StandardOutput and StandardError thread-safety

Hello,

My question is this:

You have an application(parent) which creates a child process and redirects
its StandardOutput and StandardError
To avoid deadlock 2 threads are used to read from the child process, each
thread reading a stream.
Is it thread safe to use the Process object and read the 2 streams ? if yes
can you please say why ?

class Reader
{
Process m_proc;

//thread 1
{
string str = m_proc.StandardOutput.ReadLine();
}

//thread 2
{
string str = m_proc.StandardError.ReadLine();
}

}

thank you