hcl/bin/storage.adb
2021-08-21 14:31:39 +00:00

67 lines
2.9 KiB
Ada

with System;
--with System.Address_Image;
with Ada.Text_IO;
package body Storage is
type Size_T is mod 2 ** System.Word_Size;
function Sys_Malloc (Size: Size_T) return System.Address;
--pragma Import (C, Sys_Malloc, Link_Name => "malloc");
pragma Import (Convention => C, Entity => Sys_Malloc, External_Name => "malloc");
procedure Sys_Free (Ptr: System.Address);
--pragma Import (C, Sys_Free, Link_Name => "free");
pragma Import (Convention => C, Entity => Sys_Free, External_Name => "free");
procedure Allocate (Pool: in out Global_Pool; Address : out System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count) is
tmp: System.Address;
use type SSE.Storage_Count;
begin
Ada.Text_IO.Put_Line ("QSE.Global_Pool Allocating " & SSE.Storage_Count'Image (Size) & " " & SSE.Storage_Count'Image (((Size + Alignment - 1) / Alignment) * Alignment));
tmp := Sys_Malloc (Size_T(((Size + Alignment - 1) / Alignment) * Alignment));
if System."=" (tmp, System.Null_Address) then
raise Storage_Error;
else
Address := tmp;
--Ada.Text_IO.Put_Line ("QSE.Global_Pool Returning " & System.Address_Image (Address));
end if;
end Allocate;
procedure Deallocate (Pool: in out Global_Pool; Address : in System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count) is
begin
Ada.Text_IO.Put_Line ("QSE.Global_Pool Deallocating ");
--Ada.Text_IO.Put_Line ("QSE.Global_Pool Deallocating " & System.Address_Image (Address));
Sys_Free (Address);
end Deallocate;
function Storage_Size (Pool: in Global_Pool) return SSE.Storage_Count is
begin
Ada.Text_IO.Put_Line ("QSE.Global_Pool Storage_Size ");
return SSE.Storage_Count'Last;
end Storage_Size;
-- TODO: find a better solution
-- gnat 3.15p somehow looks for the rountines below when H2.Pool is used.
-- let me put these routines here temporarily until i find a proper solution.
procedure Allocate_315P (Pool: in out SSP.Root_Storage_Pool'Class; Address : out System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count);
pragma Export (Ada, Allocate_315P, "system__storage_pools__allocate");
procedure Allocate_315P (Pool: in out SSP.Root_Storage_Pool'Class; Address : out System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count) is
begin
ada.text_io.put_line ("system__storage_pools__allocate...");
SSP.Allocate (Pool, Address, Size, Alignment);
end Allocate_315P;
procedure Deallocate_315P (Pool: in out SSP.Root_Storage_Pool'Class; Address : in System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count);
pragma Export (Ada, Deallocate_315P, "system__storage_pools__deallocate");
procedure Deallocate_315P (Pool: in out SSP.Root_Storage_Pool'Class; Address : in System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count) is
begin
ada.text_io.put_line ("system__storage_pools__deallocate...");
SSP.Deallocate (Pool, Address, Size, Alignment);
end Deallocate_315P;
end Storage;