[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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[597c34a3] | 12 | // Last Modified On : Sat May 19 08:23:21 2018 |
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| 13 | // Update Count : 31 |
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[8def349] | 14 | // |
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| 15 | |
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[73abe95] | 16 | #include "bits/containers.hfa" |
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| 17 | #include "bits/defs.hfa" |
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| 18 | #include "bits/locks.hfa" |
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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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[597c34a3] | 28 | #ifdef __ARM_ARCH |
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| 29 | // function prototypes are only really used by these macros on ARM |
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| 30 | void disable_global_interrupts(); |
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| 31 | void enable_global_interrupts(); |
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| 32 | |
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| 33 | #define TL_GET( member ) ( { __typeof__( kernelTLS.member ) target; \ |
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| 34 | disable_global_interrupts(); \ |
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| 35 | target = kernelTLS.member; \ |
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| 36 | enable_global_interrupts(); \ |
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| 37 | target; } ) |
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| 38 | #define TL_SET( member, value ) disable_global_interrupts(); \ |
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| 39 | kernelTLS.member = value; \ |
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| 40 | enable_global_interrupts(); |
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| 41 | #else |
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| 42 | #define TL_GET( member ) kernelTLS.member |
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| 43 | #define TL_SET( member, value ) kernelTLS.member = value; |
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| 44 | #endif |
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| 45 | |
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[0cf5b79] | 46 | #ifdef __cforall |
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[025278e] | 47 | extern "Cforall" { |
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[0cf5b79] | 48 | static inline struct thread_desc * & get_next( struct thread_desc & this ); |
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| 49 | static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this ); |
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[b10affd] | 50 | |
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| 51 | extern thread_local struct KernelThreadData { |
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| 52 | struct coroutine_desc * volatile this_coroutine; |
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| 53 | struct thread_desc * volatile this_thread; |
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| 54 | struct processor * volatile this_processor; |
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| 55 | |
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| 56 | struct { |
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| 57 | volatile unsigned short disable_count; |
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| 58 | volatile bool enabled; |
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| 59 | volatile bool in_progress; |
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| 60 | } preemption_state; |
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[14a61b5] | 61 | } kernelTLS; |
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[025278e] | 62 | } |
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| 63 | |
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[b10affd] | 64 | static inline struct coroutine_desc * volatile active_coroutine() { return TL_GET( this_coroutine ); } |
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[14a61b5] | 65 | static inline struct thread_desc * volatile active_thread () { return TL_GET( this_thread ); } |
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[afd550c] | 66 | static inline struct processor * volatile active_processor() { return TL_GET( this_processor ); } // UNSAFE |
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[4c1b48f3] | 67 | #endif |
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[025278e] | 68 | |
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[b10affd] | 69 | struct coStack_t { |
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| 70 | size_t size; // size of stack |
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| 71 | void * storage; // pointer to stack |
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| 72 | void * limit; // stack grows towards stack limit |
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| 73 | void * base; // base of stack |
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| 74 | void * context; // address of cfa_context_t |
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| 75 | void * top; // address of top of storage |
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| 76 | bool userStack; // whether or not the user allocated the stack |
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[025278e] | 77 | }; |
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| 78 | |
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| 79 | enum coroutine_state { Halted, Start, Inactive, Active, Primed }; |
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| 80 | |
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| 81 | struct coroutine_desc { |
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[b10affd] | 82 | struct coStack_t stack; // stack information of the coroutine |
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| 83 | const char * name; // textual name for coroutine/task, initialized by uC++ generated code |
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| 84 | int errno_; // copy of global UNIX variable errno |
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| 85 | enum coroutine_state state; // current execution status for coroutine |
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| 86 | struct coroutine_desc * starter; // first coroutine to resume this one |
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| 87 | struct coroutine_desc * last; // last coroutine to resume this one |
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[025278e] | 88 | }; |
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| 89 | |
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| 90 | struct __waitfor_mask_t { |
