8173715: Remove FlatProfiler
Summary: Obsoleted Xprof flag, removed FlatProfiler code
Reviewed-by: dholmes, coleenp, vlivanov, pliden

8173335: Improve logging for j.l.ref.reference processing
Summary: Add logs for each phases of references and stats for each worker threads
Reviewed-by: tschatzl, shade

8183121: Add information about scanned and skipped cards during UpdateRS
Summary: Log the number of scanned and skipped cards for the UpdateRS phase too.
Reviewed-by: mgerdin, sangheki

8183539: Remove G1RemSet::_into_cset_dirty_card_queue_set
Reviewed-by: tschatzl, mgerdin

8178148: Log more detailed information about scan rs phase
Summary: Add logging about the number of cards actually scanned, claimed and skipped during the Scan RS phase
Reviewed-by: ehelin, sangheki

8166191: Missing spaces in log message during heap expansion
Reviewed-by: tschatzl
Contributed-by: chihiro.ito@oracle.com

8177059: [TESTBUG] gc/g1/TestGCLogMessages.java fails on 32bit arm after changes for JDK-8155094
Summary: Provide a way in the test to check log messages on arbitrary conditions and implement this for this case.
Reviewed-by: mchernov, sjohanss

8155094: Add logging for long lasting methods found in JDK-8152948
Summary: Adds logging for DerivedPointerTable, TLAB preparation and resizing, and new collection set setup work
Reviewed-by: kbarrett, sangheki

8167679: G1 phase logging is messy
Reviewed-by: sjohanss, tschatzl

8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
Summary: The call to ClassLoaderDataGraph::clear_claimed_marks() during initial mark in g1CollectedHeap.cpp:4420 is misplaced.
Reviewed-by: tschatzl, kbarrett

8164660: MinimalVM is not tested with GC tests
Reviewed-by: jmasa, tschatzl

8157957: ClassNotFoundException: jdk.test.lib.JDKToolFinder
Reviewed-by: coleenp, gtriantafill, mseledtsov, iignatyev, dholmes, dsamersoff

8034842: Parallelize the Free CSet phase in G1
Reviewed-by: jmasa, ehelin

8153737: Unsupported Module
Reviewed-by: alanb, mchung, psandoz

8150068: Log the main G1 phases at info level
Reviewed-by: sjohanss, tschatzl

8150630: Add logging for ParScanThreadState merge phase
Summary: Improve visibility of the per-thread scan state merge phase by adding appropriate logging.
Reviewed-by: jmasa, tbenson

8076463: Add logging for the preserve CM referents task
Summary: Add logging and do minor refactoring to CM referents handling task.
Reviewed-by: jmasa

8145092: Use Unified Logging for the GC logging
Summary: JEP-271. VM changes contributed by brutisso, test changes contributed by david.
Reviewed-by: sjohanss, david, brutisso
Contributed-by: bengt.rutisson@oracle.com, david.lindholm@oralce.com

8060017: G1: Report heap sizing time
Summary: Report heap expansion time done on VM thread after collection. Previously this was included in "Other" time.
Reviewed-by: mgerdin, tschatzl

8069330: Adjustment of concurrent refinement thresholds does not take hot card cache into account
Summary: Measure HCC processing time separately and remove that time from the calculation of the refinement thresholds. HCC processing time is still taken into account for general pause time predictions.
Reviewed-by: tbenson, jmasa

8067013: Rename the com.oracle.java.testlibary package
Reviewed-by: dholmes, gtriantafill, sla
Contributed-by: alexander.kulyakhtin@oracle.com

8077400: Unnecessary and incorrect "Code Cache Roots" G1 log entry
Reviewed-by: tschatzl, brutisso, sangheki

Merge

8027962: Per-phase timing measurements for strong roots processing
Reviewed-by: tschatzl, ecaspole

8075586: Add @modules as needed to the open hotspot tests
Reviewed-by: sla, ctornqvi, lfoltan, mchung, alanb
Contributed-by: alexander.kulyakhtin@oracle.com

8067941: [TESTBUG] Fix tests for OS with 64K page size.
Reviewed-by: kvn, tschatzl, ctornqvi

8048179: Early reclaim of large objects that are referenced by a few objects
Summary: Push the remembered sets of large objects with few referenced into the dirty card queue at the beginning of the evacuation so that they may end up with zero remembered set entries at the end of the collection, and are potentially reclaimed. Also improve timing measurements of the early reclaim mechanism, and shorten flag names.
Reviewed-by: brutisso, jmasa, dfazunen

8027959: Early reclamation of large objects in G1
Summary: Try to reclaim humongous objects at every young collection after doing a conservative estimate of its liveness.
Reviewed-by: brutisso, mgerdin

8038928: gc/g1/TestGCLogMessages.java fail with "[Evacuation Failure'
Reviewed-by: ysr, brutisso, tschatzl

8019342: G1: High "Other" time most likely due to card redirtying
Summary: Parallelize card redirtying to decrease the time it takes.
Reviewed-by: brutisso

8029075: String deduplication in G1
Summary: Implementation of JEP 192, http://openjdk.java.net/jeps/192
Reviewed-by: brutisso, tschatzl, coleenp

8035654: Add times for evacuation failure handling in "Other" time
Summary: Detailed breakdown of time spent in the evacuation failure handling phases to make the "Other" time roughly correspond to the sum of its parts.
Reviewed-by: jwilhelm, jmasa

8035398: Add card redirty time in "Other" time in G1
Summary: Show the time taken by card redirtying during GC in a new "Redirty Cards" line.
Reviewed-by: jwilhelm, brutisso

8027295: Free CSet takes ~50% of young pause time
Summary: Improve fast card cache iteration and avoid taking locks when freeing the collection set.
Reviewed-by: brutisso

8035406: Improve data structure for Code Cache remembered sets
Summary: Change the code cache remembered sets data structure from a GrowableArray to a chunked list of nmethods. This makes the data structure more amenable to parallelization, and decreases freeing time.
Reviewed-by: mgerdin, brutisso