drop deprecated TBB components (#6590)

Quite some time ago, many of the TBB components were deprecated in favor
of their near-equivalents in the STL or, in the case of task_scheduler_init,
were broken up and reconstituted under a less ad-hoc logic. Every time a header
file marked deprecated gets included, a rather loud warning is emitted, which
leads to a complete TBB's domination over the stderr stream during build time,
making it harder to notice _legitimate_ warnings.

Instead of merely muting the output with TBB_SUPPRESS_DEPRECATED_MESSAGES,
perform a genuine migration away from the deprecated components with the added
benefit of achieving a source compatibility with oneTBB, the successor to TBB
which has dropped the deprecated API for good.

What got replaced for what?

| Deprecated				| Replacement					|
| ------------------------------------- | --------------------------------------------- |
| `tbb::atomic`				| `std::atomic`					|
| `tbb::mutex`				| `std::mutex`					|
| `tbb::mutex::scoped_lock`		| `std::scoped_lock<std::mutex>`		|
| `tbb::mutex::scoped_lock` (empty)	| `std::unique_lock<std::mutex>` (deferred)	|
| `tbb::task_scheduler_init`		| `tbb::global_control`				|
| `tbb::this_thread`			| `std::this_thread`				|

Signed-off-by: Roman Beranek <roman.beranek@prusa3d.com>

src/libslic3r/Execution/ExecutionTBB.hpp

@@ -1,8 +1,9 @@
 #ifndef EXECUTIONTBB_HPP
 #define EXECUTIONTBB_HPP
 
+#include <mutex>
+
 #include <tbb/spin_mutex.h>
-#include <tbb/mutex.h>
 #include <tbb/parallel_for.h>
 #include <tbb/parallel_reduce.h>
 #include <tbb/task_arena.h>
@@ -34,7 +35,7 @@ private:
 
 public:
     using SpinningMutex = tbb::spin_mutex;
-    using BlockingMutex = tbb::mutex;
+    using BlockingMutex = std::mutex;
 
     template<class It, class Fn>
     static void for_each(const ExecutionTBB &,

src/libslic3r/Print.cpp

@@ -36,7 +36,7 @@ PrintRegion::PrintRegion(PrintRegionConfig &&config) : PrintRegion(std::move(con
 
 void Print::clear() 
 {
-	tbb::mutex::scoped_lock lock(this->state_mutex());
+	std::scoped_lock<std::mutex> lock(this->state_mutex());
     // The following call should stop background processing if it is running.
     this->invalidate_all_steps();
 	for (PrintObject *object : m_objects)
@@ -252,7 +252,7 @@ bool Print::is_step_done(PrintObjectStep step) const
 {
     if (m_objects.empty())
         return false;
-    tbb::mutex::scoped_lock lock(this->state_mutex());
+    std::scoped_lock<std::mutex> lock(this->state_mutex());
     for (const PrintObject *object : m_objects)
         if (! object->is_step_done_unguarded(step))
             return false;

src/libslic3r/PrintApply.cpp

@@ -915,7 +915,7 @@ Print::ApplyStatus Print::apply(const Model &model, DynamicPrintConfig new_full_
         update_apply_status(false);
 
     // Grab the lock for the Print / PrintObject milestones.
-	tbb::mutex::scoped_lock lock(this->state_mutex());
+	std::scoped_lock<std::mutex> lock(this->state_mutex());
 
     // The following call may stop the background processing.
     if (! print_diff.empty())

src/libslic3r/PrintBase.cpp

@@ -104,7 +104,7 @@ void PrintBase::status_update_warnings(int step, PrintStateBase::WarningLevel /*
         printf("%s warning: %s\n",  print_object ? "print_object" : "print", message.c_str());
 }
 
-tbb::mutex& PrintObjectBase::state_mutex(PrintBase *print)
+std::mutex& PrintObjectBase::state_mutex(PrintBase *print)
 { 
 	return print->state_mutex();
 }

src/libslic3r/PrintBase.hpp

@@ -6,12 +6,8 @@
 #include <vector>
 #include <string>
 #include <functional>
-
+#include <atomic>
-// tbb/mutex.h includes Windows, which in turn defines min/max macros. Convince Windows.h to not define these min/max macros.
+#include <mutex>
-#ifndef NOMINMAX
-    #define NOMINMAX
-#endif
-#include "tbb/mutex.h"
 
