OpenE2K
/
glibc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

* sysdeps/i386/tls.h (THREAD_GSCOPE_RESET_FLAG): Use explicit 

insn suffix.
	(THREAD_GSCOPE_GET_FLAG): Remove.
	* sysdeps/x86_64/tls.h (THREAD_GSCOPE_GET_FLAG): Remove.
	* allocatestack.c (__wait_lookup_done): Revert 2007-05-24
	changes.
	* sysdeps/powerpc/tls.h (tcbhead_t): Remove gscope_flag.
	(THREAD_GSCOPE_GET_FLAG): Remove.
	(THREAD_GSCOPE_RESET_FLAG): Use THREAD_SELF->header.gscope_flag
	instead of THREAD_GSCOPE_GET_FLAG.
	(THREAD_GSCOPE_SET_FLAG): Likewise.  Add atomic_write_barrier after
	it.
	* sysdeps/s390/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
	THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
	THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
	THREAD_GSCOPE_WAIT): Define.
	* sysdeps/sparc/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
	THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
	THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
	THREAD_GSCOPE_WAIT): Define.
	* sysdeps/sh/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
	THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
	THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
	THREAD_GSCOPE_WAIT): Define.
	* sysdeps/ia64/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
	THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
	THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
	THREAD_GSCOPE_WAIT): Define.

2007-05-24  Richard Henderson  <rth@redhat.com>

	* descr.h (struct pthread): Add header.gscope_flag.
	* sysdeps/alpha/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
	THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
	THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
	THREAD_GSCOPE_WAIT): Define.
This commit is contained in:
Ulrich Drepper 2007-05-28 16:42:08 +00:00
parent cd0dbd8944
commit 991fa82be5
16 changed files with 207 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
nptl/ChangeLog
View File

@ -1,3 +1,42 @@
2007-05-28 Jakub Jelinek <jakub@redhat.com>
* sysdeps/i386/tls.h (THREAD_GSCOPE_RESET_FLAG): Use explicit
insn suffix.
(THREAD_GSCOPE_GET_FLAG): Remove.
* sysdeps/x86_64/tls.h (THREAD_GSCOPE_GET_FLAG): Remove.
* allocatestack.c (__wait_lookup_done): Revert 2007-05-24
changes.
* sysdeps/powerpc/tls.h (tcbhead_t): Remove gscope_flag.
(THREAD_GSCOPE_GET_FLAG): Remove.
(THREAD_GSCOPE_RESET_FLAG): Use THREAD_SELF->header.gscope_flag
instead of THREAD_GSCOPE_GET_FLAG.
(THREAD_GSCOPE_SET_FLAG): Likewise. Add atomic_write_barrier after
it.
* sysdeps/s390/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
* sysdeps/sparc/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
* sysdeps/sh/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
* sysdeps/ia64/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
2007-05-24 Richard Henderson <rth@redhat.com>
* descr.h (struct pthread): Add header.gscope_flag.
* sysdeps/alpha/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
2007-05-27 Ulrich Drepper <drepper@redhat.com>
* init.c: Make it compile with older kernel headers.

8
nptl/allocatestack.c
View File

@ -1021,10 +1021,10 @@ __wait_lookup_done (void)
list_for_each (runp, &stack_used)
{
struct pthread *t = list_entry (runp, struct pthread, list);
if (t == self || THREAD_GSCOPE_GET_FLAG (t) == THREAD_GSCOPE_FLAG_UNUSED)
if (t == self || t->header.gscope_flag == THREAD_GSCOPE_FLAG_UNUSED)
continue;
int *const gscope_flagp = &THREAD_GSCOPE_GET_FLAG (t);
int *const gscope_flagp = &t->header.gscope_flag;
/* We have to wait until this thread is done with the global
scope. First tell the thread that we are waiting and
@ -1043,10 +1043,10 @@ __wait_lookup_done (void)
list_for_each (runp, &__stack_user)
{
struct pthread *t = list_entry (runp, struct pthread, list);
if (t == self || THREAD_GSCOPE_GET_FLAG (t) == THREAD_GSCOPE_FLAG_UNUSED)
if (t == self || t->header.gscope_flag == THREAD_GSCOPE_FLAG_UNUSED)
continue;
int *const gscope_flagp = &THREAD_GSCOPE_GET_FLAG (t);
int *const gscope_flagp = &t->header.gscope_flag;
/* We have to wait until this thread is done with the global
scope. First tell the thread that we are waiting and

