source: libcfa/src/concurrency/invoke.h@ 2a35f14

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 2a35f14 was ae66348, checked in by Thierry Delisle <tdelisle@…>, 6 years ago

Threads in debug now keep track of last function to park/unpark it
  • Property mode set to 100644
File size: 7.8 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
52 struct {
53 volatile unsigned short disable_count;
54 volatile bool enabled;
55 volatile bool in_progress;
56 } preemption_state;
57
58 uint32_t rand_seed;
59 } kernelTLS __attribute__ ((tls_model ( "initial-exec" )));
60 }
61 #endif
62
63 struct __stack_context_t {
64 void * SP;
65 void * FP;
66 };
67
68 // low adresses : +----------------------+ <- start of allocation
69 // | optional guard page |
70 // +----------------------+ <- __stack_t.limit
71 // | |
72 // | /\ /\ /\ |
73 // | || || || |
74 // | |
75 // | program stack |
76 // | |
77 // __stack_info_t.storage -> +----------------------+ <- __stack_t.base
78 // | __stack_t |
79 // high adresses : +----------------------+ <- end of allocation
80
81 struct __stack_t {
82 // stack grows towards stack limit
83 void * limit;
84
85 // base of stack
86 void * base;
87 };
88
89 struct __stack_info_t {
90 // pointer to stack
91 struct __stack_t * storage;
92 };
93
94 enum coroutine_state { Halted, Start, Primed, Inactive, Active, Rerun };
95 enum __Preemption_Reason { __NO_PREEMPTION, __ALARM_PREEMPTION, __POLL_PREEMPTION, __MANUAL_PREEMPTION };
96
97 struct $coroutine {
98 // context that is switch during a __cfactx_switch
99 struct __stack_context_t context;
100
101 // stack information of the coroutine
102 struct __stack_info_t stack;
103
104 // textual name for coroutine/task
105 const char * name;
106
107 // current execution status for coroutine
108 enum coroutine_state state;
109
110 // first coroutine to resume this one
111 struct $coroutine * starter;
112
113 // last coroutine to resume this one
114 struct $coroutine * last;
115
116 // If non-null stack must be unwound with this exception
117 struct _Unwind_Exception * cancellation;
118
119 };
120
121 static inline struct __stack_t * __get_stack( struct $coroutine * cor ) { return (struct __stack_t*)(((uintptr_t)cor->stack.storage) & ((uintptr_t)-2)); }
122
123 // struct which calls the monitor is accepting
124 struct __waitfor_mask_t {
125 // the index of the accepted function, -1 if none
126 short * accepted;
127
128 // list of acceptable functions, null if any
129 __cfa_anonymous_object( __small_array_t(struct __acceptable_t) );
130 };
131
132 struct $monitor {
133 // spinlock to protect internal data
134 struct __spinlock_t lock;
135
136 // current owner of the monitor
137 struct $thread * owner;
138
139 // queue of threads that are blocked waiting for the monitor
140 __queue_t(struct $thread) entry_queue;
141
142 // stack of conditions to run next once we exit the monitor
143 __stack_t(struct __condition_criterion_t) signal_stack;
144
145 // monitor routines can be called recursively, we need to keep track of that
146 unsigned int recursion;
147
148 // mask used to know if some thread is waiting for something while holding the monitor
149 struct __waitfor_mask_t mask;
150
151 // node used to signal the dtor in a waitfor dtor
152 struct __condition_node_t * dtor_node;
153 };
154
155 struct __monitor_group_t {
156 // currently held monitors
157 __cfa_anonymous_object( __small_array_t($monitor*) );
158
159 // last function that acquired monitors
160 fptr_t func;
161 };
162
163 struct $thread {
164 // Core threading fields
165 // context that is switch during a __cfactx_switch
166 struct __stack_context_t context;
167
168 // current execution status for coroutine
169 volatile int state;
170 enum __Preemption_Reason preempted;
171
172 //SKULLDUGGERY errno is not save in the thread data structure because returnToKernel appears to be the only function to require saving and restoring it
173
174 // coroutine body used to store context
175 struct $coroutine self_cor;
176
177 // current active context
178 struct $coroutine * curr_cor;
179
180 // monitor body used for mutual exclusion
181 struct $monitor self_mon;
182
183 // pointer to monitor with sufficient lifetime for current monitors
184 struct $monitor * self_mon_p;
185
186 // pointer to the cluster on which the thread is running
187 struct cluster * curr_cluster;
188
189 // monitors currently held by this thread
190 struct __monitor_group_t monitors;
191
192 // Link lists fields
193 // instrusive link field for threads
194 struct $thread * next;
195
196 struct {
197 struct $thread * next;
198 struct $thread * prev;
199 } node;
200
201 #ifdef __CFA_DEBUG__
202 // previous function to park/unpark the thread
203 const char * prev_park;
204 bool park_stale;
205 const char * prev_unpark;
206 bool unpark_stale;
207 #endif
208 };
209
210 #ifdef __CFA_DEBUG__
211 void __cfaabi_dbg_record_thrd($thread & this, bool park, const char prev_name[]);
212 #else
213 #define __cfaabi_dbg_record_thrd(x, y, z)
214 #endif
215
216 #ifdef __cforall
217 extern "Cforall" {
218 static inline $thread *& get_next( $thread & this ) __attribute__((const)) {
219 return this.next;
220 }
221
222 static inline [$thread *&, $thread *& ] __get( $thread & this ) __attribute__((const)) {
223 return this.node.[next, prev];
224 }
225
226 static inline void ?{}(__monitor_group_t & this) {
227 (this.data){0p};
228 (this.size){0};
229 (this.func){NULL};
230 }
231
232 static inline void ?{}(__monitor_group_t & this, struct $monitor ** data, __lock_size_t size, fptr_t func) {
233 (this.data){data};
234 (this.size){size};
235 (this.func){func};
236 }
237
238 static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) __attribute__((const)) {
239 if( (lhs.data != 0) != (rhs.data != 0) ) return false;
240 if( lhs.size != rhs.size ) return false;
241 if( lhs.func != rhs.func ) return false;
242
243 // Check that all the monitors match
244 for( int i = 0; i < lhs.size; i++ ) {
245 // If not a match, check next function
246 if( lhs[i] != rhs[i] ) return false;
247 }
248
249 return true;
250 }
251
252 static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) {
253 lhs.data = rhs.data;
254 lhs.size = rhs.size;
255 lhs.func = rhs.func;
256 }
257 }
258 #endif
259
260#endif //_INVOKE_H_
261#else //! defined(__CFA_INVOKE_PRIVATE__)
262#ifndef _INVOKE_PRIVATE_H_
263#define _INVOKE_PRIVATE_H_
264
265 struct machine_context_t {
266 void *SP;
267 void *FP;
268 void *PC;
269 };
270
271 // assembler routines that performs the context switch
272 extern void __cfactx_invoke_stub( void );
273 extern void __cfactx_switch( struct __stack_context_t * from, struct __stack_context_t * to ) asm ("__cfactx_switch");
274 // void CtxStore ( void * this ) asm ("CtxStore");
275 // void CtxRet ( void * dst ) asm ("CtxRet");
276
277#endif //_INVOKE_PRIVATE_H_
278#endif //! defined(__CFA_INVOKE_PRIVATE__)
279#ifdef __cforall
280}
281#endif
282
283// Local Variables: //
284// mode: c //
285// tab-width: 4 //
286// End: //
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