source: libcfa/src/concurrency/thread.cfa @ 7768b8d

arm-ehjacob/cs343-translationnew-astnew-ast-unique-expr
Last change on this file since 7768b8d was 7768b8d, checked in by Thierry Delisle <tdelisle@…>, 2 years ago

First step at adding the new ready queue to Cforall

  • Property mode set to 100644
File size: 3.0 KB
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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 Mar 30 17:19:52 2018
13// Update Count     : 8
14//
15
16#define __cforall_thread__
17
18#include "thread.hfa"
19
20#include "kernel_private.hfa"
21
22#define __CFA_INVOKE_PRIVATE__
23#include "invoke.h"
24
25extern "C" {
26        #include <fenv.h>
27        #include <stddef.h>
28}
29
30//extern volatile thread_local processor * this_processor;
31
32//-----------------------------------------------------------------------------
33// Thread ctors and dtors
34void ?{}(thread_desc & this, const char * const name, cluster & cl, void * storage, size_t storageSize ) with( this ) {
35        context{ NULL, NULL };
36        self_cor{ name, storage, storageSize };
37        state = Start;
38        curr_cor = &self_cor;
39        self_mon.owner = &this;
40        self_mon.recursion = 1;
41        self_mon_p = &self_mon;
42        curr_cluster = &cl;
43        next = 0p;
44        prev = 0p;
45
46        node.next = NULL;
47        node.prev = NULL;
48        doregister(curr_cluster, this);
49
50        monitors{ &self_mon_p, 1, (fptr_t)0 };
51}
52
53void ^?{}(thread_desc& this) with( this ) {
54        unregister(curr_cluster, this);
55        ^self_cor{};
56}
57
58forall( dtype T | sized(T) | is_thread(T) | { void ?{}(T&); } )
59void ?{}( scoped(T)& this ) with( this ) {
60        handle{};
61        __thrd_start(handle);
62}
63
64forall( dtype T, ttype P | sized(T) | is_thread(T) | { void ?{}(T&, P); } )
65void ?{}( scoped(T)& this, P params ) with( this ) {
66        handle{ params };
67        __thrd_start(handle);
68}
69
70forall( dtype T | sized(T) | is_thread(T) )
71void ^?{}( scoped(T)& this ) with( this ) {
72        ^handle{};
73}
74
75//-----------------------------------------------------------------------------
76// Starting and stopping threads
77forall( dtype T | is_thread(T) )
78void __thrd_start( T& this ) {
79        thread_desc * this_thrd = get_thread(this);
80        thread_desc * curr_thrd = TL_GET( this_thread );
81
82        disable_interrupts();
83        CtxStart(&this, CtxInvokeThread);
84        this_thrd->context.[SP, FP] = this_thrd->self_cor.context.[SP, FP];
85        verify( this_thrd->context.SP );
86        CtxSwitch( &curr_thrd->context, &this_thrd->context );
87
88        ScheduleThread(this_thrd);
89        enable_interrupts( __cfaabi_dbg_ctx );
90}
91
92extern "C" {
93        // KERNEL ONLY
94        void __finish_creation(thread_desc * this) {
95                // set new coroutine that the processor is executing
96                // and context switch to it
97                verify( kernelTLS.this_thread != this );
98                verify( kernelTLS.this_thread->context.SP );
99                CtxSwitch( &this->context, &kernelTLS.this_thread->context );
100        }
101}
102
103void yield( void ) {
104        // Safety note : This could cause some false positives due to preemption
105      verify( TL_GET( preemption_state.enabled ) );
106        BlockInternal( TL_GET( this_thread ) );
107        // Safety note : This could cause some false positives due to preemption
108      verify( TL_GET( preemption_state.enabled ) );
109}
110
111void yield( unsigned times ) {
112        for( unsigned i = 0; i < times; i++ ) {
113                yield();
114        }
115}
116
117// Local Variables: //
118// mode: c //
119// tab-width: 4 //
120// End: //
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