DataMuseum.dk Presents historical artifacts from the history of: Rational R1000/400

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⟦4e91b722e⟧ Ada Source

    Length: 4096 (0x1000)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, generic, package Direct_Io, pragma Module_Name 4 3203, pragma Segmented_Heap File_Type, pragma Subsystem Input_Output, seg_000096

Derivation

└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─⟦5a81ac88f⟧ »Space Info Vol 1« 
        └─⟦this⟧ 

with Io_Exceptions;
with Device_Independent_Io;

generic
    type Element_Type is private;
    pragma Must_Be_Constrained (Element_Type);
package Direct_Io is

    pragma Subsystem (Input_Output);
    pragma Module_Name (4, 3203);

    type File_Type is limited private;

    type File_Mode is (In_File, Inout_File, Out_File);

    type Count is new Integer range 0 .. Integer'Last / Element_Type'Size;

    subtype Positive_Count is Count range 1 .. Count'Last;


    -- File management


    procedure Create (File : in out File_Type;
                      Mode : File_Mode := Inout_File;
                      Name : String := "";
                      Form : String := "");

    procedure Open (File : in out File_Type;
                    Mode : File_Mode;
                    Name : String;
                    Form : String := "");

    procedure Close (File : in out File_Type);
    procedure Delete (File : in out File_Type);
    procedure Reset (File : in out File_Type; Mode : File_Mode);
    procedure Reset (File : in out File_Type);

    function Mode (File : File_Type) return File_Mode;
    function Name (File : File_Type) return String;
    function Form (File : File_Type) return String;

    function Is_Open (File : File_Type) return Boolean;

    -- Input and output operations

    procedure Read (File : File_Type;
                    Item : out Element_Type;
                    From : Positive_Count);
    procedure Read (File : File_Type; Item : out Element_Type);

    procedure Write (File : File_Type;
                     Item : Element_Type;
                     To : Positive_Count);
    procedure Write (File : File_Type; Item : Element_Type);

    procedure Set_Index (File : File_Type; To : Positive_Count);

    function Index (File : File_Type) return Positive_Count;
    function Size (File : File_Type) return Count;

    function End_Of_File (File : File_Type) return Boolean;


    -- Exceptions

    Status_Error : exception renames Io_Exceptions.Status_Error;
    Mode_Error : exception renames Io_Exceptions.Mode_Error;
    Name_Error : exception renames Io_Exceptions.Name_Error;
    Use_Error : exception renames Io_Exceptions.Use_Error;
    Device_Error : exception renames Io_Exceptions.Device_Error;
    End_Error : exception renames Io_Exceptions.End_Error;
    Data_Error : exception renames Io_Exceptions.Data_Error;

private
    -- implementation dependent
    type File_Descriptor;
    type File_Type is access File_Descriptor;
    pragma Segmented_Heap (File_Type);
end Direct_Io;

    nblk1=3
    nid=0
    hdr6=6
        [0x00] rec0=25 rec1=00 rec2=01 rec3=012
        [0x01] rec0=1a rec1=00 rec2=02 rec3=066
        [0x02] rec0=13 rec1=00 rec2=03 rec3=000
    tail 0x2070000a27b6a4b18346b 0x42a00088462062003