* elf/dl-close.c (free_mem): Free _dl_scope_free_list.

2007-06-13  Jakub Jelinek  <jakub@redhat.com>

	* include/link.h: Don't include rtld-lowlevel.h.
	(struct link_map): Remove l_scope_lock.
	* sysdeps/generic/ldsodefs.h: Don't include rtld-lowlevel.h.
	(_dl_scope_free_list): New field (variable) in _rtld_global.
	(DL_LOOKUP_SCOPE_LOCK): Remove.
	(_dl_scope_free): New prototype.
	* elf/dl-runtime.c (_dl_fixup): Don't use __rtld_mrlock_*lock.
	Don't pass DL_LOOKUP_SCOPE_LOCK to _dl_lookup_symbol_x.
	(_dl_profile_fixup): Likewise.
	* elf/dl-sym.c (do_sym): Likewise.  Use wrapped _dl_lookup_symbol_x
	whenever !RTLD_SINGLE_THREAD_P, use THREAD_GSCOPE_SET_FLAG and
	THREAD_GSCOPE_RESET_FLAG around it.
	* elf/dl-close.c (_dl_close_worker): Don't use
	__rtld_mrlock_{change,done}.  Call _dl_scope_free on the old
	scope.  Make sure THREAD_GSCOPE_WAIT () happens if any old
	scopes were queued or if l_scope_mem has been abandoned.
	* elf/dl-open.c (_dl_scope_free): New function.
	(dl_open_worker): Use it.  Don't use __rtld_mrlock_{change,done}.
	* elf/dl-support.c (_dl_scope_free_list): New variable.
	* elf/dl-lookup.c (add_dependency): Remove flags argument.
	Remove DL_LOOKUP_SCOPE_LOCK handling.
	(_dl_lookup_symbol_x): Adjust caller.  Remove DL_LOOKUP_SCOPE_LOCK
	handling.
	* elf/dl-object.c (_dl_new_object): Don't use
	__rtld_mrlock_initialize.

2007-06-19  Ulrich Drepper  <drepper@redhat.com>

2 files changed, 5 insertions, 109 deletions

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 87028ca..12ba85c 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,8 @@
+2007-06-19  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/unix/sysv/linux/rtld-lowlevel.h: Remove mrlock
+	implementation.
+
 2007-06-18  Ulrich Drepper  <drepper@redhat.com>
 
 	* pthreadP.h: Define PTHREAD_MUTEX_TYPE.
diff --git a/nptl/sysdeps/unix/sysv/linux/rtld-lowlevel.h b/nptl/sysdeps/unix/sysv/linux/rtld-lowlevel.h
index e805b63..1aeff8f 100644
--- a/nptl/sysdeps/unix/sysv/linux/rtld-lowlevel.h
+++ b/nptl/sysdeps/unix/sysv/linux/rtld-lowlevel.h
@@ -24,115 +24,6 @@
 #include <lowlevellock.h>
 
