| 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 | |
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| 13 | /////////////////////////////////////////////////////////////////// |
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| 14 | //// is_blocking_lock |
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| 15 | /////////////////////////////////////////////////////////////////// |
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| 16 | |
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| 17 | trait is_blocking_lock(dtype L | sized(L)) { |
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| 18 | void add_( L &, struct $thread * ); // For synchronization locks to use when acquiring |
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| 19 | void remove_( L & ); // For synchronization locks to use when releasing |
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| 20 | size_t get_recursion_count( L & ); // to get recursion count for cond lock to reset after waking |
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| 21 | void set_recursion_count( L &, size_t recursion ); // to set recursion count after getting signalled; |
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| 22 | }; |
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| 23 | |
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| 24 | /////////////////////////////////////////////////////////////////// |
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| 25 | //// info_thread |
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| 26 | /////////////////////////////////////////////////////////////////// |
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| 27 | |
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| 28 | forall(dtype L | is_blocking_lock(L)) { |
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| 29 | struct info_thread { |
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| 30 | struct $thread * t; |
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| 31 | uintptr_t info; |
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| 32 | info_thread(L) * next; |
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| 33 | L * lock; |
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| 34 | }; |
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| 35 | |
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| 36 | |
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| 37 | void ?{}( info_thread(L) & this, $thread * t ); |
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| 38 | void ?{}( info_thread(L) & this, $thread * t, uintptr_t info ); |
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| 39 | void ^?{}( info_thread(L) & this ); |
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| 40 | |
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| 41 | info_thread(L) *& get_next( info_thread(L) & this ); |
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| 42 | } |
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| 43 | |
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| 44 | /////////////////////////////////////////////////////////////////// |
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| 45 | //// Blocking Locks |
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| 46 | /////////////////////////////////////////////////////////////////// |
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| 47 | struct blocking_lock { |
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| 48 | // Spin lock used for mutual exclusion |
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| 49 | __spinlock_t lock; |
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| 50 | |
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| 51 | // List of blocked threads |
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| 52 | __queue_t( struct $thread ) blocked_threads; |
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| 53 | |
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| 54 | // Count of current blocked threads |
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| 55 | size_t wait_count; |
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| 56 | |
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| 57 | // Flag if the lock allows multiple acquisition |
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| 58 | bool multi_acquisition; |
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| 59 | |
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| 60 | // Flag if lock can be released by non owner |
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| 61 | bool strict_owner; |
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| 62 | |
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| 63 | // Current thread owning the lock |
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| 64 | struct $thread * owner; |
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| 65 | |
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| 66 | // Number of recursion level |
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| 67 | size_t recursion_count; |
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| 68 | }; |
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| 69 | |
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| 70 | struct mutex_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 owner_lock { |
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| 75 | inline blocking_lock; |
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| 76 | }; |
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| 77 | |
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| 78 | struct recursive_mutex_lock { |
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| 79 | inline blocking_lock; |
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| 80 | }; |
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| 81 | |
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| 82 | void ?{}( blocking_lock & this, bool multi_acquisition, bool strict_owner ); |
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| 83 | void ^?{}( blocking_lock & this ); |
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| 84 | |
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| 85 | void ?{}( mutex_lock & this ); |
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| 86 | void ^?{}( mutex_lock & this ); |
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| 87 | |
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| 88 | void ?{}( owner_lock & this ); |
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| 89 | void ^?{}( owner_lock & this ); |
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| 90 | |
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| 91 | void ?{}( recursive_mutex_lock & this ); |
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| 92 | void ^?{}( recursive_mutex_lock & this ); |
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| 93 | |
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| 94 | void lock( blocking_lock & this ); |
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| 95 | bool try_lock( blocking_lock & this ); |
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| 96 | void unlock( blocking_lock & this ); |
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| 97 | void add_( blocking_lock & this, struct $thread * t ); |
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| 98 | void remove_( blocking_lock & this ); |
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| 99 | size_t wait_count( blocking_lock & this ); |
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| 100 | void set_recursion_count( blocking_lock & this, size_t recursion ); |
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| 101 | size_t get_recursion_count( blocking_lock & this ); |
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| 102 | |
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| 103 | void lock( mutex_lock & this ); |
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| 104 | void unlock( mutex_lock & this ); |
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| 105 | void add_( mutex_lock & this, struct $thread * t ); |
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| 106 | void remove_( mutex_lock & this ); |
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| 107 | void set_recursion_count( mutex_lock & this, size_t recursion ); |
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| 108 | size_t get_recursion_count( mutex_lock & this ); |
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| 109 | |
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| 110 | void lock( recursive_mutex_lock & this ); |
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| 111 | void unlock( recursive_mutex_lock & this ); |
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| 112 | void add_( recursive_mutex_lock & this, struct $thread * t ); |
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| 113 | void remove_( recursive_mutex_lock & this ); |
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| 114 | void set_recursion_count( recursive_mutex_lock & this, size_t recursion ); |
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| 115 | size_t get_recursion_count( recursive_mutex_lock & this ); |
