* sysdeps/powerpc/tls.h (tcbhead_t): Add gscope_flag.

(THREAD_GSCOPE_FLAG_UNUSED, THREAD_GSCOPE_FLAG_USED,
	THREAD_GSCOPE_FLAG_WAIT): Define.
	(THREAD_GSCOPE_GET_FLAG, THREAD_GSCOPE_SET_FLAG,
	THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define.
	* sysdeps/i386/tls.h (THREAD_GSCOPE_WAIT): Don't use
	PTR_DEMANGLE.
	(THREAD_GSCOPE_GET_FLAG): Define.
	* sysdeps/x86_64/tls.h (THREAD_GSCOPE_GET_FLAG): Define.
	* allocatestack.c (__wait_lookup_done): Use THREAD_GSCOPE_GET_FLAG
	instead of ->header.gscope_flag directly.

io/bits/fcntl2.h

@@ -34,13 +34,13 @@ extern int __REDIRECT (__open_2, (__const char *__file, int __oflag),
   ({ int ___r;								      \
      /* If the compiler complains about an invalid type, excess elements, etc \
 	in the initialization this means a paraleter of the wrong type has    \
-	been passed to open. */					      \
+	been passed to open. */						      \
      int ___arr[] = { __VA_ARGS__ };					      \
-     if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0)	      \
+     if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0)	      \
        {								      \
 	 /* If the compile complains about the size of this array type the    \
 	    the mode parameter is missing since O_CREAT has been used.  */    \
-	 typedef int __open_missing_mode[(flags & O_CREAT) != 0		      \
+	 typedef int __open_missing_mode[((flags) & O_CREAT) != 0	      \
 					 ? ((long int) sizeof (___arr)	      \
 					    - (long int) sizeof (int)) : 1];  \
        }								      \
@@ -66,11 +66,11 @@ extern int __open64_2 (__const char *__path, int __oflag);
 	in the initialization this means a paraleter of the wrong type has    \
 	been passed to open64. */					      \
      int ___arr[] = { __VA_ARGS__ };					      \
-     if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0)	      \
+     if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0)	      \
        {								      \
 	 /* If the compile complains about the size of this array type the    \
 	    the mode parameter is missing since O_CREAT has been used.  */    \
-	 typedef int __open_missing_mode[(flags & O_CREAT) != 0		      \
+	 typedef int __open_missing_mode[((flags) & O_CREAT) != 0	      \
 					 ? ((long int) sizeof (___arr)	      \
 					    - (long int) sizeof (int)) : 1];  \
        }								      \
@@ -102,11 +102,11 @@ extern int __REDIRECT (__openat_2, (int __fd, __const char *__file,
 	in the initialization this means a paraleter of the wrong type has    \
 	been passed to openat. */					      \
      int ___arr[] = { __VA_ARGS__ };					      \
-     if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0)	      \
+     if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0)	      \
        {								      \
 	 /* If the compile complains about the size of this array type the    \
 	    the mode parameter is missing since O_CREAT has been used.  */    \
-	 typedef int __open_missing_mode[(flags & O_CREAT) != 0		      \
+	 typedef int __open_missing_mode[((flags) & O_CREAT) != 0	      \
 					 ? ((long int) sizeof (___arr)	      \
 					    - (long int) sizeof (int)) : 1];  \
        }								      \
@@ -132,11 +132,11 @@ extern int __openat64_2 (int __fd, __const char *__path, int __oflag);
 	in the initialization this means a paraleter of the wrong type has    \
 	been passed to openat64. */					      \
      int ___arr[] = { __VA_ARGS__ };					      \
-     if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0)	      \
+     if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0)	      \
        {								      \
 	 /* If the compile complains about the size of this array type the    \
 	    the mode parameter is missing since O_CREAT has been used.  */    \
-	 typedef int __open_missing_mode[(flags & O_CREAT) != 0		      \
+	 typedef int __open_missing_mode[((flags) & O_CREAT) != 0	      \
 					 ? ((long int) sizeof (___arr)	      \
 					    - (long int) sizeof (int)) : 1];  \
        }								      \

nptl/ChangeLog

@@ -1,3 +1,17 @@
+2007-05-24  Jakub Jelinek  <jakub@redhat.com>
+
+	* sysdeps/powerpc/tls.h (tcbhead_t): Add gscope_flag.
+	(THREAD_GSCOPE_FLAG_UNUSED, THREAD_GSCOPE_FLAG_USED,
+	THREAD_GSCOPE_FLAG_WAIT): Define.
+	(THREAD_GSCOPE_GET_FLAG, THREAD_GSCOPE_SET_FLAG,
+	THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define.
+	* sysdeps/i386/tls.h (THREAD_GSCOPE_WAIT): Don't use
+	PTR_DEMANGLE.
+	(THREAD_GSCOPE_GET_FLAG): Define.
+	* sysdeps/x86_64/tls.h (THREAD_GSCOPE_GET_FLAG): Define.
+	* allocatestack.c (__wait_lookup_done): Use THREAD_GSCOPE_GET_FLAG
+	instead of ->header.gscope_flag directly.
+
 2007-05-23  Ulrich Drepper  <drepper@redhat.com>
 
