/** \file Thread.cpp
 **	\date  2004-10-30
 **	\author grymse@alhem.net
**/
/*
Copyright (C) 2004-2010  Anders Hedstrom

This library is made available under the terms of the GNU GPL, with
the additional exemption that compiling, linking, and/or using OpenSSL 
is allowed.

If you would like to use this library in a closed-source application,
a separate license agreement is available. For information about
the closed-source license agreement for the C++ sockets library,
please visit http://www.alhem.net/Sockets/license.html and/or
email license@alhem.net.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
#include <stdio.h>
#ifdef _WIN32
#include <process.h>
#include "socket_include.h"
#else
#include <unistd.h>
#endif

#include "Thread.h"
#include "Utility.h"


#ifdef SOCKETS_NAMESPACE
namespace SOCKETS_NAMESPACE {
#endif


Thread::Thread(bool release)
:m_thread(0)
,m_running(true)
,m_release(false)
,m_b_delete_on_exit(false)
,m_b_destructor(false)
{
#ifdef _WIN32
//	m_thread = ::CreateThread(NULL, 0, StartThread, this, 0, &m_dwThreadId);
	m_thread = (HANDLE)_beginthreadex(NULL, 0, &StartThread, this, 0, &m_dwThreadId);
#else
	pthread_attr_t attr;

	pthread_attr_init(&attr);
	pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);
	if (pthread_create(&m_thread,&attr, StartThread,this) == -1)
	{
		perror("Thread: create failed");
		SetRunning(false);
	}
//	pthread_attr_destroy(&attr);
#endif
	m_release = release;
	if (release)
		m_sem.Post();
}


Thread::~Thread()
{
	m_b_destructor = true;
	if (m_running)
	{
		SetRelease(true);
		SetRunning(false);
		/*
			Sleep one second to give thread class Run method enough time to
			release from run loop
		*/
		Utility::Sleep(1000);
	}
#ifdef _WIN32
	if (m_thread)
		::CloseHandle(m_thread);
#endif
}


threadfunc_t STDPREFIX Thread::StartThread(threadparam_t zz)
{
	/*
		Sleep here to wait for derived thread class constructor to setup
		vtable... hurts just looking at it
	*/
	Utility::Sleep(5);

	Thread *p = (Thread *)zz;

	p -> Wait();
	if (p -> m_running)
	{
		p -> Run();
	}
	p -> SetRunning(false); // if return
	if (p -> DeleteOnExit() && !p -> IsDestructor())
	{
		delete p;
	}
#ifdef _WIN32
	_endthreadex(0);
#endif
	return (threadfunc_t)NULL;
}


bool Thread::IsRunning()
{
 	return m_running;
}


void Thread::SetRunning(bool x)
{
 	m_running = x;
}


bool Thread::IsReleased()
{
 	return m_release;
}


void Thread::SetRelease(bool x)
{
 	m_release = x;
 	if (x)
 		m_sem.Post();
}


bool Thread::DeleteOnExit()
{
	return m_b_delete_on_exit;
}


void Thread::SetDeleteOnExit(bool x)
{
	m_b_delete_on_exit = x;
}


bool Thread::IsDestructor()
{
	return m_b_destructor;
}


void Thread::Wait()
{
	m_sem.Wait();
}


#ifdef SOCKETS_NAMESPACE
}
#endif