input/{Async,Buffering,Thread}InputStream: set VMA name

src/input/AsyncInputStream.cxx

@@ -39,6 +39,7 @@ AsyncInputStream::AsyncInputStream(EventLoop &event_loop, const char *_url,
 	 buffer(&allocation.front(), allocation.size()),
 	 resume_at(_resume_at)
 {
+	allocation.SetName("InputStream");
 	allocation.ForkCow(false);
 }
 

src/input/BufferingInputStream.cxx

@@ -31,6 +31,8 @@ BufferingInputStream::BufferingInputStream(InputStreamPtr _input)
 {
 	input->SetHandler(this);
 
+	buffer.SetName("InputCache");
+
 	thread.Start();
 }
 

src/input/ThreadInputStream.cxx

@@ -35,6 +35,7 @@ ThreadInputStream::ThreadInputStream(const char *_plugin,
 	 allocation(_buffer_size),
 	 buffer(&allocation.front(), allocation.size())
 {
+	allocation.SetName("InputStream");
 	allocation.ForkCow(false);
 }