source: libcfa/src/concurrency/thread.cfa @ 121be3e

arm-ehjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-expr
Last change on this file since 121be3e was 121be3e, checked in by Peter A. Buhr <pabuhr@…>, 23 months ago

change NULL to 0p

  • 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 : Wed Dec  4 09:17:49 2019
13// Update Count     : 9
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{ 0p, 0p };
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
45        node.next = 0p;
46        node.prev = 0p;
47        doregister(curr_cluster, this);
48
49        monitors{ &self_mon_p, 1, (fptr_t)0 };
50}
51
52void ^?{}(thread_desc& this) with( this ) {
53        unregister(curr_cluster, this);
54        ^self_cor{};
55}
56
57forall( dtype T | sized(T) | is_thread(T) | { void ?{}(T&); } )
58void ?{}( scoped(T)& this ) with( this ) {
59        handle{};
60        __thrd_start(handle);
61}
62
63forall( dtype T, ttype P | sized(T) | is_thread(T) | { void ?{}(T&, P); } )
64void ?{}( scoped(T)& this, P params ) with( this ) {
65        handle{ params };
66        __thrd_start(handle);
67}
68
69forall( dtype T | sized(T) | is_thread(T) )
70void ^?{}( scoped(T)& this ) with( this ) {
71        ^handle{};
72}
73
74//-----------------------------------------------------------------------------
75// Starting and stopping threads
76forall( dtype T | is_thread(T) )
77void __thrd_start( T& this ) {
78        thread_desc * this_thrd = get_thread(this);
79        thread_desc * curr_thrd = TL_GET( this_thread );
80
81        disable_interrupts();
82        CtxStart(&this, CtxInvokeThread);
83        this_thrd->context.[SP, FP] = this_thrd->self_cor.context.[SP, FP];
84        verify( this_thrd->context.SP );
85        CtxSwitch( &curr_thrd->context, &this_thrd->context );
86
87        ScheduleThread(this_thrd);
88        enable_interrupts( __cfaabi_dbg_ctx );
89}
90
91extern "C" {
92        // KERNEL ONLY
93        void __finish_creation(thread_desc * this) {
94                // set new coroutine that the processor is executing
95                // and context switch to it
96                verify( kernelTLS.this_thread != this );
97                verify( kernelTLS.this_thread->context.SP );
98                CtxSwitch( &this->context, &kernelTLS.this_thread->context );
99        }
100}
101
102void yield( void ) {
103        // Safety note : This could cause some false positives due to preemption
104      verify( TL_GET( preemption_state.enabled ) );
105        BlockInternal( TL_GET( this_thread ) );
106        // Safety note : This could cause some false positives due to preemption
107      verify( TL_GET( preemption_state.enabled ) );
108}
109
110void yield( unsigned times ) {
111        for( unsigned i = 0; i < times; i++ ) {
112                yield();
113        }
114}
115
116// Local Variables: //
117// mode: c //
118// tab-width: 4 //
119// End: //
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