source: libcfa/src/concurrency/invoke.h@ c44d652

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since c44d652 was 3e2b9c9, checked in by Thierry Delisle <tdelisle@…>, 5 years ago

More restructuring of translation units
Unclear if it improves compilation time.
  • Property mode set to 100644
File size: 7.0 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// invoke.h --
8//
9// Author : Thierry Delisle
10// Created On : Tue Jan 17 12:27:26 2016
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Thu Dec 5 16:26:03 2019
13// Update Count : 44
14//
15
16#include "bits/containers.hfa"
17#include "bits/defs.hfa"
18#include "bits/locks.hfa"
19#include "kernel/fwd.hfa"
20
21#ifdef __cforall
22extern "C" {
23#endif
24
25#if ! defined(__CFA_INVOKE_PRIVATE__)
26#ifndef _INVOKE_H_
27#define _INVOKE_H_
28
29 struct __stack_context_t {
30 void * SP;
31 void * FP;
32 };
33
34 // low adresses : +----------------------+ <- start of allocation
35 // | optional guard page |
36 // +----------------------+ <- __stack_t.limit
37 // | |
38 // | /\ /\ /\ |
39 // | || || || |
40 // | |
41 // | program stack |
42 // | |
43 // __stack_info_t.storage -> +----------------------+ <- __stack_t.base
44 // | __stack_t |
45 // high adresses : +----------------------+ <- end of allocation
46
47 struct __stack_t {
48 // stack grows towards stack limit
49 void * limit;
50
51 // base of stack
52 void * base;
53 };
54
55 struct __stack_info_t {
56 // pointer to stack
57 struct __stack_t * storage;
58 };
59
60 enum __Coroutine_State { Halted, Start, Primed, Blocked, Ready, Active };
61
62 struct $coroutine {
63 // context that is switch during a __cfactx_switch
64 struct __stack_context_t context;
65
66 // stack information of the coroutine
67 struct __stack_info_t stack;
68
69 // textual name for coroutine/task
70 const char * name;
71
72 // current execution status for coroutine
73 enum __Coroutine_State state;
74
75 // first coroutine to resume this one
76 struct $coroutine * starter;
77
78 // last coroutine to resume this one
79 struct $coroutine * last;
80
81 // If non-null stack must be unwound with this exception
82 struct _Unwind_Exception * cancellation;
83
84 };
85
86 static inline struct __stack_t * __get_stack( struct $coroutine * cor ) { return (struct __stack_t*)(((uintptr_t)cor->stack.storage) & ((uintptr_t)-2)); }
87
88 // struct which calls the monitor is accepting
89 struct __waitfor_mask_t {
90 // the index of the accepted function, -1 if none
91 short * accepted;
92
93 // list of acceptable functions, null if any
94 __cfa_anonymous_object( __small_array_t(struct __acceptable_t) );
95 };
96
97 struct $monitor {
98 // spinlock to protect internal data
99 struct __spinlock_t lock;
100
101 // current owner of the monitor
102 struct $thread * owner;
103
104 // queue of threads that are blocked waiting for the monitor
105 __queue_t(struct $thread) entry_queue;
106
107 // stack of conditions to run next once we exit the monitor
108 __stack_t(struct __condition_criterion_t) signal_stack;
109
110 // monitor routines can be called recursively, we need to keep track of that
111 unsigned int recursion;
112
113 // mask used to know if some thread is waiting for something while holding the monitor
114 struct __waitfor_mask_t mask;
115
116 // node used to signal the dtor in a waitfor dtor
117 struct __condition_node_t * dtor_node;
118 };
119
120 struct __monitor_group_t {
121 // currently held monitors
122 __cfa_anonymous_object( __small_array_t($monitor*) );
123
124 // last function that acquired monitors
125 fptr_t func;
126 };
127
128 // Link lists fields
129 // instrusive link field for threads
130 struct __thread_desc_link {
131 struct $thread * next;
132 struct $thread * prev;
133 volatile unsigned long long ts;
