> Migrate font code from jdk.internal.misc.Unsafe to using FFM. > This reduces the coupling between the java.desktop module and the internals > of the java.base module. > > The code being changed here is not particularly performance sensitive, and it > is not executed in the most common cases. > The main impact performance-wise is a total of around 37ms in initialisation > costs on my x64 macbook. > A minimal program that just draws a string to an image - does not even put up > a window - runs at around 690-700ms. > There's variability in that number and the overall time for a JDK without the > change is around (660-670ms) > In the small test, this is the first and only use of FFM, so the one-off part > cost should move elsewhere when FFM starts > to be used earlier in the JDK itself.
Phil Race has updated the pull request incrementally with one additional commit since the last revision: 8334495 ------------- Changes: - all: https://git.openjdk.org/jdk/pull/19777/files - new: https://git.openjdk.org/jdk/pull/19777/files/aa566257..99acf847 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=19777&range=01 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19777&range=00-01 Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/19777.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/19777/head:pull/19777 PR: https://git.openjdk.org/jdk/pull/19777
