From: Mickael Bosch <redacted>
Date: Fri, 9 Oct 2020 13:49:16 +0000 (+0200)
Subject: handle SIGUSR1 signal to run/stop the capture, UNIX only
X-Git-Url: http://sigrok.org/gitweb/?p=pulseview.git;a=commitdiff_plain;h=f1e9295aa5b9ff538c30b7c799a9c6b0efbfca3b

handle SIGUSR1 signal to run/stop the capture, UNIX only
---

diff --git a/main.cpp b/main.cpp
index a307159c..3a5ac29f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -350,10 +350,9 @@ int main(int argc, char *argv[])
 #ifdef ENABLE_SIGNALS
 			if (SignalHandler::prepare_signals()) {
 				SignalHandler *const handler = new SignalHandler(&w);
-				QObject::connect(handler, SIGNAL(int_received()),
-					&w, SLOT(close()));
-				QObject::connect(handler, SIGNAL(term_received()),
-					&w, SLOT(close()));
+				QObject::connect(handler, SIGNAL(int_received()), &w, SLOT(close()));
+				QObject::connect(handler, SIGNAL(term_received()), &w, SLOT(close()));
+				QObject::connect(handler, SIGNAL(usr1_received()), &w, SLOT(on_run_stop_clicked()));
 			} else
 				qWarning() << "Could not prepare signal handler.";
 #endif
diff --git a/pv/mainwindow.cpp b/pv/mainwindow.cpp
index 3889d480..4bf4f127 100644
--- a/pv/mainwindow.cpp
+++ b/pv/mainwindow.cpp
@@ -728,6 +728,11 @@ void MainWindow::on_run_stop_clicked()
 	}
 }
 
+void MainWindow::on_external_trigger()
+{
+	on_run_stop_clicked();
+}
+
 void MainWindow::on_settings_clicked()
 {
 	dialogs::Settings dlg(device_manager_);
diff --git a/pv/mainwindow.hpp b/pv/mainwindow.hpp
index c9a8ad26..5808a2f2 100644
--- a/pv/mainwindow.hpp
+++ b/pv/mainwindow.hpp
@@ -145,6 +145,9 @@ private Q_SLOTS:
 
 	void on_close_current_tab();
 
+public Q_SLOTS:
+	void on_external_trigger();
+
 private:
 	DeviceManager &device_manager_;
 
diff --git a/signalhandler.cpp b/signalhandler.cpp
index 14706261..d228718f 100644
--- a/signalhandler.cpp
+++ b/signalhandler.cpp
@@ -43,7 +43,8 @@ bool SignalHandler::prepare_signals()
 	sig_action.sa_flags = SA_RESTART;
 
 	if (sigaction(SIGINT, &sig_action, nullptr) != 0 ||
-		sigaction(SIGTERM, &sig_action, nullptr) != 0) {
+		sigaction(SIGTERM, &sig_action, nullptr) != 0 ||
+		sigaction(SIGUSR1, &sig_action, nullptr) != 0) {
 		close(sockets_[0]);
 		close(sockets_[1]);
 		return false;
@@ -78,6 +79,9 @@ void SignalHandler::on_socket_notifier_activated()
 	case SIGTERM:
 		Q_EMIT term_received();
 		break;
+	case SIGUSR1:
+		Q_EMIT usr1_received();
+		break;
 	}
 
 	socket_notifier_->setEnabled(true);
diff --git a/signalhandler.hpp b/signalhandler.hpp
index fad3ac39..0246dc99 100644
--- a/signalhandler.hpp
+++ b/signalhandler.hpp
@@ -37,6 +37,7 @@ public:
 Q_SIGNALS:
 	void int_received();
 	void term_received();
+	void usr1_received();
 
 private Q_SLOTS:
 	void on_socket_notifier_activated();