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+ added register keyword to Interlocked* definitions as suggested by Jonas, resolves #12255

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git-svn-id: trunk@12698 -
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florian 2009-02-07 16:09:05 +00:00
parent c4310a6f08
commit 0c65d53f45
3 changed files with 28 additions and 6 deletions
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1
.gitattributes vendored
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@ -8719,6 +8719,7 @@ tests/webtbs/tw12233.pp svneol=native#text/plain
tests/webtbs/tw12237.pp svneol=native#text/plain tests/webtbs/tw12237.pp svneol=native#text/plain
tests/webtbs/tw12242.pp svneol=native#text/plain tests/webtbs/tw12242.pp svneol=native#text/plain
tests/webtbs/tw12249.pp svneol=native#text/plain tests/webtbs/tw12249.pp svneol=native#text/plain
tests/webtbs/tw12255.pp svneol=native#text/plain
tests/webtbs/tw1228.pp svneol=native#text/plain tests/webtbs/tw1228.pp svneol=native#text/plain
tests/webtbs/tw1229.pp svneol=native#text/plain tests/webtbs/tw1229.pp svneol=native#text/plain
tests/webtbs/tw12318.pp svneol=native#text/plain tests/webtbs/tw12318.pp svneol=native#text/plain

10
rtl/win/wininc/redef.inc
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@ -1011,11 +1011,11 @@ function OpenWaitableTimer(dwDesiredAccess:DWORD;bInheritHandle:BOOL;lpTimerName
// windows because of Delphi compat. // windows because of Delphi compat.
{$calling default} {$calling default}
function InterLockedIncrement (var Target: longint) : longint; external name 'FPC_INTERLOCKEDINCREMENT'; function InterLockedIncrement (var Target: longint) : longint; register; external name 'FPC_INTERLOCKEDINCREMENT';
function InterLockedDecrement (var Target: longint) : longint; external name 'FPC_INTERLOCKEDDECREMENT'; function InterLockedDecrement (var Target: longint) : longint; register; external name 'FPC_INTERLOCKEDDECREMENT';
function InterLockedExchange (var Target: longint;Source : longint) : longint; external name 'FPC_INTERLOCKEDEXCHANGE'; function InterLockedExchange (var Target: longint;Source : longint) : longint; register; external name 'FPC_INTERLOCKEDEXCHANGE';
function InterLockedExchangeAdd (var Target: longint;Source : longint) : longint; external name 'FPC_INTERLOCKEDEXCHANGEADD'; function InterLockedExchangeAdd (var Target: longint;Source : longint) : longint; register; external name 'FPC_INTERLOCKEDEXCHANGEADD';
function InterlockedCompareExchange(var Target: longint; NewValue: longint; Comperand: longint): longint; external name 'FPC_INTERLOCKEDCOMPAREEXCHANGE'; function InterlockedCompareExchange(var Target: longint; NewValue: longint; Comperand: longint): longint; register; external name 'FPC_INTERLOCKEDCOMPAREEXCHANGE';
{$calling stdcall} {$calling stdcall}
{$endif read_interface} {$endif read_interface}

21
tests/webtbs/tw12255.pp Normal file
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@ -0,0 +1,21 @@
{ %target=win32 }
{$mode objfpc}
uses sysutils
, windows
;
var
SharedInt : PInteger;
target : integer;
savetarget : integer;
begin
target := 0;
savetarget := system.InterlockedCompareExchange(Target, 1, 0);
Writeln(format('%d = InterlockedCompareExchange(Target= %d , 1, 0)',[savetarget, target]));
SharedInt := AllocMem(SizeOf(Integer));
SharedInt^ := 0;
// here is runtime exception rised - access to invalid memory
savetarget := windows.InterlockedCompareExchange(SharedInt^, 1, 0);
Writeln(format('%d = InterlockedCompareExchange(SharedInt^= %d , 1, 0)',[savetarget, SharedInt^]));
FreeMem(SharedInt);
end.