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bigdecimal.c: wrapper object before alloc

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* ext/bigdecimal/bigdecimal.c (VpNewRbClass): make wrapper object
  before result structs allocation and manage refcount for each
  elements to get rid of potential memory leak.

* ext/bigdecimal/bigdecimal.c (BigDecimal_global_new): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50650 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-05-27 08:02:28 +00:00
parent 2df5bb9ac1
commit bdf07741f3
2 changed files with 35 additions and 6 deletions
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14
ext/bigdecimal/bigdecimal.c
View file

@ -598,17 +598,17 @@ GetPositiveInt(VALUE v)
VP_EXPORT Real *
VpNewRbClass(size_t mx, const char *str, VALUE klass)
{
VALUE obj = TypedData_Wrap_Struct(klass, &BigDecimal_data_type, 0);
Real *pv = VpAlloc(mx,str);
pv->obj = TypedData_Wrap_Struct(klass, &BigDecimal_data_type, pv);
RTYPEDDATA_DATA(obj) = pv;
pv->obj = obj;
return pv;
}
VP_EXPORT Real *
VpCreateRbObject(size_t mx, const char *str)
{
Real *pv = VpAlloc(mx,str);
pv->obj = TypedData_Wrap_Struct(rb_cBigDecimal, &BigDecimal_data_type, pv);
return pv;
return VpNewRbClass(mx, str, rb_cBigDecimal);
}
#define VpAllocReal(prec) (Real *)VpMemAlloc(offsetof(Real, frac) + (prec) * sizeof(BDIGIT))
@ -2595,11 +2595,13 @@ BigDecimal_global_new(int argc, VALUE *argv, VALUE self)
{
ENTER(1);
Real *pv;
VALUE obj;
obj = TypedData_Wrap_Struct(rb_cBigDecimal, &BigDecimal_data_type, 0);
GUARD_OBJ(pv, BigDecimal_new(argc, argv));
if (ToValue(pv)) pv = VpCopy(NULL, pv);
pv->obj = TypedData_Wrap_Struct(rb_cBigDecimal, &BigDecimal_data_type, pv);
return pv->obj;
RTYPEDDATA_DATA(obj) = pv;
return pv->obj = obj;
}
/* call-seq:

27
test/bigdecimal/test_bigdecimal.rb
View file

@ -1552,4 +1552,31 @@ class TestBigDecimal < Test::Unit::TestCase
Thread.current.keys.to_s
EOS
end
def assert_no_memory_leak(code, *rest, **opt)
code = "5.times {1_000.times {begin #{code}; rescue NoMemoryError; end; GC.start}} if b"
super(["-rbigdecimal"],
"b = BigDecimal('10'); b.nil?; " \
"GC.add_stress_to_class(BigDecimal); "\
"#{code}", code, *rest, rss: true, **opt)
end
if EnvUtil.gc_stress_to_class?
def test_no_memory_leak_allocate
assert_no_memory_leak("BigDecimal.allocate")
end
def test_no_memory_leak_initialize
assert_no_memory_leak("BigDecimal.new")
end
def test_no_memory_leak_global_new
assert_no_memory_leak("BigDecimal('10')")
assert_no_memory_leak("BigDecimal(b)")
end
def test_no_memory_leak_create
assert_no_memory_leak("b + 10")
end
end
end