Comparing wall time and resource usage across different programming environments

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Is there a particular software resource monitor that researchers or academics use to compare execution time and other resource usage metrics between programming environments? For instance, if I have a routine in C++, python and another in Matlab, that are all identical in function and similar implantations -how would I make an objective, measurable result comparison as to which was the most efficient process. Likewise is it a tool that could also analyze performance between versions of the same code to track improvements in processing efficiency. Please try to answer this question without generalizations like "oh, C++ is always more efficient than python and python will always be more efficient than Matlab."

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The correct way is to write tests. Get current time before actual algo starts, and get current time after it ends. There are ways to do that in c++, python and matlab You must not think of results as they are 100% precision because of system scheduling process etc, though it is a good way to compare before-after results. Good way to get more precision results is to run your code multiple times.