1 | /* |
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2 | * Thread Dispatch Wrapper Implmentation |
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3 | * |
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4 | * COPYRIGHT (c) 1989-2013. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.com/license/LICENSE. |
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10 | */ |
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11 | |
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12 | #include "shell.h" |
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13 | #include <schedsim_shell.h> |
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14 | |
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15 | #include <stdlib.h> |
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16 | #include <stdio.h> |
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17 | #include <rtems.h> |
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18 | |
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19 | typedef Thread_Control * Thread_Control_ptr; |
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20 | uint32_t Schedsim_Current_cpu = 0; |
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21 | |
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22 | Thread_Control_ptr *last_heir = NULL; |
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23 | Thread_Control_ptr *last_executing = NULL; |
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24 | |
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25 | extern void __real__Thread_Dispatch(void); |
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26 | |
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27 | #if RTEMS_SMP |
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28 | #define MAX_CPUS _SMP_Processor_count |
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29 | #else |
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30 | #define MAX_CPUS 1 |
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31 | #endif |
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32 | |
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33 | void Init__wrap__Thread_Dispatch() |
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34 | { |
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35 | last_heir = (Thread_Control_ptr *) calloc( |
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36 | sizeof( Thread_Control_ptr ), |
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37 | MAX_CPUS |
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38 | ); |
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39 | last_executing = (Thread_Control_ptr *) calloc( |
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40 | sizeof( Thread_Control_ptr ), |
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41 | MAX_CPUS |
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42 | ); |
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43 | } |
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44 | |
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45 | void check_heir_and_executing(void) |
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46 | { |
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47 | uint32_t level; |
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48 | |
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49 | _ISR_Disable_without_giant( level ); |
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50 | if ( last_heir[Schedsim_Current_cpu] != _Thread_Heir ) |
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51 | PRINT_HEIR(); |
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52 | |
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53 | if ( last_executing[Schedsim_Current_cpu] != _Thread_Executing ) |
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54 | PRINT_EXECUTING(); |
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55 | |
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56 | last_heir[Schedsim_Current_cpu] = _Thread_Heir; |
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57 | last_executing[Schedsim_Current_cpu] = _Thread_Executing; |
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58 | _ISR_Enable_without_giant( level ); |
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59 | } |
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60 | |
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61 | void __wrap__Thread_Dispatch(void) |
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62 | { |
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63 | uint32_t cpu; |
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64 | uint32_t current_cpu; |
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65 | |
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66 | if ( !schedsim_is_dispatch_allowed() ) |
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67 | return; |
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68 | |
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69 | current_cpu = Schedsim_Current_cpu; |
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70 | for ( cpu=0 ; cpu < MAX_CPUS ; cpu++ ) { |
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71 | Schedsim_Current_cpu = cpu; |
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72 | check_heir_and_executing(); |
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73 | __real__Thread_Dispatch(); |
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74 | check_heir_and_executing(); |
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75 | } |
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76 | |
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77 | Schedsim_Current_cpu = current_cpu; |
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78 | } |
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