導入NLTK期間Rubypython錯誤

Question

我在我的jRuby/Rails項目中命令「import nltk」存在問題。有趣的是，如果我在重新啓動webrick之後第一次在webrick服務器上運行帶有「import nltk」的代碼，那麼一切正常。任何其他嘗試運行代碼的錯誤如下所示。任何想法爲什麼發生這種情況？我的Python是2.7，jRuby 1.6.7。

JRuby中的代碼我稱之爲簡單：

RubyPython.start # start the Python interpreter 

nltk = RubyPython.import("nltk") 

RubyPython.stop # stop the Python interpreter 

以上代碼的第二個電話，然後錯誤後：

# 
# A fatal error has been detected by the Java Runtime Environment: 
# 
# SIGSEGV (0xb) at pc=0x89c9cc7a, pid=9774, tid=2319420224 
# 
# JRE version: 7.0_06-b24 
# Java VM: Java HotSpot(TM) Server VM (23.2-b09 mixed mode linux-x86) 
# Problematic frame: 
# C [multiarray.so+0x78c7a] _strided_zero_pad_data_copy+0x3106a 
# 
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again 
# 
# If you would like to submit a bug report, please visit: 
# http://bugreport.sun.com/bugreport/crash.jsp 
# The crash happened outside the Java Virtual Machine in native code. 
# See problematic frame for where to report the bug. 
# 

--------------- T H R E A D --------------- 

Current thread (0x0a646400): JavaThread "RubyThread-13: /usr/lib/jruby/lib/ruby/1.8/webrick/server.rb:162" daemon [_thread_in_native, id=9817, stack(0x8a1f8000,0x8a3f9000)] 

siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x00000001 

Registers: 
EAX=0x00000001, EBX=0x89d28ff4, ECX=0x00000001, EDX=0x8b879ad8 
ESP=0x8a3c7d94, EBP=0x00000000, ESI=0x89d2c860, EDI=0x89d2c860 
EIP=0x89c9cc7a, EFLAGS=0x00210202, CR2=0x00000001 

Top of Stack: (sp=0x8a3c7d94) 
0x8a3c7d94: 8b28f16c 8b2c78b8 89c303bd 89d28ff4 
0x8a3c7da4: 89ddd21b 89d28ff4 89fb2680 89c7fa64 
0x8a3c7db4: 89fb2680 89d2ba80 8b72aacc 89e536a4 
0x8a3c7dc4: 89d28ff4 8bb85d54 8b879ad0 89cb601c 
0x8a3c7dd4: 00000011 89d2bb60 8b829780 89e97d99 
0x8a3c7de4: 00000007 8bb42840 8c54d71c 89d28ff4 
0x8a3c7df4: 8b4f8c88 89d2c860 00000000 89cb80dc 
0x8a3c7e04: 8b879ad8 89d2c860 00000004 00000000 

Instructions: (pc=0x89c9cc7a) 
0x89c9cc5a: 89 04 24 e8 ae 25 f9 ff 85 c0 75 8a 83 c4 5c 5b 
0x89c9cc6a: 5e 5f 5d c3 66 90 8b 54 24 70 8b 02 85 c0 74 ec 
0x89c9cc7a: 83 00 01 83 c4 5c 5b 5e 5f 5d c3 8d 74 26 00 8d 
0x89c9cc8a: bc 27 00 00 00 00 53 83 ec 18 8b 54 24 20 e8 fa 

Register to memory mapping: 

EAX=0x00000001 is an unknown value 
EBX=0x89d28ff4: <offset 0x104ff4> in /usr/lib/python2.7/dist-packages/numpy/core/multiarray.so at 0x89c24000 
ECX=0x00000001 is an unknown value 
EDX=0x8b879ad8 is an unknown value 
ESP=0x8a3c7d94 is pointing into the stack for thread: 0x0a646400 
EBP=0x00000000 is an unknown value 
ESI=0x89d2c860: <offset 0x108860> in /usr/lib/python2.7/dist-packages/numpy/core/multiarray.so at 0x89c24000 
EDI=0x89d2c860: <offset 0x108860> in /usr/lib/python2.7/dist-packages/numpy/core/multiarray.so at 0x89c24000 


Stack: [0x8a1f8000,0x8a3f9000], sp=0x8a3c7d94, free space=1855k 
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) 
C [multiarray.so+0x78c7a] _strided_zero_pad_data_copy+0x3106a 

[error occurred during error reporting (printing native stack), id 0xb] 

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) 
j com.kenai.jffi.Foreign.invokeArrayO1Int32(J[BLjava/lang/Object;III)I+0 
....... 

Answer 1

看起來rubypython做它的魔力與FFI。如果您正在使用的FFI二進制文件（隨JRuby附帶）和/或JVM出現問題，那麼當JVM出現段錯誤時，您可以做的事情不多。

嘗試一個更新的JRuby版本和/或JVM，但除此之外，恐怕你不會在這裏得到很多幫助。

也就是說，它適用於我的Mac。

$ cat test.rb    
require "rubypython" 

RubyPython.start # start the Python interpreter 

cPickle = RubyPython.import("cPickle") 
p cPickle.dumps("Testing RubyPython.").rubify 

RubyPython.stop # stop the Python interpreter 
$ jruby -v; jruby -rubygems test.rb 
jruby 1.7.0.preview2 (1.9.3p203) 2012-08-22 ff42564 on Java HotSpot(TM) 64-Bit Server VM 1.7.0_04-b21 [darwin-x86_64] 
"S'Testing RubyPython.'\np1\n."