Use generic pthread support on hppa.

8 files changed, 20 insertions, 382 deletions

diff --git a/sysdeps/nptl/bits/thread-shared-types.h b/sysdeps/nptl/bits/thread-shared-types.h
index d95ac9ac13..1e45f2d8ce 100644
--- a/sysdeps/nptl/bits/thread-shared-types.h
+++ b/sysdeps/nptl/bits/thread-shared-types.h
@@ -118,7 +118,7 @@ struct __pthread_mutex_s
   {
     __PTHREAD_SPINS_DATA;
     __pthread_slist_t __list;
-  }
+  };
 #endif
   __PTHREAD_COMPAT_PADDING_END;
 };
diff --git a/sysdeps/unix/sysv/linux/hppa/internaltypes.h b/sysdeps/unix/sysv/linux/hppa/internaltypes.h
deleted file mode 100644
index d6496579da..0000000000
--- a/sysdeps/unix/sysv/linux/hppa/internaltypes.h
+++ /dev/null
@@ -1,84 +0,0 @@
-#include_next <internaltypes.h>
-#ifndef _INTERNAL_TYPES_H_HPPA_
-#define _INTERNAL_TYPES_H_HPPA_ 1
-#include <atomic.h>
-
-/* In GLIBC 2.10 HPPA switched from Linuxthreads to NPTL, and in order
-to maintain ABI compatibility with pthread_cond_t, some care had to be
-taken.
-
-The NPTL pthread_cond_t grew in size. When HPPA switched to NPTL, we
-dropped the use of ldcw, and switched to the kernel helper routine for
-compare-and-swap.  This allowed HPPA to use the 4-word 16-byte aligned
-lock words, and alignment words to store the additional pthread_cond_t
-data. Once organized properly the new NPTL pthread_cond_t was 1 word
-smaller than the Linuxthreads version.
-
-However, we were faced with the case that users may have initialized the
-pthread_cond_t with PTHREAD_COND_INITIALIZER. In this case, the first
-four words were set to one, and must be cleared before any NPTL code
-used these words.
-
-We didn't want to use LDCW, because it continues to be a source of bugs
-when applications memset pthread_cond_t to all zeroes by accident. This
-works on all other architectures where lock words are unlocked at zero.
-Remember that because of the semantics of LDCW, a locked word is set to
-zero, and an unlocked word is set to 1.
-
-Instead we used atomic_compare_and_exchange_val_acq, but we couldn't use
-this on any of the pthread_cond_t words, otherwise it might interfere
-with the current operation of the structure. To solve this problem we
-used the left over word.
-
-If the stucture was initialized by a legacy Linuxthread
-PTHREAD_COND_INITIALIZER it contained a 1, and this indicates that the
-structure requires zeroing for NPTL. The first thread to come upon a
-pthread_cond_t with a 1 in the __initializer field, will
-compare-and-swap the value, placing a 2 there which will cause all other
-threads using the same pthread_cond_t to wait for the completion of the
-initialization. Lastly, we use a store (with memory barrier) to change
-__initializer from 2 to 0. Note that the store is strongly ordered, but
-we use the PA 1.1 compatible form which is ",ma" with zero offset.
-
-In the future, when the application is recompiled with NPTL
-PTHREAD_COND_INITIALIZER it will be a quick compare-and-swap, which
-fails because __initializer is zero, and the structure will be used as
-is correctly.  */
-
-#define cond_compat_clear(var) \
-({									\
-  int tmp = 0;								\
-  var->__data.__wseq = 0;						\
-  var->__data.__signals_sent = 0;					\
-  var->__data.__confirmed = 0;						\
-  var->__data.__generation = 0;						\
-  var->__data.__mutex = NULL;						\
-  var->__data.__quiescence_waiters = 0;					\
-  var->__data.__clockid = 0;						\
-  /* Clear __initializer last, to indicate initialization is done.  */	\
-  /* This synchronizes-with the acquire load below.  */			\
-  atomic_store_release (&var->__data.__initializer, 0);			\
-})
-
-#define cond_compat_check_and_clear(var) \
-({								\
-  int v;							\
-  int *value = &var->__data.__initializer;			\
-  /* This synchronizes-with the release store above.  */	\
-  while ((v = atomic_load_acquire (value)) != 0)		\
-    {								\
-      if (v == 1						\
-	  /* Relaxed MO is fine; it only matters who's first.  */        \
-	  && atomic_compare_exchange_acquire_weak_relaxed (value, 1, 2)) \
-	{							\
-	  /* We're first; initialize structure.  */		\
-	  cond_compat_clear (var);				\
-	  break;						\
-	}							\
-      else							\
-	/* Yield before we re-check initialization status.  */	\
-	sched_yield ();						\
-    }								\
-})
-
-#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/pthread.h b/sysdeps/unix/sysv/linux/hppa/pthread.h
index ac617201d2..d1973741cd 100644
--- a/sysdeps/unix/sysv/linux/hppa/pthread.h
+++ b/sysdeps/unix/sysv/linux/hppa/pthread.h
@@ -26,6 +26,7 @@
 #include <bits/pthreadtypes.h>
 #include <bits/setjmp.h>
 #include <bits/wordsize.h>
+#include <bits/types/struct_timespec.h>
 
