TextWriter synchronized method

If I use TextWriter synchronized method like below codes if another thread
is trying to write at the same time, what will happen ? Will it the 2nd
thread request to write to the file be queued ? Will the 2nd thread then
stop processing other codes while waiting to write to this file ?

Thank you.

Dim swLogOrig As StreamWriter
Dim swLog As TextWriter

swLogOrig = New StreamWriter(m_sLogFileName, True)
swLog = TextWriter.Synchronized(swLogOrig)


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