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authorUlrich Drepper <drepper@redhat.com>2007-06-20 03:19:13 +0000
committerUlrich Drepper <drepper@redhat.com>2007-06-20 03:19:13 +0000
commite4eb675d0caf19581b69fd41e9fa29ecc7f22d23 (patch)
tree9e9ffe1d6e2c3a6f9f5dd93838e99cc29fbe81a3 /nptl
parent9be09e060fcb211d3e53fc93098f57b74df2cb67 (diff)
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* 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>
Diffstat (limited to 'nptl')
-rw-r--r--nptl/ChangeLog5
-rw-r--r--nptl/sysdeps/unix/sysv/linux/rtld-lowlevel.h109
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) \