source: libcfa/src/concurrency/invoke.h@ 57c764c4

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 57c764c4 was 21184e3, checked in by Thierry Delisle <tdelisle@…>, 6 years ago

Added Thread-Local random number generator to kernel which will be needed for the ready-queue
  • Property mode set to 100644
File size: 7.2 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 __attribute__((aligned(128))) 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
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, Inactive, Active, Primed };
95
96 struct coroutine_desc {
97 // context that is switch during a CtxSwitch
98 struct __stack_context_t context;
99
100 // stack information of the coroutine
101 struct __stack_info_t stack;
102
103 // textual name for coroutine/task
104 const char * name;
105
106 // current execution status for coroutine
107 enum coroutine_state state;
108
109 // first coroutine to resume this one
110 struct coroutine_desc * starter;
111
112 // last coroutine to resume this one
113 struct coroutine_desc * last;
114
115 // If non-null stack must be unwound with this exception
116 struct _Unwind_Exception * cancellation;
117
118 };
119
120 // struct which calls the monitor is accepting
121 struct __waitfor_mask_t {
122 // the index of the accepted function, -1 if none
123 short * accepted;
124
125 // list of acceptable functions, null if any
126 __cfa_anonymous_object( __small_array_t(struct __acceptable_t) );
127 };
128
129 struct monitor_desc {
130 // spinlock to protect internal data
131 struct __spinlock_t lock;
132
133 // current owner of the monitor
134 struct thread_desc * owner;
135
136 // queue of threads that are blocked waiting for the monitor
137 __queue_t(struct thread_desc) entry_queue;
138
139 // stack of conditions to run next once we exit the monitor
140 __stack_t(struct __condition_criterion_t) signal_stack;
141
142 // monitor routines can be called recursively, we need to keep track of that
143 unsigned int recursion;
144
145 // mask used to know if some thread is waiting for something while holding the monitor
146 struct __waitfor_mask_t mask;
147
148 // node used to signal the dtor in a waitfor dtor
149 struct __condition_node_t * dtor_node;
150 };
151
152 struct __monitor_group_t {
153 // currently held monitors
154 __cfa_anonymous_object( __small_array_t(monitor_desc*) );
155
156 // last function that acquired monitors
157 fptr_t func;
158 };
159
160 struct thread_desc {
161 // Core threading fields
162 // context that is switch during a CtxSwitch
163 struct __stack_context_t context;
164
165 // current execution status for coroutine
166 enum coroutine_state state;
167
168 //SKULLDUGGERY errno is not save in the thread data structure because returnToKernel appears to be the only function to require saving and restoring it
169
170 // coroutine body used to store context
171 struct coroutine_desc self_cor;
172
173 // current active context
174 struct coroutine_desc * curr_cor;
175
176 // monitor body used for mutual exclusion
177 struct monitor_desc self_mon;
178
179 // pointer to monitor with sufficient lifetime for current monitors
180 struct monitor_desc * self_mon_p;
181
182 // pointer to the cluster on which the thread is running
183 struct cluster * curr_cluster;
184
185 // monitors currently held by this thread
186 struct __monitor_group_t monitors;
187
188 // Link lists fields
189 // instrusive link field for threads
190 struct thread_desc * next;
191
192 struct {
193 struct thread_desc * next;
194 struct thread_desc * prev;
195 } node;
196 };
197
198 #ifdef __cforall
199 extern "Cforall" {
200 static inline thread_desc *& get_next( thread_desc & this ) {
201 return this.next;
202 }
203
204 static inline [thread_desc *&, thread_desc *& ] __get( thread_desc & this ) {
205 return this.node.[next, prev];
206 }
207
208 static inline void ?{}(__monitor_group_t & this) {
209 (this.data){NULL};
210 (this.size){0};
211 (this.func){NULL};
212 }
213
214 static inline void ?{}(__monitor_group_t & this, struct monitor_desc ** data, __lock_size_t size, fptr_t func) {
215 (this.data){data};
216 (this.size){size};
217 (this.func){func};
218 }
219
220 static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) {
221 if( (lhs.data != 0) != (rhs.data != 0) ) return false;
222 if( lhs.size != rhs.size ) return false;
223 if( lhs.func != rhs.func ) return false;
224
225 // Check that all the monitors match
226 for( int i = 0; i < lhs.size; i++ ) {
227 // If not a match, check next function
228 if( lhs[i] != rhs[i] ) return false;
229 }
230
231 return true;
232 }
233
234 static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) {
235 lhs.data = rhs.data;
236 lhs.size = rhs.size;
237 lhs.func = rhs.func;
238 }
239 }
240 #endif
241
242#endif //_INVOKE_H_
243#else //! defined(__CFA_INVOKE_PRIVATE__)
244#ifndef _INVOKE_PRIVATE_H_
245#define _INVOKE_PRIVATE_H_
246
247 struct machine_context_t {
248 void *SP;
249 void *FP;
250 void *PC;
251 };
252
253 // assembler routines that performs the context switch
254 extern void CtxInvokeStub( void );
255 extern void CtxSwitch( struct __stack_context_t * from, struct __stack_context_t * to ) asm ("CtxSwitch");
256 // void CtxStore ( void * this ) asm ("CtxStore");
257 // void CtxRet ( void * dst ) asm ("CtxRet");
258
259#endif //_INVOKE_PRIVATE_H_
260#endif //! defined(__CFA_INVOKE_PRIVATE__)
261#ifdef __cforall
262}
263#endif
264
265// Local Variables: //
266// mode: c //
267// tab-width: 4 //
268// End: //
Note: See TracBrowser for help on using the repository browser.