source: libcfa/src/concurrency/invoke.h@ 8d63649

ADT arm-eh ast-experimental cleanup-dtors enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 8d63649 was 212c2187, checked in by tdelisle <tdelisle@…>, 6 years ago

Removed kernelTLS.this_coroutine which was redundant and some preleminary work for breaking into 2 step the context-switch
  • Property mode set to 100644
File size: 7.3 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 : Sat May 19 08:23:21 2018
13// Update Count : 31
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 static inline struct thread_desc * & get_next( struct thread_desc & this );
49 static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this );
50
51 extern thread_local struct KernelThreadData {
52 struct thread_desc * volatile this_thread;
53 struct processor * volatile this_processor;
54
55 struct {
56 volatile unsigned short disable_count;
57 volatile bool enabled;
58 volatile bool in_progress;
59 } preemption_state;
60 } kernelTLS __attribute__ ((tls_model ( "initial-exec" )));
61 }
62 #endif
63
64 struct coStack_t {
65 size_t size; // size of stack
66 void * storage; // pointer to stack
67 void * limit; // stack grows towards stack limit
68 void * base; // base of stack
69 void * context; // address of cfa_context_t
70 void * top; // address of top of storage
71 bool userStack; // whether or not the user allocated the stack
72 };
73
74 enum coroutine_state { Halted, Start, Inactive, Active, Primed };
75
76 struct coroutine_desc {
77 // stack information of the coroutine
78 struct coStack_t stack;
79
80 // textual name for coroutine/task, initialized by uC++ generated code
81 const char * name;
82
83 // copy of global UNIX variable errno
84 int errno_;
85
86 // current execution status for coroutine
87 enum coroutine_state state;
88 // first coroutine to resume this one
89 struct coroutine_desc * starter;
90
91 // last coroutine to resume this one
92 struct coroutine_desc * last;
93
94 // If non-null stack must be unwound with this exception
95 struct _Unwind_Exception * cancellation;
96
97 };
98
99 // struct which calls the monitor is accepting
100 struct __waitfor_mask_t {
101 // the index of the accepted function, -1 if none
102 short * accepted;
103
104 // list of acceptable functions, null if any
105 __cfa_anonymous_object( __small_array_t(struct __acceptable_t) );
106 };
107
108 struct monitor_desc {
109 // spinlock to protect internal data
110 struct __spinlock_t lock;
111
112 // current owner of the monitor
113 struct thread_desc * owner;
114
115 // queue of threads that are blocked waiting for the monitor
116 __queue_t(struct thread_desc) entry_queue;
117
118 // stack of conditions to run next once we exit the monitor
119 __stack_t(struct __condition_criterion_t) signal_stack;
120
121 // monitor routines can be called recursively, we need to keep track of that
122 unsigned int recursion;
123
124 // mask used to know if some thread is waiting for something while holding the monitor
125 struct __waitfor_mask_t mask;
126
127 // node used to signal the dtor in a waitfor dtor
128 struct __condition_node_t * dtor_node;
129 };
130
131 struct __monitor_group_t {
132 // currently held monitors
133 __cfa_anonymous_object( __small_array_t(monitor_desc*) );
134
135 // last function that acquired monitors
136 fptr_t func;
137 };
138
139 struct thread_desc {
140 // Core threading fields
141 // coroutine body used to store context
142 struct coroutine_desc self_cor;
143
144 // current active context
145 struct coroutine_desc * curr_cor;
146
147 // monitor body used for mutual exclusion
148 struct monitor_desc self_mon;
149
150 // pointer to monitor with sufficient lifetime for current monitors
151 struct monitor_desc * self_mon_p;
152
153 // pointer to the cluster on which the thread is running
154 struct cluster * curr_cluster;
155
156 // monitors currently held by this thread
157 struct __monitor_group_t monitors;
158
159 // Link lists fields
160 // instrusive link field for threads
161 struct thread_desc * next;
162
163 struct {
164 struct thread_desc * next;
165 struct thread_desc * prev;
166 } node;
167 };
168
169 #ifdef __cforall
170 extern "Cforall" {
171 static inline struct coroutine_desc * volatile active_coroutine() { return TL_GET( this_thread )->curr_cor; }
172 static inline struct thread_desc * volatile active_thread () { return TL_GET( this_thread ); }
173 static inline struct processor * volatile active_processor() { return TL_GET( this_processor ); } // UNSAFE
174
175 static inline thread_desc * & get_next( thread_desc & this ) {
176 return this.next;
177 }
178
179 static inline [thread_desc *&, thread_desc *& ] __get( thread_desc & this ) {
180 return this.node.[next, prev];
181 }
182
183 static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this );
184
185 static inline void ?{}(__monitor_group_t & this) {
186 (this.data){NULL};
187 (this.size){0};
188 (this.func){NULL};
189 }
190
191 static inline void ?{}(__monitor_group_t & this, struct monitor_desc ** data, __lock_size_t size, fptr_t func) {
192 (this.data){data};
193 (this.size){size};
194 (this.func){func};
195 }
196
197 static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) {
198 if( (lhs.data != 0) != (rhs.data != 0) ) return false;
199 if( lhs.size != rhs.size ) return false;
200 if( lhs.func != rhs.func ) return false;
201
202 // Check that all the monitors match
203 for( int i = 0; i < lhs.size; i++ ) {
204 // If not a match, check next function
205 if( lhs[i] != rhs[i] ) return false;
206 }
207
208 return true;
209 }
210
211 static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) {
212 lhs.data = rhs.data;
213 lhs.size = rhs.size;
214 lhs.func = rhs.func;
215 }
216 }
217 #endif
218
219#endif //_INVOKE_H_
220#else //! defined(__CFA_INVOKE_PRIVATE__)
221#ifndef _INVOKE_PRIVATE_H_
222#define _INVOKE_PRIVATE_H_
223
224 struct machine_context_t {
225 void *SP;
226 void *FP;
227 void *PC;
228 };
229
230 // assembler routines that performs the context switch
231 extern void CtxInvokeStub( void );
232 void CtxSwitch( void * from, void * to ) asm ("CtxSwitch");
233 // void CtxStore ( void * this ) asm ("CtxStore");
234 // void CtxRet ( void * dst ) asm ("CtxRet");
235
236 #if defined( __i386 )
237 #define CtxGet( ctx ) __asm__ ( \
238 "movl %%esp,%0\n" \
239 "movl %%ebp,%1\n" \
240 : "=rm" (ctx.SP), "=rm" (ctx.FP) )
241 #elif defined( __x86_64 )
242 #define CtxGet( ctx ) __asm__ ( \
243 "movq %%rsp,%0\n" \
244 "movq %%rbp,%1\n" \
245 : "=rm" (ctx.SP), "=rm" (ctx.FP) )
246 #elif defined( __ARM_ARCH )
247 #define CtxGet( ctx ) __asm__ ( \
248 "mov %0,%%sp\n" \
249 "mov %1,%%r11\n" \
250 : "=rm" (ctx.SP), "=rm" (ctx.FP) )
251 #else
252 #error unknown hardware architecture
253 #endif
254
255#endif //_INVOKE_PRIVATE_H_
256#endif //! defined(__CFA_INVOKE_PRIVATE__)
257#ifdef __cforall
258}
259#endif
260
261// Local Variables: //
262// mode: c //
263// tab-width: 4 //
264// End: //
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