libcamera: thread: Support timeout in wait() function

Add a parameter to the Thread::wait() function to wait with a timeout.
The delay value utils::duration::max() waits forever.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

src/libcamera/include/thread.h

@@ -14,6 +14,8 @@
 
 #include <libcamera/signal.h>
 
+#include "utils.h"
+
 namespace libcamera {
 
 class EventDispatcher;
@@ -33,7 +35,7 @@ public:
 
 	void start();
 	void exit(int code = 0);
-	void wait();
+	bool wait(utils::duration duration = utils::duration::max());
 
 	bool isRunning();