source: libcfa/src/concurrency/invoke.h@ 527acfc

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 527acfc was 7812a7b5, checked in by Thierry Delisle <tdelisle@…>, 5 years ago

Fixed errors and warning with x86 build
  • Property mode set to 100644
File size: 8.3 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
20#ifdef __cforall
21extern "C" {
22#endif
23
24#if ! defined(__CFA_INVOKE_PRIVATE__)
25#ifndef _INVOKE_H_
26#define _INVOKE_H_
27
28#ifdef __ARM_ARCH
29 // function prototypes are only really used by these macros on ARM
30 void disable_global_interrupts();
31 void enable_global_interrupts();
32
33 #define TL_GET( member ) ( { __typeof__( kernelTLS.member ) target; \
34 disable_global_interrupts(); \
35 target = kernelTLS.member; \
36 enable_global_interrupts(); \
37 target; } )
38 #define TL_SET( member, value ) disable_global_interrupts(); \
39 kernelTLS.member = value; \
40 enable_global_interrupts();
41#else
42 #define TL_GET( member ) kernelTLS.member
43 #define TL_SET( member, value ) kernelTLS.member = value;
44#endif
45
46 #ifdef __cforall
47 extern "Cforall" {
48 extern __attribute__((aligned(128))) thread_local struct KernelThreadData {
49 struct $thread * volatile this_thread;
50 struct processor * volatile this_processor;
51 struct __stats_t * volatile this_stats;
52
53 struct {
54 volatile unsigned short disable_count;
55 volatile bool enabled;
56 volatile bool in_progress;
57 } preemption_state;
58
59 #if defined(__SIZEOF_INT128__)
60 __uint128_t rand_seed;
61 #else
62 uint64_t rand_seed;
63 #endif
64 } kernelTLS __attribute__ ((tls_model ( "initial-exec" )));
65 }
66 #endif
67
68 struct __stack_context_t {
69 void * SP;
70 void * FP;
71 };
72
73 // low adresses : +----------------------+ <- start of allocation
74 // | optional guard page |
75 // +----------------------+ <- __stack_t.limit
76 // | |
77 // | /\ /\ /\ |
78 // | || || || |
79 // | |
80 // | program stack |
81 // | |
82 // __stack_info_t.storage -> +----------------------+ <- __stack_t.base
83 // | __stack_t |
84 // high adresses : +----------------------+ <- end of allocation
85
86 struct __stack_t {
87 // stack grows towards stack limit
88 void * limit;
89
90 // base of stack
91 void * base;
92 };
93
94 struct __stack_info_t {
95 // pointer to stack
96 struct __stack_t * storage;
97 };
98
99 enum __Coroutine_State { Halted, Start, Primed, Blocked, Ready, Active };
100 enum __Preemption_Reason { __NO_PREEMPTION, __ALARM_PREEMPTION, __POLL_PREEMPTION, __MANUAL_PREEMPTION };
101
102 struct $coroutine {
103 // context that is switch during a __cfactx_switch
104 struct __stack_context_t context;
105
106 // stack information of the coroutine
107 struct __stack_info_t stack;
108
109 // textual name for coroutine/task
110 const char * name;
111
112 // current execution status for coroutine
113 enum __Coroutine_State state;
114
115 // first coroutine to resume this one
116 struct $coroutine * starter;
117
118 // last coroutine to resume this one
119 struct $coroutine * last;
120
121 // If non-null stack must be unwound with this exception
122 struct _Unwind_Exception * cancellation;
123
124 };
125
126 static inline struct __stack_t * __get_stack( struct $coroutine * cor ) { return (struct __stack_t*)(((uintptr_t)cor->stack.storage) & ((uintptr_t)-2)); }
127
128 // struct which calls the monitor is accepting
129 struct __waitfor_mask_t {
130 // the index of the accepted function, -1 if none
131 short * accepted;
132
133 // list of acceptable functions, null if any
134 __cfa_anonymous_object( __small_array_t(struct __acceptable_t) );
135 };
136
137 struct $monitor {
138 // spinlock to protect internal data
139 struct __spinlock_t lock;
140
141 // current owner of the monitor
142 struct $thread * owner;
143
144 // queue of threads that are blocked waiting for the monitor
145 __queue_t(struct $thread) entry_queue;
146
147 // stack of conditions to run next once we exit the monitor
148 __stack_t(struct __condition_criterion_t) signal_stack;
149
150 // monitor routines can be called recursively, we need to keep track of that
151 unsigned int recursion;
152
153 // mask used to know if some thread is waiting for something while holding the monitor
154 struct __waitfor_mask_t mask;
155
