ProcessList: sort before panel rebuild if needed

Author: tanriol

Action.c

@@ -189,8 +189,7 @@ static Htop_Reaction actionSetSortColumn(State* st) {
    }
    Object_delete(sortPanel);
 
-   if (st->pauseProcessUpdate)
-      ProcessList_sort(st->pl);
+   st->pl->needsSort = true;
 
    return reaction | HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
 }
@@ -281,8 +280,7 @@ static Htop_Reaction actionLowerPriority(State* st) {
 
 static Htop_Reaction actionInvertSortOrder(State* st) {
    ScreenSettings_invertSortOrder(st->settings->ss);
-   if (st->pauseProcessUpdate)
-      ProcessList_sort(st->pl);
+   st->pl->needsSort = true;
    return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING;
 }
 

ProcessList.c

@@ -27,6 +27,7 @@ ProcessList* ProcessList_init(ProcessList* this, const ObjectClass* klass, Users
    this->processTable = Hashtable_new(200, false);
    this->displayTreeSet = Hashtable_new(200, false);
    this->draftingTreeSet = Hashtable_new(200, false);
+   this->needsSort = true;
 
    this->usersTable = usersTable;
    this->pidMatchList = pidMatchList;
@@ -496,6 +497,7 @@ void ProcessList_sort(ProcessList* this) {
    } else {
       Vector_insertionSort(this->processes);
    }
+   this->needsSort = false;
 }
 
 ProcessField ProcessList_keyAt(const ProcessList* this, int at) {
@@ -531,6 +533,9 @@ void ProcessList_collapseAllBranches(ProcessList* this) {
 }
 
 void ProcessList_rebuildPanel(ProcessList* this) {
+   if (this->needsSort)
+      ProcessList_sort(this);
+
    const char* incFilter = this->incFilter;
 
    const int currPos = Panel_getSelectedIndex(this->panel);

ProcessList.h

@@ -50,6 +50,7 @@ typedef struct ProcessList_ {
 
    Hashtable* displayTreeSet;
    Hashtable* draftingTreeSet;
+   bool needsSort;
 
    Hashtable* dynamicMeters;  /* runtime-discovered meters */
    Hashtable* dynamicColumns; /* runtime-discovered Columns */

ScreenManager.c

@@ -126,7 +126,7 @@ static void checkRecalculation(ScreenManager* this, double* oldTime, int* sortTi
       // always update header, especially to avoid gaps in graph meters
       Header_updateData(this->header);
       if (!this->state->pauseProcessUpdate && (*sortTimeout == 0 || this->settings->ss->treeView)) {
-         ProcessList_sort(pl);
+         pl->needsSort = true;
          *sortTimeout = 1;
       }
       // force redraw if the number of UID digits was changed