diff options
Diffstat (limited to 'Game/Code/Classes/UServices.pas')
-rw-r--r-- | Game/Code/Classes/UServices.pas | 686 |
1 files changed, 356 insertions, 330 deletions
diff --git a/Game/Code/Classes/UServices.pas b/Game/Code/Classes/UServices.pas index 19561eeb..cb03248e 100644 --- a/Game/Code/Classes/UServices.pas +++ b/Game/Code/Classes/UServices.pas @@ -1,330 +1,356 @@ -unit UServices; - -interface - -{$IFDEF FPC} - {$MODE Delphi} -{$ENDIF} - -{$I switches.inc} - -uses uPluginDefs, - SysUtils; -{********************* - TServiceManager - Class for saving, managing and calling of Services. - Saves all Services and their Procs -*********************} - -type - TServiceName = String[60]; - PServiceInfo = ^TServiceInfo; - TServiceInfo = record - Self: THandle; //Handle of this Service - Hash: Integer; //4 Bit Hash of the Services Name - Name: TServiceName; //Name of this Service - - Owner: Integer; //If < 0 [-(DLLMan Pluginindex + 1)]; 0 - undefined, On Error Full shutdown, If < 0 [ModuleIndex - 1] - - Next: PServiceInfo; //Pointer to the Next Service in teh list - - //Here is s/t tricky - //To avoid writing of Wrapping Functions to offer a Service from a Class - //We save a Normal Proc or a Method of a Class - Case isClass: boolean of - False: (Proc: TUS_Service); //Proc that will be called on Event - True: (ProcOfClass: TUS_Service_of_Object); - end; - - TServiceManager = class - private - //Managing Service List - FirstService: PServiceInfo; - LastService: PServiceInfo; - - //Some Speed improvement by caching the last 4 called Services - //Most of the time a Service is called multiple times - ServiceCache: Array[0..3] of PServiceInfo; - NextCacheItem: Byte; - - //Next Service added gets this Handle: - NextHandle: THandle; - public - Constructor Create; - - Function AddService(const ServiceName: PChar; const Proc: TUS_Service = nil; const ProcofClass: TUS_Service_of_Object = nil): THandle; - Function DelService(const hService: THandle): integer; - - Function CallService(const ServiceName: PChar; const wParam: TwParam; lParam: TlParam): integer; - - Function NametoHash(const ServiceName: TServiceName): Integer; - Function ServiceExists(const ServiceName: PChar): Integer; - end; - -var - ServiceManager: TServiceManager; - -implementation -uses - ULog, - UCore; - -//------------ -// Create - Creates Class and Set Standard Values -//------------ -Constructor TServiceManager.Create; -begin - FirstService := nil; - LastService := nil; - - ServiceCache[0] := nil; - ServiceCache[1] := nil; - ServiceCache[2] := nil; - ServiceCache[3] := nil; - - NextCacheItem := 0; - - NextHandle := 1; - - {$IFDEF DEBUG} - debugWriteln('ServiceManager: Succesful created!'); - {$ENDIF} -end; - -//------------ -// Function Creates a new Service and Returns the Services Handle, -// 0 on Failure. (Name already exists) -//------------ -Function TServiceManager.AddService(const ServiceName: PChar; const Proc: TUS_Service; const ProcofClass: TUS_Service_of_Object): THandle; -var - Cur: PServiceInfo; -begin - Result := 0; - - If (@Proc <> nil) or (@ProcOfClass <> nil) then - begin - If (ServiceExists(ServiceName) = 0) then - begin //There is a Proc and the Service does not already exist - //Ok Add it! - - //Get Memory - GetMem(Cur, SizeOf(TServiceInfo)); - - //Fill it with Data - Cur.Next := nil; - - If (@Proc = nil) then - begin //Use the ProcofClass Method - Cur.isClass := True; - Cur.ProcOfClass := ProcofClass; - end - else //Use the normal Proc - begin - Cur.isClass := False; - Cur.Proc := Proc; - end; - - Cur.Self := NextHandle; - //Zero Name - Cur.Name := #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0; - Cur.Name := String(ServiceName); - Cur.Hash := NametoHash(Cur.Name); - - //Add Owner to Service - Cur.Owner := Core.CurExecuted; - - //Add Service to the List - If (FirstService = nil) then - FirstService := Cur; - - If (LastService <> nil) then - LastService.Next := Cur; - - LastService := Cur; - - {$IFDEF DEBUG} - debugWriteln('ServiceManager: Service added: ''' + ServiceName + ''', Handle: ' + InttoStr(Cur.Self)); - {$ENDIF} - - //Inc Next Handle - Inc(NextHandle); - end - {$IFDEF DEBUG} - else debugWriteln('ServiceManager: Try to readd Service: ' + ServiceName); - {$ENDIF} - end; -end; - -//------------ -// Function Destroys a Service, 0 on success, not 0 on Failure -//------------ -Function TServiceManager.DelService(const hService: THandle): integer; -var - Last, Cur: PServiceInfo; - I: Integer; -begin - Result := -1; - - Last := nil; - Cur := FirstService; - - //Search for Service to Delete - While (Cur <> nil) do - begin - If (Cur.Self = hService) then - begin //Found Service => Delete it - - //Delete from List - If (Last = nil) then //Found first Service - FirstService := Cur.Next - Else //Service behind the first - Last.Next := Cur.Next; - - //IF this is the LastService, correct LastService - If (Cur = LastService) then - LastService := Last; - - //Search for Service in Cache and delete it if found - For I := 0 to High(ServiceCache) do - If (ServiceCache[I] = Cur) then - begin - ServiceCache[I] := nil; - end; - - {$IFDEF DEBUG} - debugWriteln('ServiceManager: Removed Service succesful: ' + Cur.Name); - {$ENDIF} - - //Free Memory - Freemem(Cur, SizeOf(TServiceInfo)); - - //Break the Loop - Break; - end; - - //Go to Next Service - Last := Cur; - Cur := Cur.Next; - end; -end; - -//------------ -// Function Calls a Services Proc -// Returns Services Return Value or SERVICE_NOT_FOUND on Failure -//------------ -Function TServiceManager.CallService(const ServiceName: PChar; const wParam: TwParam; lParam: TlParam): integer; -var - SExists: Integer; - Service: PServiceInfo; - CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute -begin - Result := SERVICE_NOT_FOUND; - SExists := ServiceExists(ServiceName); - If (SExists <> 0) then - begin - //Backup CurExecuted - CurExecutedBackup := Core.CurExecuted; - - Service := Pointer(SExists); - - If (Service.isClass) then - //Use Proc of Class - // FIXME: "function ... of object" does not fit into an integer (2x pointers: object + function-code -> 8byte on x86) - Result := Service.ProcOfClass(wParam, lParam) - Else - //Use normal Proc - // FIXME: will not work with x64 CPUs, pointers will be 64bit there - Result := Service.Proc(wParam, lParam); - - //Restore CurExecuted - Core.CurExecuted := CurExecutedBackup; - end; - - {$IFDEF DEBUG} - debugWriteln('ServiceManager: Service ''' + ServiceName + ''' called. Result: ' + InttoStr(Result)); - {$ENDIF} -end; - -//------------ -// Generates the Hash for the given Name -//------------ -Function TServiceManager.NametoHash(const ServiceName: TServiceName): Integer; -asm - { CL: Counter; EAX: Result; EDX: Current Memory Address } - Mov ECX, 14 {Init Counter, Fold 14 Times to get 4 Bytes out of 60} - - Mov EDX, ServiceName {Save Address of String that should be "Hashed"} - - Mov EAX, [EDX] - - @FoldLoop: ADD EDX, 4 {jump 4 Byte(32 Bit) to the next tile } - ADD EAX, [EDX] {Add the Value of the next 4 Byte of the String to the Hash} - - LOOP @FoldLoop {Fold again if there are Chars Left} -end; - - -//------------ -// Function Returns Non Zero if a Service with the given Name Exists, otherwise 0 -//------------ -Function TServiceManager.ServiceExists(const ServiceName: PChar): Integer; -var - Name: TServiceName; - Hash: Integer; - Cur: PServiceInfo; - I: Byte; -begin - Result := 0; - // to-do : Write a Metbod (in ASM) to Zero and Add in one turn (faster then this dirty hack ;) - //Zero Name: - Name := #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0; - //Add Service Name - Name := String(ServiceName); - Hash := NametoHash(Name); - - //First