 #include "ObjectID.hpp"
 #include "Model.hpp"
@@ -84,23 +80,23 @@ class PrintState : public PrintStateBase
 public:
     PrintState() {}
 
-    StateWithTimeStamp state_with_timestamp(StepType step, tbb::mutex &mtx) const {
+    StateWithTimeStamp state_with_timestamp(StepType step, std::mutex &mtx) const {
-        tbb::mutex::scoped_lock lock(mtx);
+        std::scoped_lock<std::mutex> lock(mtx);
         StateWithTimeStamp state = m_state[step];
         return state;
     }
 
-    StateWithWarnings state_with_warnings(StepType step, tbb::mutex &mtx) const {
+    StateWithWarnings state_with_warnings(StepType step, std::mutex &mtx) const {
-        tbb::mutex::scoped_lock lock(mtx);
+        std::scoped_lock<std::mutex> lock(mtx);
         StateWithWarnings state = m_state[step];
         return state;
     }
 
-    bool is_started(StepType step, tbb::mutex &mtx) const {
+    bool is_started(StepType step, std::mutex &mtx) const {
         return this->state_with_timestamp(step, mtx).state == STARTED;
     }
 
-    bool is_done(StepType step, tbb::mutex &mtx) const {
+    bool is_done(StepType step, std::mutex &mtx) const {
         return this->state_with_timestamp(step, mtx).state == DONE;
     }
 
@@ -121,8 +117,8 @@ public:
     // This is necessary to block until the Print::apply() updates its state, which may
     // influence the processing step being entered.
     template<typename ThrowIfCanceled>
-    bool set_started(StepType step, tbb::mutex &mtx, ThrowIfCanceled throw_if_canceled) {
+    bool set_started(StepType step, std::mutex &mtx, ThrowIfCanceled throw_if_canceled) {
-        tbb::mutex::scoped_lock lock(mtx);
+        std::scoped_lock<std::mutex> lock(mtx);
         // If canceled, throw before changing the step state.
         throw_if_canceled();
 #ifndef NDEBUG
@@ -154,8 +150,8 @@ public:
     // 		Timestamp when this stepentered the DONE state.
     // 		bool indicates whether the UI has to update the slicing warnings of this step or not.
 	template<typename ThrowIfCanceled>
-	std::pair<TimeStamp, bool> set_done(StepType step, tbb::mutex &mtx, ThrowIfCanceled throw_if_canceled) {
+	std::pair<TimeStamp, bool> set_done(StepType step, std::mutex &mtx, ThrowIfCanceled throw_if_canceled) {
-        tbb::mutex::scoped_lock lock(mtx);
+        std::scoped_lock<std::mutex> lock(mtx);
         // If canceled, throw before changing the step state.
         throw_if_canceled();
         assert(m_state[step].state == STARTED);
@@ -266,9 +262,9 @@ public:
     // Return value:
     // 		Current milestone (StepType).
     // 		bool indicates whether the UI has to be updated or not.
-    std::pair<StepType, bool> active_step_add_warning(PrintStateBase::WarningLevel warning_level, const std::string &message, int message_id, tbb::mutex &mtx)
+    std::pair<StepType, bool> active_step_add_warning(PrintStateBase::WarningLevel warning_level, const std::string &message, int message_id, std::mutex &mtx)
     {
-        tbb::mutex::scoped_lock lock(mtx);
+        std::scoped_lock<std::mutex> lock(mtx);
         assert(m_step_active != -1);
         StateWithWarnings &state = m_state[m_step_active];
         assert(state.state == STARTED);
@@ -314,7 +310,7 @@ protected:
     PrintObjectBase(ModelObject *model_object) : m_model_object(model_object) {}
     virtual ~PrintObjectBase() {}
     // Declared here to allow access from PrintBase through friendship.
-	static tbb::mutex&                  state_mutex(PrintBase *print);
+	static std::mutex&                  state_mutex(PrintBase *print);
 	static std::function<void()>        cancel_callback(PrintBase *print);
 	// Notify UI about a new warning of a milestone "step" on this PrintObjectBase.
 	// The UI will be notified by calling a status callback registered on print.
@@ -475,7 +471,7 @@ protected:
 	friend class PrintObjectBase;
     friend class BackgroundSlicingProcess;
 
