Mutex und Semaphore

Semaphore.kt

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+import kotlinx.coroutines.sync.Semaphore
+import kotlinx.coroutines.sync.withPermit
+
+val semaphore = Semaphore(5, 5)
+
+suspend fun main() {
+    semaphore.acquire() //reduces available permits, suspends when none available
+    semaphore.tryAcquire() //returns False if no permit available
+    semaphore.release() //releases permit, possible after acquire
+
+    semaphore.withPermit {
+
+    }
+}