[8def349] | 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // invoke.h --
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| 8 | //
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| 9 | // Author : Thierry Delisle
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| 10 | // Created On : Tue Jan 17 12:27:26 2016
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[6b0b624] | 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Fri Jul 21 22:28:56 2017
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| 13 | // Update Count : 1
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[8def349] | 14 | //
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| 15 |
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[5c81105] | 16 | #include <stdbool.h>
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| 17 | #include <stdint.h>
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[78b3f52] | 18 |
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[5c81105] | 19 | #ifdef __CFORALL__
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| 20 | extern "C" {
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| 21 | #endif
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| 22 |
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| 23 | #if ! defined(__CFA_INVOKE_PRIVATE__)
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[78b3f52] | 24 | #ifndef _INVOKE_H_
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| 25 | #define _INVOKE_H_
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| 26 |
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[596f987b] | 27 | #define unlikely(x) __builtin_expect(!!(x), 0)
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[8def349] | 28 | #define thread_local _Thread_local
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[bd98b58] | 29 |
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[90c4df0] | 30 | typedef void (*fptr_t)();
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| 31 |
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[db6f06a] | 32 | struct spinlock {
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| 33 | volatile int lock;
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[1c273d0] | 34 | #ifdef __CFA_DEBUG__
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[b227f68] | 35 | const char * prev_name;
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| 36 | void* prev_thrd;
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[1c273d0] | 37 | #endif
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[db6f06a] | 38 | };
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| 39 |
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[5ea06d6] | 40 | struct __thread_queue_t {
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[348006f] | 41 | struct thread_desc * head;
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| 42 | struct thread_desc ** tail;
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[bd98b58] | 43 | };
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| 44 |
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[0c78741] | 45 | struct __condition_stack_t {
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| 46 | struct __condition_criterion_t * top;
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[690f13c] | 47 | };
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| 48 |
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[bd98b58] | 49 | #ifdef __CFORALL__
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| 50 | extern "Cforall" {
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[242a902] | 51 | void ?{}( struct __thread_queue_t & );
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[5ea06d6] | 52 | void append( struct __thread_queue_t *, struct thread_desc * );
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| 53 | struct thread_desc * pop_head( struct __thread_queue_t * );
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[90c4df0] | 54 | struct thread_desc * remove( struct __thread_queue_t *, struct thread_desc ** );
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[db6f06a] | 55 |
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[242a902] | 56 | void ?{}( struct __condition_stack_t & );
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[0c78741] | 57 | void push( struct __condition_stack_t *, struct __condition_criterion_t * );
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| 58 | struct __condition_criterion_t * pop( struct __condition_stack_t * );
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[690f13c] | 59 |
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[242a902] | 60 | void ?{}(spinlock & this);
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| 61 | void ^?{}(spinlock & this);
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[bd98b58] | 62 | }
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| 63 | #endif
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[596f987b] | 64 |
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| 65 | struct coStack_t {
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[5ea06d6] | 66 | unsigned int size; // size of stack
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| 67 | void *storage; // pointer to stack
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| 68 | void *limit; // stack grows towards stack limit
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| 69 | void *base; // base of stack
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| 70 | void *context; // address of cfa_context_t
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| 71 | void *top; // address of top of storage
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| 72 | bool userStack; // whether or not the user allocated the stack
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[5c81105] | 73 | };
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[78b3f52] | 74 |
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[ee897e4b] | 75 | enum coroutine_state { Halted, Start, Inactive, Active, Primed };
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[78b3f52] | 76 |
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[c3acb841] | 77 | struct coroutine_desc {
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[5ea06d6] | 78 | struct coStack_t stack; // stack information of the coroutine
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| 79 | const char *name; // textual name for coroutine/task, initialized by uC++ generated code
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| 80 | int errno_; // copy of global UNIX variable errno
