forked from blue/squawk
60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
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#include "signalcatcher.h"
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#include <signal.h>
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#include <sys/socket.h>
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#include <unistd.h>
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int SignalCatcher::sigintFd[2] = {0,0};
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SignalCatcher::SignalCatcher(QCoreApplication *p_app, QObject *parent):
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QObject(parent),
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app(p_app)
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{
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if (::socketpair(AF_UNIX, SOCK_STREAM, 0, sigintFd))
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{
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qFatal("Couldn't create INT socketpair");
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}
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if (setup_unix_signal_handlers() != 0)
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{
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qFatal("Couldn't install unix handlers");
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}
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snInt = new QSocketNotifier(sigintFd[1], QSocketNotifier::Read, this);
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connect(snInt, SIGNAL(activated(int)), this, SLOT(handleSigInt()));
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}
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SignalCatcher::~SignalCatcher()
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{}
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void SignalCatcher::handleSigInt()
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{
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snInt->setEnabled(false);
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char tmp;
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::read(sigintFd[1], &tmp, sizeof(tmp));
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app->quit();
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snInt->setEnabled(true);
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}
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void SignalCatcher::intSignalHandler(int unused)
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{
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char a = 1;
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::write(sigintFd[0], &a, sizeof(a));
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}
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int SignalCatcher::setup_unix_signal_handlers()
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{
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struct sigaction s_int;
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s_int.sa_handler = SignalCatcher::intSignalHandler;
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sigemptyset(&s_int.sa_mask);
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s_int.sa_flags = 0;
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s_int.sa_flags |= SA_RESTART;
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if (sigaction(SIGINT, &s_int, 0) > 0)
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return 1;
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return 0;
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}
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