of all Look for the Service in Cache - For I := 0 to High(ServiceCache) do - begin - If (ServiceCache[I] <> nil) AND (ServiceCache[I].Hash = Hash) then - begin - If (ServiceCache[I].Name = Name) then - begin //Found Service in Cache - Result := Integer(ServiceCache[I]); - - {$IFDEF DEBUG} - debugWriteln('ServiceManager: Found Service in Cache: ''' + ServiceName + ''''); - {$ENDIF} - - Break; - end; - end; - end; - - If (Result = 0) then - begin - Cur := FirstService; - While (Cur <> nil) do - begin - If (Cur.Hash = Hash) then - begin - If (Cur.Name = Name) then - begin //Found the Service - Result := Integer(Cur); - - {$IFDEF DEBUG} - debugWriteln('ServiceManager: Found Service in List: ''' + ServiceName + ''''); - {$ENDIF} - - //Add to Cache - ServiceCache[NextCacheItem] := Cur; - NextCacheItem := (NextCacheItem + 1) AND 3; - Break; - end; - end; - - Cur := Cur.Next; - end; - end; -end; - -end. +unit UServices;
+
+interface
+
+{$IFDEF FPC}
+ {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+{$IFDEF FPC}
+ {$ASMMODE Intel}
+{$ENDIF}
+
+uses uPluginDefs,
+ SysUtils;
+{*********************
+ TServiceManager
+ Class for saving, managing and calling of Services.
+ Saves all Services and their Procs
+*********************}
+
+type
+ TServiceName = String[60];
+ PServiceInfo = ^TServiceInfo;
+ TServiceInfo = record
+ Self: THandle; //Handle of this Service
+ Hash: Integer; //4 Bit Hash of the Services Name
+ Name: TServiceName; //Name of this Service
+
+ Owner: Integer; //If < 0 [-(DLLMan Pluginindex + 1)]; 0 - undefined, On Error Full shutdown, If < 0 [ModuleIndex - 1]
+
+ Next: PServiceInfo; //Pointer to the Next Service in teh list
+
+ //Here is s/t tricky
+ //To avoid writing of Wrapping Functions to offer a Service from a Class
+ //We save a Normal Proc or a Method of a Class
+ Case isClass: boolean of
+ False: (Proc: TUS_Service); //Proc that will be called on Event
+ True: (ProcOfClass: TUS_Service_of_Object);
+ end;
+
+ TServiceManager = class
+ private
+ //Managing Service List
+ FirstService: PServiceInfo;
+ LastService: PServiceInfo;
+
+ //Some Speed improvement by caching the last 4 called Services
+ //Most of the time a Service is called multiple times
+ ServiceCache: Array[0..3] of PServiceInfo;
+ NextCacheItem: Byte;
+
+ //Next Service added gets this Handle:
+ NextHandle: THandle;
+ public
+ Constructor Create;
+
+ Function AddService(const ServiceName: PChar; const Proc: TUS_Service = nil; const ProcofClass: TUS_Service_of_Object = nil): THandle;
+ Function DelService(const hService: THandle): integer;
+
+ Function CallService(const ServiceName: PChar; const wParam: TwParam; lParam: TlParam): integer;
+
+ Function NametoHash(const ServiceName: TServiceName): Integer;
+ Function ServiceExists(const ServiceName: PChar): Integer;
+ end;
+
+var
+ ServiceManager: TServiceManager;
+
+implementation
+uses
+ ULog,
+ UCore;
+
+//------------
+// Create - Creates Class and Set Standard Values
+//------------
+Constructor TServiceManager.Create;
+begin
+ FirstService := nil;
+ LastService := nil;
+
+ ServiceCache[0] := nil;
+ ServiceCache[1] := nil;
+ ServiceCache[2] := nil;
+ ServiceCache[3] := nil;
+
+ NextCacheItem := 0;
+
+ NextHandle := 1;
+
+ {$IFDEF DEBUG}
+ debugWriteln('ServiceManager: Succesful created!');
+ {$ENDIF}
+end;
+
+//------------
+// Function Creates a new Service and Returns the Services Handle,
+// 0 on Failure. (Name already exists)
+//------------
+Function TServiceManager.AddService(const ServiceName: PChar; const Proc: TUS_Service; const ProcofClass: TUS_Service_of_Object): THandle;
+var
+ Cur: PServiceInfo;
+begin
+ Result := 0;
+
+ If (@Proc <> nil) or (@ProcOfClass <> nil) then
+ begin
+ If (ServiceExists(ServiceName) = 0) then
+ begin //There is a Proc and the Service does not already exist
+ //Ok Add it!