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| 81 | enum coroutine_state state; // current execution status for coroutine
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| 82 | struct coroutine_desc *starter; // first coroutine to resume this one
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| 83 | struct coroutine_desc *last; // last coroutine to resume this one
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[5c81105] | 84 | };
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[78b3f52] | 85 |
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[cb0e6de] | 86 | struct monitor_desc {
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[5ea06d6] | 87 | struct spinlock lock; // spinlock to protect internal data
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| 88 | struct thread_desc * owner; // current owner of the monitor
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| 89 | struct __thread_queue_t entry_queue; // queue of threads that are blocked waiting for the monitor
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[0c78741] | 90 | struct __condition_stack_t signal_stack; // stack of conditions to run next once we exit the monitor
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[5ea06d6] | 91 | unsigned int recursion; // monitor routines can be called recursively, we need to keep track of that
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[97e3296] | 92 |
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| 93 | struct __acceptable_t * acceptables; // list of acceptable functions, null if any
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| 94 | unsigned short acceptable_count; // number of acceptable functions
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| 95 | short accepted_index; // the index of the accepted function, -1 if none
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| 96 | };
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[cb0e6de] | 97 |
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[348006f] | 98 | struct thread_desc {
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[90c4df0] | 99 | // Core threading fields
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[5ea06d6] | 100 | struct coroutine_desc cor; // coroutine body used to store context
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| 101 | struct monitor_desc mon; // monitor body used for mutual exclusion
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[90c4df0] | 102 |
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| 103 | // Link lists fields
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[5ea06d6] | 104 | struct thread_desc * next; // instrusive link field for threads
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[90c4df0] | 105 |
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| 106 | // Current status related to monitors
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[5ea06d6] | 107 | struct monitor_desc ** current_monitors; // currently held monitors
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| 108 | unsigned short current_monitor_count; // number of currently held monitors
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[90c4df0] | 109 | fptr_t current_monitor_func; // last function that acquired monitors
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[97e3296] | 110 | };
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[8118303] | 111 |
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[5c81105] | 112 | #endif //_INVOKE_H_
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| 113 | #else //! defined(__CFA_INVOKE_PRIVATE__)
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| 114 | #ifndef _INVOKE_PRIVATE_H_
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| 115 | #define _INVOKE_PRIVATE_H_
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[b227f68] | 116 |
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[596f987b] | 117 | struct machine_context_t {
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[5c81105] | 118 | void *SP;
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| 119 | void *FP;
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| 120 | void *PC;
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| 121 | };
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[78b3f52] | 122 |
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[5c81105] | 123 | // assembler routines that performs the context switch
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[b58a5772] | 124 | extern void CtxInvokeStub( void );
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[eb2e723] | 125 | void CtxSwitch( void * from, void * to ) asm ("CtxSwitch");
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[f32e53e] | 126 |
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| 127 | #if defined( __x86_64__ )
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| 128 | #define CtxGet( ctx ) __asm__ ( \
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| 129 | "movq %%rsp,%0\n" \
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| 130 | "movq %%rbp,%1\n" \
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| 131 | : "=rm" (ctx.SP), "=rm" (ctx.FP) )
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| 132 | #elif defined( __i386__ )
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| 133 | #define CtxGet( ctx ) __asm__ ( \
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| 134 | "movl %%esp,%0\n" \
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| 135 | "movl %%ebp,%1\n" \
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| 136 | : "=rm" (ctx.SP), "=rm" (ctx.FP) )
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| 137 | #endif
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[78b3f52] | 138 |
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[5c81105] | 139 | #endif //_INVOKE_PRIVATE_H_
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| 140 | #endif //! defined(__CFA_INVOKE_PRIVATE__)
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| 141 | #ifdef __CFORALL__
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| 142 | }
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| 143 | #endif
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[6b0b624] | 144 |
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| 145 | // Local Variables: //
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| 146 | // mode: c //
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| 147 | // tab-width: 4 //
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| 148 | // End: //
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