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/* Gobby - GTK-based collaborative text editor
* Copyright (C) 2008-2015 Armin Burgmeier <armin@arbur.net>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "util/asyncoperation.hpp"
#include <glibmm/main.h>
#include <cassert>
#include <cstdio>
Gobby::AsyncOperation::Handle::Handle(AsyncOperation& operation):
m_operation(&operation)
{
}
Gobby::AsyncOperation::Handle::~Handle()
{
if(m_operation)
{
if(!m_operation->m_finished)
cancel();
m_operation->m_handle = NULL;
}
}
void Gobby::AsyncOperation::Handle::cancel()
{
assert(m_operation);
assert(m_operation->m_finished == false);
m_operation->m_finished = true;
}
Gobby::AsyncOperation::AsyncOperation():
m_thread(NULL), m_handle(NULL), m_finished(false)
{
}
Gobby::AsyncOperation::~AsyncOperation()
{
if(m_handle)
m_handle->m_operation = NULL;
}
std::unique_ptr<Gobby::AsyncOperation::Handle>
Gobby::AsyncOperation::start(std::unique_ptr<AsyncOperation> operation)
{
assert(operation->m_thread == NULL);
assert(operation->m_handle == NULL);
assert(operation->m_finished == false);
AsyncOperation* op = operation.release();
std::unique_ptr<Handle> handle(new Handle(*op));
op->m_handle = handle.get();
op->m_thread = Glib::Thread::create(
sigc::mem_fun(*op, &AsyncOperation::thread_run), true);
return handle;
}
void Gobby::AsyncOperation::thread_run()
{
run();
Glib::signal_idle().connect(
sigc::mem_fun(*this, &AsyncOperation::done));
}
bool Gobby::AsyncOperation::done()
{
if(!m_finished)
{
// m_handle DTOR cancels the operation
g_assert(m_handle != NULL);
m_finished = true;
finish();
}
if(m_handle)
m_handle->m_operation = NULL;
delete this;
return false;
}
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