Re: Is There a C++ Timer Like the java.util.Timer

Victor Bazarov <v.bazarov@comcast.invalid>
Thu, 11 Jul 2013 16:08:51 -0400
On 7/11/2013 3:32 PM, K. Frank wrote:

Hello clusardi2 (and Victor)!

On Thursday, July 11, 2013 9:10:39 AM UTC-4, Victor Bazarov wrote:

On 7/11/2013 8:37 AM, clusardi wrote:

In java, they have a class where you can create a timer which will
repeatedly call a routine after a time period. Is there something
like this in C++ Visual Studio 2010?

In C++ there is no such thing, but there can be something in the library
for your platform (MS Windows, I am guessing). See 'SetTimer' Windows
API function.

Victor, or course, has answered your question -- no, not in
standard C++, but yes in the win32 api.

Having said that, it is worth noting that C++11 does introduce
the very basic functionality of being able to sleep for a
certain amount of time:

    void std::this_thread::sleep_until(...)
    void std::this_thread::sleep_for(...)

Prior to C++11, the standard was silent on sleep-type functions.

To add, there is a whole bunch of timer/clock/chrono functions in C++11
(see subclause 20.11 of the Standard), but none of them are designed to
make use of a callback, so you'd have to "roll your own" if your OS API
doesn't provide you with anything suitable.

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