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52 lines
1.8 KiB
Plaintext
52 lines
1.8 KiB
Plaintext
[[Property:title|Timers]]
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[[Property:weight|1]]
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[[Property:uuid|325ac6e6-9660-891c-2605-dbeb621649f0]]
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This sample consist in a command line demonstrating the use of the <eiffel>TIMER</eiffel> (Timer) class to generate a periodic callback to a method. The sample creates a <eiffel>TIMER</eiffel> object and passes to it a delegate object. When the <eiffel>TIMER</eiffel> fires, the delegate is invoked, and a static method is called asynchronously by a worker thread in the thread pool.
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==Compiling==
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To compile the example:
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# Launch EiffelStudio.
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# Click '''Add project'''
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# Browse to ''$ISE_EIFFEL\examplesdotnet\threading\timers\''
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# Choose ''timers.ecf''
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# Choose the location where the project will be compiled, by default the same directory containing the configuration file.
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# Click '''Open'''.
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==Running==
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After you launch the sample, the following output appears:
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<code>
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Checking for status updates every two seconds
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<Hit Enter to terminate the sample>
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Checking Status.
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Checking Status.
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Checking Status.
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Checking Status.
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Checking Status.
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...
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</code>
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When the display is finished, the application wait for you to pressed the return key to finished the application.
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==Under the Hood==
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This application shows how to use the thread <eiffel>TIMER</eiffel>. The timer is launched:
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<code>
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create my_timer.make_with_callback (create {TIMER_CALLBACK}.make (Current, $check_status), Void, 0, 2000)
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</code>
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and calls the feature <eiffel>check_status</eiffel> that displays the message <code>"Checking Status."</code> every two seconds.
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This sample uses the following .NET types:
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* <eiffel>TIMER</eiffel>
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* <eiffel>TIMER_CALLBACK</eiffel>
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==Notes==
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This sample is translated from the example located in the Samples\Technologies\Threading\Timers subdirectory of the .NET Framework SDK samples directory of Microsoft Visual Studio .NET.
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