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| 116 | |
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| 117 | /////////////////////////////////////////////////////////////////// |
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| 118 | //// Synchronization Locks |
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| 119 | /////////////////////////////////////////////////////////////////// |
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| 120 | forall(dtype L | is_blocking_lock(L)) { |
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| 121 | struct synchronization_lock { |
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| 122 | // Spin lock used for mutual exclusion |
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| 123 | __spinlock_t lock; |
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| 124 | |
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| 125 | // List of blocked threads |
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| 126 | __queue_t( info_thread(L) ) blocked_threads; |
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| 127 | |
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| 128 | // Count of current blocked threads |
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| 129 | int count; |
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| 130 | |
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| 131 | // If true threads will reacquire the lock they block on upon waking |
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| 132 | bool reacquire_after_signal; |
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| 133 | }; |
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| 134 | |
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| 135 | struct condition_variable { |
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| 136 | inline synchronization_lock(L); |
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| 137 | }; |
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| 138 | |
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| 139 | struct thread_queue { |
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| 140 | inline synchronization_lock(L); |
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| 141 | }; |
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| 142 | |
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| 143 | |
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| 144 | void ?{}( synchronization_lock(L) & this, bool multi_acquisition, bool strict_owner ); |
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| 145 | void ^?{}( synchronization_lock(L) & this ); |
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| 146 | |
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| 147 | void ?{}( condition_variable(L) & this ); |
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| 148 | void ^?{}( condition_variable(L) & this ); |
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| 149 | |
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| 150 | void ?{}( thread_queue(L) & this ); |
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| 151 | void ^?{}( thread_queue(L) & this ); |
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| 152 | |
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| 153 | bool notify_one( synchronization_lock(L) & this ); |
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| 154 | bool notify_all( synchronization_lock(L) & this ); |
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| 155 | |
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| 156 | uintptr_t front( synchronization_lock(L) & this ); |
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| 157 | |
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| 158 | bool empty( synchronization_lock(L) & this ); |
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| 159 | int counter( synchronization_lock(L) & this ); |
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| 160 | |
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| 161 | // wait functions that are not passed a mutex lock |
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| 162 | void wait( synchronization_lock(L) & this ); |
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| 163 | void wait( synchronization_lock(L) & this, uintptr_t info ); |
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| 164 | bool wait( synchronization_lock(L) & this, Duration duration ); |
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| 165 | bool wait( synchronization_lock(L) & this, uintptr_t info, Duration duration ); |
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| 166 | bool wait( synchronization_lock(L) & this, Time time ); |
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| 167 | bool wait( synchronization_lock(L) & this, uintptr_t info, Time time ); |
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| 168 | |
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| 169 | // wait functions that are passed a lock |
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| 170 | bool notify_one( synchronization_lock(L) & this, L & l ); |
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| 171 | bool notify_all( synchronization_lock(L) & this, L & l ); |
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| 172 | |
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| 173 | void wait( synchronization_lock(L) & this, L & l ); |
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| 174 | void wait( synchronization_lock(L) & this, L & l, uintptr_t info ); |
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| 175 | bool wait( synchronization_lock(L) & this, L & l, Duration duration ); |
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| 176 | bool wait( synchronization_lock(L) & this, L & l, uintptr_t info, Duration duration ); |
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| 177 | bool wait( synchronization_lock(L) & this, L & l, Time time ); |
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| 178 | bool wait( synchronization_lock(L) & this, L & l, uintptr_t info, Time time ); |
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| 179 | } |
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| 180 | |
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| 181 | /////////////////////////////////////////////////////////////////// |
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| 182 | //// condition lock alternative approach |
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| 183 | /////////////////////////////////////////////////////////////////// |
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| 184 | |
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| 185 | |
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| 186 | /////////////////////////////////////////////////////////////////// |
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| 187 | //// is_simple_lock |
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| 188 | /////////////////////////////////////////////////////////////////// |
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| 189 | |
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| 190 | trait is_simple_lock(dtype L | sized(L)) { |
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| 191 | void lock( L & ); // For synchronization locks to use when acquiring |
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| 192 | void unlock( L & ); // For synchronization locks to use when releasing |
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| 193 | size_t get_recursion_count( L & ); // to get recursion count for cond lock to reset after waking |
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| 194 | void set_recursion_count( L &, size_t recursion ); // to set recursion count after getting signalled; |
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| 195 | }; |
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| 196 | |
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| 197 | forall(dtype L | is_simple_lock(L)) { |
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| 198 | struct condition_lock { |
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| 199 | // Spin lock used for mutual exclusion |
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| 200 | mutex_lock m_lock; |
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| 201 | |
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| 202 | condition_variable( mutex_lock ) c_var; |
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| 203 | }; |
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| 204 | |
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| 205 | void ?{}( condition_lock(L) & this ); |
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| 206 | void ^?{}( condition_lock(L) & this ); |
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| 207 | |
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| 208 | bool notify_one( condition_lock(L) & this ); |
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| 209 | bool notify_all( condition_lock(L) & this ); |
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| 210 | void wait( condition_lock(L) & this, L & l ); |
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| 211 | } |
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