ENH: CLI: add time estimation for non-cache slicing

JIRA: XXXX
Change-Id: Ifed2d70e8d6355087694df96e413cdbcf792d6d9

src/libslic3r/Print.cpp

@@ -10,6 +10,7 @@
 #include "ShortestPath.hpp"
 #include "SupportMaterial.hpp"
 #include "Thread.hpp"
+#include "Time.hpp"
 #include "GCode.hpp"
 #include "GCode/WipeTower.hpp"
 #include "Utils.hpp"
@@ -1479,8 +1480,12 @@ std::map<ObjectID, unsigned int> getObjectExtruderMap(const Print& print) {
 }
 
 // Slicing process, running at a background thread.
-void Print::process(bool use_cache)
+void Print::process(long long *time_cost_with_cache, bool use_cache)
 {
+    long long start_time = 0, end_time = 0;
+    if (time_cost_with_cache)
+        *time_cost_with_cache = 0;
+
     name_tbb_thread_pool_threads_set_locale();
 
     //compute the PrintObject with the same geometries
@@ -1680,6 +1685,9 @@ void Print::process(bool use_cache)
     if (this->set_started(psSkirtBrim)) {
         this->set_status(70, L("Generating skirt & brim"));
 
+        if (time_cost_with_cache)
+            start_time = (long long)Slic3r::Utils::get_current_time_utc();
+
         m_skirt.clear();
         m_skirt_convex_hull.clear();
         m_first_layer_convex_hull.points.clear();
@@ -1764,6 +1772,11 @@ void Print::process(bool use_cache)
 
         this->finalize_first_layer_convex_hull();
         this->set_done(psSkirtBrim);
+
+        if (time_cost_with_cache) {
+            end_time = (long long)Slic3r::Utils::get_current_time_utc();
+            *time_cost_with_cache = *time_cost_with_cache + end_time - start_time;
+        }
     }
     //BBS
     for (PrintObject *obj : m_objects) {

src/libslic3r/Print.hpp

@@ -698,7 +698,7 @@ public:
 
     ApplyStatus         apply(const Model &model, DynamicPrintConfig config) override;
 
-    void                process(bool use_cache = false) override;
+    void                process(long long *time_cost_with_cache = nullptr, bool use_cache = false) override;
     // Exports G-code into a file name based on the path_template, returns the file path of the generated G-code file.
     // If preview_data is not null, the preview_data is filled in for the G-code visualization (not used by the command line Slic3r).
     std::string         export_gcode(const std::string& path_template, GCodeProcessorResult* result, ThumbnailsGeneratorCallback thumbnail_cb = nullptr);

src/libslic3r/PrintBase.hpp

@@ -422,7 +422,7 @@ public:
     // After calling the apply() function, call set_task() to limit the task to be processed by process().
     virtual void            set_task(const TaskParams &params) {}
     // Perform the calculation. This is the only method that is to be called at a worker thread.
-    virtual void            process(bool use_cache = false) = 0;
+    virtual void            process(long long *time_cost_with_cache = nullptr, bool use_cache = false) = 0;
     virtual int             export_cached_data(const std::string& dir_path, bool with_space=false) { return 0;}
     virtual int            load_cached_data(const std::string& directory) { return 0;}
     // Clean up after process() finished, either with success, error or if canceled.

src/libslic3r/SLAPrint.cpp

@@ -686,7 +686,7 @@ bool SLAPrint::invalidate_step(SLAPrintStep step)
     return invalidated;
 }
 
-void SLAPrint::process(bool use_cache)
+void SLAPrint::process(long long *time_cost_with_cache, bool use_cache)
 {
     if (m_objects.empty())
         return;

src/libslic3r/SLAPrint.hpp

@@ -451,7 +451,7 @@ public:
     std::vector<ObjectID> print_object_ids() const override;
     ApplyStatus         apply(const Model &model, DynamicPrintConfig config) override;
     void                set_task(const TaskParams &params) override;
-    void                process(bool use_cache = false) override;
+    void                process(long long *time_cost_with_cache = nullptr, bool use_cache = false) override;
     void                finalize() override;
     // Returns true if an object step is done on all objects and there's at least one object.
     bool                is_step_done(SLAPrintObjectStep step) const;