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| author | darin@chromium.org <darin@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2009-09-28 18:12:55 +0000 |
|---|---|---|
| committer | darin@chromium.org <darin@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2009-09-28 18:12:55 +0000 |
| commit | 13f383ff5fc8ff095501794d4ce758f0067ff9b5 (patch) | |
| tree | ceb1d08f38759bf8805ede009924a990bae496e5 /base/ref_counted.h | |
| parent | f61f331824ac9c98684a886be0d918aefe69d3ce (diff) | |
| download | chromium_src-13f383ff5fc8ff095501794d4ce758f0067ff9b5.zip chromium_src-13f383ff5fc8ff095501794d4ce758f0067ff9b5.tar.gz chromium_src-13f383ff5fc8ff095501794d4ce758f0067ff9b5.tar.bz2 | |
Assert that thread-safe reference counting is used with
cross-thread NewRunnableMethod.
This assertion caught such an error in VisitedLinkMaster!
My approach, modify RunnableMethodTraits<T> to assert that
when ReleaseCallee happens on a different thread from
RetainCallee that the type supports thread-safe reference
counting. I do this by adding a static method to both
RefCounted<T> and RefCountedThreadSafe<T>.
This results in a little ugliness in cases where people
implement AddRef and Release by hand (to make the no-ops).
There may be a nicer way to deal with those few cases.
R=brettw
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/251012
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@27379 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/ref_counted.h')
| -rw-r--r-- | base/ref_counted.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/base/ref_counted.h b/base/ref_counted.h index 097d16e..70536b9 100644 --- a/base/ref_counted.h +++ b/base/ref_counted.h @@ -14,6 +14,8 @@ namespace subtle { class RefCountedBase { public: + static bool ImplementsThreadSafeReferenceCounting() { return false; } + bool HasOneRef() const { return ref_count_ == 1; } protected: @@ -38,6 +40,8 @@ class RefCountedBase { class RefCountedThreadSafeBase { public: + static bool ImplementsThreadSafeReferenceCounting() { return true; } + bool HasOneRef() const; protected: |