-    tbb::mutex&            state_mutex() const { return m_state_mutex; }
+    std::mutex&            state_mutex() const { return m_state_mutex; }
     std::function<void()>  cancel_callback() { return m_cancel_callback; }
 	void				   call_cancel_callback() { m_cancel_callback(); }
 	// Notify UI about a new warning of a milestone "step" on this PrintBase.
@@ -502,7 +498,7 @@ protected:
     status_callback_type                    m_status_callback;
 
 private:
-    tbb::atomic<CancelStatus>               m_cancel_status;
+    std::atomic<CancelStatus>               m_cancel_status;
 
     // Callback to be evoked to stop the background processing before a state is updated.
     cancel_callback_type                    m_cancel_callback = [](){};
@@ -510,7 +506,7 @@ private:
     // Mutex used for synchronization of the worker thread with the UI thread:
     // The mutex will be used to guard the worker thread against entering a stage
     // while the data influencing the stage is modified.
-    mutable tbb::mutex                      m_state_mutex;
+    mutable std::mutex                      m_state_mutex;
 
     friend PrintTryCancel;
 };

src/libslic3r/PrintObject.cpp

@@ -22,7 +22,6 @@
 #include <boost/log/trivial.hpp>
 
 #include <tbb/parallel_for.h>
-#include <tbb/atomic.h>
 
 #include <Shiny/Shiny.h>
 

src/libslic3r/SLA/SupportTree.cpp

@@ -17,9 +17,6 @@
 #include <libnest2d/optimizers/nlopt/genetic.hpp>
 #include <libnest2d/optimizers/nlopt/subplex.hpp>
 #include <boost/log/trivial.hpp>
-#include <tbb/parallel_for.h>
-#include <tbb/mutex.h>
-#include <tbb/spin_mutex.h>
 #include <libslic3r/I18N.hpp>
 
 //! macro used to mark string used at localization,

src/libslic3r/SLAPrint.cpp

@@ -19,8 +19,6 @@
 #include <libnest2d/tools/benchmark.h>
 #endif
 
-//#include <tbb/spin_mutex.h>//#include "tbb/mutex.h"
-
 #include "I18N.hpp"
 
 //! macro used to mark string used at localization,
@@ -118,7 +116,7 @@ bool validate_pad(const indexed_triangle_set &pad, const sla::PadConfig &pcfg)
 
 void SLAPrint::clear()
 {
-    tbb::mutex::scoped_lock lock(this->state_mutex());
+    std::scoped_lock<std::mutex> lock(this->state_mutex());
     // The following call should stop background processing if it is running.
     this->invalidate_all_steps();
     for (SLAPrintObject *object : m_objects)
@@ -212,7 +210,7 @@ SLAPrint::ApplyStatus SLAPrint::apply(const Model &model, DynamicPrintConfig con
         update_apply_status(false);
 
     // Grab the lock for the Print / PrintObject milestones.
-    tbb::mutex::scoped_lock lock(this->state_mutex());
+    std::scoped_lock<std::mutex> lock(this->state_mutex());
 
     // The following call may stop the background processing.
     bool invalidate_all_model_objects = false;
@@ -514,7 +512,7 @@ SLAPrint::ApplyStatus SLAPrint::apply(const Model &model, DynamicPrintConfig con
 void SLAPrint::set_task(const TaskParams &params)
 {
     // Grab the lock for the Print / PrintObject milestones.
-    tbb::mutex::scoped_lock lock(this->state_mutex());
+    std::scoped_lock<std::mutex> lock(this->state_mutex());
 
     int n_object_steps = int(params.to_object_step) + 1;
     if (n_object_steps == 0)
@@ -884,7 +882,7 @@ bool SLAPrint::is_step_done(SLAPrintObjectStep step) const
 {
     if (m_objects.empty())
         return false;
-    tbb::mutex::scoped_lock lock(this->state_mutex());
+    std::scoped_lock<std::mutex> lock(this->state_mutex());
     for (const SLAPrintObject *object : m_objects)
         if (! object->is_step_done_unguarded(step))
             return false;

src/libslic3r/SupportMaterial.cpp

@@ -14,7 +14,6 @@
 #include <boost/container/static_vector.hpp>
 
 #include <tbb/parallel_for.h>
-#include <tbb/atomic.h>
 #include <tbb/spin_mutex.h>
 #include <tbb/task_group.h>
 

src/libslic3r/Thread.cpp

@@ -9,10 +9,10 @@
 #include <atomic>
 #include <condition_variable>
 #include <mutex>
+#include <thread>
+#include <tbb/global_control.h>
 #include <tbb/parallel_for.h>
-#include <tbb/tbb_thread.h>
 #include <tbb/task_arena.h>
-#include <tbb/task_scheduler_init.h>
 
