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| author | maniscalco@chromium.org <maniscalco@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2014-05-27 22:37:50 +0000 |
|---|---|---|
| committer | maniscalco@chromium.org <maniscalco@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2014-05-27 22:37:50 +0000 |
| commit | ab8748ec61f0a2690e91f3f86f3d5e2ec43f1eb3 (patch) | |
| tree | 54555d4bccd0805641d60b001ea97f500ddfdc46 /base/message_loop/message_loop.h | |
| parent | 63fd1399de0659ae2bc91dc92d95cf792060e5fa (diff) | |
| download | chromium_src-ab8748ec61f0a2690e91f3f86f3d5e2ec43f1eb3.zip chromium_src-ab8748ec61f0a2690e91f3f86f3d5e2ec43f1eb3.tar.gz chromium_src-ab8748ec61f0a2690e91f3f86f3d5e2ec43f1eb3.tar.bz2 | |
Add example to MessageLoop::ReleaseSoon comment.
BUG=
Review URL: https://codereview.chromium.org/302633009
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273059 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/message_loop/message_loop.h')
| -rw-r--r-- | base/message_loop/message_loop.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/base/message_loop/message_loop.h b/base/message_loop/message_loop.h index 4bb7d55..25891c5 100644 --- a/base/message_loop/message_loop.h +++ b/base/message_loop/message_loop.h @@ -207,6 +207,17 @@ class BASE_EXPORT MessageLoop : public MessagePump::Delegate { // live until the next run of the MessageLoop, or if the object needs to be // released on a particular thread. // + // A common pattern is to manually increment the object's reference count + // (AddRef), issue a ReleaseSoon, then clear the pointer. The reference count + // is incremented manually to ensure clearing the pointer does not trigger a + // delete and to account for the upcoming decrement (ReleaseSoon). For + // example: + // + // scoped_refptr<Foo> foo = ... + // foo.AddRef(); + // message_loop->ReleaseSoon(foo.get()); + // foo = NULL; + // // NOTE: This method may be called on any thread. The object will be // released (and thus possibly deleted) on the thread that executes // MessageLoop::Run(). If this is not the same as the thread that calls |