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Diffstat (limited to 'src/Classes/UCommon.pas')
| -rw-r--r-- | src/Classes/UCommon.pas | 774 |
1 files changed, 774 insertions, 0 deletions
diff --git a/src/Classes/UCommon.pas b/src/Classes/UCommon.pas new file mode 100644 index 00000000..41e3c1f1 --- /dev/null +++ b/src/Classes/UCommon.pas @@ -0,0 +1,774 @@ +unit UCommon; + +interface + +{$IFDEF FPC} + {$MODE Delphi} +{$ENDIF} + +{$I switches.inc} + +uses + SysUtils, + Classes, + {$IFDEF MSWINDOWS} + Windows, + {$ENDIF} + sdl, + UConfig, + ULog; + +type + TMessageType = ( mtInfo, mtError ); + +procedure ShowMessage( const msg : String; msgType: TMessageType = mtInfo ); + +procedure ConsoleWriteLn(const msg: string); + +function GetResourceStream(const aName, aType : string): TStream; +function RWopsFromStream(Stream: TStream): PSDL_RWops; + +{$IFDEF FPC} +function RandomRange(aMin: Integer; aMax: Integer) : Integer; +{$ENDIF} + +function StringReplaceW(text : WideString; search, rep: WideChar):WideString; +function AdaptFilePaths( const aPath : widestring ): widestring; + +procedure DisableFloatingPointExceptions(); +procedure SetDefaultNumericLocale(); +procedure RestoreNumericLocale(); + +{$IFNDEF MSWINDOWS} + procedure ZeroMemory( Destination: Pointer; Length: DWORD ); + function MakeLong(a, b: Word): Longint; + (* + #define LOBYTE(a) (BYTE)(a) + #define HIBYTE(a) (BYTE)((a)>>8) + #define LOWORD(a) (WORD)(a) + #define HIWORD(a) (WORD)((a)>>16) + #define MAKEWORD(a,b) (WORD)(((a)&0xff)|((b)<<8)) + *) +{$ENDIF} + +function FileExistsInsensitive(var FileName: string): boolean; + +(* + * Character classes + *) + +function IsAlphaChar(ch: WideChar): boolean; +function IsNumericChar(ch: WideChar): boolean; +function IsAlphaNumericChar(ch: WideChar): boolean; +function IsPunctuationChar(ch: WideChar): boolean; +function IsControlChar(ch: WideChar): boolean; + +// A stable alternative to TList.Sort() (use TList.Sort() if applicable, see below) +procedure MergeSort(List: TList; CompareFunc: TListSortCompare); + +function GetAlignedMem(Size: cardinal; Alignment: integer): Pointer; +procedure FreeAlignedMem(P: Pointer); + + +implementation + +uses + Math, + {$IFDEF Delphi} + Dialogs, + {$ENDIF} + UMain; + + +// data used by the ...Locale() functions +{$IFDEF LINUX} + +var + PrevNumLocale: string; + +const + LC_NUMERIC = 1; + +function setlocale(category: integer; locale: pchar): pchar; cdecl; external 'c' name 'setlocale'; + +{$ENDIF} + +// In Linux and maybe MacOSX some units (like cwstring) call setlocale(LC_ALL, '') +// to set the language/country specific locale (e.g. charset) for this application. +// Unfortunately, LC_NUMERIC is set by this call too. +// It defines the decimal-separator and other country-specific numeric settings. +// This parameter is used by the C string-to-float parsing functions atof() and strtod(). +// After changing LC_NUMERIC some external C-based libs (like projectM) are not +// able to parse strings correctly +// (e.g. in Germany "0.9" is not recognized as a valid number anymore but "0,9" is). +// So we reset the numeric settings to the default ('C'). +// Note: The behaviour of Pascal parsing functions (e.g. strtofloat()) is not +// changed by this because it doesn't use the locale-settings. +// TODO: +// - Check if this is needed in MacOSX (at least the locale is set in cwstring) +// - Find out which libs are concerned by this problem. +// If only projectM is concerned by this problem set and restore the numeric locale +// for each call to projectM instead of changing it globally. +procedure SetDefaultNumericLocale(); +begin + {$ifdef LINUX} + PrevNumLocale := setlocale(LC_NUMERIC, nil); + setlocale(LC_NUMERIC, 'C'); + {$endif} +end; + +procedure RestoreNumericLocale(); +begin + {$ifdef LINUX} + setlocale(LC_NUMERIC, PChar(PrevNumLocale)); + {$endif} +end; + +(* + * If an invalid floating point operation was performed the Floating-point