1 | /* |
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2 | * $Id$ |
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3 | */ |
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4 | |
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5 | #include <sched.h> |
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6 | |
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7 | #include <rtems/system.h> |
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8 | #include <rtems/score/tod.h> |
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9 | #include <rtems/score/thread.h> |
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10 | #include <rtems/posix/priority.h> |
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11 | |
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12 | /*PAGE |
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13 | * |
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14 | * 13.3.1 Set Scheduling Parameters, P1003.1b-1993, p. 252 |
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15 | * |
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16 | */ |
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17 | |
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18 | int sched_setparam( |
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19 | pid_t pid, |
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20 | const struct sched_param *param |
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21 | ) |
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22 | { |
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23 | return POSIX_NOT_IMPLEMENTED(); |
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24 | } |
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25 | |
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26 | /*PAGE |
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27 | * |
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28 | * 13.3.2 Set Scheduling Parameters, P1003.1b-1993, p. 253 |
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29 | */ |
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30 | |
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31 | int sched_getparam( |
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32 | pid_t pid, |
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33 | const struct sched_param *param |
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34 | ) |
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35 | { |
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36 | return POSIX_NOT_IMPLEMENTED(); |
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37 | } |
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38 | |
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39 | /*PAGE |
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40 | * |
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41 | * 13.3.3 Set Scheduling Policy and Scheduling Parameters, |
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42 | * P1003.1b-1993, p. 254 |
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43 | */ |
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44 | |
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45 | int sched_setscheduler( |
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46 | pid_t pid, |
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47 | int policy, |
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48 | const struct sched_param *param |
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49 | ) |
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50 | { |
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51 | return POSIX_NOT_IMPLEMENTED(); |
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52 | } |
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53 | |
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54 | /*PAGE |
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55 | * |
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56 | * 13.3.4 Get Scheduling Policy, P1003.1b-1993, p. 256 |
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57 | */ |
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58 | |
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59 | int sched_getscheduler( |
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60 | pid_t pid |
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61 | ) |
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62 | { |
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63 | return POSIX_NOT_IMPLEMENTED(); |
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64 | } |
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65 | |
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66 | /*PAGE |
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67 | * |
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68 | * 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258 |
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69 | */ |
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70 | |
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71 | int sched_get_priority_max( |
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72 | int policy |
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73 | ) |
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74 | { |
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75 | /* XXX error check the policy */ |
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76 | return POSIX_SCHEDULER_MAXIMUM_PRIORITY; |
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77 | } |
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78 | |
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79 | /*PAGE |
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80 | * |
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81 | * 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258 |
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82 | */ |
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83 | |
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84 | int sched_get_priority_min( |
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85 | int policy |
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86 | ) |
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87 | { |
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88 | /* XXX error check the policy */ |
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89 | return POSIX_SCHEDULER_MINIMUM_PRIORITY; |
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90 | } |
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91 | |
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92 | /*PAGE |
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93 | * |
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94 | * 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258 |
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95 | */ |
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96 | |
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97 | int sched_rr_get_interval( |
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98 | pid_t pid, |
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99 | struct timespec *interval |
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100 | ) |
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101 | { |
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102 | time_t us_per_quantum; |
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103 | |
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104 | /* XXX eventually should support different time quantums per thread */ |
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105 | |
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106 | /* XXX should get for errors? (bad pid) */ |
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107 | |
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108 | us_per_quantum = _TOD_Microseconds_per_tick * _Thread_Ticks_per_timeslice; |
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109 | |
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110 | interval->tv_sec = us_per_quantum / TOD_MICROSECONDS_PER_SECOND; |
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111 | interval->tv_nsec = (us_per_quantum % TOD_MICROSECONDS_PER_SECOND) * 1000; |
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112 | return 0; |
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113 | } |
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114 | |
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115 | /*PAGE |
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116 | * |
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117 | * 13.3.5 Yield Processor, P1003.1b-1993, p. 257 |
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118 | */ |
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119 | |
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120 | int sched_yield( void ) |
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121 | { |
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122 | _Thread_Yield_processor(); |
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123 | return 0; |
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124 | } |
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