 #include "Thread.hpp"
 
@@ -207,12 +207,12 @@ void name_tbb_thread_pool_threads()
 #endif
 
 	if (nthreads != nthreads_hw)
-		new tbb::task_scheduler_init(int(nthreads));
+		tbb::global_control(tbb::global_control::max_allowed_parallelism, nthreads);
 
 	std::atomic<size_t>		nthreads_running(0);
 	std::condition_variable cv;
 	std::mutex				cv_m;
-	auto					master_thread_id = tbb::this_tbb_thread::get_id();
+	auto					master_thread_id = std::this_thread::get_id();
     tbb::parallel_for(
         tbb::blocked_range<size_t>(0, nthreads, 1),
         [&nthreads_running, nthreads, &master_thread_id, &cv, &cv_m](const tbb::blocked_range<size_t> &range) {
@@ -226,7 +226,7 @@ void name_tbb_thread_pool_threads()
 				std::unique_lock<std::mutex> lk(cv_m);
 			    cv.wait(lk, [&nthreads_running, nthreads]{return nthreads_running == nthreads;});
         	}
-        	auto thread_id = tbb::this_tbb_thread::get_id();
+        	auto thread_id = std::this_thread::get_id();
 			if (thread_id == master_thread_id) {
 				// The calling thread runs the 0'th task.
 				assert(range.begin() == 0);

src/libslic3r/pchheader.hpp

@@ -100,12 +100,9 @@
 #include <boost/thread.hpp>
 #include <boost/version.hpp>
 
-#include <tbb/atomic.h>
 #include <tbb/parallel_for.h>
 #include <tbb/spin_mutex.h>
-#include <tbb/mutex.h>
 #include <tbb/task_group.h>
-#include <tbb/task_scheduler_init.h>
 
 #include <Eigen/Dense>
 #include <Eigen/Geometry>

src/libslic3r/utils.cpp

@@ -43,7 +43,7 @@
 #include <boost/nowide/convert.hpp>
 #include <boost/nowide/cstdio.hpp>
 
-#include <tbb/task_scheduler_init.h>
+#include <tbb/global_control.h>
 
 #if defined(__linux__) || defined(__GNUC__ )
 #include <strings.h>
@@ -118,9 +118,7 @@ void trace(unsigned int level, const char *message)
 void disable_multi_threading()
 {
     // Disable parallelization so the Shiny profiler works
-    static tbb::task_scheduler_init *tbb_init = nullptr;
+    tbb::global_control(tbb::global_control::max_allowed_parallelism, 1);
-    if (tbb_init == nullptr)
-        tbb_init = new tbb::task_scheduler_init(1);
 }
 
 static std::string g_var_dir;

src/slic3r/GUI/BackgroundSlicingProcess.cpp

@@ -645,7 +645,7 @@ void BackgroundSlicingProcess::schedule_export(const std::string &path, bool exp
 		return;
 
 	// Guard against entering the export step before changing the export path.
-	tbb::mutex::scoped_lock lock(m_print->state_mutex());
+	std::scoped_lock<std::mutex> lock(m_print->state_mutex());
 	this->invalidate_step(bspsGCodeFinalize);
 	m_export_path = path;
 	m_export_path_on_removable_media = export_path_on_removable_media;
@@ -658,7 +658,7 @@ void BackgroundSlicingProcess::schedule_upload(Slic3r::PrintHostJob upload_job)
 		return;
 