unit (FPU) + * generates a Floating-point exception (FPE). Dependending on the settings in + * the FPU's control-register (interrupt mask) the FPE is handled by the FPU itself + * (we will call this as "FPE disabled" later on) or is passed to the application + * (FPE enabled). + * If FPEs are enabled a floating-point division by zero (e.g. 10.0 / 0.0) is + * considered an error and an exception is thrown. Otherwise the FPU will handle + * the error and return the result infinity (INF) (10.0 / 0.0 = INF) without + * throwing an error to the application. + * The same applies to a division by INF that either raises an exception + * (FPE enabled) or returns 0.0 (FPE disabled). + * Normally (as with C-programs), Floating-point exceptions (FPE) are DISABLED + * on program startup (at least with Intel CPUs), but for some strange reasons + * they are ENABLED in pascal (both delphi and FPC) by default. + * Many libs operating with floating-point values rely heavily on the C-specific + * behaviour. So using them in delphi is a ticking time-bomb because sooner or + * later they will crash because of an FPE (this problem occurs massively + * in OpenGL-based libs like projectM). In contrast to this no error will occur + * if the lib is linked to a C-program. + * + * Further info on FPUs: + * For x86 and x86_64 CPUs we have to consider two FPU instruction sets. + * The math co-processor i387 (aka 8087 or x87) set introduced with the i386 + * and SSE (Streaming SIMD Extensions) introduced with the Pentium3. + * Both of them have separate control-registers (x87: FPUControlWord, SSE: MXCSR) + * to control FPEs. Either has (among others) 6bits to enable/disable several + * exception types (Invalid,Denormalized,Zero,Overflow,Underflow,Precision). + * Those exception-types must all be masked (=1) to get the default C behaviour. + * The control-registers can be set with the asm-ops FLDCW (x87) and LDMXCSR (SSE). + * Instead of using assembler code, we can use Set8087CW() provided by delphi and + * FPC to set the x87 control-word. FPC also provides SetSSECSR() for SSE's MXCSR. + * Note that both Delphi and FPC enable FPEs (e.g. for div-by-zero) on program + * startup but only FPC enables FPEs (especially div-by-zero) for SSE too. + * So we have to mask FPEs for x87 in Delphi and FPC and for SSE in FPC only. + * FPC and Delphi both provide a SetExceptionMask() for control of the FPE + * mask. SetExceptionMask() sets the masks for x87 in Delphi and for x87 and SSE + * in FPC (seems as if Delphi [2005] is not SSE aware). So SetExceptionMask() + * is what we need and it even is plattform and CPU independent. + * + * Pascal OpenGL headers (like the Delphi standard ones or JEDI-SDL headers) + * already call Set8087CW() to disable FPEs but due to some bugs in the JEDI-SDL + * headers they do not work properly with FPC. I already patched them, so they + * work at least until they are updated the next time. In addition Set8086CW() + * does not suffice to disable FPEs because the SSE FPEs are not disabled by this. + * FPEs with SSE are a big problem with some libs because many linux distributions + * optimize code for SSE or Pentium3 (for example: int(INF) which convert the + * double value "infinity" to an integer might be automatically optimized by + * using SSE's CVTSD2SI instruction). So SSE FPEs must be turned off in any case + * to make USDX portable. + * + * Summary: + * Call this function on initialization to make sure FPEs are turned off. + * It will solve a lot of errors with FPEs in external libs. + *) +procedure DisableFloatingPointExceptions(); +begin + (* + // We will use SetExceptionMask() instead of Set8087CW()/SetSSECSR(). + // Note: Leave these lines for documentation purposes just in case + // SetExceptionMask() does not work anymore (due to bugs in FPC etc.). + {$IF Defined(CPU386) or Defined(CPUI386) or Defined(CPUX86_64)} + Set8087CW($133F); + {$IFEND} + {$IF