 	* init.c (__pthread_initialize_minimal_internal): Check whether

nptl/allocatestack.c

@@ -1023,10 +1023,10 @@ __wait_lookup_done (void)
   list_for_each (runp, &stack_used)
     {
       struct pthread *t = list_entry (runp, struct pthread, list);
-      if (t == self || t->header.gscope_flag == THREAD_GSCOPE_FLAG_UNUSED)
+      if (t == self || THREAD_GSCOPE_GET_FLAG (t) == THREAD_GSCOPE_FLAG_UNUSED)
 	continue;
 
-      int *const gscope_flagp = &t->header.gscope_flag;
+      int *const gscope_flagp = &THREAD_GSCOPE_GET_FLAG (t);
 
       /* We have to wait until this thread is done with the global
 	 scope.  First tell the thread that we are waiting and
@@ -1045,10 +1045,10 @@ __wait_lookup_done (void)
   list_for_each (runp, &__stack_user)
     {
       struct pthread *t = list_entry (runp, struct pthread, list);
-      if (t == self || t->header.gscope_flag == THREAD_GSCOPE_FLAG_UNUSED)
+      if (t == self || THREAD_GSCOPE_GET_FLAG (t) == THREAD_GSCOPE_FLAG_UNUSED)
 	continue;
 
-      int *const gscope_flagp = &t->header.gscope_flag;
+      int *const gscope_flagp = &THREAD_GSCOPE_GET_FLAG (t);
 
       /* We have to wait until this thread is done with the global
 	 scope.  First tell the thread that we are waiting and

nptl/sysdeps/i386/tls.h

@@ -454,16 +454,9 @@ union user_desc_init
   while (0)
 #define THREAD_GSCOPE_SET_FLAG() \
   THREAD_SETMEM (THREAD_SELF, header.gscope_flag, THREAD_GSCOPE_FLAG_USED)
-#ifdef PTR_DEMANGLE
+#define THREAD_GSCOPE_GET_FLAG(descr) (descr)->header.gscope_flag
-# define THREAD_GSCOPE_WAIT() \
+#define THREAD_GSCOPE_WAIT() \
-  do { void (*ptr) (void) = GL(dl_wait_lookup_done);			      \
-       PTR_DEMANGLE (ptr);						      \
-       ptr ();								      \
-  } while (0)
-#else
-# define THREAD_GSCOPE_WAIT() \
   GL(dl_wait_lookup_done) ()
-#endif
 
 
 #endif /* __ASSEMBLER__ */

nptl/sysdeps/powerpc/tls.h

@@ -1,5 +1,5 @@
 /* Definition for thread-local data handling.  NPTL/PowerPC 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
@@ -63,10 +63,11 @@ 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 and pointer_guard fields
+   so it is a part of public ABI.  The dtv, pointer_guard and gscope_flag
-   are private.  */
+   fields are private.  */
 typedef struct
 {
+  int gscope_flag;
   uintptr_t pointer_guard;
   uintptr_t stack_guard;
   dtv_t *dtv;
@@ -180,6 +181,27 @@ 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.  */
+#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),	     \
+			       THREAD_GSCOPE_FLAG_UNUSED);		     \
+      if (__res == THREAD_GSCOPE_FLAG_WAIT)				     \
+	lll_futex_wake (&THREAD_GSCOPE_GET_FLAG (THREAD_SELF), 1);	     \
+    }									     \
+  while (0)
+#define THREAD_GSCOPE_SET_FLAG() \
+  (THREAD_GSCOPE_GET_FLAG (THREAD_SELF) = THREAD_GSCOPE_FLAG_USED)
+#define THREAD_GSCOPE_WAIT() \
+  GL(dl_wait_lookup_done) ()
+
 #endif /* __ASSEMBLER__ */
 
 #endif	/* tls.h */

nptl/sysdeps/x86_64/tls.h

@@ -360,6 +360,7 @@ 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) ()
 

sysdeps/unix/sysv/linux/open64.c

@@ -63,6 +63,15 @@ __open64_2 (file, oflag)
   if (oflag & O_CREAT)
     __fortify_fail ("invalid open64 call: O_CREAT without mode");
 
-  return __open64 (file, oflag);
+  if (SINGLE_THREAD_P)
+    return INLINE_SYSCALL (open, 2, file, oflag | O_LARGEFILE);
+
+  int oldtype = LIBC_CANCEL_ASYNC ();
+
+  int result = INLINE_SYSCALL (open, 2, file, oflag | O_LARGEFILE);
+
+  LIBC_CANCEL_RESET (oldtype);
+
+  return result;
 }
 #endif