1 | /* |
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2 | * Copyright (c) 2018 embedded brains GmbH |
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3 | * |
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4 | * The license and distribution terms for this file may be |
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5 | * found in the file LICENSE in this distribution or at |
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6 | * http://www.rtems.org/license/LICENSE. |
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7 | */ |
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8 | |
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9 | #if HAVE_CONFIG_H |
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10 | #include "config.h" |
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11 | #endif |
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12 | |
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13 | #include <rtems/score/schedulerimpl.h> |
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14 | |
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15 | void _Thread_Do_unpin( Thread_Control *executing, Per_CPU_Control *cpu_self ) |
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16 | { |
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17 | ISR_lock_Context state_lock_context; |
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18 | ISR_lock_Context scheduler_lock_context; |
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19 | Scheduler_Node *pinned_node; |
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20 | const Scheduler_Control *pinned_scheduler; |
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21 | Scheduler_Node *home_node; |
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22 | const Scheduler_Control *home_scheduler; |
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23 | const Scheduler_Control *scheduler; |
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24 | |
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25 | _Thread_State_acquire( executing, &state_lock_context ); |
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26 | |
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27 | executing->Scheduler.pin_level = 0; |
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28 | |
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29 | pinned_node = SCHEDULER_NODE_OF_THREAD_SCHEDULER_NODE( |
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30 | _Chain_First( &executing->Scheduler.Scheduler_nodes ) |
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31 | ); |
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32 | pinned_scheduler = _Scheduler_Node_get_scheduler( pinned_node ); |
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33 | home_node = _Thread_Scheduler_get_home_node( executing ); |
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34 | home_scheduler = _Thread_Scheduler_get_home( executing ); |
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35 | scheduler = pinned_scheduler; |
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36 | |
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37 | executing->Scheduler.pinned_scheduler = NULL; |
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38 | |
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39 | _Scheduler_Acquire_critical( scheduler, &scheduler_lock_context ); |
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40 | |
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41 | if ( _Thread_Is_ready( executing ) ) { |
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42 | ( *scheduler->Operations.block )( scheduler, executing, pinned_node ); |
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43 | } |
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44 | |
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45 | ( *scheduler->Operations.unpin )( |
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46 | scheduler, |
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47 | executing, |
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48 | pinned_node, |
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49 | cpu_self |
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50 | ); |
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51 | |
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52 | if ( home_node != pinned_node ) { |
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53 | _Scheduler_Release_critical( scheduler, &scheduler_lock_context ); |
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54 | |
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55 | _Chain_Extract_unprotected( &home_node->Thread.Scheduler_node.Chain ); |
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56 | _Chain_Prepend_unprotected( |
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57 | &executing->Scheduler.Scheduler_nodes, |
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58 | &home_node->Thread.Scheduler_node.Chain |
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59 | ); |
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60 | scheduler = home_scheduler; |
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61 | |
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62 | _Scheduler_Acquire_critical( scheduler, &scheduler_lock_context ); |
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63 | } |
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64 | |
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65 | if ( _Thread_Is_ready( executing ) ) { |
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66 | ( *scheduler->Operations.unblock )( scheduler, executing, home_node ); |
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67 | } |
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68 | |
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69 | _Scheduler_Release_critical( scheduler, &scheduler_lock_context ); |
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70 | |
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71 | _Thread_State_release( executing, &state_lock_context ); |
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72 | } |
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