Process list: type filter (#294) and secondary sort key (#473)

include/nvtop/interface_common.h

@@ -51,6 +51,16 @@ enum process_field {
   process_cpu_mem_usage,
   process_command,
   process_field_count,
+  // Sentinel used to represent "no sorting field" (e.g. no secondary sort key)
+  process_none = process_field_count,
+};
+
+// Filter applied to the displayed process list based on their workload type
+enum process_type_filter {
+  process_type_filter_all = 0,       // Show every process
+  process_type_filter_compute_only,  // Show compute (and compute+graphical) processes only
+  process_type_filter_graphical_only,// Show graphical (and compute+graphical) processes only
+  process_type_filter_count,
 };
 
 typedef int process_field_displayed;

include/nvtop/interface_internal_common.h

@@ -88,6 +88,7 @@ struct option_window {
   WINDOW *option_win;
   bool last_key_was_number;
   unsigned int input_number;
+  bool sort_by_secondary_active; // F6 sort window: editing the secondary sort key
 };
 
 struct process_window {

include/nvtop/interface_options.h

@@ -43,7 +43,9 @@ typedef struct nvtop_interface_option_struct {
   nvtop_interface_gpu_opts *gpu_specific_opts;      // GPU specific options
   char *config_file_location;                       // Location of the config file
   enum process_field sort_processes_by;             // Specify the field used to order the processes
-  bool sort_descending_order;                       // Sort in descending order
+  enum process_field sort_processes_by_secondary;    // Optional secondary sort field (tie-break), or process_none
+  bool sort_descending_order;                        // Sort in descending order
+  enum process_type_filter process_type_filter;      // Filter the process list by workload type
   int update_interval;                              // Interval between interface update in milliseconds
   process_field_displayed process_fields_displayed; // Which columns of the
                                                     // process list are displayed