source: src/libcfa/concurrency/thread.c @ b10affd

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumwith_gc
Last change on this file since b10affd was b10affd, checked in by Peter A. Buhr <pabuhr@…>, 6 years ago

thread-local storage converted to structure and thread-local macros for access

  • Property mode set to 100644
File size: 3.2 KB
RevLine 
[78b3f52]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//
[75a17f1]7// thread.c --
[78b3f52]8//
9// Author           : Thierry Delisle
[f07e037]10// Created On       : Tue Jan 17 12:27:26 2017
[6b0b624]11// Last Modified By : Peter A. Buhr
[b10affd]12// Last Modified On : Fri Mar 30 17:19:52 2018
13// Update Count     : 8
[78b3f52]14//
15
[75a17f1]16#include "thread"
[78b3f52]17
[75f3522]18#include "kernel_private.h"
[8118303]19
20#define __CFA_INVOKE_PRIVATE__
21#include "invoke.h"
22
[bd98b58]23extern "C" {
[8fcbb4c]24        #include <fenv.h>
[bd98b58]25        #include <stddef.h>
26}
27
[b10affd]28//extern volatile thread_local processor * this_processor;
[8118303]29
30//-----------------------------------------------------------------------------
31// Thread ctors and dtors
32
[65deb18]33void ?{}(thread_desc& this) with( this ) {
34        self_cor{};
35        self_cor.name = "Anonymous Coroutine";
[82c948c]36        curr_cor = &self_cor;
[65deb18]37        self_mon.owner = &this;
38        self_mon.recursion = 1;
39        self_mon_p = &self_mon;
40        next = NULL;
[f7d6bb0]41        __cfaabi_dbg_debug_do(
[7416d46a]42                dbg_next = NULL;
43                dbg_prev = NULL;
[f7d6bb0]44                __cfaabi_dbg_thread_register(&this);
45        )
[5ea06d6]46
[65deb18]47        monitors{ &self_mon_p, 1, (fptr_t)0 };
[8118303]48}
49
[65deb18]50void ^?{}(thread_desc& this) with( this ) {
51        ^self_cor{};
[8118303]52}
53
[242a902]54forall( dtype T | sized(T) | is_thread(T) | { void ?{}(T&); } )
[65deb18]55void ?{}( scoped(T)& this ) with( this ) {
56        handle{};
57        __thrd_start(handle);
[8118303]58}
59
[242a902]60forall( dtype T, ttype P | sized(T) | is_thread(T) | { void ?{}(T&, P); } )
[65deb18]61void ?{}( scoped(T)& this, P params ) with( this ) {
62        handle{ params };
63        __thrd_start(handle);
[8118303]64}
65
[9f1695b]66forall( dtype T | sized(T) | is_thread(T) )
[65deb18]67void ^?{}( scoped(T)& this ) with( this ) {
68        ^handle{};
[8118303]69}
70
71//-----------------------------------------------------------------------------
72// Starting and stopping threads
[0c92c9f]73forall( dtype T | is_thread(T) )
[83a071f9]74void __thrd_start( T& this ) {
[c3acb841]75        coroutine_desc* thrd_c = get_coroutine(this);
[65deb18]76        thread_desc   * thrd_h = get_thread   (this);
[b10affd]77        thrd_c->last = TL_GET( this_coroutine );
[8118303]78
[36982fc]79        // __cfaabi_dbg_print_safe("Thread start : %p (t %p, c %p)\n", this, thrd_c, thrd_h);
[8118303]80
[1c273d0]81        disable_interrupts();
[8118303]82        create_stack(&thrd_c->stack, thrd_c->stack.size);
[b10affd]83        TL_SET( this_coroutine, thrd_c );
[83a071f9]84        CtxStart(&this, CtxInvokeThread);
[1c273d0]85        assert( thrd_c->last->stack.context );
[8118303]86        CtxSwitch( thrd_c->last->stack.context, thrd_c->stack.context );
87
[75f3522]88        ScheduleThread(thrd_h);
[36982fc]89        enable_interrupts( __cfaabi_dbg_ctx );
[8118303]90}
91
[b69ea6b]92extern "C" {
93        void __finish_creation(void) {
[b10affd]94                coroutine_desc* thrd_c = TL_GET( this_coroutine );
[b69ea6b]95                ThreadCtxSwitch( thrd_c, thrd_c->last );
96        }
97}
98
[bd98b58]99void yield( void ) {
[b10affd]100        verify( TL_GET( preemption_state ).enabled );
101        BlockInternal( TL_GET( this_thread ) );
102        verify( TL_GET( preemption_state ).enabled );
[bd98b58]103}
104
[44264c5]105void yield( unsigned times ) {
106        for( unsigned i = 0; i < times; i++ ) {
107                yield();
108        }
109}
110
[c3acb841]111void ThreadCtxSwitch(coroutine_desc* src, coroutine_desc* dst) {
[0c92c9f]112        // set state of current coroutine to inactive
[1c273d0]113        src->state = src->state == Halted ? Halted : Inactive;
[75f3522]114        dst->state = Active;
[0c92c9f]115
[75f3522]116        // set new coroutine that the processor is executing
117        // and context switch to it
[b10affd]118        TL_SET( this_coroutine, dst );
[1c273d0]119        assert( src->stack.context );
[0c92c9f]120        CtxSwitch( src->stack.context, dst->stack.context );
[b10affd]121        TL_SET( this_coroutine, src );
[0c92c9f]122
123        // set state of new coroutine to active
[1c273d0]124        dst->state = dst->state == Halted ? Halted : Inactive;
[0c92c9f]125        src->state = Active;
126}
127
[78b3f52]128// Local Variables: //
129// mode: c //
130// tab-width: 4 //
[6a3d2e7]131// End: //
Note: See TracBrowser for help on using the repository browser.