+
+ //Get Memory
+ GetMem(Cur, SizeOf(TServiceInfo));
+
+ //Fill it with Data
+ Cur.Next := nil;
+
+ If (@Proc = nil) then
+ begin //Use the ProcofClass Method
+ Cur.isClass := True;
+ Cur.ProcOfClass := ProcofClass;
+ end
+ else //Use the normal Proc
+ begin
+ Cur.isClass := False;
+ Cur.Proc := Proc;
+ end;
+
+ Cur.Self := NextHandle;
+ //Zero Name
+ Cur.Name := #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0;
+ Cur.Name := String(ServiceName);
+ Cur.Hash := NametoHash(Cur.Name);
+
+ //Add Owner to Service
+ Cur.Owner := Core.CurExecuted;
+
+ //Add Service to the List
+ If (FirstService = nil) then
+ FirstService := Cur;
+
+ If (LastService <> nil) then
+ LastService.Next := Cur;
+
+ LastService := Cur;
+
+ {$IFDEF DEBUG}
+ debugWriteln('ServiceManager: Service added: ''' + ServiceName + ''', Handle: ' + InttoStr(Cur.Self));
+ {$ENDIF}
+
+ //Inc Next Handle
+ Inc(NextHandle);
+ end
+ {$IFDEF DEBUG}
+ else debugWriteln('ServiceManager: Try to readd Service: ' + ServiceName);
+ {$ENDIF}
+ end;
+end;
+
+//------------
+// Function Destroys a Service, 0 on success, not 0 on Failure
+//------------
+Function TServiceManager.DelService(const hService: THandle): integer;
+var
+ Last, Cur: PServiceInfo;
+ I: Integer;
+begin
+ Result := -1;
+
+ Last := nil;
+ Cur := FirstService;
+
+ //Search for Service to Delete
+ While (Cur <> nil) do
+ begin
+ If (Cur.Self = hService) then
+ begin //Found Service => Delete it
+
+ //Delete from List
+ If (Last = nil) then //Found first Service
+ FirstService := Cur.Next
+ Else //Service behind the first
+ Last.Next := Cur.Next;
+
+ //IF this is the LastService, correct LastService
+ If (Cur = LastService) then
+ LastService := Last;
+
+ //Search for Service in Cache and delete it if found
+ For I := 0 to High(ServiceCache) do
+ If (ServiceCache[I] = Cur) then
+ begin
+ ServiceCache[I] := nil;
+ end;
+
+ {$IFDEF DEBUG}
+ debugWriteln('ServiceManager: Removed Service succesful: ' + Cur.Name);
+ {$ENDIF}
+
+ //Free Memory
+ Freemem(Cur, SizeOf(TServiceInfo));
+
+ //Break the Loop
+ Break;
+ end;
+
+ //Go to Next Service
+ Last := Cur;
+ Cur := Cur.Next;
+ end;
+end;
+
+//------------
+// Function Calls a Services Proc
+// Returns Services Return Value or SERVICE_NOT_FOUND on Failure
+//------------
+Function TServiceManager.CallService(const ServiceName: PChar; const wParam: TwParam; lParam: TlParam): integer;
+var
+ SExists: Integer;
+ Service: PServiceInfo;
+ CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute
+begin
+ Result := SERVICE_NOT_FOUND;
+ SExists := ServiceExists(ServiceName);
+ If (SExists <> 0) then
+ begin
+ //Backup CurExecuted
+ CurExecutedBackup := Core.CurExecuted;
+
+ Service := Pointer(SExists);
+
+ If (Service.isClass) then
+ //Use Proc of Class
+ // FIXME: "function ... of object" does not fit into an integer (2x pointers: object + function-code -> 8byte on x86)
+ Result := Service.ProcOfClass(wParam, lParam)
+ Else
+ //Use normal Proc
+ // FIXME: will not work with x64 CPUs, pointers will be 64bit there
+ Result := Service.Proc(wParam, lParam);