Defined(FPC)} + if (has_sse_support) then + SetSSECSR($1F80); + {$IFEND} + *) + + // disable all of the six FPEs (x87 and SSE) to be compatible with C/C++ and + // other libs which rely on the standard FPU behaviour (no div-by-zero FPE anymore). + SetExceptionMask([exInvalidOp, exDenormalized, exZeroDivide, + exOverflow, exUnderflow, exPrecision]); +end; + +function StringReplaceW(text : WideString; search, rep: WideChar) : WideString; +var + iPos : integer; +// sTemp : WideString; +begin +(* + result := text; + iPos := Pos(search, result); + while (iPos > 0) do + begin + sTemp := copy(result, iPos + length(search), length(result)); + result := copy(result, 1, iPos - 1) + rep + sTEmp; + iPos := Pos(search, result); + end; +*) + result := text; + + if search = rep then + exit; + + for iPos := 1 to length(result) do + begin + if result[iPos] = search then + result[iPos] := rep; + end; +end; + +function AdaptFilePaths( const aPath : widestring ): widestring; +begin + result := StringReplaceW( aPath, '\', PathDelim );//, [rfReplaceAll] ); +end; + + +{$IFNDEF MSWINDOWS} +procedure ZeroMemory( Destination: Pointer; Length: DWORD ); +begin + FillChar( Destination^, Length, 0 ); +end; + +function MakeLong(A, B: Word): Longint; +begin + Result := (LongInt(B) shl 16) + A; +end; + +(* +function QueryPerformanceCounter(lpPerformanceCount:TLARGEINTEGER):Bool; + + // From http://en.wikipedia.org/wiki/RDTSC + function RDTSC: Int64; register; + asm + rdtsc + end; + +begin + // Use clock_gettime(CLOCK_REALTIME, ...) here (but not from the libc unit) + lpPerformanceCount := RDTSC(); + result := true; +end; + +function QueryPerformanceFrequency(lpFrequency:TLARGEINTEGER):Bool; +begin + // clock_getres(CLOCK_REALTIME, ...) + lpFrequency := 0; + result := true; +end; +*) +{$ENDIF} + +// Checks if a regular files or directory with the given name exists. +// The comparison is case insensitive. +function FileExistsInsensitive(var FileName: string): boolean; +var + FilePath, LocalFileName: string; + SearchInfo: TSearchRec; +begin +{$IFDEF LINUX} // eddie: Changed FPC to LINUX: Windows and Mac OS X dont have case sensitive file systems + // speed up standard case + if FileExists(FileName) then + begin + Result := true; + exit; + end; + + Result := false; + + FilePath := ExtractFilePath(FileName); + if (FindFirst(FilePath+'*', faAnyFile, SearchInfo) = 0) then + begin + LocalFileName := ExtractFileName(FileName); + repeat + if (AnsiSameText(LocalFileName, SearchInfo.Name)) then + begin + FileName := FilePath + SearchInfo.Name; + Result := true; + break; + end; + until (FindNext(SearchInfo) <> 0); + end; + FindClose(SearchInfo); +{$ELSE} + Result := FileExists(FileName); +{$ENDIF} +end; + + +{$IFDEF Unix} + // include resource-file info (stored in the constant array "resources") + {$I ../resource.inc} +{$ENDIF} + +function GetResourceStream(const aName, aType: string): TStream; +{$IFDEF Unix} +var + ResIndex: integer; + Filename: string; +{$ENDIF} +begin + Result := nil; + + {$IFDEF Unix} + for ResIndex := 0 to High(resources) do + begin + if (resources[ResIndex][0] = aName ) and + (resources[ResIndex][1] = aType ) then + begin + try + Filename := ResourcesPath + resources[ResIndex][2]; + Result := TFileStream.Create(Filename, fmOpenRead); + except + Log.LogError('Failed to open: "'+ resources[ResIndex][2] +'"', 'GetResourceStream'); + end; + exit; + end; + end; + {$ELSE} + try + Result := TResourceStream.Create(HInstance, aName , PChar(aType)); + except + Log.LogError('Invalid resource: "'+ aType + ':' + aName +'"', 'GetResourceStream'); + end; + {$ENDIF} +end; + +// +++++++++++++++++++++ helpers for RWOpsFromStream() +++++++++++++++ + function SdlStreamSeek( context : PSDL_RWops; offset : Integer; whence : Integer ) : integer; cdecl; + var + stream : TStream; + origin : Word; + begin + stream := TStream( context.unknown ); + if ( stream = nil ) then + raise EInvalidContainer.Create( 