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Bug 1190496 - Add a comment warning about MSCOM modes. r=cpearce

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This commit is contained in:
Bobby Holley 2015-08-03 11:49:42 -07:00
parent 75645bdcf4
commit 0da4d39c74
1 changed files with 9 additions and 2 deletions
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11
dom/media/SharedThreadPool.h
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@ -24,8 +24,15 @@ namespace mozilla {
// the same name get the same SharedThreadPool. Users must store a reference
// to the pool, and when the last reference to a SharedThreadPool is dropped
// the pool is shutdown and deleted. Users aren't required to manually
// shutdown the pool, and can release references on any thread. On Windows
// all threads in the pool have MSCOM initialized with COINIT_MULTITHREADED.
// shutdown the pool, and can release references on any thread.
//
// On Windows all threads in the pool have MSCOM initialized with
// COINIT_MULTITHREADED. Note that not all users of MSCOM use this mode see [1],
// and mixing MSCOM objects between the two is terrible for performance, and can
// cause some functions to fail. So be careful when using Win32 APIs on a
// SharedThreadPool, and avoid sharing objects if at all possible.
//
// [1] http://mxr.mozilla.org/mozilla-central/search?string=coinitialize
class SharedThreadPool : public nsIThreadPool
{
public: