source: libcfa/src/concurrency/invoke.h@ 6887a99

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 6887a99 was 3623f9d, checked in by Thierry Delisle <tdelisle@…>, 6 years ago

Fixed warning in libcfa
  • Property mode set to 100644
File size: 7.1 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 : Sat Jun 22 18:19:13 2019
13// Update Count : 40
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 thread_local struct KernelThreadData {
49 struct thread_desc * 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 } kernelTLS __attribute__ ((tls_model ( "initial-exec" )));
58 }
59 #endif
60
61 struct __stack_context_t {
62 void * SP;
63 void * FP;
64 };
65
66 // low adresses : +----------------------+ <- start of allocation
67 // | optional guard page |
68 // +----------------------+ <- __stack_t.limit
69 // | |
70 // | /\ /\ /\ |
71 // | || || || |
72 // | |
73 // | program stack |
74 // | |
75 // __stack_info_t.storage -> +----------------------+ <- __stack_t.base
76 // | __stack_t |
77 // high adresses : +----------------------+ <- end of allocation
78
79 struct __stack_t {
80 // stack grows towards stack limit
81 void * limit;
82
83 // base of stack
84 void * base;
85 };
86
87 struct __stack_info_t {
88 // pointer to stack
89 struct __stack_t * storage;
90 };
91
92 enum coroutine_state { Halted, Start, Inactive, Active, Primed };
93
94 struct coroutine_desc {
95 // context that is switch during a CtxSwitch
96 struct __stack_context_t context;
97
98 // stack information of the coroutine
99 struct __stack_info_t stack;
100
101 // textual name for coroutine/task
102 const char * name;
103
104 // current execution status for coroutine
105 enum coroutine_state state;
106
107 // first coroutine to resume this one
108 struct coroutine_desc * starter;
109
110 // last coroutine to resume this one
111 struct coroutine_desc * last;
112
113 // If non-null stack must be unwound with this exception
114 struct _Unwind_Exception * cancellation;
115
116 };
117
118 // struct which calls the monitor is accepting
119 struct __waitfor_mask_t {
120 // the index of the accepted function, -1 if none
121 short * accepted;
122
123 // list of acceptable functions, null if any
124 __cfa_anonymous_object( __small_array_t(struct __acceptable_t) );
125 };
126
127 struct monitor_desc {
128 // spinlock to protect internal data
129 struct __spinlock_t lock;
130
131 // current owner of the monitor
132 struct thread_desc * owner;
133
134 // queue of threads that are blocked waiting for the monitor
135 __queue_t(struct thread_desc) entry_queue;
136
137 // stack of conditions to run next once we exit the monitor
138 __stack_t(struct __condition_criterion_t) signal_stack;
139
140 // monitor routines can be called recursively, we need to keep track of that
141 unsigned int recursion;
142
143 // mask used to know if some thread is waiting for something while holding the monitor
144 struct __waitfor_mask_t mask;
145
146 // node used to signal the dtor in a waitfor dtor
147 struct __condition_node_t * dtor_node;
148 };
149
150 struct __monitor_group_t {
151 // currently held monitors
152 __cfa_anonymous_object( __small_array_t(monitor_desc*) );
153
154 // last function that acquired monitors
155 fptr_t func;
156 };
157
158 struct thread_desc {
159 // Core threading fields
160 // context that is switch during a CtxSwitch
161 struct __stack_context_t context;
162
163 // current execution status for coroutine
164 enum coroutine_state state;
165
166 //SKULLDUGGERY errno is not save in the thread data structure because returnToKernel appears to be the only function to require saving and restoring it
167
168 // coroutine body used to store context
169 struct coroutine_desc self_cor;
170
171 // current active context
172 struct coroutine_desc * curr_cor;
173
174 // monitor body used for mutual exclusion
175 struct monitor_desc self_mon;
176
177 // pointer to monitor with sufficient lifetime for current monitors
178 struct monitor_desc * self_mon_p;
179
180 // pointer to the cluster on which the thread is running
181 struct cluster * curr_cluster;
182
183 // monitors currently held by this thread
184 struct __monitor_group_t monitors;
185
186 // Link lists fields
187 // instrusive link field for threads
188 struct thread_desc * next;
189
190 struct {
191 struct thread_desc * next;
192 struct thread_desc * prev;
193 } node;
194 };
195
196 #ifdef __cforall
197 extern "Cforall" {
198 static inline thread_desc *& get_next( thread_desc & this ) {
199 return this.next;
200 }
201
202 static inline [thread_desc *&, thread_desc *& ] __get( thread_desc & this ) {
203 return this.node.[next, prev];
204 }
205
206 static inline void ?{}(__monitor_group_t & this) {
207 (this.data){NULL};
208 (this.size){0};
209 (this.func){NULL};
210 }
211
212 static inline void ?{}(__monitor_group_t & this, struct monitor_desc ** 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 ) {
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 CtxInvokeStub( void );
253 extern void CtxSwitch( struct __stack_context_t * from, struct __stack_context_t * to ) asm ("CtxSwitch");
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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