1 files changed, 130 insertions, 0 deletions
diff --git a/src/lib/base/Stopwatch.cpp b/src/lib/base/Stopwatch.cpp
new file mode 100644
index 0000000..b9ceb85
--- /dev/null
+++ b/src/lib/base/Stopwatch.cpp
@@ -0,0 +1,130 @@
+/*
+ * barrier -- mouse and keyboard sharing utility
+ * Copyright (C) 2012-2016 Symless Ltd.
+ * Copyright (C) 2002 Chris Schoeneman
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file LICENSE that should have accompanied this file.
+ * 
+ * This package 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "base/Stopwatch.h"
+#include "arch/Arch.h"
+
+//
+// Stopwatch
+//
+
+Stopwatch::Stopwatch(bool triggered) :
+    m_mark(0.0),
+    m_triggered(triggered),
+    m_stopped(triggered)
+{
+    if (!triggered) {
+        m_mark = ARCH->time();
+    }
+}
+
+Stopwatch::~Stopwatch()
+{
+    // do nothing
+}
+
+double
+Stopwatch::reset()
+{
+    if (m_stopped) {
+        const double dt = m_mark;
+        m_mark = 0.0;
+        return dt;
+    }
+    else {
+        const double t    = ARCH->time();
+        const double dt = t - m_mark;
+        m_mark = t;
+        return dt;
+    }
+}
+
+void
+Stopwatch::stop()
+{
+    if (m_stopped) {
+        return;
+    }
+
+    // save the elapsed time
+    m_mark      = ARCH->time() - m_mark;
+    m_stopped = true;
+}
+
+void
+Stopwatch::start()
+{
+    m_triggered = false;
+    if (!m_stopped) {
+        return;
+    }
+
+    // set the mark such that it reports the time elapsed at stop()
+    m_mark      = ARCH->time() - m_mark;
+    m_stopped = false;
+}
+
+void
+Stopwatch::setTrigger()
+{
+    stop();
+    m_triggered = true;
+}
+
+double
+Stopwatch::getTime()
+{
+    if (m_triggered) {
+        const double dt = m_mark;
+        start();
+        return dt;
+    }
+    else if (m_stopped) {
+        return m_mark;
+    }
+    else {
+        return ARCH->time() - m_mark;
+    }
+}
+
+Stopwatch::operator double()
+{
+    return getTime();
+}
+
+bool
+Stopwatch::isStopped() const
+{
+    return m_stopped;
+}
+
+double
+Stopwatch::getTime() const
+{
+    if (m_stopped) {
+        return m_mark;
+    }
+    else {
+        return ARCH->time() - m_mark;
+    }
+}
+
+Stopwatch::operator double() const
+{
+    return getTime();
+}