git: openjdk/loom: fibers: Generate appropriate stack traces for virtual threads and carriers

[duke]

Changeset: c375fd30
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2020-09-11 14:26:28 +0000
URL:       https://git.openjdk.java.net/loom/commit/c375fd30

Generate appropriate stack traces for virtual threads and carriers

! make/hotspot/symbols/symbols-unix
! src/hotspot/share/classfile/javaClasses.cpp
! src/hotspot/share/classfile/javaClasses.hpp
! src/hotspot/share/include/jvm.h
! src/hotspot/share/prims/jvm.cpp
! src/hotspot/share/runtime/continuation.cpp
! src/hotspot/share/runtime/globals.hpp
! src/hotspot/share/runtime/thread.hpp
! src/hotspot/share/services/threadService.cpp
! src/java.base/share/classes/java/lang/StackTraceElement.java
! src/java.base/share/classes/java/lang/Thread.java
! src/java.base/share/classes/java/lang/Throwable.java
! src/java.base/share/classes/java/lang/VirtualThread.java
! src/java.base/share/native/libjava/StackTraceElement.c
! src/java.base/share/native/libjava/Thread.c
! src/java.base/share/native/libjava/Throwable.c
! test/jdk/java/lang/Continuation/Basic.java
! test/jdk/java/lang/Thread/virtual/StackTraces.java
! test/jdk/java/lang/Thread/virtual/ThreadAPI.java
+ test/jdk/java/lang/Thread/virtual/stress/GetStackTraceALot.java