clang-tidy modernize-use-nullptr

src/drivers/device/ringbuffer.cpp

@@ -86,7 +86,7 @@ void
 RingBuffer::flush()
 {
 	while (!empty()) {
-		get(NULL);
+		get(nullptr);
 	}
 }
 
@@ -179,7 +179,7 @@ RingBuffer::force(const void *val, size_t val_size)
 			break;
 		}
 
-		get(NULL);
+		get(nullptr);
 		overwrote = true;
 	}
 
@@ -281,7 +281,7 @@ RingBuffer::get(void *val, size_t val_size)
 			next = _next(candidate);
 
 			/* go ahead and read from this index */
-			if (val != NULL) {
+			if (val != nullptr) {
 				memcpy(val, &_buf[candidate * _item_size], val_size);
 			}
 

src/drivers/device/vdev.cpp

@@ -139,7 +139,7 @@ VDev::register_driver(const char *name, void *data)
 	PX4_DEBUG("VDev::register_driver %s", name);
 	int ret = -ENOSPC;
 
-	if (name == NULL || data == NULL) {
+	if (name == nullptr || data == nullptr) {
 		return -EINVAL;
 	}
 
@@ -156,7 +156,7 @@ VDev::register_driver(const char *name, void *data)
 	}
 
 	for (int i = 0; i < PX4_MAX_DEV; ++i) {
-		if (devmap[i] == NULL) {
+		if (devmap[i] == nullptr) {
 			devmap[i] = new px4_dev_t(name, (void *)data);
 			PX4_DEBUG("Registered DEV %s", name);
 			ret = PX4_OK;
@@ -179,7 +179,7 @@ VDev::unregister_driver(const char *name)
 	PX4_DEBUG("VDev::unregister_driver %s", name);
 	int ret = -EINVAL;
 
-	if (name == NULL) {
+	if (name == nullptr) {
 		return -EINVAL;
 	}
 
@@ -188,7 +188,7 @@ VDev::unregister_driver(const char *name)
 	for (int i = 0; i < PX4_MAX_DEV; ++i) {
 		if (devmap[i] && (strcmp(name, devmap[i]->name) == 0)) {
 			delete devmap[i];
-			devmap[i] = NULL;
+			devmap[i] = nullptr;
 			PX4_DEBUG("Unregistered DEV %s", name);
 			ret = PX4_OK;
 			break;
@@ -213,7 +213,7 @@ VDev::unregister_class_devname(const char *class_devname, unsigned class_instanc
 		if (devmap[i] && strcmp(devmap[i]->name, name) == 0) {
 			delete devmap[i];
 			PX4_DEBUG("Unregistered class DEV %s", name);
-			devmap[i] = NULL;
+			devmap[i] = nullptr;
 			pthread_mutex_unlock(&devmutex);
 			return PX4_OK;
 		}
@@ -551,7 +551,7 @@ VDev *VDev::getDev(const char *path)
 
 	pthread_mutex_unlock(&devmutex);
 
-	return NULL;
+	return nullptr;
 }
 
 void VDev::showDevices()
@@ -628,7 +628,7 @@ const char *VDev::topicList(unsigned int *next)
 		}
 	}
 
-	return NULL;
+	return nullptr;
 }
 
 const char *VDev::devList(unsigned int *next)
@@ -639,7 +639,7 @@ const char *VDev::devList(unsigned int *next)
 		}
 	}
 
