98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
/*
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* $Id$
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*
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Copyright (c) 2006-2019 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EQSERESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <qse/si/Thread.hpp>
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#include "thr-prv.h"
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QSE_BEGIN_NAMESPACE(QSE)
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Thread::Handle Thread::INVALID_HANDLE = QSE_THR_HND_INVALID;
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Thread::Thread(Mmgr* mmgr) QSE_CPP_NOEXCEPT: Mmged(mmgr), __exctx(QSE_NULL)
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{
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qse_thr_init (&this->thr, this->getMmgr());
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}
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Thread::~Thread () QSE_CPP_NOEXCEPT
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{
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QSE_ASSERT (this->thr.__state != QSE_THR_RUNNING);
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// it is subclasses' responsibility to stop the thread gracefully.
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// so stop is not called here.
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// this->stop ();
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/*if (this->thr.__joinable)*/ this->join ();
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qse_thr_fini (&this->thr);
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}
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static int thr_func_call_main (qse_thr_t* thr, void* ctx)
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{
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Thread* t = (Thread*)ctx;
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return t->main ();
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}
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int Thread::start (int flags) QSE_CPP_NOEXCEPT
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{
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return qse_thr_start(&this->thr, thr_func_call_main, this, flags);
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}
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int Thread::stop () QSE_CPP_NOEXCEPT
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{
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// NOTICE:
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// make sure that subclasses override "stop" and call it
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// properly so that the thread can be terminated gracefully.
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// "stop" here just aborts the running thread.
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return qse_thr_stop(&this->thr);
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}
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int ThreadR::thr_func_call_rtn (qse_thr_t* thr, void* ctx)
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{
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// 'thr' may not be point to the actual Thread
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// for the reason stated in Thread::start().
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// utilize the ctx pointer passed in Thread::start().
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ThreadR* t = (ThreadR*)ctx;
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return t->__tmprtn(t);
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}
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int ThreadR::start (ThreadRoutine rtn, int flags) QSE_CPP_NOEXCEPT
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{
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if (this->thr.__state == QSE_THR_RUNNING) return -1;
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// this != (qse_thr_t*)this may not be equal if this class
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// has some internal added data fields. e.g. it contains
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// a virtual function. direct invocation without the extra ctx pointer
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// like this has some implications when attempting to convert
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// qse_thr_t* to Thread*.
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// qse_thr_start (this, (qse_thr_rtn_t)rtn, QSE_NULL, flags);
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// so i pass a void pointer 'this' as the third argument.
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this->__tmprtn = rtn;
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return qse_thr_start(&this->thr, thr_func_call_rtn, this, flags);
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}
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QSE_END_NAMESPACE(QSE)
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