/usr/share/doc/libglibmm-2.4-dev/examples/child_watch/main.cc is in libglibmm-2.4-doc 2.56.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | /* Copyright (C) 2005 The glibmm Development Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <glibmm.h>
#include <iostream>
#include <sys/types.h>
#include <unistd.h>
using namespace std;
class ChildWatch : public sigc::trackable
{
public:
ChildWatch(const Glib::RefPtr<Glib::MainLoop>& mainLoop) : m_mainLoop(mainLoop) {}
void on_child_exited(GPid pid, int status);
void run(); // fork a child and call signal_child_watch
private:
Glib::RefPtr<Glib::MainLoop> m_mainLoop;
};
void
ChildWatch::run()
{
GPid pid = fork();
if (!pid)
{
sleep(5);
exit(0);
}
std::cout << "Child " << pid << " created" << std::endl;
Glib::signal_child_watch().connect(sigc::mem_fun(*this, &ChildWatch::on_child_exited), pid);
}
void
ChildWatch::on_child_exited(GPid pid, int status)
{
std::cout << "Child " << pid << " exited with status " << status << std::endl;
m_mainLoop->quit();
}
int
main()
{
auto mainLoop = Glib::MainLoop::create();
ChildWatch cwatch(mainLoop);
cwatch.run();
mainLoop->run();
return 0;
}
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