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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007 Laurent Gomila (laurent.gom@gmail.com)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/System/Unix/Thread.hpp>
#include <iostream>
namespace sf
{
////////////////////////////////////////////////////////////
/// Default constructor
////////////////////////////////////////////////////////////
Thread::Thread() :
myIsActive(false),
myFunction(NULL),
myUserData(NULL)
{
}
////////////////////////////////////////////////////////////
/// Construct the thread from a function pointer
////////////////////////////////////////////////////////////
Thread::Thread(Thread::FuncType Function, void* UserData) :
myIsActive(false),
myFunction(Function),
myUserData(UserData)
{
}
////////////////////////////////////////////////////////////
/// Virtual destructor
////////////////////////////////////////////////////////////
Thread::~Thread()
{
// Wait for the thread to finish before destroying the instance
if (myIsActive)
Wait();
}
////////////////////////////////////////////////////////////
/// Create and run the thread
////////////////////////////////////////////////////////////
void Thread::Launch()
{
// Create the thread
myIsActive = true;
int Error = pthread_create(&myThread, NULL, &Thread::ThreadFunc, this);
// Error ?
if (Error != 0)
{
std::cerr << "Failed to create thread" << std::endl;
myIsActive = false;
}
}
////////////////////////////////////////////////////////////
/// Wait until the thread finishes
////////////////////////////////////////////////////////////
void Thread::Wait()
{
if (myIsActive)
{
// Wait for the thread to finish, no timeout
pthread_join(myThread, NULL);
// Reset the thread state
myIsActive = false;
}
}
////////////////////////////////////////////////////////////
/// Terminate the thread
/// Terminating a thread with this function is not safe,
/// you should rather try to make the thread function
/// terminate by itself
////////////////////////////////////////////////////////////
void Thread::Terminate()
{
if (myIsActive)
{
pthread_cancel(myThread);
myIsActive = false;
}
}
////////////////////////////////////////////////////////////
/// Function called as the thread entry point
////////////////////////////////////////////////////////////
void Thread::Run()
{
if (myFunction)
myFunction(myUserData);
}
////////////////////////////////////////////////////////////
/// Actual thread entry point, dispatches to instances
////////////////////////////////////////////////////////////
void* Thread::ThreadFunc(void* UserData)
{
// The sfThread instance is stored in the user data
Thread* ThreadToRun = reinterpret_cast<Thread*>(UserData);
// Tell the thread to handle cancel requests immediatly
pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
// Forward to the instance
ThreadToRun->Run();
return NULL;
}
} // namespace sf
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