fpc/rtl/inc/threadvr.inc
2002-10-31 13:45:21 +00:00

114 lines
2.9 KiB
PHP

{
$Id$
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by Michael Van Canneyt
member of the Free Pascal development team
Threadvar support, platform independent part
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
{*****************************************************************************
Threadvar support
*****************************************************************************}
{$ifdef HASTHREADVAR}
type
pltvInitEntry = ^ltvInitEntry;
ltvInitEntry = packed record
varaddr : pdword;
size : longint;
end;
TltvInitTablesTable = record
count : dword;
tables : array [1..32767] of pltvInitEntry;
end;
var
ThreadvarTablesTable : TltvInitTablesTable; external name 'FPC_THREADVARTABLES';
procedure init_unit_threadvars (tableEntry : pltvInitEntry);
begin
while tableEntry^.varaddr <> nil do
begin
SysInitThreadvar (tableEntry^.varaddr^, tableEntry^.size);
inc (pchar (tableEntry), sizeof (tableEntry^));
end;
end;
procedure init_all_unit_threadvars;
var
i : integer;
begin
{$ifdef DEBUG_MT}
WriteLn ('init_all_unit_threadvars (',ThreadvarTablesTable.count,') units');
{$endif}
for i := 1 to ThreadvarTablesTable.count do
init_unit_threadvars (ThreadvarTablesTable.tables[i]);
end;
procedure copy_unit_threadvars (tableEntry : pltvInitEntry);
var
oldp,
newp : pointer;
begin
while tableEntry^.varaddr <> nil do
begin
newp:=SysRelocateThreadVar(tableEntry^.varaddr^);
oldp:=pointer(pchar(tableEntry^.varaddr)+4);
move(oldp^,newp^,tableEntry^.size);
inc (pchar (tableEntry), sizeof (tableEntry^));
end;
end;
procedure copy_all_unit_threadvars;
var
i : integer;
begin
{$ifdef DEBUG_MT}
WriteLn ('copy_all_unit_threadvars (',ThreadvarTablesTable.count,') units');
{$endif}
for i := 1 to ThreadvarTablesTable.count do
copy_unit_threadvars (ThreadvarTablesTable.tables[i]);
end;
procedure InitThreadVars(RelocProc : Pointer);
begin
{ initialize threadvars }
init_all_unit_threadvars;
{ allocate mem for main thread threadvars }
SysAllocateThreadVars;
{ copy main thread threadvars }
copy_all_unit_threadvars;
{ install threadvar handler }
fpc_threadvar_relocate_proc:=RelocProc;
end;
{$endif HASTHREADVAR}
{
$Log$
Revision 1.1 2002-10-31 13:46:11 carl
* threadvar.inc -> threadvr.inc
Revision 1.2 2002/10/16 19:04:27 michael
+ More system-independent thread routines
Revision 1.1 2002/10/14 19:39:17 peter
* threads unit added for thread support
}