[8def349] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // invoke.h -- |
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| 8 | // |
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| 9 | // Author : Thierry Delisle |
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| 10 | // Created On : Tue Jan 17 12:27:26 2016 |
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[6b0b624] | 11 | // Last Modified By : Peter A. Buhr |
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[381fdee] | 12 | // Last Modified On : Fri Feb 9 14:41:55 2018 |
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| 13 | // Update Count : 6 |
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[8def349] | 14 | // |
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| 15 | |
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[0cf5b79] | 16 | #include "bits/containers.h" |
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[ea7d2b0] | 17 | #include "bits/defs.h" |
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| 18 | #include "bits/locks.h" |
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[78b3f52] | 19 | |
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[0cf5b79] | 20 | #ifdef __cforall |
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[5c81105] | 21 | extern "C" { |
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| 22 | #endif |
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| 23 | |
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| 24 | #if ! defined(__CFA_INVOKE_PRIVATE__) |
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[78b3f52] | 25 | #ifndef _INVOKE_H_ |
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| 26 | #define _INVOKE_H_ |
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| 27 | |
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[0cf5b79] | 28 | #ifdef __cforall |
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[025278e] | 29 | extern "Cforall" { |
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[0cf5b79] | 30 | static inline struct thread_desc * & get_next( struct thread_desc & this ); |
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| 31 | static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this ); |
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[025278e] | 32 | } |
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| 33 | #endif |
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| 34 | |
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| 35 | struct coStack_t { |
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| 36 | // size of stack |
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[c1a9c86] | 37 | size_t size; |
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[025278e] | 38 | |
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| 39 | // pointer to stack |
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| 40 | void *storage; |
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| 41 | |
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| 42 | // stack grows towards stack limit |
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| 43 | void *limit; |
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| 44 | |
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| 45 | // base of stack |
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| 46 | void *base; |
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| 47 | |
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| 48 | // address of cfa_context_t |
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| 49 | void *context; |
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| 50 | |
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| 51 | // address of top of storage |
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| 52 | void *top; |
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| 53 | |
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| 54 | // whether or not the user allocated the stack |
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| 55 | bool userStack; |
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| 56 | }; |
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| 57 | |
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| 58 | enum coroutine_state { Halted, Start, Inactive, Active, Primed }; |
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| 59 | |
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| 60 | struct coroutine_desc { |
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| 61 | // stack information of the coroutine |
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| 62 | struct coStack_t stack; |
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| 63 | |
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| 64 | // textual name for coroutine/task, initialized by uC++ generated code |
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| 65 | const char *name; |
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| 66 | |
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| 67 | // copy of global UNIX variable errno |
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| 68 | int errno_; |
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| 69 | |
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| 70 | // current execution status for coroutine |
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| 71 | enum coroutine_state state; |
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| 72 | |
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| 73 | // first coroutine to resume this one |
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| 74 | struct coroutine_desc * starter; |
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| 75 | |
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| 76 | // last coroutine to resume this one |
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| 77 | struct coroutine_desc * last; |
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| 78 | }; |
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| 79 | |
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| 80 | struct __waitfor_mask_t { |
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| 81 | // the index of the accepted function, -1 if none |
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| 82 | short * accepted; |
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| 83 | |
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| 84 | // list of acceptable functions, null if any |
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[0cf5b79] | 85 | __small_array_t(struct __acceptable_t) __cfa_anonymous_object; |
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[025278e] | 86 | }; |
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| 87 | |
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| 88 | struct monitor_desc { |
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| 89 | // spinlock to protect internal data |
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[ea7d2b0] | 90 | struct __spinlock_t lock; |
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[025278e] | 91 | |
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| 92 | // current owner of the monitor |
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| 93 | struct thread_desc * owner; |
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| 94 | |
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| 95 | // queue of threads that are blocked waiting for the monitor |
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[0cf5b79] | 96 | __queue_t(struct thread_desc) entry_queue; |
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[025278e] | 97 | |
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| 98 | // stack of conditions to run next once we exit the monitor |
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[0cf5b79] | 99 | __stack_t(struct __condition_criterion_t) signal_stack; |
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[025278e] | 100 | |
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| 101 | // monitor routines can be called recursively, we need to keep track of that |
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| 102 | unsigned int recursion; |
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| 103 | |
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| 104 | // mask used to know if some thread is waiting for something while holding the monitor |
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| 105 | struct __waitfor_mask_t mask; |
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| 106 | |
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| 107 | // node used to signal the dtor in a waitfor dtor |
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| 108 | struct __condition_node_t * dtor_node; |
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| 109 | }; |
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| 110 | |
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| 111 | struct __monitor_group_t { |
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| 112 | // currently held monitors |
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[0cf5b79] | 113 | __small_array_t(monitor_desc*) __cfa_anonymous_object; |
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[025278e] | 114 | |
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| 115 | // last function that acquired monitors |
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[c1a9c86] | 116 | fptr_t func; |
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[025278e] | 117 | }; |
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| 118 | |
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| 119 | struct thread_desc { |
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| 120 | // Core threading fields |
