Reviewed-by: rehn, stuefe, dcubed, sspitsyn

Reviewed-by: andrew

Reviewed-by: andrew

Reviewed-by: shade, andrew

Reviewed-by: shade, apetushkov

Reviewed-by: dcubed, coleenp

Reviewed-by: egahlin, rwestberg

Reviewed-by: gziemski, mgronlun

Reviewed-by: kbarrett, dholmes, dcubed, egahlin

Reviewed-by: dholmes, alanb, rriggs

8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com

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: Prevent downgraded compilation tasks from recompiling.
Reviewed-by: sgehwolf, thartmann, andrew

Summary: Summary: os::readdir uses POSIX readdir, drop buffer arg, fix JFR uses.
Reviewed-by: coleenp, tschatzl, bsrbnd, shade, phh

Summary: implement os::set_native_thread_name() on windows, linux
Reviewed-by: sla, ctornqvi, simonis
Contributed-by: thomas.stuefe@sap.com

Summary: Add tag bit to all JNI weak handles
Reviewed-by: kbarrett, coleenp, tschatzl

Reviewed-by: tbell, asaha

Reviewed-by: erikj, dholmes

Summary: Introduce alignment-safe Copy::conjoint_swap and JVM_CopySwapMemory
Reviewed-by: mikael, dholmes

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

Reviewed-by: acorn, coleenp, kvn, vlivanov

Reviewed-by: tschatzl

Reviewed-by: dholmes

Reviewed-by: dholmes

Reviewed-by: bobv, dbuck

Reviewed-by: bobv, dbuck

8164480: Crash with assert(handler_address == SharedRuntime::compute_compiled_exc_handler(..) failed: Must be the same
Summary: Exception checking code needs to handle pre-allocated exceptions.
Reviewed-by: thartmann, kvn

Reviewed-by: dholmes

Reviewed-by: jrose, coleenp, ahgross, acorn, vlivanov

Summary: Bias compiler thread's resource area to mtCompiler
Reviewed-by: kvn, coleenp

Summary: Set UseLoopCounter ergonomically if on-stack-replacement is enabled. Print warning.
Reviewed-by: kvn

6651256: jstack: DeleteGlobalRef method call doesn't lead to descreasing of global refs count shown by jstack
Summary: jni_DeleteGlobalRef does not really release the jni handle, instead, set the handle point to JNIHandles::_deleted_handle which holds an oop instance (java/lang/Object) in Java heap and never be GC'ed. When counting number of global reference, it counts all the handles on the chain list, which includes the already deleted ones.
Reviewed-by: zgu, sla, coleenp
Contributed-by: yumin.qi@oracle.com

Reviewed-by: kvn, dholmes, bobv

Reviewed-by: kvn, dholmes, bobv

Summary: The GetOwnedMonitorInfo() should not return a pending monitor
Reviewed-by: dcubed

Summary: Fixed missing null checks on the result of CodeCache::find_blob() found by Parfait.
Reviewed-by: shade, kvn

Summary: Make appending found dead BasicHashtableEntrys to the free list atomic.
Reviewed-by: ehelin, shade

Reviewed-by: kbarrett, stefank

Reviewed-by: kbarrett, stefank

8143897: Weblogic12medrec assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true)) failed: Must be the same
Reviewed-by: kvn, mdoerr