+
+ //Restore CurExecuted
+ Core.CurExecuted := CurExecutedBackup;
+ end;
+
+ {$IFDEF DEBUG}
+ debugWriteln('ServiceManager: Service ''' + ServiceName + ''' called. Result: ' + InttoStr(Result));
+ {$ENDIF}
+end;
+
+//------------
+// Generates the Hash for the given Name
+//------------
+Function TServiceManager.NametoHash(const ServiceName: TServiceName): Integer;
+// FIXME: check if the non-asm version is fast enough and use it by default if so
+{$IF Defined(CPUX86_64)}
+asm
+ { CL: Counter; RAX: Result; RDX: Current Memory Address }
+ Mov RCX, 14
+ Mov RDX, ServiceName {Save Address of String that should be "Hashed"}
+ Mov RAX, [RDX]
+ @FoldLoop: ADD RDX, 4 {jump 4 Byte(32 Bit) to the next tile }
+ ADD RAX, [RDX] {Add the Value of the next 4 Byte of the String to the Hash}
+ LOOP @FoldLoop {Fold again if there are Chars Left}
+end;
+{$ELSEIF Defined(CPU386) or Defined(CPUI386)}
+asm
+ { CL: Counter; EAX: Result; EDX: Current Memory Address }
+ Mov ECX, 14 {Init Counter, Fold 14 Times to get 4 Bytes out of 60}
+ Mov EDX, ServiceName {Save Address of String that should be "Hashed"}
+ Mov EAX, [EDX]
+ @FoldLoop: ADD EDX, 4 {jump 4 Byte(32 Bit) to the next tile }
+ ADD EAX, [EDX] {Add the Value of the next 4 Byte of the String to the Hash}
+ LOOP @FoldLoop {Fold again if there are Chars Left}
+end;
+{$ELSE}
+var
+ i: integer;
+ ptr: ^integer;
+begin
+ ptr := @ServiceName;
+ Result := 0;
+ for i := 1 to 14 do
+ begin
+ Result := Result + ptr^;
+ Inc(ptr);
+ end;
+end;
+{$IFEND}
+
+
+//------------
+// Function Returns Non Zero if a Service with the given Name Exists, otherwise 0
+//------------
+Function TServiceManager.ServiceExists(const ServiceName: PChar): Integer;
+var
+ Name: TServiceName;
+ Hash: Integer;
+ Cur: PServiceInfo;
+ I: Byte;
+begin
+ Result := 0;
+ // to-do : Write a Metbod (in ASM) to Zero and Add in one turn (faster then this dirty hack ;)
+ //Zero Name:
+ Name := #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0 + #0;
+ //Add Service Name
+ Name := String(ServiceName);
+ Hash := NametoHash(Name);
+
+ //First of all Look for the Service in Cache
+ For I := 0 to High(ServiceCache) do
+ begin
+ If (ServiceCache[I] <> nil) AND (ServiceCache[I].Hash = Hash) then
+ begin
+ If (ServiceCache[I].Name = Name) then
+ begin //Found Service in Cache
+ Result := Integer(ServiceCache[I]);
+
+ {$IFDEF DEBUG}
+ debugWriteln('ServiceManager: Found Service in Cache: ''' + ServiceName + '''');
+ {$ENDIF}
+
+ Break;
+ end;
+ end;
+ end;
+
+ If (Result = 0) then
+ begin
+ Cur := FirstService;
+ While (Cur <> nil) do
+ begin
+ If (Cur.Hash = Hash) then
+ begin
+ If (Cur.Name = Name) then
+ begin //Found the Service
+ Result := Integer(Cur);
+
+ {$IFDEF DEBUG}
+ debugWriteln('ServiceManager: Found Service in List: ''' + ServiceName + '''');
+ {$ENDIF}
+
+ //Add to Cache
+ ServiceCache[NextCacheItem] := Cur;
+ NextCacheItem := (NextCacheItem + 1) AND 3;
+ Break;
+ end;
+ end;
+
+ Cur := Cur.Next;
+ end;
+ end;
+end;
+
+end.
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