AspectC++

<h2 id="example">Example</h2>
<p>All calls to a specific function can be traced using an aspect, rather than inserting 'cerr' or print statements in many places:
</p>
aspect Tracer
{ 
   advice call("% %Iter::Reset(...)") : before()
   {
      cerr << "about to call Iter::Reset for " << JoinPoint::signature() << endl;
   }
};

<p>The Tracer aspect will print out a message before any call to %Iter::Reset.  The %Iter syntax
means that it will match all classes that end in Iter.
</p><p>Each 'matched' location in the source code is called a <a href="/facts/Join_point/hMNu97Vd">join point</a>—the advice is joined to (or advises) that code.
AspectC++ provides a join point API to provide and access to information about the join point.  For example, the function:
</p>
JoinPoint::signature()

<p>returns the name of the function (that matched %Iter::Reset) that is about to be called.
</p><p>The join point API also provides <a href="/facts/Compile-time/yCdI3oqn">compile-time</a> type information that can be used within an
aspect to access the type or the value of the arguments and the return type and return value of a
method or function.
</p>

<ul><li>Spinczyk, Olaf; Gal, Andreas; Schröder-Preikschat, Wolfgang (1 February 2002). <a href="https://dl.acm.org/doi/abs/10.5555/564092.564100">"AspectC++: an aspect-oriented extension to the C++ programming language"</a>. <i>Proceedings of the Fortieth International Conference on Tools Pacific: Objects for Internet, Mobile and Embedded Applications</i>. <a href="/facts/Australian_Computer_Society/Bkb4sTra">Australian Computer Society</a>: 53–60.</li></ul>
<ul><li>Spinczyk, Olaf; Lohmann, Daniel (1 October 2007). <a href="https://www.sciencedirect.com/science/article/abs/pii/S0950705107000524">"The design and implementation of AspectC++"</a>. <i><a href="/facts/Knowledge-Based_Systems/uocg0bY3">Knowledge-Based Systems</a></i>. 20 (7): 636–651. <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1016%2Fj.knosys.2007.05.004">10.1016/j.knosys.2007.05.004</a>. <a href="/facts/ISSN_(identifier)/DPAflDvU">ISSN</a> <a href="https://search.worldcat.org/issn/0950-7051">0950-7051</a>. Retrieved 31 March 2025.</li></ul>
<ul><li>Mahrenholz, D.; Spinczyk, O.; Schroder-Preikschat, W. (April 2002). <a href="https://ieeexplore.ieee.org/document/1003713">"Program instrumentation for debugging and monitoring with AspectC++"</a>. <i>Proceedings Fifth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing. ISIRC 2002</i>. <a href="/facts/Institute_of_Electrical_and_Electronics_Engineers/UddC4pUW">Institute of Electrical and Electronics Engineers</a>. pp. 249–256. <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1109%2FISORC.2002.1003713">10.1109/ISORC.2002.1003713</a>. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 0-7695-1558-4. Retrieved 31 March 2025.</li></ul>
<ul><li>Lohmann, Daniel; Spinczyk, Olaf (22 October 2006). <a href="https://dl.acm.org/doi/abs/10.1145/1176617.1176702">"Developing embedded software product lines with AspectC++"</a>. <i>Companion to the 21st ACM SIGPLAN Symposium on Object-oriented Programming Systems, Languages, and Applications</i>. <a href="/facts/Association_for_Computing_Machinery/abI2atlP">Association for Computing Machinery</a>: 740–742. <a href="/facts/Doi_(identifier)/muM9Etpq">doi</a>:<a href="https://doi.org/10.1145%2F1176617.1176702">10.1145/1176617.1176702</a>. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 1-59593-491-X.</li></ul>
<h2 id="external-links">External links</h2>
<ul><li><a href="http://www.aspectc.org/">AspectC++</a></li>
<li><a href="http://www.aosd.net">Articles on aspect-oriented programming and AspectC++ at past AOSD conferences</a></li></ul>

AspectC++ open-in-new

AspectC++