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authorjam@chromium.org <jam@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2009-11-05 21:53:08 +0000
committerjam@chromium.org <jam@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2009-11-05 21:53:08 +0000
commit877d55dcd3e01d1db858f154a1f369e76b2ebaf2 (patch)
treeee2364ca767826deed3d541603d6c92ca2f0062e /base/ref_counted.h
parentaaa47ee9d83f773d37aa4fd4a04097425ce62063 (diff)
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First patch in making destructors of refcounted objects private.
BUG=26749 Review URL: http://codereview.chromium.org/360042 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31136 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/ref_counted.h')
-rw-r--r--base/ref_counted.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/base/ref_counted.h b/base/ref_counted.h
index ea532a4..f2e4327 100644
--- a/base/ref_counted.h
+++ b/base/ref_counted.h
@@ -71,8 +71,13 @@ class RefCountedThreadSafeBase {
//
// class MyFoo : public base::RefCounted<MyFoo> {
// ...
+// private:
+// friend class base::RefCounted<MyFoo>;
+// ~MyFoo();
// };
//
+// You should always make your destructor private, to avoid any code deleting
+// the object accidently while there are references to it.
template <class T>
class RefCounted : public subtle::RefCountedBase {
public:
@@ -115,10 +120,10 @@ struct DefaultRefCountedThreadSafeTraits {
// ...
// };
//
-// If you're using the default trait, then you may choose to add compile time
+// If you're using the default trait, then you should add compile time
// asserts that no one else is deleting your object. i.e.
// private:
-// friend struct base::RefCountedThreadSafe<MyFoo>;
+// friend class base::RefCountedThreadSafe<MyFoo>;
// ~MyFoo();
template <class T, typename Traits = DefaultRefCountedThreadSafeTraits<T> >
class RefCountedThreadSafe : public subtle::RefCountedThreadSafeBase {