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author | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-11-07 18:03:12 +0000 |
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committer | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-11-07 18:03:12 +0000 |
commit | bc319093665db0e8b4ed102e1bd093c5b0f04039 (patch) | |
tree | efb773113c794090f7396315888f0785cf49f9ee | |
parent | 10b6409eb3c260189fc44c90110c7f33e85000e9 (diff) | |
download | ruby-bc319093665db0e8b4ed102e1bd093c5b0f04039.tar.gz |
* gc.c (vm_malloc_increase): check GVL before gc_rest_sweep().
vm_malloc_increase() can be called without GVL.
However, gc_rest_sweep() assumes acquiring GVL.
To avoid this problem, check GVL before gc_rest_sweep().
[Bug #9090]
This workaround introduces possibility to set malloc_limit as
wrong value (*1). However, this may be rare case. So I commit it.
*1: Without rest_sweep() here, gc_rest_sweep() can decrease
malloc_increase due to ruby_sized_xfree().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43574 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r-- | ChangeLog | 14 | ||||
-rw-r--r-- | gc.c | 2 |
2 files changed, 15 insertions, 1 deletions
@@ -1,3 +1,17 @@ +Fri Nov 8 02:44:29 2013 Koichi Sasada <ko1@atdot.net> + + * gc.c (vm_malloc_increase): check GVL before gc_rest_sweep(). + vm_malloc_increase() can be called without GVL. + However, gc_rest_sweep() assumes acquiring GVL. + To avoid this problem, check GVL before gc_rest_sweep(). + [Bug #9090] + + This workaround introduces possibility to set malloc_limit as + wrong value (*1). However, this may be rare case. So I commit it. + + *1: Without rest_sweep() here, gc_rest_sweep() can decrease + malloc_increase due to ruby_sized_xfree(). + Fri Nov 8 02:50:25 2013 Zachary Scott <e@zzak.io> * lib/securerandom.rb: [DOC] specify arguments passed to ::random_bytes @@ -5446,7 +5446,7 @@ vm_malloc_increase(rb_objspace_t *objspace, size_t new_size, size_t old_size, in else { retry: if (malloc_increase > malloc_limit) { - if (is_lazy_sweeping(heap_eden)) { + if (ruby_thread_has_gvl_p() && is_lazy_sweeping(heap_eden)) { gc_rest_sweep(objspace); /* rest_sweep can reduce malloc_increase */ goto retry; } |