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 Jul 21 22:28:56 2017 |
---|
13 | // Update Count : 1 |
---|
14 | // |
---|
15 | |
---|
16 | #include <stdbool.h> |
---|
17 | #include <stdint.h> |
---|
18 | |
---|
19 | #ifdef __CFORALL__ |
---|
20 | extern "C" { |
---|
21 | #endif |
---|
22 | |
---|
23 | #if ! defined(__CFA_INVOKE_PRIVATE__) |
---|
24 | #ifndef _INVOKE_H_ |
---|
25 | #define _INVOKE_H_ |
---|
26 | |
---|
27 | #define unlikely(x) __builtin_expect(!!(x), 0) |
---|
28 | #define thread_local _Thread_local |
---|
29 | |
---|
30 | typedef void (*fptr_t)(); |
---|
31 | |
---|
32 | struct spinlock { |
---|
33 | volatile int lock; |
---|
34 | #ifdef __CFA_DEBUG__ |
---|
35 | const char * prev_name; |
---|
36 | void* prev_thrd; |
---|
37 | #endif |
---|
38 | }; |
---|
39 | |
---|
40 | struct __thread_queue_t { |
---|
41 | struct thread_desc * head; |
---|
42 | struct thread_desc ** tail; |
---|
43 | }; |
---|
44 | |
---|
45 | struct __condition_stack_t { |
---|
46 | struct __condition_criterion_t * top; |
---|
47 | }; |
---|
48 | |
---|
49 | #ifdef __CFORALL__ |
---|
50 | extern "Cforall" { |
---|
51 | void ?{}( struct __thread_queue_t * ); |
---|
52 | void append( struct __thread_queue_t *, struct thread_desc * ); |
---|
53 | struct thread_desc * pop_head( struct __thread_queue_t * ); |
---|
54 | struct thread_desc * remove( struct __thread_queue_t *, struct thread_desc ** ); |
---|
55 | |
---|
56 | void ?{}( struct __condition_stack_t * ); |
---|
57 | void push( struct __condition_stack_t *, struct __condition_criterion_t * ); |
---|
58 | struct __condition_criterion_t * pop( struct __condition_stack_t * ); |
---|
59 | |
---|
60 | void ?{}(spinlock * this); |
---|
61 | void ^?{}(spinlock * this); |
---|
62 | } |
---|
63 | #endif |
---|
64 | |
---|
65 | struct coStack_t { |
---|
66 | unsigned int size; // size of stack |
---|
67 | void *storage; // pointer to stack |
---|
68 | void *limit; // stack grows towards stack limit |
---|
69 | void *base; // base of stack |
---|
70 | void *context; // address of cfa_context_t |
---|
71 | void *top; // address of top of storage |
---|
72 | bool userStack; // whether or not the user allocated the stack |
---|
73 | }; |
---|
74 | |
---|
75 | enum coroutine_state { Halted, Start, Inactive, Active, Primed }; |
---|
76 | |
---|
77 | struct coroutine_desc { |
---|
78 | struct coStack_t stack; // stack information of the coroutine |
---|
79 | const char *name; // textual name for coroutine/task, initialized by uC++ generated code |
---|
80 | int errno_; // copy of global UNIX variable errno |
---|
81 | enum coroutine_state state; // current execution status for coroutine |
---|
82 | struct coroutine_desc *starter; // first coroutine to resume this one |
---|
83 | struct coroutine_desc *last; // last coroutine to resume this one |
---|
84 | }; |
---|
85 | |
---|
86 | struct monitor_desc { |
---|
87 | struct spinlock lock; // spinlock to protect internal data |
---|
88 | struct thread_desc * owner; // current owner of the monitor |
---|
89 | struct __thread_queue_t entry_queue; // queue of threads that are blocked waiting for the monitor |
---|
90 | struct __condition_stack_t signal_stack; // stack of conditions to run next once we exit the monitor |
---|
91 | unsigned int recursion; // monitor routines can be called recursively, we need to keep track of that |
---|
92 | |
---|
93 | struct __acceptable_t * acceptables; // list of acceptable functions, null if any |
---|
94 | unsigned short acceptable_count; // number of acceptable functions |
---|
95 | short accepted_index; // the index of the accepted function, -1 if none |
---|
96 | fptr_t pre_accept; // function to run before an accept |
---|
97 | }; |
---|
98 | |
---|
99 | struct thread_desc { |
---|
100 | // Core threading fields |
---|
101 | struct coroutine_desc cor; // coroutine body used to store context |
---|
102 | struct monitor_desc mon; // monitor body used for mutual exclusion |
---|
103 | |
---|
104 | // Link lists fields |
---|
105 | struct thread_desc * next; // instrusive link field for threads |
---|
106 | |
---|
107 | // Current status related to monitors |
---|
108 | struct monitor_desc ** current_monitors; // currently held monitors |
---|
109 | unsigned short current_monitor_count; // number of currently held monitors |
---|
110 | fptr_t current_monitor_func; // last function that acquired monitors |
---|
111 | }; |
---|
112 | |
---|
113 | #endif //_INVOKE_H_ |
---|
114 | #else //! defined(__CFA_INVOKE_PRIVATE__) |
---|
115 | #ifndef _INVOKE_PRIVATE_H_ |
---|
116 | #define _INVOKE_PRIVATE_H_ |
---|
117 | |
---|
118 | struct machine_context_t { |
---|
119 | void *SP; |
---|
120 | void *FP; |
---|
121 | void *PC; |
---|
122 | }; |
---|
123 | |
---|
124 | // assembler routines that performs the context switch |
---|
125 | extern void CtxInvokeStub( void ); |
---|
126 | void CtxSwitch( void * from, void * to ) asm ("CtxSwitch"); |
---|
127 | |
---|
128 | #if defined( __x86_64__ ) |
---|
129 | #define CtxGet( ctx ) __asm__ ( \ |
---|
130 | "movq %%rsp,%0\n" \ |
---|
131 | "movq %%rbp,%1\n" \ |
---|
132 | : "=rm" (ctx.SP), "=rm" (ctx.FP) ) |
---|
133 | #elif defined( __i386__ ) |
---|
134 | #define CtxGet( ctx ) __asm__ ( \ |
---|
135 | "movl %%esp,%0\n" \ |
---|
136 | "movl %%ebp,%1\n" \ |
---|
137 | : "=rm" (ctx.SP), "=rm" (ctx.FP) ) |
---|
138 | #endif |
---|
139 | |
---|
140 | #endif //_INVOKE_PRIVATE_H_ |
---|
141 | #endif //! defined(__CFA_INVOKE_PRIVATE__) |
---|
142 | #ifdef __CFORALL__ |
---|
143 | } |
---|
144 | #endif |
---|
145 | |
---|
146 | // Local Variables: // |
---|
147 | // mode: c // |
---|
148 | // tab-width: 4 // |
---|
149 | // End: // |
---|