Hi
I am runing a java web application under FreeBSD 10.3, Because some reason we
must use the Oracle JDK. It all work fine. Even the Java Flight Recorder works
fine.
I have a monitor tools require to dynamic attach to the JVM. the attach can not
work.
# /usr/local/linux-oracle-jdk1.8.0/bin/jstack 20105
Exception in thread "main" java.io.IOException: Broken pipe
at sun.tools.attach.LinuxVirtualMachine.write(Native Method)
at
sun.tools.attach.LinuxVirtualMachine.writeString(LinuxVirtualMachine.java:311)
at
sun.tools.attach.LinuxVirtualMachine.execute(LinuxVirtualMachine.java:178)
at
sun.tools.attach.HotSpotVirtualMachine.executeCommand(HotSpotVirtualMachine.java:261)
at
sun.tools.attach.HotSpotVirtualMachine.remoteDataDump(HotSpotVirtualMachine.java:218)
at sun.tools.jstack.JStack.runThreadDump(JStack.java:181)
at sun.tools.jstack.JStack.main(JStack.java:116)
The unix domain socket (.java_pid20105) created in /tmp folder, but when jstack
write to it, It got an error.
I also tried use netcat to connect the unix socket, It also closed immediately.
truss show some message like this
=============
linux_clock_gettime(0x1,0x290cb958) = 0 (0x0)
linux_stat64("/tmp/.java_pid20105",0x290cbc7c,0x290cbc7c) = 0 (0x0)
geteuid() = 0 (0x0)
getegid() = 0 (0x0)
linux_stat64("/tmp/.java_pid20105",0x290cbd18,0x290cbd18) = 0 (0x0)
linux_socketcall(1,{ LINUX_SOCKET, 0x0 }) = 6 (0x6)
linux_socketcall(3,{ LINUX_GETSOCKNAME, 0x6e }) = 0 (0x0)
close(6) = 0 (0x0)
linux_clock_gettime(0x1,0x290cba3c) = 0 (0x0)
linux_clock_gettime(0x1,0x290cb9f8) = 0 (0x0)
linux_socketcall(1,{ LINUX_SOCKET, 0x0 }) = 6 (0x6)
linux_socketcall(3,{ LINUX_GETSOCKNAME, 0x6e }) = 0 (0x0)
linux_clock_gettime(0x1,0x290cb630) = 0 (0x0)
write(6,"1",1) ERR#32 'Broken pipe'
SIGNAL 13 (SIGPIPE)
linux_rt_sigreturn(0x290cbc18) ERR#32 'Broken pipe'
linux_open("/usr/share/locale/locale.alias",0x0,0666) = 7 (0x7)
linux_fstat64(0x7,0x290cb580) = 0 (0x0)
linux_mmap2(0x0,0x1000,0x3,0x22,0xffffffff,0x0) = 671535104 (0x2806d000)
read(7,"# Locale name alias data base.\n"...,4096) = 2512 (0x9d0)
linux_clock_gettime(0x1,0x7c39e120) = 0 (0x0)
read(7,0x2806d000,4096) = 0 (0x0)
close(7) = 0 (0x0)
munmap(0x2806d000,4096) = 0 (0x0)
===============
My FreeBSD version : 10.3-RELEASE-p6
idk version: linux-oracle-jdk18-8.73
linux base: linux_base-c6-6.7_1
—
YaoCL
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