 
-/* Special multi-reader lock used in ld.so.  */
-#define __RTLD_MRLOCK_WRITER 1
-#define __RTLD_MRLOCK_RWAIT 2
-#define __RTLD_MRLOCK_WWAIT 4
-#define __RTLD_MRLOCK_RBITS \
-  ~(__RTLD_MRLOCK_WRITER | __RTLD_MRLOCK_RWAIT | __RTLD_MRLOCK_WWAIT)
-#define __RTLD_MRLOCK_INC 8
-#define __RTLD_MRLOCK_TRIES 5
-
-
-typedef int __rtld_mrlock_t;
-
-
-#define __rtld_mrlock_define(CLASS,NAME) \
-  CLASS __rtld_mrlock_t NAME;
-
-
-#define _RTLD_MRLOCK_INITIALIZER 0
-#define __rtld_mrlock_initialize(NAME) \
-  (void) ((NAME) = 0)
-
-
-#define __rtld_mrlock_lock(lock) \
-  do {									      \
-    __label__ out;							      \
-    while (1)								      \
-      {									      \
-	int oldval;							      \
-	for (int tries = 0; tries < __RTLD_MRLOCK_TRIES; ++tries)	      \
-	  {								      \
-	    oldval = lock;						      \
-	    while (__builtin_expect ((oldval				      \
-				      & (__RTLD_MRLOCK_WRITER		      \
-					 | __RTLD_MRLOCK_WWAIT))	      \
-				     == 0, 1))				      \
-	      {								      \
-		int newval = ((oldval & __RTLD_MRLOCK_RBITS)		      \
-			      + __RTLD_MRLOCK_INC);			      \
-		int ret = atomic_compare_and_exchange_val_acq (&(lock),	      \
-							       newval,	      \
-							       oldval);	      \
-		if (__builtin_expect (ret == oldval, 1))		      \
-		  goto out;						      \
-		oldval = ret;						      \
-	      }								      \
-	    atomic_delay ();						      \
-	  }								      \
-	if ((oldval & __RTLD_MRLOCK_RWAIT) == 0)			      \
-	  {								      \
-	    atomic_or (&(lock), __RTLD_MRLOCK_RWAIT);			      \
-	    oldval |= __RTLD_MRLOCK_RWAIT;				      \
-	  }								      \
-	lll_private_futex_wait (lock, oldval);				      \
-      }									      \
-  out:;									      \
-  } while (0)
-
-
-#define __rtld_mrlock_unlock(lock) \
-  do {									      \
-    int oldval = atomic_exchange_and_add (&(lock), -__RTLD_MRLOCK_INC);	      \
-    if (__builtin_expect ((oldval					      \
-			   & (__RTLD_MRLOCK_RBITS | __RTLD_MRLOCK_WWAIT))     \
-			  == (__RTLD_MRLOCK_INC | __RTLD_MRLOCK_WWAIT), 0))   \
-      /* We have to wake all threads since there might be some queued	      \
-	 readers already.  */						      \
-      lll_private_futex_wake (&(lock), 0x7fffffff);			      \
-  } while (0)
-
-
-/* There can only ever be one thread trying to get the exclusive lock.  */
-#define __rtld_mrlock_change(lock) \
-  do {									      \
-    __label__ out;							      \
-    while (1)								      \
-      {									      \
-	int oldval;							      \
-	for (int tries = 0; tries < __RTLD_MRLOCK_TRIES; ++tries)	      \
-	  {								      \
-	    oldval = lock;						      \
-	    while (__builtin_expect ((oldval & __RTLD_MRLOCK_RBITS) == 0, 1)) \
-	      {								      \
-		int newval = ((oldval & __RTLD_MRLOCK_RWAIT)		      \
-			      + __RTLD_MRLOCK_WRITER);			      \
-		int ret = atomic_compare_and_exchange_val_acq (&(lock),	      \
-							       newval,	      \
-							       oldval);	      \
-		if (__builtin_expect (ret == oldval, 1))		      \
-		  goto out;						      \
-		oldval = ret;						      \
-	      }								      \
-	    atomic_delay ();						      \
-	  }								      \
-	atomic_or (&(lock), __RTLD_MRLOCK_WWAIT);			      \
-	oldval |= __RTLD_MRLOCK_WWAIT;					      \
-	lll_private_futex_wait (lock, oldval);				      \
-      }									      \
-  out:;									      \
-  } while (0)
-
-
-#define __rtld_mrlock_done(lock) \
-  do {				 \
-    int oldval = atomic_exchange_and_add (&(lock), -__RTLD_MRLOCK_WRITER);    \
-    if (__builtin_expect ((oldval & __RTLD_MRLOCK_RWAIT) != 0, 0))	      \
-      lll_private_futex_wake (&(lock), 0x7fffffff);			      \
-  } while (0)
-
-
 /* Function to wait for variable become zero.  Used in ld.so for
    reference counters.  */
 #define __rtld_waitzero(word) \