Summary: fixed build failure on Windows

Test Plan: build successfully on Windows

Reviewed-by: zhengxiaolinX

Issue: https://github.com/alibaba/dragonwell8/issues/112

Summary: Add Hotspot code of the Wisp implementation

Test Plan: all Wisp tests

Reviewed-by: yuleil, shiyuexw, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/113

Summary:
- From http://hg.openjdk.java.net/mlvm/mlvm/hotspot/file/4cd7d914b0e3/coro-simple.patch.
- Resolve trivial conflicts in: systemDictionary.hpp, thread.cpp, debug.hpp.
- Add an option "EnableCoroutine".

Test Plan: run jtreg tests

Reviewed-by: yuleil, shiyuexw, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/113

This reverts commit 5382b8e0.

Reviewers: 效山, 芳玺, 传胜, 三红, yumin.qi

Reviewed By: 三红, 芳玺, 效山, 卓仁

Differential Revision: https://aone.alibaba-inc.com/code/D815657

Reviewed-by: dcubed, coleenp

Reviewed-by: shade, mdoerr

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

8206454: [8u] os::current_stack_pointer() fails to compile on later Windows compilers (warning C4172: returning address of local variable)
Reviewed-by: dholmes, kbarrett

Summary: The inline assembler for the S390 (S390 and not _LP64) has src and dst reversed thereby corrupting data
Reviewed-by: shade
Contributed-by: NMartin Balao <mbalao@redhat.com>

Reviewed-by: aph

Reviewed-by: roland

8161598: Kitchensink fails: assert(nm->insts_contains(original_pc)) failed: original PC must be in nmethod/CompiledMethod
Reviewed-by: dlong

Reviewed-by: dholmes, alanbur

Reviewed-by: dholmes, alanbur

Summary: Using new sysconf and sysinfo API on Solaris 12, avoid using libpicl and libkstat.
Reviewed-by: kvn

Summary: Using new sysconf and sysinfo API on Solaris 12, avoid using libpicl and libkstat.
Reviewed-by: kvn

Reviewed-by: kvn, shade

8161598: Kitchensink fails: assert(nm->insts_contains(original_pc)) failed: original PC must be in nmethod/CompiledMethod
Reviewed-by: dlong

Reviewed-by: dholmes, aph
Contributed-by: NAndrew Haley <aph@redhat.com>

Reviewed-by: stuefe, coleenp, roland

Reviewed-by: kvn, twisti, stuefe

Reviewed-by: kvn, twisti, stuefe

Summary: Recognize the T7/M7 platform.
Reviewed-by: dcubed, kvn, jmasa

Summary: check cacheline sine only for one core on sun4v SPARC systems.
Reviewed-by: kvn

Summary: check cacheline sine only for one core on sun4v SPARC systems.
Reviewed-by: kvn

Summary: fix typo in GPL header
Reviewed-by: kvn, dholmes

Summary: Also improve check for Safepoints in signal handler.
Reviewed-by: kvn, simonis

Summary: Chcek both l2-dcache-line-size and l2-cache-line-size properties to determine the size of the line
Reviewed-by: kvn

Summary: Optimize traversals of the PICL tree
Reviewed-by: kvn

Reviewed-by: dholmes, coleenp

Summary: Chcek both l2-dcache-line-size and l2-cache-line-size properties to determine the size of the line
Reviewed-by: kvn

Summary: Optimize traversals of the PICL tree
Reviewed-by: kvn

Reviewed-by: roland, kvn

Summary: Crashes were caused by not disabling UseMemSetInBOT as should be done on sparc. Added support for picking up blkinit as a platform feature if available on Linux sparc. This is needed to avoid enabling UseMemSetInBOT when running on this platform.
Reviewed-by: jmasa, brutisso

Summary: Only enable the assert for current_stack_pointer after stub routines become available.
Reviewed-by: dholmes, roland, lfoltan

Summary: Use mmap call without MAP_FIXED so we avoid corrupting already allocated memory
Reviewed-by: coleenp, dsimms

Summary: Use mmap call without MAP_FIXED so we avoid corrupting already allocated memory
Reviewed-by: coleenp, dsimms

Reviewed-by: kvn

8058345: Refactor native stack printing from vmError.cpp to debug.cpp to make it available in gdb as well
Summary: Also fix stack trace on x86 to enable walking of runtime stubs and native wrappers
Reviewed-by: kvn