 
 /* Detach state.  */
@@ -82,32 +83,18 @@ enum
 #endif
 
 
-#ifdef __PTHREAD_MUTEX_HAVE_PREV
-# define PTHREAD_MUTEX_INITIALIZER \
-  { { 0, 0, 0, 0, 0, __PTHREAD_SPINS, { 0, 0 } } }
-# ifdef __USE_GNU
-#  define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
-#  define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __PTHREAD_SPINS, { 0, 0 } } }
-#  define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
-#  define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
-
-# endif
-#else
-# define PTHREAD_MUTEX_INITIALIZER \
-  { { 0, 0, 0, 0, 0, { __PTHREAD_SPINS } } }
-# ifdef __USE_GNU
-#  define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { __PTHREAD_SPINS } } }
-#  define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { __PTHREAD_SPINS } } }
-#  define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { __PTHREAD_SPINS } } }
-
-# endif
+#define PTHREAD_MUTEX_INITIALIZER \
+  { { 0, 0, 0, 0, { 0, 0, 0, 0 }, 0, { __PTHREAD_SPINS }, { 0, 0 } } }
+#ifdef __USE_GNU
+# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, { 0, 0, 0, 0 }, 0, \
+      { __PTHREAD_SPINS }, { 0, 0 } } }
+# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, { 0, 0, 0, 0 }, 0, \
+      { __PTHREAD_SPINS }, { 0, 0 } } }
+# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
+  { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, { 0, 0, 0, 0 }, 0, \
+      { __PTHREAD_SPINS }, { 0, 0 } } }
 #endif
 
 
@@ -130,25 +117,14 @@ enum
 # endif
 #endif
 
+
 /* Read-write lock initializers.  */
 # define PTHREAD_RWLOCK_INITIALIZER \
-  { { 0, 0, 0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, 0 } }
+  { { { 0, 0, 0, 0 }, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }
 # ifdef __USE_GNU
-#  ifdef __PTHREAD_RWLOCK_INT_FLAGS_SHARED
-#   define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
-  { { 0, 0, 0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0,					      \
-	PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP } }
-#  else
-#   if __BYTE_ORDER == __LITTLE_ENDIAN
-#    define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
-  { { 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, \
-      0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, 0 } }
-#   else
-#    define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
-  { { 0, 0, 0, 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,\
-      0 } }
-#   endif
-#  endif
+#  define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
+   { { { 0, 0, 0, 0 }, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
+       PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, 0, 0, 0 } }
 # endif
 #endif  /* Unix98 or XOpen2K */
 
@@ -183,9 +159,8 @@ enum
 };
 
 
-
 /* Conditional variable handling.  */
-#define PTHREAD_COND_INITIALIZER { { 0, 0, 0, 0, 0, (void *) 0, 0, 0 } }
+#define PTHREAD_COND_INITIALIZER { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }
 
 
 /* Cleanup buffers */
@@ -1161,43 +1136,3 @@ __NTH (pthread_equal (pthread_t __thread1, pthread_t __thread2))
 __END_DECLS
 
