ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newwith_gc
Last change
on this file since 3bb51e1 was
f07e037,
checked in by Thierry Delisle <tdelisle@…>, 8 years ago
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Basic monitor implementation
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-
Property mode set to
100644
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File size:
1.1 KB
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[f07e037] | 1 | // -*- Mode: CFA -*- |
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| 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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| 8 | // monitor.c -- |
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| 9 | // |
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| 10 | // Author : Thierry Delisle |
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| 11 | // Created On : Thd Feb 23 12:27:26 2017 |
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| 12 | // Last Modified By : Thierry Delisle |
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| 13 | // Last Modified On : -- |
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| 14 | // Update Count : 0 |
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| 15 | // |
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| 16 | |
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| 17 | #include "monitor" |
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| 18 | |
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| 19 | #include "kernel_private.h" |
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| 20 | |
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| 21 | void enter(monitor * this) { |
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| 22 | lock( &this->lock ); |
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| 23 | thread * thrd = this_thread(); |
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| 24 | |
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| 25 | assert( this->entry_queue.tail != NULL ); |
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| 26 | |
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| 27 | if( this->holder ) { |
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| 28 | append( &this->entry_queue, thrd ); |
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| 29 | ScheduleInternal( &this->lock ); |
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| 30 | return; |
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| 31 | } |
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| 32 | else { |
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| 33 | this->holder = thrd; |
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| 34 | } |
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| 35 | |
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| 36 | assert( this->entry_queue.tail != NULL ); |
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| 37 | |
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| 38 | unlock( &this->lock ); |
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| 39 | } |
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| 40 | |
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| 41 | void leave(monitor * this) { |
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| 42 | lock( &this->lock ); |
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| 43 | |
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| 44 | assert( this->entry_queue.tail != NULL ); |
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| 45 | |
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| 46 | thread * thrd = this_thread(); |
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| 47 | assert( thrd == this->holder ); |
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| 48 | |
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| 49 | this->holder = pop_head( &this->entry_queue ); |
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| 50 | |
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| 51 | assert( this->entry_queue.tail != NULL ); |
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| 52 | |
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| 53 | unlock( &this->lock ); |
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| 54 | if( this->holder ) ScheduleThread( this->holder ); |
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| 55 | } |
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