⟦6f516fde2⟧

E3 Source Code




-- Copyright 1986, 1987, 1988, 1989, 1992 Verdix Corporation

-- Interface to library and kernel memory support

with System;
with V_I_Types;
package V_I_Alloc is

    pragma Suppress (All_Checks);
    pragma Suppress (Exception_Tables);
    pragma Not_Elaborated;
    pragma Local_Access;

------------------------------------------------------------------------------
-- The following routines are called directly by code generated by the VADS
-- compiler.  The aa_global_new routine is called to allocate for the NEW
-- allocator of Ada.  Likewise the aa_aligned new is called when a NEW
-- is done on a record with an alignment clause.  The aa_global_free
-- routine is called from unchecked_deallocation.  The aa_local_new routine
-- is called for the NEW allocators for any access type that is declared local
-- to a subprogram and is given a collection size; aa_local_free is called for
-- unchecked_deallocation of entities declared local to a subprogram.  See
-- VADS User manual for lheap meaning and exact usage.  extend_intr_heap
-- is called when a program needs to allocate more fixed size blocks for the
-- interrupt heap (not available in SLIM_MALLOC).  get_intr_heap_size is
-- called when a program wants to find out how many of the fixed sized blocks
-- remain.
------------------------------------------------------------------------------
    function Aa_Global_New (Size : in V_I_Types.Alloc_T) return System.Address;
    function Aa_Aligned_New
                (Size, Dope_Size : in V_I_Types.Alloc_T; Alignment : in Integer)
                return System.Address;
    procedure Aa_Global_Free (A : in System.Address);
    function Aa_Local_New (Size : in V_I_Types.Alloc_T; Lheap : System.Address)
                          return System.Address;
    procedure Aa_Local_Free (A : in System.Address; Lheap : System.Address);
    procedure Extend_Intr_Heap (Extension : in Integer);
    function Get_Intr_Heap_Size return Integer;

------------------------------------------------------------------------------
-- User interface to the kernel's memory allocation services.
--
-- Note: the compiler does NOT generate calls to these routines,
-- but instead calls AA_GLOBAL_NEW and AA_GLOBAL_FREE.  These calls
-- reach the kernel's user-accessible memory allocators, and are typically
-- used as a backstop to get more memory in large chunks.
--
-- Note: krn_aa_global_new returns system.no_addr if allocation
-- wasn't possible.  It doesn't raise a STORAGE_ERROR exception.
--
-- Provides backward compatibility with earlier releases of VADS.
--
-- The interface to ALL the low kernel services is now provided in
-- ada_krn_i.a.
------------------------------------------------------------------------------

    function Krn_Aa_Global_New (Size : V_I_Types.Alloc_T) return System.Address;
    pragma Inline_Only (Krn_Aa_Global_New);
    procedure Krn_Aa_Global_Free (A : System.Address);
    pragma Inline_Only (Krn_Aa_Global_Free);

    -- Extend the size of the current task's stack. Note, this may only
    -- be applicable to the main program's stack. If unable to extend stack,
    -- STORAGE_ERROR exception is raised.
    --
    -- Not supported. Always raises STORAGE_ERROR exception.
    procedure Extend_Stack;
    pragma Inline_Only (Extend_Stack);

private
    pragma Interface (Ada, Aa_Global_New);
    pragma Interface_Name (Aa_Global_New, "AA_GLOBAL_NEW");
    pragma Interface (Ada, Aa_Aligned_New);
    pragma Interface_Name (Aa_Aligned_New, "AA_ALIGNED_NEW");
    pragma Interface (Ada, Aa_Global_Free);
    pragma Interface_Name (Aa_Global_Free, "AA_GLOBAL_FREE");
    pragma Interface (Ada, Aa_Local_New);
    pragma Interface_Name (Aa_Local_New, "AA_LOCAL_NEW");
    pragma Interface (Ada, Aa_Local_Free);
    pragma Interface_Name (Aa_Local_Free, "AA_LOCAL_FREE");
    pragma Interface (Ada, Extend_Intr_Heap);
    pragma Interface_Name (Extend_Intr_Heap, "__EXTEND_INTR_HEAP");
    pragma Interface (Ada, Get_Intr_Heap_Size);
    pragma Interface_Name (Get_Intr_Heap_Size, "__GET_INTR_HEAP_SIZE");
end V_I_Alloc;
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Rational R1000/400

⟦6f516fde2⟧ Ada Source

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E3 Source Code

E3 Meta Data
