source: src/libcfa/concurrency/thread.c @ 7416d46a

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerresolv-newwith_gc
Last change on this file since 7416d46a was 7416d46a, checked in by Thierry Delisle <tdelisle@…>, 4 years ago

Merge branch 'master' of plg.uwaterloo.ca:software/cfa/cfa-cc

  • Property mode set to 100644
File size: 3.0 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// thread.c --
8//
9// Author           : Thierry Delisle
10// Created On       : Tue Jan 17 12:27:26 2017
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Fri Jul 21 22:34:46 2017
13// Update Count     : 1
14//
15
16#include "thread"
17
18#include "kernel_private.h"
19
20#define __CFA_INVOKE_PRIVATE__
21#include "invoke.h"
22
23extern "C" {
24        #include <fenv.h>
25        #include <stddef.h>
26}
27
28extern volatile thread_local processor * this_processor;
29
30//-----------------------------------------------------------------------------
31// Thread ctors and dtors
32
33void ?{}(thread_desc& this) with( this ) {
34        self_cor{};
35        self_cor.name = "Anonymous Coroutine";
36        self_mon.owner = &this;
37        self_mon.recursion = 1;
38        self_mon_p = &self_mon;
39        next = NULL;
40        __cfaabi_dbg_debug_do(
41                dbg_next = NULL;
42                dbg_prev = NULL;
43                __cfaabi_dbg_thread_register(&this);
44        )
45
46        monitors{ &self_mon_p, 1, (fptr_t)0 };
47}
48
49void ^?{}(thread_desc& this) with( this ) {
50        ^self_cor{};
51}
52
53forall( dtype T | sized(T) | is_thread(T) | { void ?{}(T&); } )
54void ?{}( scoped(T)& this ) with( this ) {
55        handle{};
56        __thrd_start(handle);
57}
58
59forall( dtype T, ttype P | sized(T) | is_thread(T) | { void ?{}(T&, P); } )
60void ?{}( scoped(T)& this, P params ) with( this ) {
61        handle{ params };
62        __thrd_start(handle);
63}
64
65forall( dtype T | sized(T) | is_thread(T) )
66void ^?{}( scoped(T)& this ) with( this ) {
67        ^handle{};
68}
69
70//-----------------------------------------------------------------------------
71// Starting and stopping threads
72forall( dtype T | is_thread(T) )
73void __thrd_start( T& this ) {
74        coroutine_desc* thrd_c = get_coroutine(this);
75        thread_desc   * thrd_h = get_thread   (this);
76        thrd_c->last = this_coroutine;
77
78        // __cfaabi_dbg_print_safe("Thread start : %p (t %p, c %p)\n", this, thrd_c, thrd_h);
79
80        disable_interrupts();
81        create_stack(&thrd_c->stack, thrd_c->stack.size);
82        this_coroutine = thrd_c;
83        CtxStart(&this, CtxInvokeThread);
84        assert( thrd_c->last->stack.context );
85        CtxSwitch( thrd_c->last->stack.context, thrd_c->stack.context );
86
87        ScheduleThread(thrd_h);
88        enable_interrupts( __cfaabi_dbg_ctx );
89}
90
91void yield( void ) {
92        BlockInternal( this_thread );
93}
94
95void yield( unsigned times ) {
96        for( unsigned i = 0; i < times; i++ ) {
97                yield();
98        }
99}
100
101void ThreadCtxSwitch(coroutine_desc* src, coroutine_desc* dst) {
102        // set state of current coroutine to inactive
103        src->state = src->state == Halted ? Halted : Inactive;
104        dst->state = Active;
105
106        //update the last resumer
107        dst->last = src;
108
109        // set new coroutine that the processor is executing
110        // and context switch to it
111        this_coroutine = dst;
112        assert( src->stack.context );
113        CtxSwitch( src->stack.context, dst->stack.context );
114        this_coroutine = src;
115
116        // set state of new coroutine to active
117        dst->state = dst->state == Halted ? Halted : Inactive;
118        src->state = Active;
119}
120
121// Local Variables: //
122// mode: c //
123// tab-width: 4 //
124// End: //
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