Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com>
Co-authored-by: Tom Rodriguez <tom.rodriguez@oracle.com>
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
7151532: DCmd for hotspot native memory tracking
Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
Replace calls to os::javaTimeMillis() that are used to update the milliseconds since the last GC to an equivalent that uses a monotonically non-decreasing time source.
Reviewed-by: ysr, jmasa
Co-authored-by: Greg Lewis <glewis@eyesbeyond.com>
Co-authored-by: Jung-uk Kim <jkim@freebsd.org>
Co-authored-by: Christos Zoulas <christos@zoulas.com>
Co-authored-by: Landon Fuller <landonf@plausible.coop>
Co-authored-by: The FreeBSD Foundation <board@freebsdfoundation.org>
Co-authored-by: Michael Franz <mvfranz@gmail.com>
Co-authored-by: Roger Hoover <rhoover@apple.com>
Co-authored-by: Alexander Strange <astrange@apple.com>
Reviewed-by: kvn, twisti, jrose
Treat ProfileData in MDO's as a source of weak, not strong, roots. Fixes the bug for stop-world collection -- the case of concurrent collection will be fixed separately.
Reviewed-by: jcoomes, jmasa, kvn, never
For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.
Reviewed-by: jmasa