mass sync with glibc nptl

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

1 files changed, 35 insertions, 19 deletions

diff --git a/libpthread/nptl/sysdeps/pthread/bits/libc-lock.h b/libpthread/nptl/sysdeps/pthread/bits/libc-lock.h
index c59e3a0cc..70fe6762f 100644
--- a/libpthread/nptl/sysdeps/pthread/bits/libc-lock.h
+++ b/libpthread/nptl/sysdeps/pthread/bits/libc-lock.h
@@ -1,5 +1,5 @@
 /* libc-internal interface for mutex locks.  NPTL version.
-   Copyright (C) 1996-2001, 2002, 2003, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1996-2003, 2005, 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
@@ -150,13 +150,17 @@ typedef pthread_key_t __libc_key_t;
 
 /* Call thread functions through the function pointer table.  */
 #if defined SHARED && !defined NOT_IN_libc
-# define PTF(NAME) __libc_pthread_functions.ptr_##NAME
+# define PTFAVAIL(NAME) __libc_pthread_functions_init
 # define __libc_ptf_call(FUNC, ARGS, ELSE) \
-  (PTF(FUNC) != NULL ? PTF(FUNC) ARGS : ELSE)
+  (__libc_pthread_functions_init ? PTHFCT_CALL (ptr_##FUNC, ARGS) : ELSE)
+# define __libc_ptf_call_always(FUNC, ARGS) \
+  PTHFCT_CALL (ptr_##FUNC, ARGS)
 #else
-# define PTF(NAME) NAME
+# define PTFAVAIL(NAME) (NAME != NULL)
 # define __libc_ptf_call(FUNC, ARGS, ELSE) \
   __libc_maybe_call (FUNC, ARGS, ELSE)
+# define __libc_ptf_call_always(FUNC, ARGS) \
+  FUNC ARGS
 #endif
 
 
@@ -168,8 +172,15 @@ typedef pthread_key_t __libc_key_t;
 # define __libc_lock_init(NAME) \
   __libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0)
 #endif
-#define __libc_rwlock_init(NAME) \
+#if defined SHARED && !defined NOT_IN_libc
+/* ((NAME) = (__libc_rwlock_t) PTHREAD_RWLOCK_INITIALIZER, 0) is
+   inefficient.  */
+# define __libc_rwlock_init(NAME) \
+  (__builtin_memset (&(NAME), '\0', sizeof (NAME)), 0)
+#else
+# define __libc_rwlock_init(NAME) \
   __libc_maybe_call (__pthread_rwlock_init, (&(NAME), NULL), 0)
+#endif
 
 /* Same as last but this time we initialize a recursive mutex.  */
 #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
@@ -210,8 +221,12 @@ typedef pthread_key_t __libc_key_t;
 # define __libc_lock_fini(NAME) \
   __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0)
 #endif
-#define __libc_rwlock_fini(NAME) \
+#if defined SHARED && !defined NOT_IN_libc
+# define __libc_rwlock_fini(NAME) ((void) 0)
+#else
+# define __libc_rwlock_fini(NAME) \
   __libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0)
+#endif
 
