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ruby_atomic.h: atomic VALUE operations

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* ruby_atomic.h (ATOMIC_VALUE_EXCHANGE, ATOMIC_VALUE_CAS): add
  atomic operations for VALUE.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51498 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-08-06 01:44:03 +00:00
parent ff7eb4c656
commit ec10c033a7
5 changed files with 76 additions and 12 deletions
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6
node.c
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@ -1090,11 +1090,9 @@ rb_alloc_tmp_buffer(volatile VALUE *store, long len)
void
rb_free_tmp_buffer(volatile VALUE *store)
{
VALUE s = *store;
*store = 0;
VALUE s = ATOMIC_VALUE_EXCHANGE(*store, 0);
if (s) {
void *ptr = RNODE(s)->u1.node;
RNODE(s)->u1.node = 0;
void *ptr = ATOMIC_PTR_EXCHANGE(RNODE(s)->u1.node, 0);
RNODE(s)->u3.cnt = 0;
xfree(ptr);
}