1 | #include <stdbool.h> |
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2 | |
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3 | #include "bits/algorithm.hfa" |
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4 | #include "bits/locks.hfa" |
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5 | #include "bits/containers.hfa" |
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6 | |
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7 | #include "invoke.h" |
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8 | |
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9 | #include "time_t.hfa" |
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10 | #include "time.hfa" |
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11 | #include <sys/time.h> |
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12 | #include "alarm.hfa" |
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13 | |
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14 | /////////////////////////////////////////////////////////////////// |
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15 | //// is_blocking_lock |
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16 | /////////////////////////////////////////////////////////////////// |
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17 | |
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18 | trait is_blocking_lock(dtype L | sized(L)) { |
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19 | void add_( L &, struct $thread * ); // For synchronization locks to use when acquiring |
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20 | void remove_( L & ); // For synchronization locks to use when releasing |
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21 | size_t get_recursion_count( L & ); // to get recursion count for cond lock to reset after waking |
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22 | void set_recursion_count( L &, size_t recursion ); // to set recursion count after getting signalled; |
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23 | }; |
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24 | |
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25 | /////////////////////////////////////////////////////////////////// |
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26 | //// info_thread |
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27 | /////////////////////////////////////////////////////////////////// |
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28 | |
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29 | forall(dtype L | is_blocking_lock(L)) { |
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30 | struct info_thread { |
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31 | struct $thread * t; |
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32 | uintptr_t info; |
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33 | info_thread(L) * next; |
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34 | L * lock; |
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35 | bool listed; // true if info_thread is on queue, false otherwise; |
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36 | }; |
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37 | |
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38 | |
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39 | void ?{}( info_thread(L) & this, $thread * t ); |
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40 | void ?{}( info_thread(L) & this, $thread * t, uintptr_t info ); |
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41 | void ^?{}( info_thread(L) & this ); |
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42 | |
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43 | info_thread(L) *& get_next( info_thread(L) & this ); |
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44 | } |
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45 | |
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46 | /////////////////////////////////////////////////////////////////// |
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47 | //// Blocking Locks |
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48 | /////////////////////////////////////////////////////////////////// |
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49 | struct blocking_lock { |
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50 | // Spin lock used for mutual exclusion |
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51 | __spinlock_t lock; |
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52 | |
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53 | // List of blocked threads |
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54 | __queue_t( struct $thread ) blocked_threads; |
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55 | |
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56 | // Count of current blocked threads |
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57 | size_t wait_count; |
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58 | |
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59 | // Flag if the lock allows multiple acquisition |
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60 | bool multi_acquisition; |
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61 | |
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62 | // Flag if lock can be released by non owner |
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63 | bool strict_owner; |
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64 | |
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65 | // Current thread owning the lock |
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66 | struct $thread * owner; |
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67 | |
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68 | // Number of recursion level |
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69 | size_t recursion_count; |
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70 | }; |
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71 | |
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72 | struct mutex_lock { |
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73 | inline blocking_lock; |
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74 | }; |
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75 | |
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76 | struct owner_lock { |
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77 | inline blocking_lock; |
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78 | }; |
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79 | |
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80 | struct recursive_mutex_lock { |
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81 | inline blocking_lock; |
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82 | }; |
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83 | |
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84 | void ?{}( blocking_lock & this, bool multi_acquisition, bool strict_owner ); |
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85 | void ^?{}( blocking_lock & this ); |
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86 | |
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87 | void ?{}( mutex_lock & this ); |
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88 | void ^?{}( mutex_lock & this ); |
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89 | |
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90 | void ?{}( owner_lock & this ); |
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91 | void ^?{}( owner_lock & this ); |
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92 | |
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93 | void ?{}( recursive_mutex_lock & this ); |
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94 | void ^?{}( recursive_mutex_lock & this ); |
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95 | |
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96 | void lock( blocking_lock & this ); |
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97 | bool try_lock( blocking_lock & this ); |
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98 | void unlock( blocking_lock & this ); |
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99 | void add_( blocking_lock & this, struct $thread * t ); |
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100 | void remove_( blocking_lock & this ); |
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101 | size_t wait_count( blocking_lock & this ); |
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102 | void set_recursion_count( blocking_lock & this, size_t recursion ); |
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103 | size_t get_recursion_count( blocking_lock & this ); |
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104 | |
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105 | void lock( mutex_lock & this ); |
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106 | void unlock( mutex_lock & this ); |
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107 | void add_( mutex_lock & this, struct $thread * t ); |
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108 | void remove_( mutex_lock & this ); |
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109 | void set_recursion_count( mutex_lock & this, size_t recursion ); |
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110 | size_t get_recursion_count( mutex_lock & this ); |
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111 | |
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112 | void lock( recursive_mutex_lock & this ); |
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113 | void unlock( recursive_mutex_lock & this ); |
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114 | void add_( recursive_mutex_lock & this, struct $thread * t ); |
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115 | void remove_( recursive_mutex_lock & this ); |
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116 | void set_recursion_count( recursive_mutex_lock & this, size_t recursion ); |
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117 | size_t get_recursion_count( recursive_mutex_lock & this ); |
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118 | |
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119 | /////////////////////////////////////////////////////////////////// |
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120 | //// Synchronization Locks |
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121 | /////////////////////////////////////////////////////////////////// |
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122 | forall(dtype 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 | __queue_t( 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 | struct alarm_node_wrap { |
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138 | alarm_node_t alarm_node; |
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139 | |
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140 | condition_variable(L) * cond; |
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141 | |
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142 | info_thread(L) ** i; |
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143 | }; |
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144 | |
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145 | void ?{}( alarm_node_wrap(L) & this, $thread * thrd, Time alarm, Duration period, Alarm_Callback callback ); |
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146 | void ^?{}( alarm_node_wrap(L) & this ); |
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147 | |
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148 | void alarm_node_callback( alarm_node_wrap(L) & this ); |
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149 | |
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150 | void alarm_node_wrap_cast( alarm_node_t & a ); |
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151 | |
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152 | bool notify_one( condition_variable(L) & this ); |
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153 | bool notify_all( condition_variable(L) & this ); |
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154 | |
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155 | uintptr_t front( condition_variable(L) & this ); |
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156 | |
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157 | bool empty( condition_variable(L) & this ); |
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158 | int counter( condition_variable(L) & this ); |
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159 | |
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160 | // TODO: look into changing timout routines to return bool showing if signalled or woken by kernel |
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161 | void wait( condition_variable(L) & this ); |
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162 | void wait( condition_variable(L) & this, uintptr_t info ); |
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163 | void wait( condition_variable(L) & this, Duration duration ); |
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164 | void wait( condition_variable(L) & this, uintptr_t info, Duration duration ); |
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165 | void wait( condition_variable(L) & this, Time time ); |
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166 | void wait( condition_variable(L) & this, uintptr_t info, Time time ); |
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167 | |
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168 | void wait( condition_variable(L) & this, L & l ); |
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169 | void wait( condition_variable(L) & this, L & l, uintptr_t info ); |
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170 | void wait( condition_variable(L) & this, L & l, Duration duration ); |
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171 | void wait( condition_variable(L) & this, L & l, uintptr_t info, Duration duration ); |
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172 | void wait( condition_variable(L) & this, L & l, Time time ); |
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173 | void wait( condition_variable(L) & this, L & l, uintptr_t info, Time time ); |
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174 | } |
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