add missing files to git

CppTimer.cpp

@@ -0,0 +1,97 @@
+#include "CppTimer.h"
+#include <fcntl.h>
+
+/**
+ * GNU GENERAL PUBLIC LICENSE
+ * Version 3, 29 June 2007
+ *
+ * (C) 2020, Bernd Porr <mail@bernporr.me.uk>
+ * 
+ * This is inspired by the timer_create man page.
+ **/
+
+CppTimer::CppTimer() {
+	// We create a static handler catches the signal SIG
+	sa.sa_flags = SA_SIGINFO;
+	sa.sa_sigaction = handler;
+	sigemptyset(&sa.sa_mask);
+	if (sigaction(SIG, &sa, NULL) == -1)
+		throw("Could not create signal handler");
+	
+	if(pipe(pipeFd) < 0)
+		throw("Could not create pipe");
+	
+	// Create the timer
+	sev.sigev_notify = SIGEV_SIGNAL;
+	sev.sigev_signo = SIG;
+	// Cruical is that the signal carries the pointer to this class instance here
+	// because the handler just handles anything that comes in!
+	sev.sigev_value.sival_ptr = this;
+	// create the timer
+	if (timer_create(CLOCKID, &sev, &timerid) == -1)
+		throw("Could not create timer");
+};
+
+void CppTimer::start(long nanosecs,std::function<void()> callbackIn, int type) {
+	switch(type){
+		case(PERIODIC):
+			//starts after specified period of nanoseconds
+			its.it_value.tv_sec = nanosecs / 1000000000;
+			its.it_value.tv_nsec = nanosecs % 1000000000;
+			its.it_interval.tv_sec = nanosecs / 1000000000;
+			its.it_interval.tv_nsec = nanosecs % 1000000000;
+			break;
+		case(ONESHOT):
+			//fires once after specified period of nanoseconds
+			its.it_value.tv_sec = nanosecs / 1000000000;
+			its.it_value.tv_nsec = nanosecs % 1000000000;
+			its.it_interval.tv_sec = 0;
+			its.it_interval.tv_nsec = 0;
+			break;
+	}
+	callback = callbackIn;
+	if (timer_settime(timerid, 0, &its, NULL) == -1)
+		throw("Could not start timer");
+	discardPipe();
+	running = true;
+}
+
+void CppTimer::discardPipe() {
+	char buf;
+	fcntl(pipeFd[0], F_SETFL, O_NONBLOCK);
+	while(read(pipeFd[0], &buf, 1) > 0);
+	fcntl(pipeFd[0], F_SETFL, 0);
+}
+
+void CppTimer::block()
+{
+	if(running)
+	{
+		char buf;
+		read(pipeFd[0], &buf, 1);
+	}
+}
+
+void CppTimer::stop() {
+	// disarm
+	struct itimerspec itsnew;
+	itsnew.it_value.tv_sec = 0;
+	itsnew.it_value.tv_nsec = 0;
+	itsnew.it_interval.tv_sec = 0;
+	itsnew.it_interval.tv_nsec = 0;
+	timer_settime(timerid, 0, &itsnew, &its);
+	running = false;
+}
+
+bool CppTimer::isRunning()
+{
+	return running;
+}
+
+CppTimer::~CppTimer() {
+	stop();
+	// delete the timer
+	timer_delete(timerid);
+	// default action for signal handling
+	signal(SIG, SIG_IGN);
+}

CppTimer.h

@@ -0,0 +1,85 @@
+#ifndef __CPP_TIMER_H_
+#define __CPP_TIMER_H_
+
+/**
+ * GNU GENERAL PUBLIC LICENSE
+ * Version 3, 29 June 2007
+ *
+ * (C) 2020, Bernd Porr <mail@bernporr.me.uk>
+ * 
+ * This is inspired by the timer_create man page.
+ **/
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <signal.h>
+#include <time.h>
+#include <functional>
+#include <atomic>
+
+#define CLOCKID CLOCK_MONOTONIC
+#define SIG SIGRTMIN
+
+/**
+ * Timer class which repeatedly fires. It's wrapper around the
+ * POSIX per-process timer.
+ **/
+class CppTimer {
+
+public:
+	static constexpr int PERIODIC = 0;
+	static constexpr int ONESHOT  = 1;
+	static constexpr long MS_TO_NS  = 1000000;
+	/**
+	 * Creates an instance of the timer and connects the
+	 * signal handler to the timer.
+	 **/
+	CppTimer();
+
+	/**
+	 * Starts the timer. The timer fires first after
+	 * the specified time in nanoseconds and then at
+	 * that interval in PERIODIC mode. In ONESHOT mode
+	 * the timer fires once after the specified time in
+	 * nanoseconds.
+	 **/
+	virtual void start(long nanosecs, std::function<void()> callbackIn, int type = PERIODIC); 
+
+	/**
+	* Stops the timer by disarming it. It can be re-started
+	* with start().
+	**/
+	virtual void stop();
+
+	/**
+	 * Destructor disarms the timer, deletes it and
+	 * disconnect the signal handler.
+	 **/
+	virtual ~CppTimer();
+	
+	bool isRunning();
+	
+	void block();
+
+private:
+	timer_t timerid = 0;
+	struct sigevent sev;
+	struct sigaction sa;
+	struct itimerspec its;
+	int pipeFd[2];
+	std::atomic<bool> running = false;
+	std::function<void()> callback;
+	void discardPipe();
+		
+	static void handler(int sig, siginfo_t *si, void *uc ) {
+		CppTimer *timer = reinterpret_cast<CppTimer *> (si->si_value.sival_ptr);
+		timer->callback();
+		char buf = '\n'; 
+		write(timer->pipeFd[1], &buf, 1);
+		timer->running = false;
+	}
+};
+
+
+#endif

debian/changelog

@@ -2,7 +2,7 @@ sigstoped (1.0.5) unstable; urgency=medium
     Configureable timout for applications to close their windows.
     Fix 5sec stall when switching from an application to be stopped to an application that was stopped before.
     Make Xinstance thread safe
- -- Uvos <carl@uvos.xyz>  Wed, 01 Jul Jun 2020 09:47:00 +0100
+-- Uvos <carl@uvos.xyz>  Mon, 16 Jun 2020 09:47:00 +0100
 
 sigstoped (1.0.4) unstable; urgency=medium
   Fix memory leak in XInstance::getTopLevelWindows()