 #endif	/* pthread.h */
-
-#ifndef _PTHREAD_H_HPPA_
-#define _PTHREAD_H_HPPA_ 1
-
-/* The pthread_cond_t initializer is compatible only with NPTL. We do not
-   want to be forwards compatible, we eventually want to drop the code
-   that has to clear the old LT initializer.  */
-#undef PTHREAD_COND_INITIALIZER
-#define PTHREAD_COND_INITIALIZER { { 0, 0, 0, (void *) 0, 0, 0, 0, 0, 0 } }
-
-/* The pthread_mutex_t and pthread_rwlock_t initializers are compatible
-   only with NPTL. NPTL assumes pthread_rwlock_t is all zero.  */
-#undef PTHREAD_MUTEX_INITIALIZER
-#undef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
-#undef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
-#undef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
-/* Mutex initializers.  */
-#define PTHREAD_MUTEX_INITIALIZER \
-  { { 0, 0, 0, 0, { 0, 0, 0, 0 }, 0, { 0 }, 0, 0 } }
-#ifdef __USE_GNU
-# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, { 0, 0, 0, 0 }, 0, { 0 }, 0, 0 } }
-# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, { 0, 0, 0, 0 }, 0, { 0 }, 0, 0 } }
-# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
-  { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, { 0, 0, 0, 0 }, 0, { 0 }, 0, 0 } }
-#endif
-
-#undef PTHREAD_RWLOCK_INITIALIZER
-#undef PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP
-/* Read-write lock initializers.  */
-#define PTHREAD_RWLOCK_INITIALIZER \
-  { { { 0, 0, 0, 0 }, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }
-#ifdef __USE_GNU
-# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
-  { { { 0, 0, 0, 0 }, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,\
-      0, 0, 0 } }
-#endif  /* Unix98 or XOpen2K */
-
-#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/pthread_cond_broadcast.c b/sysdeps/unix/sysv/linux/hppa/pthread_cond_broadcast.c
deleted file mode 100644
index a6f9f5d433..0000000000
--- a/sysdeps/unix/sysv/linux/hppa/pthread_cond_broadcast.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Copyright (C) 2009-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Carlos O'Donell <carlos@codesourcery.com>, 2009.
-
-   The GNU C 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.
-
-   The GNU C 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 the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef INCLUDED_SELF
-# define INCLUDED_SELF
-# include <pthread_cond_broadcast.c>
-#else
-# include <pthread.h>
-# include <pthreadP.h>
-# include <internaltypes.h>
-# include <shlib-compat.h>
-int
-__pthread_cond_broadcast (pthread_cond_t *cond)
-{
-  cond_compat_check_and_clear (cond);
-  return __pthread_cond_broadcast_internal (cond);
-}
-versioned_symbol (libpthread, __pthread_cond_broadcast, pthread_cond_broadcast,
-                  GLIBC_2_3_2);
-# undef versioned_symbol
-# define versioned_symbol(lib, local, symbol, version)
-# undef __pthread_cond_broadcast
-# define __pthread_cond_broadcast __pthread_cond_broadcast_internal
-# include_next <pthread_cond_broadcast.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/pthread_cond_destroy.c b/sysdeps/unix/sysv/linux/hppa/pthread_cond_destroy.c
deleted file mode 100644
index 49af087bb4..0000000000
--- a/sysdeps/unix/sysv/linux/hppa/pthread_cond_destroy.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Copyright (C) 2009-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Carlos O'Donell <carlos@codesourcery.com>, 2009.
-
-   The GNU C 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.
-
-   The GNU C 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 the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef INCLUDED_SELF
-# define INCLUDED_SELF
-# include <pthread_cond_destroy.c>
-#else
-# include <pthread.h>
-# include <pthreadP.h>
-# include <internaltypes.h>
-# include <shlib-compat.h>
-int
-__pthread_cond_destroy (pthread_cond_t *cond)
-{
-  cond_compat_check_and_clear (cond);
-  return __pthread_cond_destroy_internal (cond);
-}
-versioned_symbol (libpthread, __pthread_cond_destroy, pthread_cond_destroy,
-                  GLIBC_2_3_2);
-# undef versioned_symbol
-# define versioned_symbol(lib, local, symbol, version)
-# undef __pthread_cond_destroy
-# define __pthread_cond_destroy __pthread_cond_destroy_internal