'SDLStreamSeek on nil' ); + case whence of + 0 : origin := soFromBeginning; // Offset is from the beginning of the resource. Seek moves to the position Offset. Offset must be >= 0. + 1 : origin := soFromCurrent; // Offset is from the current position in the resource. Seek moves to Position + Offset. + 2 : origin := soFromEnd; + else + origin := soFromBeginning; // just in case + end; + Result := stream.Seek( offset, origin ); + end; + + function SdlStreamRead( context : PSDL_RWops; Ptr : Pointer; size : Integer; maxnum: Integer ) : Integer; cdecl; + var + stream : TStream; + begin + stream := TStream( context.unknown ); + if ( stream = nil ) then + raise EInvalidContainer.Create( 'SDLStreamRead on nil' ); + try + Result := stream.read( Ptr^, Size * maxnum ) div size; + except + Result := -1; + end; + end; + + function SDLStreamClose( context : PSDL_RWops ) : Integer; cdecl; + var + stream : TStream; + begin + stream := TStream( context.unknown ); + if ( stream = nil ) then + raise EInvalidContainer.Create( 'SDLStreamClose on nil' ); + stream.Free; + Result := 1; + end; +// ----------------------------------------------- + +(* + * Creates an SDL_RWops handle from a TStream. + * The stream and RWops must be freed by the user after usage. + * Use SDL_FreeRW(...) to free the RWops data-struct. + *) +function RWopsFromStream(Stream: TStream): PSDL_RWops; +begin + Result := SDL_AllocRW(); + if (Result = nil) then + Exit; + + // set RW-callbacks + with Result^ do + begin + unknown := TUnknown(Stream); + seek := SDLStreamSeek; + read := SDLStreamRead; + write := nil; + close := SDLStreamClose; + type_ := 2; + end; +end; + + + +{$IFDEF FPC} +function RandomRange(aMin: Integer; aMax: Integer) : Integer; +begin + RandomRange := Random(aMax-aMin) + aMin ; +end; +{$ENDIF} + + +{$IFDEF FPC} +var + MessageList: TStringList; + ConsoleHandler: TThreadID; + // Note: TRTLCriticalSection is defined in the units System and Libc, use System one + ConsoleCriticalSection: System.TRTLCriticalSection; + ConsoleEvent: PRTLEvent; + ConsoleQuit: boolean; +{$ENDIF} + +(* + * Write to console if one is available. + * It checks if a console is available before output so it will not + * crash on windows if none is available. + * Do not use this function directly because it is not thread-safe, + * use ConsoleWriteLn() instead. + *) +procedure _ConsoleWriteLn(const aString: string); {$IFDEF HasInline}inline;{$ENDIF} +begin + {$IFDEF MSWINDOWS} + // sanity check to avoid crashes with writeln() + if (IsConsole) then + begin + {$ENDIF} + Writeln(aString); + {$IFDEF MSWINDOWS} + end; + {$ENDIF} +end; + +{$IFDEF FPC} +{* + * The console-handlers main-function. + * TODO: create a quit-event on closing. + *} +function ConsoleHandlerFunc(param: pointer): PtrInt; +var + i: integer; + quit: boolean; +begin + quit := false; + while (not quit) do + begin + // wait for new output or quit-request + RTLeventWaitFor(ConsoleEvent); + + System.EnterCriticalSection(ConsoleCriticalSection); + // output pending messages + for i := 0 to MessageList.Count-1 do + begin + _ConsoleWriteLn(MessageList[i]); + end; + MessageList.Clear(); + + // use local quit-variable to avoid accessing + // ConsoleQuit outside of the critical section + if (ConsoleQuit) then + quit := true; + + RTLeventResetEvent(ConsoleEvent); + System.LeaveCriticalSection(ConsoleCriticalSection); + end; + result := 0; +end; +{$ENDIF} + +procedure InitConsoleOutput(); +begin + {$IFDEF FPC} + // init thread-safe output + MessageList := TStringList.Create(); + System.InitCriticalSection(ConsoleCriticalSection); + ConsoleEvent := RTLEventCreate(); + ConsoleQuit := false; + // must be a thread managed by FPC. Otherwise (e.g. SDL-thread) + // it will crash when using Writeln. + ConsoleHandler := BeginThread(@ConsoleHandlerFunc); + {$ENDIF} +end; + +procedure FinalizeConsoleOutput(); +begin + {$IFDEF FPC} + // terminate console-handler + System.EnterCriticalSection(ConsoleCriticalSection); + ConsoleQuit := true; + RTLeventSetEvent(ConsoleEvent); + System.LeaveCriticalSection(ConsoleCriticalSection); + WaitForThreadTerminate(ConsoleHandler, 0); + // free data + System.DoneCriticalsection(ConsoleCriticalSection); + RTLeventDestroy(ConsoleEvent); + MessageList.Free(); + {$ENDIF} +end; + +{* + * With FPC console output is not thread-safe. + * Using WriteLn() from external threads (like in SDL callbacks) + * will damage the heap and crash the program. + * Most probably FPC uses thread-local-data (TLS) to lock a mutex on + * the console-buffer. This does not work with external lib's threads + * because these do not have the TLS data and so it crashes while + * accessing unallocated memory. + * The solution is to create an FPC-managed thread which has the TLS data + * and use it to handle the console-output (hence it is called Console-Handler) + * It should be safe to do so, but maybe FPC requires the main-thread to access + * the console-buffer only. In this case output should be delegated to it. + * + * TODO: - check if it is safe if an FPC-managed thread different than the + * main-thread accesses the console-buffer in FPC. + * - check if Delphi's WriteLn is thread-safe. + * - check if we need to synchronize file-output too + *} +procedure ConsoleWriteLn(const msg: string); +begin +{$IFDEF CONSOLE} + {$IFDEF FPC} + // TODO: check for the main-thread and use a simple _ConsoleWriteLn() then? + //GetCurrentThreadThreadId(); + System.EnterCriticalSection(ConsoleCriticalSection); + MessageList.Add(msg); + RTLeventSetEvent(ConsoleEvent); + System.LeaveCriticalSection(ConsoleCriticalSection); + {$ELSE} + _ConsoleWriteLn(msg); + {$ENDIF} +{$ENDIF} +end; + +procedure ShowMessage(const msg: String; msgType: TMessageType); +{$IFDEF MSWINDOWS} +var Flags: Cardinal; +{$ENDIF} +begin +{$IF Defined(MSWINDOWS)} + case msgType of + mtInfo: Flags := MB_ICONINFORMATION or MB_OK; + mtError: Flags := MB_ICONERROR or MB_OK; + else Flags := MB_OK; + end; + MessageBox(0, PChar(msg), PChar(USDXVersionStr()), Flags); +{$ELSE} + ConsoleWriteln(msg); +{$IFEND} +end; + +function IsAlphaChar(ch: WideChar): boolean; +begin + // TODO: add chars > 255 when unicode-fonts work? + case ch of + 'A'..'Z', // A-Z + 'a'..'z', // a-z + #170,#181,#186, + #192..#214, + #216..#246, + #248..#255: + Result := true; + else + Result := false; + end; +end; + +function IsNumericChar(ch: WideChar): boolean; +begin + case ch of + '0'..'9': + Result := true; + else + Result := false; + end; +end; + +function IsAlphaNumericChar(ch: WideChar): boolean; +begin + Result := (IsAlphaChar(ch) or IsNumericChar(ch)); +end; + +function IsPunctuationChar(ch: WideChar): boolean; +begin + // TODO: add chars outside of Latin1 basic (0..127)? + case ch of + ' '..'/',':'..'@','['..'`','{'..'~': + Result := true; + else + Result := false; + end; +end; + +function IsControlChar(ch: WideChar): boolean; +begin + case ch of + #0..#31, + #127..#159: + Result := true; + else + Result := false; + end; +end; + +(* + * Recursive part of the MergeSort algorithm. + * OutList will be either InList or TempList and will be swapped in each + * depth-level of recursion. By doing this it we can directly merge into the + * output-list. If we only had In- and OutList parameters we had to merge into + * InList after the recursive calls and copy the data to the OutList afterwards. + *) +procedure _MergeSort(InList, TempList, OutList: TList; StartPos, BlockSize: integer; + CompareFunc: TListSortCompare); +var + LeftSize, RightSize: integer; // number of elements in left/right block + LeftEnd, RightEnd: integer; // Index after last element in left/right block + MidPos: integer; // index of first element in right block + Pos: integer; // position in output list +begin + LeftSize := BlockSize div 2; + RightSize := BlockSize - LeftSize; + MidPos := StartPos + LeftSize; + + // sort left and right halves of this block by