On Mon, 7 Dec 2020 05:01:27 GMT, Yumin Qi <mi...@openjdk.org> wrote: > Hi, Please review > Windows mapping for file into memory could not happen to reserved memory. > In mapping CDS archive we first reserve enough memory then before mapping, > release them. For cds archive and using class space, need split the whole > space into two, that is, release the whole reserved space and do reservation > to the two split spaces again, which is problematic that there is possibility > other thread or system can kick in to take the released space. > The fix is the first step of two steps: > 1) Do not split reserved memory; > 2) Remove splitting memory. > This fix is first step, for Windows and use requested mapping address, > reserved for cds archive and ccs on a contiguous space separately, so there > is no need to call split. If any reservation failed, release them, go to > other way, but do not do the 'real' split either. For Windows (and using > class space), the reserved space will be released anyway. > > Tests:tier1-5,tier7
This pull request has been closed without being integrated. ------------- PR: https://git.openjdk.java.net/jdk/pull/1657