1
nptl/descr.h
View File

@ -132,6 +132,7 @@ struct pthread
struct
{
int multiple_threads;
int gscope_flag;
# ifndef __ASSUME_PRIVATE_FUTEX
int private_futex;
# endif

25
nptl/sysdeps/alpha/tls.h
View File

@ -1,5 +1,5 @@
/* Definition for thread-local data handling. NPTL/Alpha version.
Copyright (C) 2003, 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -121,6 +121,29 @@ typedef struct
#define THREAD_SETMEM_NC(descr, member, idx, value) \
descr->member[idx] = (value)
/* Get and set the global scope generation counter in struct pthread. */
#define THREAD_GSCOPE_FLAG_UNUSED 0
#define THREAD_GSCOPE_FLAG_USED 1
#define THREAD_GSCOPE_FLAG_WAIT 2
#define THREAD_GSCOPE_RESET_FLAG() \
do \
{ int __res \
= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
THREAD_GSCOPE_FLAG_UNUSED); \
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \
} \
while (0)
#define THREAD_GSCOPE_SET_FLAG() \
do \
{ \
THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
atomic_write_barrier (); \
} \
while (0)
#define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()
#endif /* __ASSEMBLER__ */
#endif /* tls.h */

3
nptl/sysdeps/i386/tls.h
View File

@ -444,7 +444,7 @@ union user_desc_init
#define THREAD_GSCOPE_RESET_FLAG() \
do \
{ int __res; \
asm volatile ("xchg %0, %%gs:%P1" \
asm volatile ("xchgl %0, %%gs:%P1" \
: "=r" (__res) \
: "i" (offsetof (struct pthread, header.gscope_flag)), \
"0" (THREAD_GSCOPE_FLAG_UNUSED)); \
@ -454,7 +454,6 @@ union user_desc_init
while (0)
#define THREAD_GSCOPE_SET_FLAG() \
THREAD_SETMEM (THREAD_SELF, header.gscope_flag, THREAD_GSCOPE_FLAG_USED)
#define THREAD_GSCOPE_GET_FLAG(descr) (descr)->header.gscope_flag
#define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()

25
nptl/sysdeps/ia64/tls.h
View File

@ -1,5 +1,5 @@
/* Definition for thread-local data handling. nptl/IA-64 version.
Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -163,6 +163,29 @@ register struct pthread *__thread_self __asm__("r13");
(((uintptr_t *) ((char *) (descr) + TLS_PRE_TCB_SIZE))[-2] \
= THREAD_GET_POINTER_GUARD ())
/* Get and set the global scope generation counter in struct pthread. */
#define THREAD_GSCOPE_FLAG_UNUSED 0
#define THREAD_GSCOPE_FLAG_USED 1
#define THREAD_GSCOPE_FLAG_WAIT 2
#define THREAD_GSCOPE_RESET_FLAG() \
do \
{ int __res \
= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
THREAD_GSCOPE_FLAG_UNUSED); \
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \
} \
while (0)
#define THREAD_GSCOPE_SET_FLAG() \
do \
{ \
THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
atomic_write_barrier (); \
} \
while (0)
#define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()
#endif /* __ASSEMBLER__ */
#endif /* tls.h */

21
nptl/sysdeps/powerpc/tls.h
View File

@ -63,11 +63,10 @@ typedef union dtv
# include <nptl/descr.h>
/* The stack_guard is accessed directly by GCC -fstack-protector code,
so it is a part of public ABI. The dtv, pointer_guard and gscope_flag
fields are private. */
so it is a part of public ABI. The dtv and pointer_guard fields
are private. */
typedef struct
{
int gscope_flag;
uintptr_t pointer_guard;
uintptr_t stack_guard;
dtv_t *dtv;
@ -181,24 +180,26 @@ register void *__thread_register __asm__ ("r13");
different value to mean unset l_tls_offset. */
# define NO_TLS_OFFSET -1
/* Get and set the global scope generation counter in the TCB head. */
/* Get and set the global scope generation counter in struct pthread. */
#define THREAD_GSCOPE_FLAG_UNUSED 0
#define THREAD_GSCOPE_FLAG_USED 1
#define THREAD_GSCOPE_FLAG_WAIT 2
#define THREAD_GSCOPE_GET_FLAG(descr) \
(((tcbhead_t *) ((char *) (descr) \
+ TLS_PRE_TCB_SIZE))[-1].gscope_flag)
#define THREAD_GSCOPE_RESET_FLAG() \
do \
{ int __res \
= atomic_exchange_rel (&THREAD_GSCOPE_GET_FLAG (THREAD_SELF), \
= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
THREAD_GSCOPE_FLAG_UNUSED); \
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
lll_futex_wake (&THREAD_GSCOPE_GET_FLAG (THREAD_SELF), 1); \
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \
} \
while (0)
#define THREAD_GSCOPE_SET_FLAG() \
(THREAD_GSCOPE_GET_FLAG (THREAD_SELF) = THREAD_GSCOPE_FLAG_USED)
do \
{ \
THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
atomic_write_barrier (); \
} \
while (0)
#define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()

