5
Last change
on this file since 21275b58 was
1142f55,
checked in by Sebastian Huber <sebastian.huber@…>, on 04/08/16 at 04:56:46
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rtems: Add and use _Region_Get_and_lock()
Get region and lock allocator in _Region_Get_and_lock() in case the
region exists and unlock it in _Region_Unlock().
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-
Property mode set to
100644
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File size:
1.4 KB
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Resize RTEMS Region Segment |
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5 | * @ingroup ClassicRegion |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2014. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <rtems/rtems/regionimpl.h> |
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22 | |
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23 | rtems_status_code rtems_region_resize_segment( |
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24 | rtems_id id, |
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25 | void *segment, |
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26 | uintptr_t size, |
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27 | uintptr_t *old_size |
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28 | ) |
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29 | { |
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30 | uintptr_t avail_size; |
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31 | uintptr_t osize; |
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32 | rtems_status_code status; |
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33 | Heap_Resize_status resize_status; |
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34 | Region_Control *the_region; |
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35 | |
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36 | if ( old_size == NULL ) { |
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37 | return RTEMS_INVALID_ADDRESS; |
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38 | } |
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39 | |
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40 | the_region = _Region_Get_and_lock( id ); |
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41 | |
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42 | if ( the_region == NULL ) { |
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43 | return RTEMS_INVALID_ID; |
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44 | } |
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45 | |
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46 | resize_status = _Heap_Resize_block( |
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47 | &the_region->Memory, |
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48 | segment, |
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49 | (uint32_t) size, |
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50 | &osize, |
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51 | &avail_size |
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52 | ); |
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53 | *old_size = (uint32_t) osize; |
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54 | |
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55 | switch ( resize_status ) { |
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56 | case HEAP_RESIZE_SUCCESSFUL: |
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57 | /* Unlocks allocator */ |
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58 | _Region_Process_queue( the_region ); |
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59 | return RTEMS_SUCCESSFUL; |
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60 | |
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61 | case HEAP_RESIZE_UNSATISFIED: |
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62 | status = RTEMS_UNSATISFIED; |
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63 | break; |
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64 | |
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65 | default: |
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66 | status = RTEMS_INVALID_ADDRESS; |
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67 | break; |
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68 | } |
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69 | |
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70 | _Region_Unlock( the_region ); |
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71 | return status; |
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72 | } |
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