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138 | ------------------------------------------------------------------------------
-- --
-- Matreshka Project --
-- --
-- Web Framework --
-- --
-- Runtime Library Component --
-- --
------------------------------------------------------------------------------
-- --
-- Copyright © 2015-2016, Vadim Godunko <vgodunko@gmail.com> --
-- All rights reserved. --
-- --
-- Redistribution and use in source and binary forms, with or without --
-- modification, are permitted provided that the following conditions --
-- are met: --
-- --
-- * Redistributions of source code must retain the above copyright --
-- notice, this list of conditions and the following disclaimer. --
-- --
-- * Redistributions in binary form must reproduce the above copyright --
-- notice, this list of conditions and the following disclaimer in the --
-- documentation and/or other materials provided with the distribution. --
-- --
-- * Neither the name of the Vadim Godunko, IE nor the names of its --
-- contributors may be used to endorse or promote products derived from --
-- this software without specific prior written permission. --
-- --
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS --
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT --
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR --
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT --
-- HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, --
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED --
-- TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR --
-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF --
-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING --
-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS --
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --
-- --
------------------------------------------------------------------------------
-- $Revision: 5606 $ $Date: 2016-09-01 22:46:45 +0300 (Чт, 01 сен 2016) $
------------------------------------------------------------------------------
with Interfaces.C.Strings;
with System.Address_To_Access_Conversions;
with Servlet.Container_Initializers;
separate (Matreshka.Servlet_Containers)
package body Loader is
package Conversions is
new System.Address_To_Access_Conversions
(Servlet.Container_Initializers.Servlet_Container_Initializer'Class);
use type Interfaces.C.Strings.chars_ptr;
use type System.Address;
use type
Servlet.Container_Initializers.Servlet_Container_Initializer_Access;
----------
-- Load --
----------
procedure Load
(Container : in out Servlet_Container'Class;
Initializer : out
Servlet.Container_Initializers.Servlet_Container_Initializer_Access)
is
RTLD_LAZY : constant Interfaces.C.int := 16#0_0001#;
RTLD_NOW : constant Interfaces.C.int := 16#0_0002#;
RTLD_GLOBAL : constant Interfaces.C.int := 16#0_0100#;
RTLD_LOCAL : constant Interfaces.C.int := 16#0_0000#;
type LD_Handle is new System.Address;
Null_LD_Handle : constant LD_Handle := LD_Handle (System.Null_Address);
function dlopen
(file : Interfaces.C.Strings.chars_ptr;
mode : Interfaces.C.int) return LD_Handle
with Import => True,
Convention => C,
External_Name => "dlopen";
function dlsym
(handle : LD_Handle;
name : Interfaces.C.Strings.chars_ptr) return System.Address
with Import => True,
Convention => C,
External_Name => "dlsym";
function dlerror return Interfaces.C.Strings.chars_ptr
with Import => True,
Convention => C,
External_name => "dlerror";
N : Interfaces.C.Strings.chars_ptr
:= Interfaces.C.Strings.New_String
("install/WEB-INF/lib/x86_64-linux/lib"
& Container.Descriptor.Library_Name.To_UTF_8_String
& ".so");
M : Interfaces.C.Strings.chars_ptr
:= Interfaces.C.Strings.New_String ("spikedog_container_initializer");
E : Interfaces.C.Strings.chars_ptr;
P : LD_Handle;
S : System.Address;
begin
P := dlopen (N, RTLD_NOW);
Interfaces.C.Strings.Free (N);
if P = Null_LD_Handle then
raise Program_Error;
end if;
E := dlerror;
S := dlsym (P, M);
Interfaces.C.Strings.Free (M);
E := dlerror;
if E /= Interfaces.C.Strings.Null_Ptr then
raise Program_Error;
end if;
declare
Aux :
Servlet.Container_Initializers.Servlet_Container_Initializer_Access
with Import => True,
Convention => Ada,
Address => S;
begin
Initializer := Aux;
end;
end Load;
end Loader;
|