 	// Guard against entering the export step before changing the export path.
-	tbb::mutex::scoped_lock lock(m_print->state_mutex());
+	std::scoped_lock<std::mutex> lock(m_print->state_mutex());
 	this->invalidate_step(bspsGCodeFinalize);
 	m_export_path.clear();
 	m_upload_job = std::move(upload_job);
@@ -671,7 +671,7 @@ void BackgroundSlicingProcess::reset_export()
 		m_export_path.clear();
 		m_export_path_on_removable_media = false;
 		// invalidate_step expects the mutex to be locked.
-		tbb::mutex::scoped_lock lock(m_print->state_mutex());
+		std::scoped_lock<std::mutex> lock(m_print->state_mutex());
 		this->invalidate_step(bspsGCodeFinalize);
 	}
 }

src/slic3r/GUI/InstanceCheck.hpp

@@ -13,7 +13,7 @@
 
 #if __linux__
 #include <boost/thread.hpp>
-#include <tbb/mutex.h>
+#include <mutex>
 #include <condition_variable>
 #endif // __linux__
 

src/slic3r/GUI/Mouse3DController.cpp

@@ -66,7 +66,7 @@ void update_maximum(std::atomic<T>& maximum_value, T const& value) noexcept
 
 void Mouse3DController::State::append_translation(const Vec3d& translation, size_t input_queue_max_size)
 {
-	tbb::mutex::scoped_lock lock(m_input_queue_mutex);
+    std::scoped_lock<std::mutex> lock(m_input_queue_mutex);
     while (m_input_queue.size() >= input_queue_max_size)
         m_input_queue.pop_front();
     m_input_queue.emplace_back(QueueItem::translation(translation));
@@ -77,7 +77,7 @@ void Mouse3DController::State::append_translation(const Vec3d& translation, size
 
 void Mouse3DController::State::append_rotation(const Vec3f& rotation, size_t input_queue_max_size)
 {
-	tbb::mutex::scoped_lock lock(m_input_queue_mutex);
+    std::scoped_lock<std::mutex> lock(m_input_queue_mutex);
     while (m_input_queue.size() >= input_queue_max_size)
         m_input_queue.pop_front();
     m_input_queue.emplace_back(QueueItem::rotation(rotation.cast<double>()));
@@ -92,7 +92,7 @@ void Mouse3DController::State::append_rotation(const Vec3f& rotation, size_t inp
 
 void Mouse3DController::State::append_button(unsigned int id, size_t /* input_queue_max_size */)
 {
-	tbb::mutex::scoped_lock lock(m_input_queue_mutex);
+    std::scoped_lock<std::mutex> lock(m_input_queue_mutex);
     m_input_queue.emplace_back(QueueItem::buttons(id));
 #if ENABLE_3DCONNEXION_DEVICES_DEBUG_OUTPUT
     update_maximum(input_queue_max_size_achieved, m_input_queue.size());
@@ -274,7 +274,7 @@ void Mouse3DController::device_attached(const std::string &device)
 			m_stop_condition.notify_all();
             m_device_str = format_device_string(vid, pid);
             if (auto it_params = m_params_by_device.find(m_device_str); it_params != m_params_by_device.end()) {
-                tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+                std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
                 m_params = m_params_ui = it_params->second;
             }
             else
@@ -290,7 +290,7 @@ void Mouse3DController::device_detached(const std::string& device)
     int pid = 0;
     if (sscanf(device.c_str(), "\\\\?\\HID#VID_%x&PID_%x&", &vid, &pid) == 2) {
         if (std::find(_3DCONNEXION_VENDORS.begin(), _3DCONNEXION_VENDORS.end(), vid) != _3DCONNEXION_VENDORS.end()) {
-            tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+            std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
             m_params_by_device[format_device_string(vid, pid)] = m_params_ui;
         }
     }
@@ -301,12 +301,12 @@ void Mouse3DController::device_detached(const std::string& device)
 // Filter out mouse scroll events produced by the 3DConnexion driver.
 bool Mouse3DController::State::process_mouse_wheel()
 {
-	tbb::mutex::scoped_lock lock(m_input_queue_mutex);
+    std::scoped_lock<std::mutex> lock(m_input_queue_mutex);
-	if (m_mouse_wheel_counter == 0)
+    if (m_mouse_wheel_counter == 0)
-    	// No 3DConnexion rotation has been captured since the last mouse scroll event.
+        // No 3DConnexion rotation has been captured since the last mouse scroll event.
         return false;
     if (std::find_if(m_input_queue.begin(), m_input_queue.end(), [](const QueueItem &item){ return item.is_rotation(); }) != m_input_queue.end()) {
-    	// There is a rotation stored in the queue. Suppress one mouse scroll event.
+        // There is a rotation stored in the queue. Suppress one mouse scroll event.
         -- m_mouse_wheel_counter;
         return true;
     }
@@ -323,7 +323,7 @@ bool Mouse3DController::State::apply(const Mouse3DController::Params &params, Ca
     std::deque<QueueItem> input_queue;
     {
     	// Atomically move m_input_queue to input_queue.
-    	tbb::mutex::scoped_lock lock(m_input_queue_mutex);
+    	std::scoped_lock<std::mutex> lock(m_input_queue_mutex);
     	input_queue = std::move(m_input_queue);
         m_input_queue.clear();
     }
@@ -411,7 +411,7 @@ bool Mouse3DController::apply(Camera& camera)
 
