1 | #pragma once |
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2 | |
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3 | #include <stdbool.h> |
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4 | |
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5 | #include "bits/locks.hfa" |
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6 | #include "bits/sequence.hfa" |
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7 | |
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8 | #include "invoke.h" |
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9 | |
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10 | #include "time_t.hfa" |
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11 | #include "time.hfa" |
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12 | |
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13 | //----------------------------------------------------------------------------- |
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14 | // is_blocking_lock |
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15 | trait is_blocking_lock(L & | sized(L)) { |
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16 | // For synchronization locks to use when acquiring |
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17 | void on_notify( L &, struct $thread * ); |
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18 | |
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19 | // For synchronization locks to use when releasing |
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20 | void on_wait( L & ); |
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21 | |
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22 | // to get recursion count for cond lock to reset after waking |
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23 | size_t get_recursion_count( L & ); |
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24 | |
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25 | // to set recursion count after getting signalled; |
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26 | void set_recursion_count( L &, size_t recursion ); |
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27 | }; |
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28 | |
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29 | //----------------------------------------------------------------------------- |
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30 | // info_thread |
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31 | // the info thread is a wrapper around a thread used |
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32 | // to store extra data for use in the condition variable |
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33 | forall(L & | is_blocking_lock(L)) { |
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34 | struct info_thread; |
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35 | |
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36 | // for use by sequence |
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37 | info_thread(L) *& Back( info_thread(L) * this ); |
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38 | info_thread(L) *& Next( info_thread(L) * this ); |
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39 | } |
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40 | |
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41 | //----------------------------------------------------------------------------- |
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42 | // Blocking Locks |
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43 | struct blocking_lock { |
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44 | // Spin lock used for mutual exclusion |
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45 | __spinlock_t lock; |
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46 | |
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47 | // List of blocked threads |
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48 | Sequence( $thread ) blocked_threads; |
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49 | |
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50 | // Count of current blocked threads |
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51 | size_t wait_count; |
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52 | |
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53 | // Flag if the lock allows multiple acquisition |
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54 | bool multi_acquisition; |
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55 | |
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56 | // Flag if lock can be released by non owner |
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57 | bool strict_owner; |
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58 | |
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59 | // Current thread owning the lock |
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60 | struct $thread * owner; |
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61 | |
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62 | // Number of recursion level |
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63 | size_t recursion_count; |
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64 | }; |
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65 | |
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66 | struct single_acquisition_lock { |
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67 | inline blocking_lock; |
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68 | }; |
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69 | |
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70 | struct owner_lock { |
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71 | inline blocking_lock; |
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72 | }; |
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73 | |
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74 | struct multiple_acquisition_lock { |
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75 | inline blocking_lock; |
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76 | }; |
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77 | |
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78 | void ?{}( blocking_lock & this, bool multi_acquisition, bool strict_owner ); |
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79 | void ^?{}( blocking_lock & this ); |
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80 | |
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81 | void ?{}( single_acquisition_lock & this ); |
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82 | void ^?{}( single_acquisition_lock & this ); |
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83 | |
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84 | void ?{}( owner_lock & this ); |
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85 | void ^?{}( owner_lock & this ); |
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86 | |
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87 | void ?{}( multiple_acquisition_lock & this ); |
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88 | void ^?{}( multiple_acquisition_lock & this ); |
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89 | |
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90 | void lock( blocking_lock & this ); |
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91 | bool try_lock( blocking_lock & this ); |
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92 | void unlock( blocking_lock & this ); |
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93 | void on_notify( blocking_lock & this, struct $thread * t ); |
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94 | void on_wait( blocking_lock & this ); |
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95 | size_t wait_count( blocking_lock & this ); |
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96 | void set_recursion_count( blocking_lock & this, size_t recursion ); |
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97 | size_t get_recursion_count( blocking_lock & this ); |
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98 | |
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99 | void lock( single_acquisition_lock & this ); |
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100 | void unlock( single_acquisition_lock & this ); |
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101 | void on_notify( single_acquisition_lock & this, struct $thread * t ); |
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102 | void on_wait( single_acquisition_lock & this ); |
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103 | void set_recursion_count( single_acquisition_lock & this, size_t recursion ); |
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104 | size_t get_recursion_count( single_acquisition_lock & this ); |
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105 | |
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106 | void lock( owner_lock & this ); |
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107 | void unlock( owner_lock & this ); |
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108 | void on_notify( owner_lock & this, struct $thread * t ); |
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109 | void on_wait( owner_lock & this ); |
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110 | void set_recursion_count( owner_lock & this, size_t recursion ); |
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111 | size_t get_recursion_count( owner_lock & this ); |
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112 | |
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113 | void lock( multiple_acquisition_lock & this ); |
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114 | void unlock( multiple_acquisition_lock & this ); |
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115 | void on_notify( multiple_acquisition_lock & this, struct $thread * t ); |
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116 | void on_wait( multiple_acquisition_lock & this ); |
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117 | void set_recursion_count( multiple_acquisition_lock & this, size_t recursion ); |
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118 | size_t get_recursion_count( multiple_acquisition_lock & this ); |
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119 | |
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120 | //----------------------------------------------------------------------------- |
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121 | // Synchronization Locks |
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122 | forall(L & | is_blocking_lock(L)) { |
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123 | struct condition_variable { |
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124 | // Spin lock used for mutual exclusion |
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125 | __spinlock_t lock; |
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126 | |
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127 | // List of blocked threads |
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128 | Sequence( info_thread(L) ) blocked_threads; |
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129 | |
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130 | // Count of current blocked threads |
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131 | int count; |
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132 | }; |
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133 | |
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134 | void ?{}( condition_variable(L) & this ); |
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135 | void ^?{}( condition_variable(L) & this ); |
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136 | |
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137 | bool notify_one( condition_variable(L) & this ); |
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138 | bool notify_all( condition_variable(L) & this ); |
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139 | |
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140 | uintptr_t front( condition_variable(L) & this ); |
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141 | |
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142 | bool empty ( condition_variable(L) & this ); |
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143 | int counter( condition_variable(L) & this ); |
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144 | |
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145 | void wait( condition_variable(L) & this ); |
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146 | void wait( condition_variable(L) & this, uintptr_t info ); |
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147 | bool wait( condition_variable(L) & this, Duration duration ); |
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148 | bool wait( condition_variable(L) & this, uintptr_t info, Duration duration ); |
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149 | bool wait( condition_variable(L) & this, Time time ); |
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150 | bool wait( condition_variable(L) & this, uintptr_t info, Time time ); |
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151 | |
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152 | void wait( condition_variable(L) & this, L & l ); |
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153 | void wait( condition_variable(L) & this, L & l, uintptr_t info ); |
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154 | bool wait( condition_variable(L) & this, L & l, Duration duration ); |
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155 | bool wait( condition_variable(L) & this, L & l, uintptr_t info, Duration duration ); |
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156 | bool wait( condition_variable(L) & this, L & l, Time time ); |
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157 | bool wait( condition_variable(L) & this, L & l, uintptr_t info, Time time ); |
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158 | } |
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159 | |
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160 | //----------------------------------------------------------------------------- |
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161 | // Semaphore |
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162 | struct semaphore { |
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163 | __spinlock_t lock; |
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164 | int count; |
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165 | __queue_t($thread) waiting; |
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166 | }; |
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167 | |
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168 | void ?{}(semaphore & this, int count = 1); |
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169 | void ^?{}(semaphore & this); |
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170 | bool P (semaphore & this); |
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171 | bool V (semaphore & this); |
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172 | bool V (semaphore & this, unsigned count); |
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