coroutines: wip compiles but does not link

src/concurrency/OSThread.h

@@ -4,11 +4,13 @@
 #include <stdint.h>
 
 #include "Thread.h"
-#include "freertosinc.h"
+#include "ThreadController.h"
 
 namespace concurrency
 {
 
+extern ThreadController mainController, timerController;
+
 /**
  * @brief Base threading
  *
@@ -17,23 +19,32 @@ namespace concurrency
  * sleeping the correct amount of time in main
  * NotifiedWorkerThread set/clears enabled
  *
+ * notifyLater should start now - not relative to last start time
+ * clear notification before calling handler
+ *
  * stopping sleep instantly as soon as an event occurs.
  * use global functions delayTillWakeEvent(time), doWakeEvent(isInISR) - use freertos mutex or somesuch
  *
+ * have router thread block on its message queue in runOnce
+ *
  * remove lock/lockguard
  */
-class OSThread
+class OSThread : public Thread
 {
-  public:
-    virtual ~OSThread() {}
+    ThreadController *controller;
 
-    // uint32_t getStackHighwaterMark() { return uxTaskGetStackHighWaterMark(taskHandle); }
+  public:
+    OSThread(const char *name, uint32_t period = 0, ThreadController *controller = &mainController);
+
+    virtual ~OSThread();
 
   protected:
     /**
      * The method that will be called each time our thread gets a chance to run
+     *
+     * Returns desired period for next invocation (or 0 for no change)
      */
-    virtual void runOnce() = 0;
+    virtual uint32_t runOnce() = 0;
 };
 
 } // namespace concurrency