[6a3d2e7] | 1 | // -*- Mode: CFA -*- |
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[78b3f52] | 2 | // |
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| 3 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo |
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| 4 | // |
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| 5 | // The contents of this file are covered under the licence agreement in the |
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| 6 | // file "LICENCE" distributed with Cforall. |
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| 7 | // |
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[75a17f1] | 8 | // thread.c -- |
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[78b3f52] | 9 | // |
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| 10 | // Author : Thierry Delisle |
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[f07e037] | 11 | // Created On : Tue Jan 17 12:27:26 2017 |
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[78b3f52] | 12 | // Last Modified By : Thierry Delisle |
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[6a3d2e7] | 13 | // Last Modified On : -- |
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[78b3f52] | 14 | // Update Count : 0 |
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| 15 | // |
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| 16 | |
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[75a17f1] | 17 | #include "thread" |
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[78b3f52] | 18 | |
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[75f3522] | 19 | #include "kernel_private.h" |
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[8118303] | 20 | #include "libhdr.h" |
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| 21 | |
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| 22 | #define __CFA_INVOKE_PRIVATE__ |
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| 23 | #include "invoke.h" |
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| 24 | |
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[bd98b58] | 25 | extern "C" { |
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[8fcbb4c] | 26 | #include <fenv.h> |
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[bd98b58] | 27 | #include <stddef.h> |
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| 28 | } |
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| 29 | |
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[89a3df5] | 30 | extern thread_local processor * this_processor; |
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[8118303] | 31 | |
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| 32 | //----------------------------------------------------------------------------- |
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| 33 | // Thread ctors and dtors |
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| 34 | |
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[348006f] | 35 | void ?{}(thread_desc* this) { |
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[17af7d1] | 36 | (&this->cor){}; |
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| 37 | this->cor.name = "Anonymous Coroutine"; |
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[cb0e6de] | 38 | this->mon.owner = this; |
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| 39 | this->mon.recursion = 1; |
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[bd98b58] | 40 | this->next = NULL; |
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[5ea06d6] | 41 | |
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| 42 | this->current_monitors = NULL; |
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| 43 | this->current_monitor_count = 0; |
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[8118303] | 44 | } |
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| 45 | |
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[348006f] | 46 | void ^?{}(thread_desc* this) { |
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[17af7d1] | 47 | ^(&this->cor){}; |
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[8118303] | 48 | } |
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| 49 | |
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[8def349] | 50 | forall( dtype T | sized(T) | is_thread(T) | { void ?{}(T*); } ) |
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[e15df4c] | 51 | void ?{}( scoped(T)* this ) { |
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[8118303] | 52 | (&this->handle){}; |
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[bd4d011] | 53 | __thrd_start(&this->handle); |
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[8118303] | 54 | } |
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| 55 | |
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[8def349] | 56 | forall( dtype T, ttype P | sized(T) | is_thread(T) | { void ?{}(T*, P); } ) |
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[e15df4c] | 57 | void ?{}( scoped(T)* this, P params ) { |
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[8118303] | 58 | (&this->handle){ params }; |
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[bd4d011] | 59 | __thrd_start(&this->handle); |
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[8118303] | 60 | } |
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| 61 | |
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[9f1695b] | 62 | forall( dtype T | sized(T) | is_thread(T) ) |
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[e15df4c] | 63 | void ^?{}( scoped(T)* this ) { |
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[8118303] | 64 | ^(&this->handle){}; |
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| 65 | } |
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| 66 | |
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| 67 | //----------------------------------------------------------------------------- |
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| 68 | // Starting and stopping threads |
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[0c92c9f] | 69 | forall( dtype T | is_thread(T) ) |
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[bd4d011] | 70 | void __thrd_start( T* this ) { |
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[c3acb841] | 71 | coroutine_desc* thrd_c = get_coroutine(this); |
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[348006f] | 72 | thread_desc* thrd_h = get_thread (this); |
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[8118303] | 73 | thrd_c->last = this_coroutine(); |
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[89a3df5] | 74 | this_processor->current_coroutine = thrd_c; |
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[8118303] | 75 | |
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[9d944b2] | 76 | LIB_DEBUG_PRINT_SAFE("Thread start : %p (t %p, c %p)\n", this, thrd_c, thrd_h); |
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[8118303] | 77 | |
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| 78 | create_stack(&thrd_c->stack, thrd_c->stack.size); |
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[bd98b58] | 79 | CtxStart(this, CtxInvokeThread); |
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[8118303] | 80 | CtxSwitch( thrd_c->last->stack.context, thrd_c->stack.context ); |
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| 81 | |
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[75f3522] | 82 | ScheduleThread(thrd_h); |
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[8118303] | 83 | } |
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| 84 | |
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[bd98b58] | 85 | void yield( void ) { |
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[89a3df5] | 86 | ScheduleInternal( this_processor->current_thread ); |
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[bd98b58] | 87 | } |
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| 88 | |
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[c3acb841] | 89 | void ThreadCtxSwitch(coroutine_desc* src, coroutine_desc* dst) { |
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[0c92c9f] | 90 | // set state of current coroutine to inactive |
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| 91 | src->state = Inactive; |
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[75f3522] | 92 | dst->state = Active; |
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[0c92c9f] | 93 | |
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[75f3522] | 94 | //update the last resumer |
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| 95 | dst->last = src; |
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[0c92c9f] | 96 | |
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[75f3522] | 97 | // set new coroutine that the processor is executing |
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| 98 | // and context switch to it |
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[89a3df5] | 99 | this_processor->current_coroutine = dst; |
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[0c92c9f] | 100 | CtxSwitch( src->stack.context, dst->stack.context ); |
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[89a3df5] | 101 | this_processor->current_coroutine = src; |
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[0c92c9f] | 102 | |
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| 103 | // set state of new coroutine to active |
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[75f3522] | 104 | dst->state = Inactive; |
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[0c92c9f] | 105 | src->state = Active; |
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| 106 | } |
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| 107 | |
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[78b3f52] | 108 | // Local Variables: // |
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| 109 | // mode: c // |
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| 110 | // tab-width: 4 // |
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[6a3d2e7] | 111 | // End: // |
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