recursive calls of this function + if (LeftSize >= 2) then + _MergeSort(InList, OutList, TempList, StartPos, LeftSize, CompareFunc) + else + TempList[StartPos] := InList[StartPos]; + if (RightSize >= 2) then + _MergeSort(InList, OutList, TempList, MidPos, RightSize, CompareFunc) + else + TempList[MidPos] := InList[MidPos]; + + // merge sorted left and right sub-lists into output-list + LeftEnd := MidPos; + RightEnd := StartPos + BlockSize; + Pos := StartPos; + while ((StartPos < LeftEnd) and (MidPos < RightEnd)) do + begin + if (CompareFunc(TempList[StartPos], TempList[MidPos]) <= 0) then + begin + OutList[Pos] := TempList[StartPos]; + Inc(StartPos); + end + else + begin + OutList[Pos] := TempList[MidPos]; + Inc(MidPos); + end; + Inc(Pos); + end; + + // copy remaining elements to output-list + while (StartPos < LeftEnd) do + begin + OutList[Pos] := TempList[StartPos]; + Inc(StartPos); + Inc(Pos); + end; + while (MidPos < RightEnd) do + begin + OutList[Pos] := TempList[MidPos]; + Inc(MidPos); + Inc(Pos); + end; +end; + +(* + * Stable alternative to the instable TList.Sort() (uses QuickSort) implementation. + * A stable sorting algorithm preserves preordered items. E.g. if sorting by + * songs by title first and artist afterwards, the songs of each artist will + * be ordered by title. In contrast to this an unstable algorithm (like QuickSort) + * may destroy an existing order, so the songs of an artist will not be ordered + * by title anymore after sorting by artist in the previous example. + * If you do not need a stable algorithm, use TList.Sort() instead. + *) +procedure MergeSort(List: TList; CompareFunc: TListSortCompare); +var + TempList: TList; +begin + TempList := TList.Create(); + TempList.Count := List.Count; + if (List.Count >= 2) then + _MergeSort(List, TempList, List, 0, List.Count, CompareFunc); + TempList.Free; +end; + + +type + // stores the unaligned pointer of data allocated by GetAlignedMem() + PMemAlignHeader = ^TMemAlignHeader; + TMemAlignHeader = Pointer; + +(** + * Use this function to assure that allocated memory is aligned on a specific + * byte boundary. + * Alignment must be a power of 2. + * + * Important: Memory allocated with GetAlignedMem() MUST be freed with + * FreeAlignedMem(), FreeMem() will cause a segmentation fault. + * + * Hint: If you do not need dynamic memory, consider to allocate memory + * statically and use the {$ALIGN x} compiler directive. Note that delphi + * supports an alignment "x" of up to 8 bytes only whereas FPC supports + * alignments on 16 and 32 byte boundaries too. + *) +{$WARNINGS OFF} +function GetAlignedMem(Size: cardinal; Alignment: integer): Pointer; +var + OrigPtr: Pointer; +const + MIN_ALIGNMENT = 16; +begin + // Delphi and FPC (tested with 2.2.0) align memory blocks allocated with + // GetMem() at least on 8 byte boundaries. Delphi uses a minimal alignment + // of either 8 or 16 bytes depending on the size of the requested block + // (see System.GetMinimumBlockAlignment). As we do not want to change the + // boundary for the worse, we align at least on MIN_ALIGN. + if (Alignment < MIN_ALIGNMENT) then + Alignment := MIN_ALIGNMENT; + + // allocate unaligned memory + GetMem(OrigPtr, SizeOf(TMemAlignHeader) + Size + Alignment); + if (OrigPtr = nil) then + begin + Result := nil; + Exit; + end; + + // reserve space for the header + Result := Pointer(PtrUInt(OrigPtr) + SizeOf(TMemAlignHeader)); + // align memory + Result := Pointer(PtrUInt(Result) + Alignment - PtrUInt(Result) mod Alignment); + + // set header with info on old pointer for FreeMem + PMemAlignHeader(PtrUInt(Result) - SizeOf(TMemAlignHeader))^ := OrigPtr; +end; +{$WARNINGS ON} + +{$WARNINGS OFF} +procedure FreeAlignedMem(P: Pointer); +begin + if (P <> nil) then + FreeMem(PMemAlignHeader(PtrUInt(P) - SizeOf(TMemAlignHeader))^); +end; +{$WARNINGS ON} + + +initialization + InitConsoleOutput(); + +finalization + FinalizeConsoleOutput(); + +end. |