Download C++ Footprint and Performance Optimization by Rene Alexander, Graham Bensley PDF

By Rene Alexander, Graham Bensley

Different reports pointed out that this isn't a e-book for complex humans. that is precise. It used to be very valuable to me, even though. I did a few C++ and alertness improvement in highschool, yet placed it away and did not give it some thought a lot. Now while it got here time to accomplish a computationally-intensive simulation, i discovered myself with lovely obscure wisdom of C++, and the way it truly works. This ebook was once precisely on the correct point for me. it is a bridge among newbie and intermediate/advanced. plenty of sturdy useful wisdom. specialist but understandable writing type.

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For example, say a routine goes wrong after 100 iterations of a loop. You would need 100 run commands to get to that program state using a normal breakpoint. With the conditional breakpoint, you can tell the debugger to skip the first 100 iterations. Continue Sometimes this is also called Run . The continue is a run from whatever place in the code you might have reached with the debugger. Say you stop on a breakpoint and take a few single steps, you can decide to continue to the next breakpoint (or the end of the program if the debugger encounters no more breakpoints).

Sometimes it is even possible to switch to the program state of a previous call, making it possible to examine variables before the routine which is under investigation is called. By going back to CheckPassword() or even Main() you can see, for instance, what went wrong with the parameters received by A(). Watch A watch is basically a view on a piece of memory. During debugging, it is possible to check the value of variables, pointers, arrays, and even pieces of memory by putting a watch on a specific memory address.

For example, the parts to be optimized might very well be found in the fundamental layers of the software, on top of which the rest of the system was built. This is the case, for instance, with layers that closely interact with the hardware, the OS, or third-party libraries. Note that tinkering around here can affect the stability of the entire system. It is a good idea to put an expert on these kinds of jobs, preferably the original developer of the software (unless, of course, it was sheer incompetence that resulted in the performance problems).

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