concurrency.md

@@ -162,3 +162,19 @@ The implementation additionally allows the following:
   can be invoked from multiple OS threads
 - bound threads: `forkOS`, `isCurrentThreadBound`, `runInBoundThread`, `runInUnboundThread`
 - concurrent/reentrant foreign calls are supported
+
+# Status of Compilers
+
+
+
+standard concurrency:  hugs, jhc(planned) 
+
+
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+standard + preemptive: ghc, yhc
+
+
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+standard + preemptive + OS threads: "ghc -threaded"
+
+