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| 91 | // the index of the accepted function, -1 if none |
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| 92 | short * accepted; |
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| 93 | |
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| 94 | // list of acceptable functions, null if any |
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[b1672e1] | 95 | __cfa_anonymous_object( __small_array_t(struct __acceptable_t) ); |
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[025278e] | 96 | }; |
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| 97 | |
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| 98 | struct monitor_desc { |
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| 99 | // spinlock to protect internal data |
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[ea7d2b0] | 100 | struct __spinlock_t lock; |
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[025278e] | 101 | |
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| 102 | // current owner of the monitor |
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| 103 | struct thread_desc * owner; |
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| 104 | |
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| 105 | // queue of threads that are blocked waiting for the monitor |
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[0cf5b79] | 106 | __queue_t(struct thread_desc) entry_queue; |
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[025278e] | 107 | |
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| 108 | // stack of conditions to run next once we exit the monitor |
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[0cf5b79] | 109 | __stack_t(struct __condition_criterion_t) signal_stack; |
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[025278e] | 110 | |
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| 111 | // monitor routines can be called recursively, we need to keep track of that |
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| 112 | unsigned int recursion; |
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| 113 | |
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| 114 | // mask used to know if some thread is waiting for something while holding the monitor |
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| 115 | struct __waitfor_mask_t mask; |
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| 116 | |
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| 117 | // node used to signal the dtor in a waitfor dtor |
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| 118 | struct __condition_node_t * dtor_node; |
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| 119 | }; |
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| 120 | |
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| 121 | struct __monitor_group_t { |
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| 122 | // currently held monitors |
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[b1672e1] | 123 | __cfa_anonymous_object( __small_array_t(monitor_desc*) ); |
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[025278e] | 124 | |
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| 125 | // last function that acquired monitors |
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[c1a9c86] | 126 | fptr_t func; |
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[025278e] | 127 | }; |
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| 128 | |
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| 129 | struct thread_desc { |
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| 130 | // Core threading fields |
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| 131 | // coroutine body used to store context |
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| 132 | struct coroutine_desc self_cor; |
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| 133 | |
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[82c948c] | 134 | // current active context |
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| 135 | struct coroutine_desc * curr_cor; |
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| 136 | |
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[025278e] | 137 | // monitor body used for mutual exclusion |
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| 138 | struct monitor_desc self_mon; |
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| 139 | |
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| 140 | // pointer to monitor with sufficient lifetime for current monitors |
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| 141 | struct monitor_desc * self_mon_p; |
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| 142 | |
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[de6319f] | 143 | // pointer to the cluster on which the thread is running |
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| 144 | struct cluster * curr_cluster; |
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| 145 | |
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[025278e] | 146 | // monitors currently held by this thread |
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| 147 | struct __monitor_group_t monitors; |
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| 148 | |
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| 149 | // Link lists fields |
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| 150 | // instrusive link field for threads |
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| 151 | struct thread_desc * next; |
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[f7d6bb0] | 152 | |
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[de94a60] | 153 | struct { |
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| 154 | struct thread_desc * next; |
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| 155 | struct thread_desc * prev; |
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| 156 | } node; |
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[97e3296] | 157 | }; |
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[8118303] | 158 | |
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[0cf5b79] | 159 | #ifdef __cforall |
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[b18830e] | 160 | extern "Cforall" { |
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[0cf5b79] | 161 | static inline thread_desc * & get_next( thread_desc & this ) { |
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| 162 | return this.next; |
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| 163 | } |
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| 164 | |
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[de94a60] | 165 | static inline [thread_desc *&, thread_desc *& ] __get( thread_desc & this ) { |
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| 166 | return this.node.[next, prev]; |
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| 167 | } |
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| 168 | |
