Summary: Use notify_unload_class() to post JFR class unload events instead of doing a separate traversal of the class loader data graph
Reviewed-by: lfoltan, coleenp, mgronlun, egahlin

8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

Summary: Backport from JDK9
Reviewed-by: dholmes, coffeys

Reviewed-by: dholmes, ehelin

Reviewed-by: dholmes, ehelin

Summary: MetadataOnStackMark must be done before calling free_deallocate_list().
Reviewed-by: coleenp, sspitsyn

Reviewed-by: mgerdin, stefank

Reviewed-by: sla, stefank

Reviewed-by: mgerdin, coleenp, bdelsart

Reviewed-by: brutisso, mgerdin, tschatzl

8047812: Ensure ClassLoaderDataGraph::classes_unloading_do only delivers klasses from CLDs with non-reclaimed class loader oops
Reviewed-by: coleenp, sspitsyn, ehelin

8081202: Hotspot compile warning: "Invalid suffix on literal; C++11 requires a space between literal and identifier"
Summary: Need to add a space between macro identifier and string literal
Reviewed-by: bpittore, stefank, dholmes, kbarrett

Reviewed-by: coleenp, sspitsyn

Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
Contributed-by: stefan.karlsson@oracle.com, mikael.gerdin@oracle.com

8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti

Summary: Only prune metaspace virtual spaces at safepoint so walking them is safe outside a safepoint.
Reviewed-by: mgerdin, mgronlun, hseigel, stefank

Reviewed-by: coleenp, mgerdin

Summary: Remove search in system dictionary and hacks, replace with verifying in CLD::_klasses list.
Reviewed-by: dcubed, acorn

8047812: Ensure ClassLoaderDataGraph::classes_unloading_do only delivers klasses from CLDs with non-reclaimed class loader oops
Reviewed-by: coleenp, sspitsyn, ehelin

Summary: Metaspace::contains cannot look at purged metaspaces while CMS concurrently deallocates them.
Reviewed-by: mgerdin, sspitsyn, jmasa

Reviewed-by: dholmes, egahlin

Summary: Rewrite of the getLoadedClasses() method implementation to include anonymous classes.
Reviewed-by: coleenp, sspitsyn

Summary: Enable CHECK_UNHANDLED_OOPS in fastdebug builds across all supported platforms.
Reviewed-by: coleenp, hseigel, dholmes, stefank, twisti, ihse, rdurbin
Contributed-by: lois.foltan@oracle.com

Reviewed-by: acorn, coleenp, sla
Contributed-by: NKaren Kinnear &lt;karen.kinnear@oracle.com&gt;, Bengt Rutisson &lt;bengt.rutisson@oracle.com&gt;, Calvin Cheung &lt;calvin.cheung@oracle.com&gt;, Erik Gahlin &lt;erik.gahlin@oracle.com&gt;, Erik Helin &lt;erik.helin@oracle.com&gt;, Jesper Wilhelmsson &lt;jesper.wilhelmsson@oracle.com&gt;, Keith McGuigan &lt;keith.mcguigan@oracle.com&gt;, Mattias Tobiasson &lt;mattias.tobiasson@oracle.com&gt;, Markus Gronlund &lt;markus.gronlund@oracle.com&gt;, Mikael Auno &lt;mikael.auno@oracle.com&gt;, Nils Eliasson &lt;nils.eliasson@oracle.com&gt;, Nils Loodin &lt;nils.loodin@oracle.com&gt;, Rickard Backman &lt;rickard.backman@oracle.com&gt;, Staffan Larsen &lt;staffan.larsen@oracle.com&gt;, Stefan Karlsson &lt;stefan.karlsson@oracle.com&gt;, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>

Summary: Call this function from the ClassLoaderData destructor instead of the system dictionary walk.
Reviewed-by: stefank, mgerdin

Summary: Move initialization of dependencies to before allocation of CLD
Reviewed-by: stefank, coleenp

Summary: Refactor the CLD dependency list into a separate class. Use an ObjectLocker to synchronize additions to the CLD dependency list.
Reviewed-by: stefank, coleenp

Reviewed-by: kvn, jrose

Summary: Check for exception during SystemDictionary::resolve_instance_class_or_null() and clean up.
Reviewed-by: coleenp, acorn, hseigel, minqi
Contributed-by: ioi.lam@oracle.com

Reviewed-by: mgerdin, coleenp

Summary: Restructure initialization of ClassLoaderData to not add a new instance if init_dependencies fail
Reviewed-by: stefank, coleenp

Reviewed-by: mgerdin, coleenp, johnc

Summary: jcmd <pid> GC.class_stats (UnlockDiagnosticVMOptions)
Reviewed-by: coleenp, hseigel, sla, acorn
Contributed-by: ioi.lam@oracle.com

Summary: Added on_stack bit to flags.  Also MetadataMarkOnStack is used for more than JVMTI so had to be moved.
Reviewed-by: dholmes, stefank

Reviewed-by: coleenp

Summary: Move the handelization of 'last' to a point before the GC might enter.
Reviewed-by: dholmes, sspitsyn, coleenp

Summary: Add klass_holder() to return either mirror or class_loader depending on if the class is anonymous or not.
Reviewed-by: stefank, jrose

Reviewed-by: johnc, coleenp

Summary: Add ClassLoaderData object for each anonymous class with metaspaces to allocate in.
Reviewed-by: twisti, jrose, stefank

Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: Njmasa &lt;jon.masamitsu@oracle.com&gt;, stefank &lt;stefan.karlsson@oracle.com&gt;, mgerdin &lt;mikael.gerdin@oracle.com&gt;, never <tom.rodriguez@oracle.com>