til_args: introduce --print-module-contexts

Some rudimentary instrumentation for monitoring the active module
contexts alongside the pipes

You probably want to redirect stderr to a file when using
--print-pipes and/or --print-module-contexts...

e.g.
```
rototiller --defaults --go --print-pipes --print-module-contexts 2>/dev/null
```

or, if you still want to monitor FPS or log_channels=on in rtv,
2>/file/to/tail then tail -F /file/to/tail in another terminal.

1 files changed, 8 insertions, 2 deletions

diff --git a/src/main.c b/src/main.c
index de26001..8306b64 100644
--- a/src/main.c
+++ b/src/main.c
@@ -338,9 +338,15 @@ static void * rototiller_thread(void *_rt)
 		til_module_render(rt->module_context, rt->stream, ticks, &fragment);
 		til_fb_fragment_submit(fragment);
 
-		if (rt->args.print_pipes) { /* render threads are idle at this point */
+		if (rt->args.print_module_contexts || rt->args.print_pipes) {
+			/* render threads are idle at this point */
 			printf("\x1b[2J\x1b[;H"); /* ANSI codes for clear screen and move cursor to top left */
-			til_stream_fprint_pipes(rt->stream, stdout);
+
+			if (rt->args.print_module_contexts)
+				til_stream_fprint_module_contexts(rt->stream, stdout);
+
+			if (rt->args.print_pipes)
+				til_stream_fprint_pipes(rt->stream, stdout);
 		}
 	}