From 4ef0d74ea3b13886e38d09a4e4865be4e505db53 Mon Sep 17 00:00:00 2001
From: Julian Oes <julian@oes.ch>
Date: Tue, 13 Nov 2018 15:05:23 +0100
Subject: [PATCH] platforms: remove old lockstep functionality

These functions won't be used any longer with the new implementation.
---
 src/lib/cdev/posix/cdev_platform.cpp | 26 --------------------------
 src/modules/uORB/uORBDeviceNode.cpp  |  6 ------
 src/platforms/px4_posix.h            |  5 -----
 3 files changed, 37 deletions(-)

diff --git a/src/lib/cdev/posix/cdev_platform.cpp b/src/lib/cdev/posix/cdev_platform.cpp
index 5202dd2b50..c10bae4c1c 100644
--- a/src/lib/cdev/posix/cdev_platform.cpp
+++ b/src/lib/cdev/posix/cdev_platform.cpp
@@ -522,30 +522,4 @@ extern "C" {
 		pthread_mutex_unlock(&devmutex);
 	}
 
-	void px4_enable_sim_lockstep()
-	{
-		px4_sem_init(&lockstep_sem, 0, 0);
-
-		// lockstep_sem use case is a signal
-		px4_sem_setprotocol(&lockstep_sem, SEM_PRIO_NONE);
-
-		sim_lockstep = true;
-		sim_delay = false;
-	}
-
-	void px4_sim_start_delay()
-	{
-		sim_delay = true;
-	}
-
-	void px4_sim_stop_delay()
-	{
-		sim_delay = false;
-	}
-
-	bool px4_sim_delay_enabled()
-	{
-		return sim_delay;
-	}
-
 } // extern "C"
diff --git a/src/modules/uORB/uORBDeviceNode.cpp b/src/modules/uORB/uORBDeviceNode.cpp
index e50b9ccff3..2d78787663 100644
--- a/src/modules/uORB/uORBDeviceNode.cpp
+++ b/src/modules/uORB/uORBDeviceNode.cpp
@@ -590,12 +590,6 @@ out:
 bool
 uORB::DeviceNode::appears_updated(SubscriberData *sd)
 {
-
-	/* block if in simulation mode */
-	while (px4_sim_delay_enabled()) {
-		px4_usleep(100);
-	}
-
 	/* assume it doesn't look updated */
 	bool ret = false;
 
diff --git a/src/platforms/px4_posix.h b/src/platforms/px4_posix.h
index 3222e1b4ac..7c01e23799 100644
--- a/src/platforms/px4_posix.h
+++ b/src/platforms/px4_posix.h
@@ -108,11 +108,6 @@ __EXPORT int		px4_fsync(int fd);
 __EXPORT int		px4_access(const char *pathname, int mode);
 __EXPORT px4_task_t	px4_getpid(void);
 
-__EXPORT void		px4_enable_sim_lockstep(void);
-__EXPORT void		px4_sim_start_delay(void);
-__EXPORT void		px4_sim_stop_delay(void);
-__EXPORT bool		px4_sim_delay_enabled(void);
-
 __END_DECLS
 #else
 #error "No TARGET OS Provided"