Hi,
glibc 2.3.current CVS is throwing a huge stone in our direction,
it no longer allows overload of __errno_location.
To visualize this problem I have added this testcase.
I will try to find a way to make our errno handling work again :/
linux only.
Ciao, Marcus
Changelog:
Added testcase for multithread safe errno.
Index: dlls/kernel/tests/Makefile.in
===================================================================
RCS file: /home/wine/wine/dlls/kernel/tests/Makefile.in,v
retrieving revision 1.6
diff -u -r1.6 Makefile.in
--- dlls/kernel/tests/Makefile.in 4 Oct 2002 17:42:27 -0000 1.6
+++ dlls/kernel/tests/Makefile.in 22 Jan 2003 09:34:15 -0000
@@ -12,6 +12,7 @@
directory.c \
drive.c \
environ.c \
+ errno.c \
file.c \
format_msg.c \
generated.c \
/*
* Errno testing.
*
* Copyright 2003 Marcus Meissner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <wine/test.h>
#include <windef.h>
#include <winbase.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
/*
* This test is just to check that errno is thread safe.
* We cannot use config.h, so *BSD and other platforms will want
* to add other ifdefs.
*/
#if defined(linux)
#include <sched.h>
void WINAPI errnotest1(void *x) {
struct stat stbuf;
int cnt = 100;
while (cnt--) {
if (-1!=lstat("/not/existant/file",&stbuf))
return;
sched_yield(); /* will not change errno */
if (errno != ENOENT) {
ok(errno==ENOENT,"errno did not stay at ENOENT for non existing file, changed to %d\n", errno);
return;
}
}
ok(1==1,"Errno stayed the same over the whole run.\n");
}
void WINAPI errnotest2(void *x) {
int cnt = 100;
close(333);
while (cnt--) {
close(333);
sched_yield(); /* will not change errno */
if (errno != EBADF) {
ok(errno==EBADF,"errno did not stay at EBADF for close of bad fd, changed to %d\n", errno);
return;
}
}
ok(1==1,"Errno stayed the same over the whole run.\n");
}
START_TEST(errno)
{
DWORD threadId;
HANDLE ht[2];
ht[0]=CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)errnotest1,NULL,0,&threadId);
ht[1]=CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)errnotest2,NULL,0,&threadId);
WaitForMultipleObjects(2,ht,TRUE,INFINITE);
}
#else
START_TEST(errno)
{
/* nothing */
}
#endif
