https://mail.openjdk.java.net/pipermail/serviceability-dev/2019-October/029714.html

I saw C++ frames in `jhsdb jstack --mixed`, and they were mangled as below:


----------------- 8814 -----------------
"output reader" #15 daemon prio=5 tid=0x00007ff250365000 nid=0x226e runnable [0x00007ff2133f1000]
   java.lang.Thread.State: RUNNABLE
   JavaThread state: _thread_in_native
0x00007ff256f7587c __libc_read + 0x4c
0x00007ff237e9490e * sun.nio.ch.SocketDispatcher.read0(java.io.FileDescriptor, long, int) bci:0 (Interpreted frame)
0x00007ff237e84f4c * sun.nio.ch.SocketDispatcher.read(java.io.FileDescriptor, long, int) bci:4 line:47 (Interpreted frame)
0x00007ff237e84f4c * sun.nio.ch.NioSocketImpl.tryRead(java.io.FileDescriptor, byte[], int, int) bci:45 line:261 (Interpreted frame)
0x00007ff237e84f4c * sun.nio.ch.NioSocketImpl.implRead(byte[], int, int) bci:99 line:312 (Interpreted frame)
0x00007ff237e84f4c * sun.nio.ch.NioSocketImpl.read(byte[], int, int) bci:54 line:350 (Interpreted frame)
0x00007ff237e84f4c * sun.nio.ch.NioSocketImpl$1.read(byte[], int, int) bci:7 line:803 (Interpreted frame)
0x00007ff237e84f4c * java.net.Socket$SocketInputStream.read(byte[], int, int) bci:7 line:937 (Interpreted frame)
0x00007ff237e84f4c * java.net.Socket$SocketInputStream.read() bci:8 line:932 (Interpreted frame)
0x00007ff237e84f4c * java.io.FilterInputStream.read() bci:4 line:83 (Interpreted frame)
0x00007ff237e84f4c * jdk.jshell.execution.DemultiplexInput.run() bci:4 line:58 (Interpreted frame)
0x00007ff237e799ca <StubRoutines>
0x00007ff255a8fa4c _ZN9JavaCalls11call_helperEP9JavaValueRK12methodHandleP17JavaCallArgumentsP6Thread + 0x6ac
0x00007ff255a8cc1d _ZN9JavaCalls12call_virtualEP9JavaValueP5KlassP6SymbolS5_P17JavaCallArgumentsP6Thread + 0x33d
0x00007ff255a8ce3e _ZN9JavaCalls12call_virtualEP9JavaValue6HandleP5KlassP6SymbolS6_P6Thread + 0xbe
0x00007ff255bef3fe _ZL12thread_entryP10JavaThreadP6Thread + 0x12e
0x00007ff25658e912 _ZN10JavaThread17thread_main_innerEv + 0x312
0x00007ff25659998f _ZN10JavaThread3runEv + 0x29f
0x00007ff256594990 _ZN6Thread8call_runEv + 0x100
0x00007ff2561512f6 _ZL19thread_native_entryP6Thread + 0x116


We can demangle them via c++filt, but I think it is more convenience if jstack can show demangling symbols.