fixed problem with non-ending segments and added support for Yield

Author: dhilpipre

README.md

@@ -21,12 +21,13 @@ Provides instrumentation for Kotlin Coroutines.  In particular it will trace the
 
 ## Supported Versions
 
+Kotlin-Coroutines-Suspends - provides tracing of Kotlin Coroutine suspend functions across all versions.   
 Kotlin-Coroutines-1.0 - all 1.0.x versions. 
 Kotlin-Coroutines-1.1 - all 1.1.x versions.  
 Kotlin-Coroutines-1.2 - all 1.2.x and 1.3.x versions.   
 Kotlin-Coroutines-1.4 - all 1.4.x versions.   
 Kotlin-Coroutines-1.5 - all 1.5.x and 1.6.x versions.   
-Kotlin-Coroutines-1.7 - all 1.7.x versions.   
+Kotlin-Coroutines-1.7 - all 1.7.x and later versions.   
 
 ## Installation
 To use this instrumentation.   
@@ -45,12 +46,18 @@ You can also check any captured transactions for Metrics that start with 'Custom
 
 After deployment of the instrumentation jars, you should be able to see the invocation of a coroutine from start to finish across any threads that it executes on.    
 
+### Couroutine Name
+For methods related to a coroutine (e.g. start, launch, runBlocking, etc.) it will use the CoroutineName if it is defined in the CoroutineContext or the simple name of the Coroutine class.    
+   
+### Continuation String
+Many of the metrics created by this instrumentation will use the continuation string which is the result of calling the toString method on a Continuation object.   Typically this is either Continuation at ${getStackTraceElement() or the Java class name.  In the case of subclasses of AbstractCoroutine it will be the coroutine name.   
+
 The following things are captured as part of the instrumentation   
 | Item | Metric Name format | Example |
 | ---- | ---- | ---- |
 | Suspend Functions | Custom/SuspendFunction/*ContinuationString* | Custom/SuspendFunction/Continuation at com.nrlabs.WithContextKt.main$doTaskOne(WithContext.kt:12) |
-| Dispatched Tasks | Custom/DispatchedTask//*ContinuationString* | Custom/DispatchedTask/DispatchedContinuation[Dispatchers.Default, Continuation at kotlin.coroutines.intrinsics.IntrinsicsKt__IntrinsicsJvmKt$createCoroutineUnintercepted... |
-| Continuation but not Suspend | Custom/ContinuationWrapper/*ContinuationString* | |
+| Dispatched Tasks | Custom/DispatchedTask//*ContinuationString* | Custom/DispatchedTask/DispatchedContinuation[java.util.concurrent.Executors$FinalizableDelegatedExecutorService |
+| Continuation but not Suspend | Custom/ContinuationWrapper/*ContinuationString* | Custom/ContinuationWrapper/resumeWith/createCoroutineFromSuspendFunction |
 
 ## Usage