156 // node used to signal the dtor in a waitfor dtor
157 struct __condition_node_t * dtor_node;
158 };
159
160 struct __monitor_group_t {
161 // currently held monitors
162 __cfa_anonymous_object( __small_array_t($monitor*) );
163
164 // last function that acquired monitors
165 fptr_t func;
166 };
167
168 // Link lists fields
169 // instrusive link field for threads
170 struct __thread_desc_link {
171 struct $thread * next;
172 struct $thread * prev;
173 volatile unsigned long long ts;
174 int preferred;
175 };
176
177 struct $thread {
178 // Core threading fields
179 // context that is switch during a __cfactx_switch
180 struct __stack_context_t context;
181
182 // current execution status for coroutine
183 volatile int ticket;
184 enum __Coroutine_State state:8;
185 enum __Preemption_Reason preempted:8;
186
187 //SKULLDUGGERY errno is not save in the thread data structure because returnToKernel appears to be the only function to require saving and restoring it
188
189 // pointer to the cluster on which the thread is running
190 struct cluster * curr_cluster;
191
192 // Link lists fields
193 // instrusive link field for threads
194 struct __thread_desc_link link;
195
196 // coroutine body used to store context
197 struct $coroutine self_cor;
198
199 // current active context
200 struct $coroutine * curr_cor;
201
202 // monitor body used for mutual exclusion
203 struct $monitor self_mon;
204
205 // pointer to monitor with sufficient lifetime for current monitors
206 struct $monitor * self_mon_p;
207
208 // monitors currently held by this thread
209 struct __monitor_group_t monitors;
210
211 struct {
212 struct $thread * next;
213 struct $thread * prev;
214 } node;
215
216 #ifdef __CFA_DEBUG__
217 // previous function to park/unpark the thread
218 const char * park_caller;
219 int park_result;
220 enum __Coroutine_State park_state;
221 bool park_stale;
222 const char * unpark_caller;
223 int unpark_result;
224 enum __Coroutine_State unpark_state;
225 bool unpark_stale;
226 #endif
227 };
228
229 #ifdef __CFA_DEBUG__
230 void __cfaabi_dbg_record_thrd($thread & this, bool park, const char prev_name[]);
231 #else
232 #define __cfaabi_dbg_record_thrd(x, y, z)
233 #endif
234
235 #ifdef __cforall
236 extern "Cforall" {
237
238 static inline $thread *& get_next( $thread & this ) __attribute__((const)) {
239 return this.link.next;
240 }
241
242 static inline [$thread *&, $thread *& ] __get( $thread & this ) __attribute__((const)) {
243 return this.node.[next, prev];
244 }
245
246 static inline void ?{}(__monitor_group_t & this) {
247 (this.data){0p};
248 (this.size){0};
249 (this.func){NULL};
250 }
251
252 static inline void ?{}(__monitor_group_t & this, struct $monitor ** data, __lock_size_t size, fptr_t func) {
253 (this.data){data};
254 (this.size){size};
255 (this.func){func};
256 }
257
258 static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) __attribute__((const)) {
259 if( (lhs.data != 0) != (rhs.data != 0) ) return false;
260 if( lhs.size != rhs.size ) return false;
261 if( lhs.func != rhs.func ) return false;
262
263 // Check that all the monitors match
264 for( int i = 0; i < lhs.size; i++ ) {
265 // If not a match, check next function
266 if( lhs[i] != rhs[i] ) return false;
267 }
268
269 return true;
270 }
271
272 static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) {
273 lhs.data = rhs.data;
274 lhs.size = rhs.size;
275 lhs.func = rhs.func;
276 }
277 }
278 #endif
279
280#endif //_INVOKE_H_
281#else //! defined(__CFA_INVOKE_PRIVATE__)
282#ifndef _INVOKE_PRIVATE_H_
283#define _INVOKE_PRIVATE_H_
284
285 struct machine_context_t {
286 void *SP;
287 void *FP;
288 void *PC;
289 };
290
291 // assembler routines that performs the context switch
292 extern void __cfactx_invoke_stub( void );
293 extern void __cfactx_switch( struct __stack_context_t * from, struct __stack_context_t * to ) asm ("__cfactx_switch");
294 // void CtxStore ( void * this ) asm ("CtxStore");
295 // void CtxRet ( void * dst ) asm ("CtxRet");
296
297#endif //_INVOKE_PRIVATE_H_
298#endif //! defined(__CFA_INVOKE_PRIVATE__)
299#ifdef __cforall
300}
301#endif
302
303// Local Variables: //
304// mode: c //
305// tab-width: 4 //
306// End: //
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