On Mon, Aug 17, 2009 at 8:04 AM, Hunkeler Peter (KIUP 4) < [email protected]> wrote:
> >The JIT compiler can do things that a static compiler can't. The more > >frequently a method is used, the more optimisations can be applied, > >such as inlining other methods and branch table reorganisation. This > >results in code which can actually be faster than statically-compiled > >code. > > Does that mean that JIT compiled code is being monitored for its > efficiency and is kind of recompiled every so often? > Yes that is exactly what it means at the high level. > > > >That *is* meant to be an ironic statement, isn't it? > > Well, no. > > >If you use malloc() in a C program, then it's a good idea to > >care about free() as well, otherwise you can end up out of memory. > > There is no need to use malloc() in C or ALLOC in PL/1. You can write > your program using only automaic variables. The runtime takes care > of the memory management. This is what I was referring to. It is virtually impossible to build any C or C++ program (can't speak for PL/1) of any sophistication without using memory allocation. In larger applications, application specific memory management may be implemented in order to guarantee memory leakage does not occur. > > > I admit that todays JVMs have much more sophisticated memory management > code than HLL runtime environments provide. > > But the OPs argument I was responding to was that this very JVM memory > management was a reason against compiling Java code. My argument is > that Java's memory management concept doesn't have to be any different > between running interpreted versus running compiled code. > > -- > Peter Hunkeler > Credit Suisse > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
