Merge pull request #14 from XakerTwo/fix_div0

Fix dividing by zero

Author: henrypp

src/routine.c

@@ -9168,8 +9168,8 @@ NTSTATUS _r_sys_getmemoryinfo (
 
 		out_buffer->physical_memory.used_bytes = out_buffer->physical_memory.total_bytes - out_buffer->physical_memory.free_bytes;
 
-		out_buffer->physical_memory.percent = (ULONG)PR_CALC_PERCENTOF (out_buffer->physical_memory.used_bytes, out_buffer->physical_memory.total_bytes);
 		out_buffer->physical_memory.percent_f = PR_CALC_PERCENTOF (out_buffer->physical_memory.used_bytes, out_buffer->physical_memory.total_bytes);
+		out_buffer->physical_memory.percent = (ULONG)out_buffer->physical_memory.percent_f;
 	}
 
 	// file cache information
@@ -9181,8 +9181,8 @@ NTSTATUS _r_sys_getmemoryinfo (
 		out_buffer->system_cache.free_bytes = (ULONG64)sfci.PeakSize - (ULONG64)sfci.CurrentSize;
 		out_buffer->system_cache.used_bytes = sfci.CurrentSize;
 
-		out_buffer->system_cache.percent = (ULONG)PR_CALC_PERCENTOF (out_buffer->system_cache.used_bytes, out_buffer->system_cache.total_bytes);
 		out_buffer->system_cache.percent_f = PR_CALC_PERCENTOF (out_buffer->system_cache.used_bytes, out_buffer->system_cache.total_bytes);
+		out_buffer->system_cache.percent = (ULONG)out_buffer->system_cache.percent_f;
 	}
 
 	// page file information
@@ -9214,8 +9214,9 @@ NTSTATUS _r_sys_getmemoryinfo (
 			pagefile = pagefile->NextEntryOffset ? PTR_ADD_OFFSET (pagefile, pagefile->NextEntryOffset) : NULL;
 		}
 
-		out_buffer->page_file.percent = (ULONG)PR_CALC_PERCENTOF (out_buffer->page_file.used_bytes, out_buffer->page_file.total_bytes);
-		out_buffer->page_file.percent_f = PR_CALC_PERCENTOF (out_buffer->page_file.used_bytes, out_buffer->page_file.total_bytes);
+		//memory are zeroed at start - no need to reassign zero
+		if (out_buffer->page_file.total_bytes) out_buffer->page_file.percent_f = PR_CALC_PERCENTOF (out_buffer->page_file.used_bytes, out_buffer->page_file.total_bytes);
+		out_buffer->page_file.percent = (ULONG)out_buffer->page_file.percent_f;
 	}
 
 	_r_mem_free (pagefiles);

src/routine.h

@@ -5586,6 +5586,16 @@ FORCEINLINE BOOLEAN _r_listview_deleteallitems (
 	return (_r_wnd_sendmessage (hwnd, ctrl_id, LVM_DELETEALLITEMS, 0, 0) == TRUE);
 }
 
+FORCEINLINE VOID _r_listview_reset (
+	_In_ HWND hwnd,
+	_In_opt_ INT ctrl_id
+)
+{
+	_r_listview_deleteallitems(hwnd, ctrl_id);
+	_r_listview_deleteallgroups(hwnd, ctrl_id);
+	_r_listview_deleteallcolumns(hwnd, ctrl_id);
+}
+
 FORCEINLINE BOOLEAN _r_listview_deleteitem (
 	_In_ HWND hwnd,
 	_In_opt_ INT ctrl_id,