source: libcfa/src/concurrency/invoke.h@ 0e54654

ADT aaron-thesis 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 0e54654 was 76e069f, checked in by Thierry Delisle <tdelisle@…>, 7 years ago

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