 /* Finalize recursive named lock.  */
 #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
@@ -224,7 +239,7 @@ typedef pthread_key_t __libc_key_t;
 /* Lock the named lock variable.  */
 #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
 # define __libc_lock_lock(NAME) \
-  ({ lll_lock (NAME); 0; })
+  ({ lll_lock (NAME, LLL_PRIVATE); 0; })
 #else
 # define __libc_lock_lock(NAME) \
   __libc_maybe_call (__pthread_mutex_lock, (&(NAME)), 0)
@@ -241,7 +256,7 @@ typedef pthread_key_t __libc_key_t;
     void *self = THREAD_SELF;						      \
     if ((NAME).owner != self)						      \
       {									      \
-	lll_lock ((NAME).lock);						      \
+	lll_lock ((NAME).lock, LLL_PRIVATE);				      \
 	(NAME).owner = self;						      \
       }									      \
     ++(NAME).cnt;							      \
@@ -295,7 +310,7 @@ typedef pthread_key_t __libc_key_t;
 /* Unlock the named lock variable.  */
 #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
 # define __libc_lock_unlock(NAME) \
-  lll_unlock (NAME)
+  lll_unlock (NAME, LLL_PRIVATE)
 #else
 # define __libc_lock_unlock(NAME) \
   __libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0)
@@ -311,7 +326,7 @@ typedef pthread_key_t __libc_key_t;
     if (--(NAME).cnt == 0)						      \
       {									      \
 	(NAME).owner = NULL;						      \
-	lll_unlock ((NAME).lock);					      \
+	lll_unlock ((NAME).lock, LLL_PRIVATE);				      \
       }									      \
   } while (0)
 #else
@@ -353,8 +368,9 @@ typedef pthread_key_t __libc_key_t;
 /* Call handler iff the first call.  */
 #define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
   do {									      \
-    if (PTF(__pthread_once) != NULL)					      \
-      PTF(__pthread_once) (&(ONCE_CONTROL), INIT_FUNCTION);		      \
+    if (PTFAVAIL (__pthread_once))					      \
+      __libc_ptf_call_always (__pthread_once, (&(ONCE_CONTROL),		      \
+					       INIT_FUNCTION));		      \
     else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) {			      \
       INIT_FUNCTION ();							      \
       (ONCE_CONTROL) |= 2;						      \
@@ -380,9 +396,10 @@ extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer
   { struct _pthread_cleanup_buffer _buffer;				      \
     int _avail;								      \
     if (DOIT) {								      \
-      _avail = PTF(_pthread_cleanup_push_defer) != NULL;		      \
+      _avail = PTFAVAIL (_pthread_cleanup_push_defer);			      \
       if (_avail) {							      \
-	PTF(_pthread_cleanup_push_defer) (&_buffer, FCT, ARG);		      \
+	__libc_ptf_call_always (_pthread_cleanup_push_defer, (&_buffer, FCT,  \
+							      ARG));	      \
       } else {								      \
 	_buffer.__routine = (FCT);					      \
 	_buffer.__arg = (ARG);						      \
@@ -394,7 +411,7 @@ extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer
 /* End critical region with cleanup.  */
 #define __libc_cleanup_region_end(DOIT) \
     if (_avail) {							      \
-      PTF(_pthread_cleanup_pop_restore) (&_buffer, DOIT);		      \
+      __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\
     } else if (DOIT)							      \
       _buffer.__routine (_buffer.__arg);				      \
   }
@@ -402,16 +419,13 @@ extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer
 /* Sometimes we have to exit the block in the middle.  */
 #define __libc_cleanup_end(DOIT) \
     if (_avail) {							      \
-      PTF(_pthread_cleanup_pop_restore) (&_buffer, DOIT);		      \
+      __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\
     } else if (DOIT)							      \
       _buffer.__routine (_buffer.__arg)
 
 
 /* Normal cleanup handling, based on C cleanup attribute.  */
 __extern_inline void
-__libc_cleanup_routine (struct __pthread_cleanup_frame *f);
-
-__extern_inline void
 __libc_cleanup_routine (struct __pthread_cleanup_frame *f)
 {
   if (f->__do_it)
@@ -531,6 +545,7 @@ weak_extern (__pthread_key_create)
 weak_extern (__pthread_setspecific)
 weak_extern (__pthread_getspecific)
 weak_extern (__pthread_once)
+weak_extern (__pthread_initialize)
 weak_extern (__pthread_atfork)
 #ifdef SHARED
 weak_extern (_pthread_cleanup_push_defer)
@@ -556,6 +571,7 @@ weak_extern (pthread_setcancelstate)
 #  pragma weak __pthread_setspecific
 #  pragma weak __pthread_getspecific
 #  pragma weak __pthread_once
+#  pragma weak __pthread_initialize
 #  pragma weak __pthread_atfork
 #  pragma weak _pthread_cleanup_push_defer
 #  pragma weak _pthread_cleanup_pop_restore