 #ifdef _WIN32
     {
-        tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+        std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
         if (m_params_ui_changed) {
             m_params = m_params_ui;
             m_params_ui_changed = false;
@@ -439,7 +439,7 @@ void Mouse3DController::render_settings_dialog(GLCanvas3D& canvas) const
     Params params_copy;
     bool   params_changed = false;
     {
-    	tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+    	std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
     	params_copy = m_params_ui;
     }
 
@@ -557,7 +557,7 @@ void Mouse3DController::render_settings_dialog(GLCanvas3D& canvas) const
 
     if (params_changed) {
         // Synchronize front end parameters to back end.
-    	tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+    	std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
         auto pthis = const_cast<Mouse3DController*>(this);
 #if ENABLE_3DCONNEXION_DEVICES_DEBUG_OUTPUT
         if (params_copy.input_queue_max_size != params_copy.input_queue_max_size)
@@ -578,7 +578,7 @@ void Mouse3DController::connected(std::string device_name)
 	m_device_str = device_name;
     // Copy the parameters for m_device_str into the current parameters.
     if (auto it_params = m_params_by_device.find(m_device_str); it_params != m_params_by_device.end()) {
-    	tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+    	std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
     	m_params = m_params_ui = it_params->second;
     }
     m_connected = true;
@@ -589,7 +589,7 @@ void Mouse3DController::disconnected()
     // Copy the current parameters for m_device_str into the parameter database.
     assert(m_connected == ! m_device_str.empty());
     if (m_connected) {
-        tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+        std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
         m_params_by_device[m_device_str] = m_params_ui;
 	    m_device_str.clear();
 	    m_connected = false;
@@ -613,7 +613,7 @@ bool Mouse3DController::handle_input(const DataPacketAxis& packet)
     {
     	// Synchronize parameters between the UI thread and the background thread.
     	//FIXME is this necessary on OSX? Are these notifications triggered from the main thread or from a worker thread?
-    	tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+    	std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
     	if (m_params_ui_changed) {
     		m_params = m_params_ui;
     		m_params_ui_changed = false;
@@ -721,7 +721,7 @@ void Mouse3DController::run()
 
     for (;;) {
         {
-        	tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+        	std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
         	if (m_stop)
         		break;
         	if (m_params_ui_changed) {
@@ -986,7 +986,7 @@ bool Mouse3DController::connect_device()
 #endif // ENABLE_3DCONNEXION_DEVICES_DEBUG_OUTPUT
         // Copy the parameters for m_device_str into the current parameters.
         if (auto it_params = m_params_by_device.find(m_device_str); it_params != m_params_by_device.end()) {
-	    	tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+	    	std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
 	    	m_params = m_params_ui = it_params->second;
 	    }
     }
@@ -1011,7 +1011,7 @@ void Mouse3DController::disconnect_device()
 	    BOOST_LOG_TRIVIAL(info) << "Disconnected device: " << m_device_str;
         // Copy the current parameters for m_device_str into the parameter database.
         {
-	        tbb::mutex::scoped_lock lock(m_params_ui_mutex);
+	        std::scoped_lock<std::mutex> lock(m_params_ui_mutex);
 	        m_params_by_device[m_device_str] = m_params_ui;
 	    }
 	    m_device_str.clear();

src/slic3r/GUI/Mouse3DController.hpp

@@ -10,12 +10,12 @@
 
 #include <queue>
 #include <atomic>
+#include <mutex>
 #include <thread>
 #include <vector>
 #include <chrono>
 #include <condition_variable>
 