30
nptl/sysdeps/s390/tls.h
View File

@ -1,5 +1,5 @@
/* Definition for thread-local data handling. NPTL/s390 version.
Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -27,6 +27,7 @@
# include <stdint.h>
# include <stdlib.h>
# include <list.h>
# include <kernel-features.h>
/* Type for the dtv. */
@ -50,6 +51,10 @@ typedef struct
int multiple_threads;
uintptr_t sysinfo;
uintptr_t stack_guard;
int gscope_flag;
#ifndef __ASSUME_PRIVATE_FUTEX
int private_futex;
#endif
} tcbhead_t;
# ifndef __s390x__
@ -168,6 +173,29 @@ typedef struct
#define THREAD_SET_POINTER_GUARD(value)
#define THREAD_COPY_POINTER_GUARD(descr)
/* Get and set the global scope generation counter in struct pthread. */
#define THREAD_GSCOPE_FLAG_UNUSED 0
#define THREAD_GSCOPE_FLAG_USED 1
#define THREAD_GSCOPE_FLAG_WAIT 2
#define THREAD_GSCOPE_RESET_FLAG() \
do \
{ int __res \
= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
THREAD_GSCOPE_FLAG_UNUSED); \
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \
} \
while (0)
#define THREAD_GSCOPE_SET_FLAG() \
do \
{ \
THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
atomic_write_barrier (); \
} \
while (0)
#define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()
#endif /* __ASSEMBLER__ */
#endif /* tls.h */

25
nptl/sysdeps/sh/tls.h
View File

@ -1,5 +1,5 @@
/* Definition for thread-local data handling. NPTL/SH version.
Copyright (C) 2003, 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -150,6 +150,29 @@ typedef struct
__asm __volatile ("stc gbr,%0" : "=r" (__tcbp)); \
((tcbhead_t *) (descr + 1))->pointer_guard = __tcbp->pointer_guard;})
/* Get and set the global scope generation counter in struct pthread. */
#define THREAD_GSCOPE_FLAG_UNUSED 0
#define THREAD_GSCOPE_FLAG_USED 1
#define THREAD_GSCOPE_FLAG_WAIT 2
#define THREAD_GSCOPE_RESET_FLAG() \
do \
{ int __res \
= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
THREAD_GSCOPE_FLAG_UNUSED); \
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \
} \
while (0)
#define THREAD_GSCOPE_SET_FLAG() \
do \
{ \
THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
atomic_write_barrier (); \
} \
while (0)
#define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()
#endif /* __ASSEMBLER__ */
#endif /* tls.h */

25
nptl/sysdeps/sparc/tls.h
View File

@ -1,5 +1,5 @@
/* Definitions for thread-local data handling. NPTL/sparc version.
Copyright (C) 2003, 2005, 2006 Free Software Foundation, Inc.
Copyright (C) 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -141,6 +141,29 @@ register struct pthread *__thread_self __asm__("%g7");
# define THREAD_COPY_POINTER_GUARD(descr) \
((descr)->header.pointer_guard = THREAD_GET_POINTER_GUARD ())
/* Get and set the global scope generation counter in struct pthread. */
#define THREAD_GSCOPE_FLAG_UNUSED 0
#define THREAD_GSCOPE_FLAG_USED 1
#define THREAD_GSCOPE_FLAG_WAIT 2
#define THREAD_GSCOPE_RESET_FLAG() \
do \
{ int __res \
= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
THREAD_GSCOPE_FLAG_UNUSED); \
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \
} \
while (0)
#define THREAD_GSCOPE_SET_FLAG() \
do \
{ \
THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
atomic_write_barrier (); \
} \
while (0)
#define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()
#endif /* !ASSEMBLER */
#endif /* tls.h */

