INVALID_ID; | |
44 | } | |
[5700b804] | 45 | |
[1142f55] | 46 | resize_status = _Heap_Resize_block( |
47 | &the_region->Memory, | |
48 | segment, | |
49 | (uint32_t) size, | |
50 | &osize, | |
51 | &avail_size | |
52 | ); | |
53 | *old_size = (uint32_t) osize; | |
[80f2885b] | 54 | |
[1142f55] | 55 | switch ( resize_status ) { |
56 | case HEAP_RESIZE_SUCCESSFUL: | |
57 | /* Unlocks allocator */ | |
58 | _Region_Process_queue( the_region ); | |
59 | return RTEMS_SUCCESSFUL; | |
[80f2885b] | 60 | |
[1142f55] | 61 | case HEAP_RESIZE_UNSATISFIED: |
62 | status = RTEMS_UNSATISFIED; | |
63 | break; | |
[80f2885b] | 64 | |
[1142f55] | 65 | default: |
66 | status = RTEMS_INVALID_ADDRESS; | |
67 | break; | |
[572cb624] | 68 | } |
[80f2885b] | 69 | |
[1142f55] | 70 | _Region_Unlock( the_region ); |
[572cb624] | 71 | return status; |
[80f2885b] | 72 | } |
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