Summary:
TRACE_REQUEST_FUNC(ThreadAllocationStatistics) in jfrPeriodic.cpp
void JfrCheckpointThreadClosure::do_thread(Thread* t) in jfrType.cpp

Test Plan: jdk/test/jdk/jfr

Reviewed-by: kelthuzadx, zhengxiaolinX

Issue: https://github.com/alibaba/dragonwell8/issues/134

Summary:

Test Plan: jdk/test/jdk/jfr

Reviewed-by: zhengxiaolinX, yuleil

Issue: https://github.com/alibaba/dragonwell8/issues/127

Summary:

Test Plan: jdk/test/jdk/jfr/event/runtime/TestThreadStartEndEvents.java

Reviewed-by: zhengxiaolinX, yuleil

Issue: https://github.com/alibaba/dragonwell8/issues/127

Summary: fixed build failure on Windows

Test Plan: build successfully on Windows

Reviewed-by: zhengxiaolinX

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

Summary:
SafepointStatistics is a periodic event, both events are experimental
now and disbaled by default

Test Plan:
jdk/test/jdk/jfr/event/runtime/TestSafepointEvents.java
jdk/test/jdk/jfr/event/compiler/TestHugeObjectAllocationSample.java
jdk/test/jdk/jfr/event/metadata/TestLookForUntestedEvents.java

Reviewed-by: kuaiwei

Issue: https://github.com/alibaba/dragonwell8/issues/116

Summary: make EnableJFR obsolete

Test Plan: java -XX:+/-EnableJFR -version

Reviewed-by: zhengxiaolinX

Issue: https://github.com/alibaba/dragonwell8/issues/119

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary:

Test Plan: jdk/jfr

Reviewed-by: yuleil

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

Summary: Change the Wisp flag to experimental

Test Plan: all Wisp tests

Reviewed-by: yuleil, shiyuexw, sanhong

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

Summary: Fix build failure of the two platforms

Test Plan: Successfully generate builds of the two platforms

Reviewed-by: yuleil, shiyuexw, sanhong

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

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

This reverts commit 6585eb9c.

Summary: Bug fixes for JKU coroutine
The JKU patch has several flaws:
1. When using JDI to debug coroutine, it may crash because the _switchTo intrinsic entry will change to the interpreter one, which is a SHOULD_NOT_REACH_HERE().
2. Change miscellaneous thread-local data structures to coroutine-local level during _switchTo phase.
3. Disable making zombies of _switchTo alike intrinsic things.
4. Fix multiple mem leak problems for coroutine data structures.
5. Create an empty JNIHandleBlock for the first Java call.
6. The stack layout of Coroutine doesn't align with 16 bytes on x86_64 which will cause some float point instructions to throw an sig fault.
7. etc.

Test Plan: Coroutine 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

Summary: added help methods to Asserts.java

Test Plan: hotspot/test

Reviewed-by: kuaiwei, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/108

This reverts commit 5382b8e0.

This reverts commit e1d80ec1.

This reverts commit c7503dc8.

This reverts commit 174fa73f.

This reverts commit e8704b92.

This reverts commit 7a01e5e2.

This reverts commit ca5fefe8.

Reviewed-by: rehn, egahlin

Reviewed-by: neugens
Contributed-by: asemenov@azul.com

8233197: Invert JvmtiExport::post_vm_initialized() and Jfr:on_vm_start() start-up order for correct option parsing
8246703: [TESTBUG] Add test for JDK-8233197
Reviewed-by: aph, adinn, neugens

Summary: Print Tenant ID in GC log of tenant triggered GC

Test Plan: hotspot/test/multi-tenant/

Reviewed-by: luchsh, mmyxym

Issue: https://github.com/alibaba/dragonwell8/issues/102