mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-10-31 17:51:38 +01:00
105 lines
2.7 KiB
PHP
105 lines
2.7 KiB
PHP
{
|
|
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
|
|
*****************************************************************************}
|
|
|
|
|
|
type
|
|
pltvInitEntry = ^ltvInitEntry;
|
|
ltvInitEntry = packed record
|
|
varaddr : pdword;
|
|
size : longint;
|
|
end;
|
|
|
|
TltvInitTablesTable = packed record
|
|
count : dword;
|
|
tables : packed 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
|
|
CurrentTM.InitThreadvar (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:=CurrentTM.RelocateThreadVar(tableEntry^.varaddr^);
|
|
oldp:=pointer(pchar(tableEntry^.varaddr)+sizeof(pointer));
|
|
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 }
|
|
CurrentTM.AllocateThreadVars;
|
|
{ copy main thread threadvars }
|
|
copy_all_unit_threadvars;
|
|
{ install threadvar handler }
|
|
fpc_threadvar_relocate_proc:=RelocProc;
|
|
{$ifdef FPC_HAS_FEATURE_HEAP}
|
|
{$ifndef HAS_MEMORYMANAGER}
|
|
RelocateHeap;
|
|
{$endif HAS_MEMORYMANAGER}
|
|
{$endif}
|
|
end;
|
|
|
|
|