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| 121 | // coroutine body used to store context |
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| 122 | struct coroutine_desc self_cor; |
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| 123 | |
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[82c948c] | 124 | // current active context |
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| 125 | struct coroutine_desc * curr_cor; |
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| 126 | |
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[025278e] | 127 | // monitor body used for mutual exclusion |
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| 128 | struct monitor_desc self_mon; |
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| 129 | |
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| 130 | // pointer to monitor with sufficient lifetime for current monitors |
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| 131 | struct monitor_desc * self_mon_p; |
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| 132 | |
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| 133 | // monitors currently held by this thread |
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| 134 | struct __monitor_group_t monitors; |
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| 135 | |
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| 136 | // Link lists fields |
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| 137 | // instrusive link field for threads |
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| 138 | struct thread_desc * next; |
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[f7d6bb0] | 139 | |
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| 140 | __cfaabi_dbg_debug_do( |
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| 141 | // instrusive link field for debugging |
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| 142 | struct thread_desc * dbg_next; |
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| 143 | struct thread_desc * dbg_prev; |
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| 144 | ) |
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[97e3296] | 145 | }; |
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[8118303] | 146 | |
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[0cf5b79] | 147 | #ifdef __cforall |
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[b18830e] | 148 | extern "Cforall" { |
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[0cf5b79] | 149 | static inline thread_desc * & get_next( thread_desc & this ) { |
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| 150 | return this.next; |
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| 151 | } |
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| 152 | |
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| 153 | static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this ); |
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| 154 | |
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| 155 | static inline void ?{}(__monitor_group_t & this) { |
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| 156 | (this.data){NULL}; |
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| 157 | (this.size){0}; |
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| 158 | (this.func){NULL}; |
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| 159 | } |
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| 160 | |
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| 161 | static inline void ?{}(__monitor_group_t & this, struct monitor_desc ** data, __lock_size_t size, fptr_t func) { |
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| 162 | (this.data){data}; |
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| 163 | (this.size){size}; |
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| 164 | (this.func){func}; |
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[025278e] | 165 | } |
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| 166 | |
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| 167 | static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) { |
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[0cf5b79] | 168 | if( (lhs.data != 0) != (rhs.data != 0) ) return false; |
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[025278e] | 169 | if( lhs.size != rhs.size ) return false; |
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| 170 | if( lhs.func != rhs.func ) return false; |
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| 171 | |
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| 172 | // Check that all the monitors match |
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| 173 | for( int i = 0; i < lhs.size; i++ ) { |
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| 174 | // If not a match, check next function |
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| 175 | if( lhs[i] != rhs[i] ) return false; |
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| 176 | } |
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| 177 | |
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| 178 | return true; |
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| 179 | } |
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[0cf5b79] | 180 | |
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| 181 | static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) { |
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| 182 | lhs.data = rhs.data; |
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| 183 | lhs.size = rhs.size; |
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| 184 | lhs.func = rhs.func; |
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| 185 | } |
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[025278e] | 186 | } |
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| 187 | #endif |
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[b18830e] | 188 | |
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[5c81105] | 189 | #endif //_INVOKE_H_ |
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| 190 | #else //! defined(__CFA_INVOKE_PRIVATE__) |
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| 191 | #ifndef _INVOKE_PRIVATE_H_ |
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| 192 | #define _INVOKE_PRIVATE_H_ |
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[b227f68] | 193 | |
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[025278e] | 194 | struct machine_context_t { |
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| 195 | void *SP; |
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| 196 | void *FP; |
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| 197 | void *PC; |
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| 198 | }; |
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| 199 | |
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| 200 | // assembler routines that performs the context switch |
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| 201 | extern void CtxInvokeStub( void ); |
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| 202 | void CtxSwitch( void * from, void * to ) asm ("CtxSwitch"); |
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| 203 | |
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[381fdee] | 204 | #if defined( __i386 ) |
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[025278e] | 205 | #define CtxGet( ctx ) __asm__ ( \ |
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| 206 | "movl %%esp,%0\n" \ |
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| 207 | "movl %%ebp,%1\n" \ |
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| 208 | : "=rm" (ctx.SP), "=rm" (ctx.FP) ) |
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[381fdee] | 209 | #elif defined( __x86_64 ) |
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| 210 | #define CtxGet( ctx ) __asm__ ( \ |
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| 211 | "movq %%rsp,%0\n" \ |
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| 212 | "movq %%rbp,%1\n" \ |
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| 213 | : "=rm" (ctx.SP), "=rm" (ctx.FP) ) |
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[b158d8f] | 214 | #elif defined( __ARM_ARCH ) |
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| 215 | #define CtxGet( ctx ) __asm__ ( \ |
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| 216 | "mov %0,%%sp\n" \ |
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| 217 | "mov %1,%%r11\n" \ |
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| 218 | : "=rm" (ctx.SP), "=rm" (ctx.FP) ) |
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[381fdee] | 219 | #else |
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| 220 | #error unknown hardware architecture |
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[025278e] | 221 | #endif |
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[78b3f52] | 222 | |
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[5c81105] | 223 | #endif //_INVOKE_PRIVATE_H_ |
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| 224 | #endif //! defined(__CFA_INVOKE_PRIVATE__) |
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[0cf5b79] | 225 | #ifdef __cforall |
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[5c81105] | 226 | } |
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| 227 | #endif |
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[6b0b624] | 228 | |
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| 229 | // Local Variables: // |
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| 230 | // mode: c // |
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| 231 | // tab-width: 4 // |
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| 232 | // End: // |
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