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902559ce32
using a lock and I'm not very much in favor of a global one. * Added "finished" callback to IORequest. * IOOperation::Finish() no longer invokes its parent request's ChunkFinished(). The finisher does this instead. ChunkFinished() can optionally remove the chunk from the parent. * Added IORequest::Wait() which waits for the completion of the request. * Introduced IORequestChunk::ResetStatus() to make setting the status to "pending" somewhat more explicit. * Implemented the missing IOScheduler::SetCallback() methods. * The NotifyAll() calls on the IOScheduler's condition variables were missing, so it just waited forever. * Added some more debug output. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26597 a95241bf-73f2-0310-859d-f6bbb57e9c96