source: src/libcfa/concurrency/invoke.h@ 0c674e8

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum with_gc
Last change on this file since 0c674e8 was de94a60, checked in by Thierry Delisle <tdelisle@…>, 7 years ago

some more work on kernel doubly linked lists and fixed segfault in abort message
  • Property mode set to 100644
File size: 6.5 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 : Fri Mar 30 22:33:59 2018
13// Update Count : 30
14//
15
16#include "bits/containers.h"
17#include "bits/defs.h"
18#include "bits/locks.h"
19
20#define TL_GET( member ) kernelTLS.member
21#define TL_SET( member, value ) kernelTLS.member = value;
22
23#ifdef __cforall
24extern "C" {
25#endif
26
27#if ! defined(__CFA_INVOKE_PRIVATE__)
28#ifndef _INVOKE_H_
29#define _INVOKE_H_
30
31 #ifdef __cforall
32 extern "Cforall" {
33 static inline struct thread_desc * & get_next( struct thread_desc & this );
34 static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this );
35
36 extern thread_local struct KernelThreadData {
37 struct coroutine_desc * volatile this_coroutine;
38 struct thread_desc * volatile this_thread;
39 struct processor * volatile this_processor;
40
41 struct {
42 volatile unsigned short disable_count;
43 volatile bool enabled;
44 volatile bool in_progress;
45 } preemption_state;
46 } kernelTLS;
47 }
48
49 static inline struct coroutine_desc * volatile active_coroutine() { return TL_GET( this_coroutine ); }
50 static inline struct thread_desc * volatile active_thread () { return TL_GET( this_thread ); }
51 static inline struct processor * volatile active_processor() { return TL_GET( this_processor ); } // UNSAFE
52 #endif
53
54 struct coStack_t {
55 size_t size; // size of stack
56 void * storage; // pointer to stack
57 void * limit; // stack grows towards stack limit
58 void * base; // base of stack
59 void * context; // address of cfa_context_t
60 void * top; // address of top of storage
61 bool userStack; // whether or not the user allocated the stack
62 };
63
64 enum coroutine_state { Halted, Start, Inactive, Active, Primed };
65
66 struct coroutine_desc {
67 struct coStack_t stack; // stack information of the coroutine
68 const char * name; // textual name for coroutine/task, initialized by uC++ generated code
69 int errno_; // copy of global UNIX variable errno
70 enum coroutine_state state; // current execution status for coroutine
71 struct coroutine_desc * starter; // first coroutine to resume this one
72 struct coroutine_desc * last; // last coroutine to resume this one
73 };
74
75 struct __waitfor_mask_t {
76 // the index of the accepted function, -1 if none
77 short * accepted;
78
79 // list of acceptable functions, null if any
80 __small_array_t(struct __acceptable_t) __cfa_anonymous_object;
81 };
82
83 struct monitor_desc {
84 // spinlock to protect internal data
85 struct __spinlock_t lock;
86
87 // current owner of the monitor
88 struct thread_desc * owner;
89
90 // queue of threads that are blocked waiting for the monitor
91 __queue_t(struct thread_desc) entry_queue;
92
93 // stack of conditions to run next once we exit the monitor
94 __stack_t(struct __condition_criterion_t) signal_stack;
95
96 // monitor routines can be called recursively, we need to keep track of that
97 unsigned int recursion;
98
99 // mask used to know if some thread is waiting for something while holding the monitor
100 struct __waitfor_mask_t mask;
101
102 // node used to signal the dtor in a waitfor dtor
103 struct __condition_node_t * dtor_node;
104 };
105
106 struct __monitor_group_t {
107 // currently held monitors
108 __small_array_t(monitor_desc*) __cfa_anonymous_object;
109
110 // last function that acquired monitors
111 fptr_t func;
112 };
113
114 struct thread_desc {
115 // Core threading fields
116 // coroutine body used to store context
117 struct coroutine_desc self_cor;
118
119 // current active context
120 struct coroutine_desc * curr_cor;
121
122 // monitor body used for mutual exclusion
123 struct monitor_desc self_mon;
124
125 // pointer to monitor with sufficient lifetime for current monitors
126 struct monitor_desc * self_mon_p;
127
128 // pointer to the cluster on which the thread is running
129 struct cluster * curr_cluster;
130
131 // monitors currently held by this thread
132 struct __monitor_group_t monitors;
133
134 // Link lists fields
135 // instrusive link field for threads
136 struct thread_desc * next;
137
138 struct {
139 struct thread_desc * next;
140 struct thread_desc * prev;
141 } node;
142 };
143
144 #ifdef __cforall
145 extern "Cforall" {
146 static inline thread_desc * & get_next( thread_desc & this ) {
147 return this.next;
148 }
149
150 static inline [thread_desc *&, thread_desc *& ] __get( thread_desc & this ) {
151 return this.node.[next, prev];
152 }
153
154 static inline struct __condition_criterion_t * & get_next( struct __condition_criterion_t & this );
155
156 static inline void ?{}(__monitor_group_t & this) {
157 (this.data){NULL};
158 (this.size){0};
159 (this.func){NULL};
160 }
161
162 static inline void ?{}(__monitor_group_t & this, struct monitor_desc ** data, __lock_size_t size, fptr_t func) {
163 (this.data){data};
164 (this.size){size};
165 (this.func){func};
166 }
167
168 static inline bool ?==?( const __monitor_group_t & lhs, const __monitor_group_t & rhs ) {
169 if( (lhs.data != 0) != (rhs.data != 0) ) return false;
170 if( lhs.size != rhs.size ) return false;
171 if( lhs.func != rhs.func ) return false;
172
173 // Check that all the monitors match
174 for( int i = 0; i < lhs.size; i++ ) {
175 // If not a match, check next function
176 if( lhs[i] != rhs[i] ) return false;
177 }
178
179 return true;
180 }
181
182 static inline void ?=?(__monitor_group_t & lhs, const __monitor_group_t & rhs) {
183 lhs.data = rhs.data;
184 lhs.size = rhs.size;
185 lhs.func = rhs.func;
186 }
187 }
188 #endif
189
190#endif //_INVOKE_H_
191#else //! defined(__CFA_INVOKE_PRIVATE__)
192#ifndef _INVOKE_PRIVATE_H_
193#define _INVOKE_PRIVATE_H_
194
195 struct machine_context_t {
196 void *SP;
197 void *FP;
198 void *PC;
199 };
200
201 // assembler routines that performs the context switch
202 extern void CtxInvokeStub( void );
203 void CtxSwitch( void * from, void * to ) asm ("CtxSwitch");
204
205 #if defined( __i386 )
206 #define CtxGet( ctx ) __asm__ ( \
207 "movl %%esp,%0\n" \
208 "movl %%ebp,%1\n" \
209 : "=rm" (ctx.SP), "=rm" (ctx.FP) )
210 #elif defined( __x86_64 )
211 #define CtxGet( ctx ) __asm__ ( \
212 "movq %%rsp,%0\n" \
213 "movq %%rbp,%1\n" \
214 : "=rm" (ctx.SP), "=rm" (ctx.FP) )
215 #elif defined( __ARM_ARCH )
216 #define CtxGet( ctx ) __asm__ ( \
217 "mov %0,%%sp\n" \
218 "mov %1,%%r11\n" \
219 : "=rm" (ctx.SP), "=rm" (ctx.FP) )
220 #else
221 #error unknown hardware architecture
222 #endif
223
224#endif //_INVOKE_PRIVATE_H_
225#endif //! defined(__CFA_INVOKE_PRIVATE__)
226#ifdef __cforall
227}
228#endif
229
230// Local Variables: //
231// mode: c //
232// tab-width: 4 //
233// End: //
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