-	return NULL;
+	return nullptr;
 }
 
 } // namespace device

src/drivers/device/vdev_posix.cpp

@@ -67,7 +67,7 @@ extern "C" {
 	inline bool valid_fd(int fd)
 	{
 		pthread_mutex_lock(&filemutex);
-		bool ret = (fd < PX4_MAX_FD && fd >= 0 && filemap[fd] != NULL);
+		bool ret = (fd < PX4_MAX_FD && fd >= 0 && filemap[fd] != nullptr);
 		pthread_mutex_unlock(&filemutex);
 		return ret;
 	}
@@ -75,7 +75,7 @@ extern "C" {
 	inline VDev *get_vdev(int fd)
 	{
 		pthread_mutex_lock(&filemutex);
-		bool valid = (fd < PX4_MAX_FD && fd >= 0 && filemap[fd] != NULL);
+		bool valid = (fd < PX4_MAX_FD && fd >= 0 && filemap[fd] != nullptr);
 		VDev *dev;
 
 		if (valid) {
@@ -115,7 +115,7 @@ extern "C" {
 			pthread_mutex_lock(&filemutex);
 
 			for (i = 0; i < PX4_MAX_FD; ++i) {
-				if (filemap[i] == 0) {
+				if (filemap[i] == nullptr) {
 					filemap[i] = new device::file_t(flags, dev, i);
 					break;
 				}
@@ -290,7 +290,7 @@ extern "C" {
 		for (i = 0; i < nfds; ++i) {
 			fds[i].sem     = &sem;
 			fds[i].revents = 0;
-			fds[i].priv    = NULL;
+			fds[i].priv    = nullptr;
 
 			VDev *dev = get_vdev(fds[i].fd);
 

src/drivers/gps/gps.cpp

@@ -320,7 +320,7 @@ int GPS::init()
 {
 
 	char gps_num[2] = {(char)('0' + _gps_num), 0};
-	char *const args[2] = { gps_num, NULL };
+	char *const args[2] = { gps_num, nullptr };
 
 	/* start the GPS driver worker task */
 	_task = px4_task_spawn_cmd("gps", SCHED_DEFAULT,

src/drivers/pwm_out_sim/pwm_out_sim.cpp

@@ -191,7 +191,7 @@ PWMSim::PWMSim() :
 	_poll_fds{},
 	_poll_fds_num(0),
 	_armed_sub(-1),
-	_outputs_pub(0),
+	_outputs_pub(nullptr),
 	_num_outputs(0),
 	_primary_pwm_device(false),
 	_groups_required(0),
@@ -487,7 +487,7 @@ PWMSim::task_main()
 			}
 
 			/* do mixing */
-			num_outputs = _mixers->mix(&outputs.output[0], num_outputs, NULL);
+			num_outputs = _mixers->mix(&outputs.output[0], num_outputs, nullptr);
 			outputs.noutputs = num_outputs;
 			outputs.timestamp = hrt_absolute_time();
 
@@ -957,13 +957,13 @@ fake(int argc, char *argv[])
 
 	actuator_controls_s ac;
 
-	ac.control[0] = strtol(argv[1], 0, 0) / 100.0f;
+	ac.control[0] = strtol(argv[1], nullptr, 0) / 100.0f;
 
-	ac.control[1] = strtol(argv[2], 0, 0) / 100.0f;
+	ac.control[1] = strtol(argv[2], nullptr, 0) / 100.0f;
 
-	ac.control[2] = strtol(argv[3], 0, 0) / 100.0f;
+	ac.control[2] = strtol(argv[3], nullptr, 0) / 100.0f;
 
-	ac.control[3] = strtol(argv[4], 0, 0) / 100.0f;
+	ac.control[3] = strtol(argv[4], nullptr, 0) / 100.0f;
 
 	orb_advert_t handle = orb_advertise(ORB_ID_VEHICLE_ATTITUDE_CONTROLS, &ac);
 

src/drivers/vmount/vmount.cpp

@@ -161,7 +161,7 @@ static int vmount_thread_main(int argc, char *argv[])
 
 			for (int i = 0 ; i < 3; ++i) {
 				if (!strcmp(argv[1], axis_names[i])) {
-					long angle_deg = strtol(argv[2], NULL, 0);
+					long angle_deg = strtol(argv[2], nullptr, 0);
 					angles[i] = (float)angle_deg;
 					found_axis = true;
 				}