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API > API/Developer > API/Developer/TraceAnalysis > API/Developer/TraceAnalysis/IOutDataStream
Description
Waits for the stream to be ready to write to. Some streams may need to establish the data stream before writing can begin. A stream may not block indefinitely.
| Name | WaitUntilReady |
| Type | function |
| Header File | /Engine/Source/Developer/TraceAnalysis/Public/Trace/OutDataStream.h |
| Include Path | #include "Trace/OutDataStream.h" |
virtual bool WaitUntilReady()
if the stream is ready to be write to