Aashaka Shah wrote: > I recently came across ccache as I have an assignment to think of a novel > compiler design or related problem, and having a cache for compilers was > the first thing that came to my mind. I thought of trying it out on > QuantLib, a financial computation library.
Hi! It would interesting to have some more scientific research on this, since ccache is a rather pragmatic project. It's "memoization", I think. > I would like to know > > 1. Why multiple source files cannot take advantage of ccache ( Why other > types of compilations (multi-file compilation, linking, etc) will silently > fall back to running the real compiler) Well, depends on what you mean with "source" exactly. Basically when you have one source (.c), it would still read a lot of headers (.h) etc... But when you give the compiler more than one C/C++ source file, it will compile them one by one anyway. Looks like your build system is broken ? Do you have an example of the actual files you are trying to compile ? It would help when trying to understand what you are trying to do here. > 2. Where in the memory hierarchy(cache, main memory?) does the ccache > output reside? Does it work according to the default replacement policies > of the hardware cache? The ccache files are stored on the filesystem, so in the "secondary" ? Usually it's stored in RAM and written to disk, unless using a ramdisk. Using the memcached implementation also offers you other mixed options. https://en.wikipedia.org/wiki/Memcached (see the dev/memcached branch) /Anders _______________________________________________ ccache mailing list ccache@lists.samba.org https://lists.samba.org/mailman/listinfo/ccache
