我如何将Valgrind与Ruby一起使用？

Question

我已经按照valgrind-docs的建议编译了ruby(2.2.4).根据至少几个虽然模糊不清的资源,人们已经成功地使用了Valgrind和红宝石,但是更多的选择似乎存在于debugflags='-g' optflags='-O0' ./configure --with-valgrind--with-valgrind1.9.3

./doc/ChangeLog-1.9.3:62800:*configure.in:add --with-valgrind.

我所遇到的错误与类似的python问题中提到的错误相同,即使是基本的测试程序也会报告"参考丢失"/"可能丢失"的大量误报.

样本输出:

valgrind --tool=memcheck --leak-check=yes --max-stackframe=8382448 --track-origins=yes ruby test.rb

==15105== HEAP SUMMARY:
==15105==     in use at exit: 840,786 bytes in 8,050 blocks
==15105==   total heap usage: 10,496 allocs, 2,446 frees, 2,373,732 bytes allocated
==15105== 
==15105== 16 bytes in 1 blocks are possibly lost in loss record 87 of 5,245
==15105==    at 0x4C2ABD0: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==15105==    by 0x1511F4: objspace_xmalloc0 (gc.c:7780)
==15105==    by 0x1512CB: objspace_xmalloc (gc.c:7792)
==15105==    by 0x15153F: ruby_xmalloc (gc.c:7871)
==15105==    by 0x2E54CA: rb_class_subclass_add (class.c:41)
==15105==    by 0x2E546F: RCLASS_SET_SUPER (internal.h:602)
==15105==    by 0x2E58E8: rb_class_boot (class.c:205)
==15105==    by 0x2E687B: boot_defclass (class.c:537)
==15105==    by 0x2E6937: Init_class_hierarchy (class.c:554)
==15105==    by 0x193EEE: InitVM_Object (object.c:3371)
==15105==    by 0x1951C8: Init_Object (object.c:3596)
==15105==    by 0x15C07F: rb_call_inits (inits.c:23)
.....

Answer 1

我建议使用 ruby​​_memcheck

https://github.com/Shopify/ruby_memcheck

这个 gem 提供了一种在本机扩展 gem 上使用 Valgrind 的 memcheck 的合理方法。