-#include <tbb/mutex.h>
 
 namespace Slic3r {
 
@@ -85,7 +85,7 @@ class Mouse3DController
     	// m_input_queue is accessed by the background thread and by the UI thread. Access to m_input_queue
     	// is guarded with m_input_queue_mutex.
         std::deque<QueueItem> m_input_queue;
-        mutable tbb::mutex	  m_input_queue_mutex;
+        mutable std::mutex	  m_input_queue_mutex;
 
 #ifdef WIN32
         // When the 3Dconnexion driver is running the system gets, by default, mouse wheel events when rotations around the X axis are detected.
@@ -112,12 +112,12 @@ class Mouse3DController
 
 #if ENABLE_3DCONNEXION_DEVICES_DEBUG_OUTPUT
         Vec3d               get_first_vector_of_type(unsigned int type) const {
-            tbb::mutex::scoped_lock lock(m_input_queue_mutex);
+            std::scoped_lock<std::mutex> lock(m_input_queue_mutex);
             auto it = std::find_if(m_input_queue.begin(), m_input_queue.end(), [type](const QueueItem& item) { return item.type_or_buttons == type; });
             return (it == m_input_queue.end()) ? Vec3d::Zero() : it->vector;
         }
         size_t              input_queue_size_current() const { 
-        	tbb::mutex::scoped_lock lock(m_input_queue_mutex); 
+        	std::scoped_lock<std::mutex> lock(m_input_queue_mutex); 
         	return m_input_queue.size(); 
         }
         std::atomic<size_t> input_queue_max_size_achieved;
@@ -133,7 +133,7 @@ class Mouse3DController
     // UI thread will read / write this copy.
     Params 				m_params_ui;
     bool 	            m_params_ui_changed { false };
-    mutable tbb::mutex	m_params_ui_mutex;
+    mutable std::mutex	m_params_ui_mutex;
 
     // This is a database of parametes of all 3DConnexion devices ever connected.
     // This database is loaded from AppConfig on application start and it is stored to AppConfig on application exit.

src/slic3r/GUI/RemovableDriveManager.cpp

@@ -84,7 +84,7 @@ void RemovableDriveManager::eject_drive()
 	this->update();
 #endif // REMOVABLE_DRIVE_MANAGER_OS_CALLBACKS
 	BOOST_LOG_TRIVIAL(info) << "Ejecting started"; 
-	tbb::mutex::scoped_lock lock(m_drives_mutex);
+	std::scoped_lock<std::mutex> lock(m_drives_mutex);
 	auto it_drive_data = this->find_last_save_path_drive_data();
 	if (it_drive_data != m_current_drives.end()) {
 		// get handle to device
@@ -130,7 +130,7 @@ std::string RemovableDriveManager::get_removable_drive_path(const std::string &p
 	this->update();
 #endif // REMOVABLE_DRIVE_MANAGER_OS_CALLBACKS
 
-	tbb::mutex::scoped_lock lock(m_drives_mutex);
+	std::scoped_lock<std::mutex> lock(m_drives_mutex);
 	if (m_current_drives.empty())
 		return std::string();
 	std::size_t found = path.find_last_of("\\");
@@ -146,7 +146,7 @@ std::string RemovableDriveManager::get_removable_drive_path(const std::string &p
 
 std::string RemovableDriveManager::get_removable_drive_from_path(const std::string& path)
 {
-	tbb::mutex::scoped_lock lock(m_drives_mutex);
+	std::scoped_lock<std::mutex> lock(m_drives_mutex);
 	std::size_t found = path.find_last_of("\\");
 	std::string new_path = path.substr(0, found);
 	int letter = PathGetDriveNumberW(boost::nowide::widen(new_path).c_str());	
@@ -287,7 +287,7 @@ void RemovableDriveManager::eject_drive()
 
 	DriveData drive_data;
 	{
-		tbb::mutex::scoped_lock lock(m_drives_mutex);
+		std::scoped_lock<std::mutex> lock(m_drives_mutex);
 		auto it_drive_data = this->find_last_save_path_drive_data();
 		if (it_drive_data == m_current_drives.end())
 			return;
@@ -343,7 +343,7 @@ void RemovableDriveManager::eject_drive()
 		if (success) {
 			// Remove the drive_data from m_current drives, searching by value, not by pointer, as m_current_drives may get modified during
 			// asynchronous execution on m_eject_thread.
-			tbb::mutex::scoped_lock lock(m_drives_mutex);
+			std::scoped_lock<std::mutex> lock(m_drives_mutex);
 			auto it = std::find(m_current_drives.begin(), m_current_drives.end(), drive_data);
 			if (it != m_current_drives.end())
 				m_current_drives.erase(it);
@@ -363,7 +363,7 @@ std::string RemovableDriveManager::get_removable_drive_path(const std::string &p
 	std::size_t found = path.find_last_of("/");
 	std::string new_path = found == path.size() - 1 ? path.substr(0, found) : path;
 