14
nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S
View File

@ -61,7 +61,7 @@ __pthread_rwlock_rdlock:
jne 14f
cmpl $0, WRITERS_QUEUED(%ebx)
je 5f
cmpl $0, FLAGS(%ebx)
cmpb $0, FLAGS(%ebx)
je 5f
3: addl $1, READERS_QUEUED(%ebx)
@ -79,14 +79,12 @@ __pthread_rwlock_rdlock:
11:
#if __ASSUME_PRIVATE_FUTEX
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
xorl PSHARED(%ebx), %ecx
movzbl PSHARED(%ebx), %ecx
xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
#else
# if FUTEX_WAIT == 0
movl PSHARED(%ebx), %ecx
# else
movl $FUTEX_WAIT, %ecx
orl PSHARED(%ebx), %ecx
movzbl PSHARED(%ebx), %ecx
# if FUTEX_WAIT != 0
orl $FUTEX_WAIT, %ecx
# endif
xorl %gs:PRIVATE_FUTEX, %ecx
#endif

14
nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S
View File

@ -65,7 +65,7 @@ pthread_rwlock_timedrdlock:
jne 14f
cmpl $0, WRITERS_QUEUED(%ebp)
je 5f
cmpl $0, FLAGS(%ebp)
cmpb $0, FLAGS(%ebp)
je 5f
/* Check the value of the timeout parameter. */
@ -111,14 +111,12 @@ pthread_rwlock_timedrdlock:
movl %esi, %edx
#if __ASSUME_PRIVATE_FUTEX
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
xorl PSHARED(%ebp), %ecx
movzbl PSHARED(%ebp), %ecx
xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
#else
# if FUTEX_WAIT == 0
movl PSHARED(%ebp), %ecx
# else
movl $FUTEX_WAIT, %ecx
orl PSHARED(%ebp), %ecx
movzbl PSHARED(%ebp), %ecx
# if FUTEX_WAIT != 0
orl $FUTEX_WAIT, %ecx
# endif
xorl %gs:PRIVATE_FUTEX, %ecx
#endif

12
nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S
View File

@ -109,14 +109,12 @@ pthread_rwlock_timedwrlock:
movl %esi, %edx
#if __ASSUME_PRIVATE_FUTEX
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
xorl PSHARED(%ebp), %ecx
movzbl PSHARED(%ebp), %ecx
xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
#else
# if FUTEX_WAIT == 0
movl PSHARED(%ebp), %ecx
# else
movl $FUTEX_WAIT, %ecx
orl PSHARED(%ebp), %ecx
movzbl PSHARED(%ebp), %ecx
# if FUTEX_WAIT != 0
orl $FUTEX_WAIT, %ecx
# endif
xorl %gs:PRIVATE_FUTEX, %ecx
#endif

8
nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S
View File

@ -84,11 +84,11 @@ __pthread_rwlock_unlock:
8:
#if __ASSUME_PRIVATE_FUTEX
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAKE, %ecx
xorl PSHARED(%edi), %ecx
movzbl PSHARED(%edi), %ecx
xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAKE, %ecx
#else
movl $FUTEX_WAKE, %ecx
orl PSHARED(%edi), %ecx
movzbl PSHARED(%edi), %ecx
orl $FUTEX_WAKE, %ecx
xorl %gs:PRIVATE_FUTEX, %ecx
#endif
movl $SYS_futex, %eax

12
nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S
View File

@ -77,14 +77,12 @@ __pthread_rwlock_wrlock:
11:
#if __ASSUME_PRIVATE_FUTEX
movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
xorl PSHARED(%ebx), %ecx
movzbl PSHARED(%ebx), %ecx
xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx
#else
# if FUTEX_WAIT == 0
movl PSHARED(%ebx), %ecx
# else
movl $FUTEX_WAIT, %ecx
orl PSHARED(%ebx), %ecx
movzbl PSHARED(%ebx), %ecx
# if FUTEX_WAIT != 0
orl $FUTEX_WAIT, %ecx
# endif
xorl %gs:PRIVATE_FUTEX, %ecx
#endif

1
nptl/sysdeps/x86_64/tls.h
View File

@ -360,7 +360,6 @@ typedef struct
while (0)
#define THREAD_GSCOPE_SET_FLAG() \
THREAD_SETMEM (THREAD_SELF, header.gscope_flag, THREAD_GSCOPE_FLAG_USED)
#define THREAD_GSCOPE_GET_FLAG(descr) (descr)->header.gscope_flag
#define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()