134 int preferred;
135 };
136
137 struct $thread {
138 // Core threading fields
139 // context that is switch during a __cfactx_switch
140 struct __stack_context_t context;
141
142 // current execution status for coroutine
143 volatile int ticket;
144 enum __Coroutine_State state:8;
145 enum __Preemption_Reason preempted:8;
146
147 //SKULLDUGGERY errno is not save in the thread data structure because returnToKernel appears to be the only function to require saving and restoring it
148
149 // pointer to the cluster on which the thread is running
150 struct cluster * curr_cluster;
151
152 // Link lists fields
153 // instrusive link field for threads
154 struct __thread_desc_link link;
155
156 // coroutine body used to store context
157 struct $coroutine self_cor;
158
159 // current active context
160 struct $coroutine * curr_cor;
161
162 // monitor body used for mutual exclusion
163 struct $monitor self_mon;
164
165 // pointer to monitor with sufficient lifetime for current monitors
166 struct $monitor * self_mon_p;
167
168 // monitors currently held by this thread
169 struct __monitor_group_t monitors;
170
171 struct {
172 struct $thread * next;
173 struct $thread * prev;
174 } node;
175
176 #ifdef __CFA_DEBUG__
177 // previous function to park/unpark the thread
178 const char * park_caller;
179 int park_result;
180 enum __Coroutine_State park_state;
181 bool park_stale;
182 const char * unpark_caller;
183 int unpark_result;
184 enum __Coroutine_State unpark_state;
185 bool unpark_stale;
186 #endif
187 };
188
189 #ifdef __CFA_DEBUG__
190 void __cfaabi_dbg_record_thrd($thread & this, bool park, const char prev_name[]);
191 #else
192 #define __cfaabi_dbg_record_thrd(x, y, z)
193 #endif
194
195 #ifdef __cforall
196 extern "Cforall" {
197
198 static inline $thread *& get_next( $thread & this ) __attribute__((const)) {
199 return this.link.next;
200 }
201
202 static inline [$thread *&, $thread *& ] __get( $thread & this ) __attribute__((const)) {
203 return this.node.[next, prev];
204 }
205
206 static inline void ?{}(__monitor_group_t & this) {
207 (this.data){0p};
208 (this.size){0};
209 (this.func){NULL};
210 }
211
212 static inline void ?{}(__monitor_group_t & this, struct $monitor ** data, __lock_size_t size, fptr_t func) {
213 (this.data){data};
214 (this.size){size};
215 (this.func){func};
216 }
217
218 static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) __attribute__((const)) {
219 if( (lhs.data != 0) != (rhs.data != 0) ) return false;
220 if( lhs.size != rhs.size ) return false;
221 if( lhs.func != rhs.func ) return false;
222
223 // Check that all the monitors match
224 for( int i = 0; i < lhs.size; i++ ) {
225 // If not a match, check next function
226 if( lhs[i] != rhs[i] ) return false;
227 }
228
229 return true;
230 }
231
232 static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) {
233 lhs.data = rhs.data;
234 lhs.size = rhs.size;
235 lhs.func = rhs.func;
236 }
237 }
238 #endif
239
240#endif //_INVOKE_H_
241#else //! defined(__CFA_INVOKE_PRIVATE__)
242#ifndef _INVOKE_PRIVATE_H_
243#define _INVOKE_PRIVATE_H_
244
245 struct machine_context_t {
246 void *SP;
247 void *FP;
248 void *PC;
249 };
250
251 // assembler routines that performs the context switch
252 extern void __cfactx_invoke_stub( void );
253 extern void __cfactx_switch( struct __stack_context_t * from, struct __stack_context_t * to ) asm ("__cfactx_switch");
254 // void CtxStore ( void * this ) asm ("CtxStore");
255 // void CtxRet ( void * dst ) asm ("CtxRet");
256
257#endif //_INVOKE_PRIVATE_H_
258#endif //! defined(__CFA_INVOKE_PRIVATE__)
259#ifdef __cforall
260}
261#endif
262
263// Local Variables: //
264// mode: c //
265// tab-width: 4 //
266// End: //
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