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[0cf5b79] | 169 | static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this ); |
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| 170 | |
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| 171 | static inline void ?{}(__monitor_group_t & this) { |
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| 172 | (this.data){NULL}; |
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| 173 | (this.size){0}; |
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| 174 | (this.func){NULL}; |
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| 175 | } |
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| 176 | |
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| 177 | static inline void ?{}(__monitor_group_t & this, struct monitor_desc ** data, __lock_size_t size, fptr_t func) { |
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| 178 | (this.data){data}; |
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| 179 | (this.size){size}; |
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| 180 | (this.func){func}; |
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[025278e] | 181 | } |
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| 182 | |
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| 183 | static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) { |
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[0cf5b79] | 184 | if( (lhs.data != 0) != (rhs.data != 0) ) return false; |
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[025278e] | 185 | if( lhs.size != rhs.size ) return false; |
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| 186 | if( lhs.func != rhs.func ) return false; |
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| 187 | |
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| 188 | // Check that all the monitors match |
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| 189 | for( int i = 0; i < lhs.size; i++ ) { |
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| 190 | // If not a match, check next function |
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| 191 | if( lhs[i] != rhs[i] ) return false; |
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| 192 | } |
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| 193 | |
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| 194 | return true; |
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| 195 | } |
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[0cf5b79] | 196 | |
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| 197 | static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) { |
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| 198 | lhs.data = rhs.data; |
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| 199 | lhs.size = rhs.size; |
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| 200 | lhs.func = rhs.func; |
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| 201 | } |
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[025278e] | 202 | } |
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| 203 | #endif |
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[b18830e] | 204 | |
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[5c81105] | 205 | #endif //_INVOKE_H_ |
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| 206 | #else //! defined(__CFA_INVOKE_PRIVATE__) |
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| 207 | #ifndef _INVOKE_PRIVATE_H_ |
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| 208 | #define _INVOKE_PRIVATE_H_ |
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[b227f68] | 209 | |
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[025278e] | 210 | struct machine_context_t { |
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| 211 | void *SP; |
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| 212 | void *FP; |
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| 213 | void *PC; |
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| 214 | }; |
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| 215 | |
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| 216 | // assembler routines that performs the context switch |
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| 217 | extern void CtxInvokeStub( void ); |
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| 218 | void CtxSwitch( void * from, void * to ) asm ("CtxSwitch"); |
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| 219 | |
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[381fdee] | 220 | #if defined( __i386 ) |
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[025278e] | 221 | #define CtxGet( ctx ) __asm__ ( \ |
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| 222 | "movl %%esp,%0\n" \ |
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| 223 | "movl %%ebp,%1\n" \ |
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| 224 | : "=rm" (ctx.SP), "=rm" (ctx.FP) ) |
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[381fdee] | 225 | #elif defined( __x86_64 ) |
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| 226 | #define CtxGet( ctx ) __asm__ ( \ |
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| 227 | "movq %%rsp,%0\n" \ |
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| 228 | "movq %%rbp,%1\n" \ |
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| 229 | : "=rm" (ctx.SP), "=rm" (ctx.FP) ) |
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[b158d8f] | 230 | #elif defined( __ARM_ARCH ) |
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| 231 | #define CtxGet( ctx ) __asm__ ( \ |
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| 232 | "mov %0,%%sp\n" \ |
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| 233 | "mov %1,%%r11\n" \ |
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| 234 | : "=rm" (ctx.SP), "=rm" (ctx.FP) ) |
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[381fdee] | 235 | #else |
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| 236 | #error unknown hardware architecture |
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[025278e] | 237 | #endif |
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[78b3f52] | 238 | |
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[5c81105] | 239 | #endif //_INVOKE_PRIVATE_H_ |
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| 240 | #endif //! defined(__CFA_INVOKE_PRIVATE__) |
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[0cf5b79] | 241 | #ifdef __cforall |
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[5c81105] | 242 | } |
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| 243 | #endif |
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[6b0b624] | 244 | |
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| 245 | // Local Variables: // |
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| 246 | // mode: c // |
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| 247 | // tab-width: 4 // |
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| 248 | // End: // |
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