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Concurrent Systems/notes/4b -.md

@@ -55,4 +55,18 @@ C.signal() :=
 		PRIO.down()
 		NPR--
 ```
-p.s. The wait **always** suspends, even if there is only a process.
+p.s. The wait **always** suspends, even if there is only a process.
+
+#### Readers/Writers problem, strong priority to Readers
+```
+monitor RW_READERS :=
+	AR, WR, AW, WW init at 0
+	condition CR, CW
+
+operation begin_read() :=
+	WR++
+	if AW != 0 then
+		CR.wait()
+		CR.signal()
+
+```