-	tbb::mutex::scoped_lock lock(m_drives_mutex);
+	std::scoped_lock<std::mutex> lock(m_drives_mutex);
 	for (const DriveData &data : m_current_drives)
 		if (search_for_drives_internal::compare_filesystem_id(new_path, data.path))
 			return path;
@@ -379,7 +379,7 @@ std::string RemovableDriveManager::get_removable_drive_from_path(const std::stri
     new_path = new_path.substr(0, found);
     
 	// check if same filesystem
-	tbb::mutex::scoped_lock lock(m_drives_mutex);
+	std::scoped_lock<std::mutex> lock(m_drives_mutex);
 	for (const DriveData &drive_data : m_current_drives)
 		if (search_for_drives_internal::compare_filesystem_id(new_path, drive_data.path))
 			return drive_data.path;
@@ -454,7 +454,7 @@ RemovableDriveManager::RemovableDrivesStatus RemovableDriveManager::status()
 
 	RemovableDriveManager::RemovableDrivesStatus out;
 	{
-		tbb::mutex::scoped_lock lock(m_drives_mutex);
+		std::scoped_lock<std::mutex> lock(m_drives_mutex);
 		out.has_eject = 
 			// Cannot control eject on Chromium.
 			platform_flavor() != PlatformFlavor::LinuxOnChromium &&
@@ -470,17 +470,17 @@ RemovableDriveManager::RemovableDrivesStatus RemovableDriveManager::status()
 // Update is called from thread_proc() and from most of the public methods on demand.
 void RemovableDriveManager::update()
 {
-	tbb::mutex::scoped_lock inside_update_lock;
+	std::unique_lock<std::mutex> inside_update_lock(m_inside_update_mutex, std::defer_lock);
 #ifdef _WIN32
 	// All wake up calls up to now are now consumed when the drive enumeration starts.
 	m_wakeup = false;
 #endif // _WIN32
-	if (inside_update_lock.try_acquire(m_inside_update_mutex)) {
+	if (inside_update_lock.try_lock()) {
 		// Got the lock without waiting. That means, the update was not running.
 		// Run the update.
 		std::vector<DriveData> current_drives = this->search_for_removable_drives();
 		// Post update events.
-		tbb::mutex::scoped_lock lock(m_drives_mutex);
+		std::scoped_lock<std::mutex> lock(m_drives_mutex);
 		std::sort(current_drives.begin(), current_drives.end());
 		if (current_drives != m_current_drives) {
 			assert(m_callback_evt_handler);
@@ -491,7 +491,7 @@ void RemovableDriveManager::update()
 	} else {
 		// Acquiring the m_iniside_update lock failed, therefore another update is running.
 		// Just block until the other instance of update() finishes.
-		inside_update_lock.acquire(m_inside_update_mutex);
+		inside_update_lock.lock();
 	}
 }
 

src/slic3r/GUI/RemovableDriveManager.hpp

@@ -5,7 +5,7 @@
 #include <string>
 
 #include <boost/thread.hpp>
-#include <tbb/mutex.h>
+#include <mutex>
 #include <condition_variable>
 
 // Custom wxWidget events
@@ -111,9 +111,9 @@ private:
 	// m_current_drives is guarded by m_drives_mutex
 	// sorted ascending by path
 	std::vector<DriveData> 	m_current_drives;
-	mutable tbb::mutex 		m_drives_mutex;
+	mutable std::mutex 		m_drives_mutex;
 	// Locking the update() function to avoid that the function is executed multiple times.
-	mutable tbb::mutex 		m_inside_update_mutex;
+	mutable std::mutex 		m_inside_update_mutex;
 
 	// Returns drive path (same as path in DriveData) if exists otherwise empty string.
 	std::string 			get_removable_drive_from_path(const std::string& path);