From e7410b8ed8b3bc821fb93c7bf359953ee6387a5a Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Tue, 4 Feb 2020 22:24:54 -0500
Subject: [PATCH] Uses objective clock for updates.

---
 OSBindings/Mac/Clock Signal/Machine/CSMachine.mm | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/OSBindings/Mac/Clock Signal/Machine/CSMachine.mm b/OSBindings/Mac/Clock Signal/Machine/CSMachine.mm
index f1e3a31a7..82c407710 100644
--- a/OSBindings/Mac/Clock Signal/Machine/CSMachine.mm	
+++ b/OSBindings/Mac/Clock Signal/Machine/CSMachine.mm	
@@ -720,10 +720,16 @@ struct ActivityObserver: public Activity::Observer {
 #define TICKS	600
 
 - (void)start {
+	__block auto lastTime = std::chrono::high_resolution_clock::now().time_since_epoch().count();
+
 	_timer = [[CSHighPrecisionTimer alloc] initWithTask:^{
+		const auto timeNow = std::chrono::high_resolution_clock::now().time_since_epoch().count();
+		const auto duration = timeNow - lastTime;
+		lastTime = timeNow;
+
 		CGSize pixelSize;
 		@synchronized(self) {
-			self->_machine->crt_machine()->run_for(1.0 / double(TICKS));
+			self->_machine->crt_machine()->run_for((double)duration / 1e9);
 			pixelSize = self->_pixelSize;
 		}