-# include_next <pthread_cond_destroy.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/pthread_cond_init.c b/sysdeps/unix/sysv/linux/hppa/pthread_cond_init.c
deleted file mode 100644
index ccb3de07ff..0000000000
--- a/sysdeps/unix/sysv/linux/hppa/pthread_cond_init.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Copyright (C) 2009-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Carlos O'Donell <carlos@codesourcery.com>, 2009.
-
-   The GNU C 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.
-
-   The GNU C 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 the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef INCLUDED_SELF
-# define INCLUDED_SELF
-# include <pthread_cond_init.c>
-#else
-# include <pthread.h>
-# include <pthreadP.h>
-# include <internaltypes.h>
-# include <shlib-compat.h>
-int
-__pthread_cond_init (pthread_cond_t *cond, const pthread_condattr_t *cond_attr)
-{
-  cond_compat_clear (cond);
-  return __pthread_cond_init_internal (cond, cond_attr);
-}
-versioned_symbol (libpthread, __pthread_cond_init, pthread_cond_init,
-                  GLIBC_2_3_2);
-# undef versioned_symbol
-# define versioned_symbol(lib, local, symbol, version)
-# undef __pthread_cond_init
-# define __pthread_cond_init __pthread_cond_init_internal
-# include_next <pthread_cond_init.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/pthread_cond_signal.c b/sysdeps/unix/sysv/linux/hppa/pthread_cond_signal.c
deleted file mode 100644
index 2bf32af933..0000000000
--- a/sysdeps/unix/sysv/linux/hppa/pthread_cond_signal.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Copyright (C) 2009-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Carlos O'Donell <carlos@codesourcery.com>, 2009.
-
-   The GNU C 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.
-
-   The GNU C 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 the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef INCLUDED_SELF
-# define INCLUDED_SELF
-# include <pthread_cond_signal.c>
-#else
-# include <pthread.h>
-# include <pthreadP.h>
-# include <internaltypes.h>
-# include <shlib-compat.h>
-int
-__pthread_cond_signal (pthread_cond_t *cond)
-{
-  cond_compat_check_and_clear (cond);
-  return __pthread_cond_signal_internal (cond);
-}
-versioned_symbol (libpthread, __pthread_cond_signal, pthread_cond_signal,
-                  GLIBC_2_3_2);
-# undef versioned_symbol
-# define versioned_symbol(lib, local, symbol, version)
-# undef __pthread_cond_signal
-# define __pthread_cond_signal __pthread_cond_signal_internal
-# include_next <pthread_cond_signal.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c b/sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
deleted file mode 100644
index 1cc2fc15d4..0000000000
--- a/sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
+++ /dev/null
@@ -1,53 +0,0 @@
-/* Copyright (C) 2009-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Carlos O'Donell <carlos@codesourcery.com>, 2009.
-
-   The GNU C 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.
-
-   The GNU C 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 the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef INCLUDED_SELF
-# define INCLUDED_SELF
-# include <pthread_cond_wait.c>
-#else
-# include <pthread.h>
-# include <pthreadP.h>
-# include <internaltypes.h>
-# include <shlib-compat.h>
-int
-__pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex)
-{
-  cond_compat_check_and_clear (cond);
-  return __pthread_cond_wait_internal (cond, mutex);
-}
-versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait,
-                  GLIBC_2_3_2);
-int
-__pthread_cond_timedwait (cond, mutex, abstime)
-     pthread_cond_t *cond;
-     pthread_mutex_t *mutex;
-     const struct timespec *abstime;
-{
-  cond_compat_check_and_clear (cond);
-  return __pthread_cond_timedwait_internal (cond, mutex, abstime);
-}
-versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait,
-                  GLIBC_2_3_2);
-# undef versioned_symbol
-# define versioned_symbol(lib, local, symbol, version)
-# undef __pthread_cond_wait
-# define __pthread_cond_wait __pthread_cond_wait_internal
-# undef __pthread_cond_timedwait
-# define __pthread_cond_timedwait __pthread_cond_timedwait_internal
-# include_next <pthread_cond_wait.c>
-#endif