Adding upstream version 1.44.3.upstream/1.44.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/ml/dlib/examples/timer_ex.cpp b/ml/dlib/examples/timer_ex.cpp
new file mode 100644
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--- /dev/null
+++ b/ml/dlib/examples/timer_ex.cpp
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+// The contents of this file are in the public domain. See LICENSE_FOR_EXAMPLE_PROGRAMS.txt
+
+
+/*
+    This is an example illustrating the use of the timer object from the dlib C++ Library.
+
+    The timer is an object that calls some user specified member function at regular
+    intervals from another thread.
+*/
+
+
+#include <dlib/timer.h>
+#include <dlib/misc_api.h> // for dlib::sleep
+#include <iostream>
+
+using namespace dlib;
+using namespace std;
+
+// ----------------------------------------------------------------------------------------
+
+class timer_example
+{
+public:
+    void action_function()
+    {
+        // print out a message so we can see that this function is being triggered
+        cout << "action_function() called" << endl;
+    }
+};
+
+// ----------------------------------------------------------------------------------------
+
+int main()
+{
+    timer_example e;
+
+    // Here we construct our timer object.  It needs two things.  The second argument is
+    // the member function it is going to call at regular intervals and the first argument
+    // is the object instance it will call that member function on.
+    timer<timer_example> t(e, &timer_example::action_function);
+
+    // Set the timer object to trigger every second
+    t.set_delay_time(1000);
+
+    // Start the timer.  It will start calling the action function 1 second from this call
+    // to start.
+    t.start();
+
+    // Sleep for 10 seconds before letting the program end.  
+    dlib::sleep(10000);
+
+    // The timer will destruct itself properly and stop calling the action_function.
+}
+
+// ----------------------------------------------------------------------------------------
+