Merge gbichot3.local:/home/mysql_src/mysql-5.1-for-maria

into  gbichot3.local:/home/mysql_src/mysql-maria


BitKeeper/etc/ignore:
  auto-union
BUILD/SETUP.sh:
  Auto merged
client/mysqldump.c:
  Auto merged
config/ac-macros/plugins.m4:
  Auto merged
configure.in:
  Auto merged
include/Makefile.am:
  Auto merged
include/atomic/nolock.h:
  Auto merged
include/atomic/rwlock.h:
  Auto merged
include/atomic/x86-gcc.h:
  Auto merged
include/atomic/x86-msvc.h:
  Auto merged
include/ft_global.h:
  Auto merged
include/keycache.h:
  Auto merged
include/m_string.h:
  Auto merged
include/my_atomic.h:
  Auto merged
include/my_base.h:
  Auto merged
include/my_dbug.h:
  Auto merged
include/my_global.h:
  Auto merged
include/my_handler.h:
  Auto merged
include/my_sys.h:
  Auto merged
include/myisam.h:
  Auto merged
libmysql/CMakeLists.txt:
  Auto merged
libmysqld/Makefile.am:
  Auto merged
mysql-test/mysql-test-run.pl:
  Auto merged
mysql-test/r/events_logs_tests.result:
  Auto merged
mysql-test/t/events_logs_tests.test:
  Auto merged
mysys/Makefile.am:
  Auto merged
mysys/array.c:
  Auto merged
mysys/mf_keycache.c:
  Auto merged
mysys/mf_keycaches.c:
  Auto merged
mysys/my_atomic.c:
  Auto merged
mysys/my_bit.c:
  Auto merged
mysys/my_bitmap.c:
  Auto merged
mysys/my_create.c:
  Auto merged
mysys/my_delete.c:
  Auto merged
mysys/my_getsystime.c:
  Auto merged
mysys/my_handler.c:
  Auto merged
mysys/my_init.c:
  Auto merged
mysys/my_open.c:
  Auto merged
mysys/my_pread.c:
  Auto merged
mysys/my_rename.c:
  Auto merged
mysys/my_symlink.c:
  Auto merged
mysys/my_sync.c:
  Auto merged
plugin/daemon_example/daemon_example.cc:
  Auto merged
sql/Makefile.am:
  Auto merged
sql/filesort.cc:
  Auto merged
sql/gen_lex_hash.cc:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/handler.h:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/log.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/set_var.h:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_sort.h:
  Auto merged
sql/sql_test.cc:
  Auto merged
sql/uniques.cc:
  Auto merged
sql/unireg.cc:
  Auto merged
storage/Makefile.am:
  Auto merged
storage/csv/ha_tina.cc:
  Auto merged
storage/myisam/Makefile.am:
  Auto merged
storage/myisam/ft_boolean_search.c:
  Auto merged
storage/myisam/ft_nlq_search.c:
  Auto merged
storage/myisam/ft_parser.c:
  Auto merged
storage/myisam/ft_static.c:
  Auto merged
storage/myisam/ft_stopwords.c:
  Auto merged
storage/myisam/ft_update.c:
  Auto merged
storage/myisam/fulltext.h:
  Auto merged
storage/myisam/ha_myisam.h:
  Auto merged
storage/myisam/mi_check.c:
  Auto merged
storage/myisam/mi_create.c:
  Auto merged
storage/myisam/mi_delete.c:
  Auto merged
storage/myisam/mi_delete_all.c:
  Auto merged
storage/myisam/mi_dynrec.c:
  Auto merged
storage/myisam/mi_key.c:
  Auto merged
storage/myisam/mi_log.c:
  Auto merged
storage/myisam/mi_open.c:
  Auto merged
storage/myisam/mi_packrec.c:
  Auto merged
storage/myisam/mi_range.c:
  Auto merged
storage/myisam/mi_rsamepos.c:
  Auto merged
storage/myisam/mi_search.c:
  Auto merged
storage/myisam/mi_test1.c:
  Auto merged
storage/myisam/mi_test2.c:
  Auto merged
storage/myisam/mi_unique.c:
  Auto merged
storage/myisam/mi_update.c:
  Auto merged
storage/myisam/mi_write.c:
  Auto merged
storage/myisam/myisamchk.c:
  Auto merged
storage/myisam/myisamlog.c:
  Auto merged
storage/myisam/myisampack.c:
  Auto merged
storage/myisam/rt_index.c:
  Auto merged
storage/myisam/sort.c:
  Auto merged
storage/myisammrg/ha_myisammrg.h:
  Auto merged
unittest/mytap/tap.c:
  Auto merged
mysql-test/r/view.result:
  manual merge
mysql-test/t/view.test:
  manual merge
Makefile.am:
  manual merge
mysql-test/t/disabled.def:
  manual merge
sql/mysqld.cc:
  manual merge
sql/set_var.cc:
  manual merge
sql/udf_example.c:
  manual merge
storage/myisam/ha_myisam.cc:
  manual merge
storage/myisam/myisamdef.h:
  manual merge
storage/ndb/src/mgmapi/mgmapi.cpp:
  manual merge
unittest/Makefile.am:
  manual merge
unittest/mysys/Makefile.am:
  manual merge
unittest/mysys/my_atomic-t.c:
  manual merge

1 files changed, 145 insertions, 58 deletions

diff --git a/include/my_atomic.h b/include/my_atomic.h
index 7b066e9b529..5f328f32f3f 100644
--- a/include/my_atomic.h
+++ b/include/my_atomic.h
@@ -13,6 +13,40 @@
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
 
+/*
+  This header defines five atomic operations:
+
+  my_atomic_add#(&var, what)
+    add 'what' to *var, and return the old value of *var
+
+  my_atomic_fas#(&var, what)
+    'Fetch And Store'
+    store 'what' in *var, and return the old value of *var
+
+  my_atomic_cas#(&var, &old, new)
+    'Compare And Swap'
+    if *var is equal to *old, then store 'new' in *var, and return TRUE
+    otherwise store *var in *old, and return FALSE
+
+  my_atomic_load#(&var)
+    return *var
+
+  my_atomic_store#(&var, what)
+    store 'what' in *var
+
+  '#' is substituted by a size suffix - 8, 16, 32, or ptr
+  (e.g. my_atomic_add8, my_atomic_fas32, my_atomic_casptr).
+
+  NOTE This operations are not always atomic, so they always must be
+  enclosed in my_atomic_rwlock_rdlock(lock)/my_atomic_rwlock_rdunlock(lock)
+  or my_atomic_rwlock_wrlock(lock)/my_atomic_rwlock_wrunlock(lock).
+  Hint: if a code block makes intensive use of atomic ops, it make sense
+  to take/release rwlock once for the whole block, not for every statement.
+
+  On architectures where these operations are really atomic, rwlocks will
+  be optimized away.
+*/
+
 #ifndef my_atomic_rwlock_init
 
 #define intptr         void *
@@ -26,70 +60,115 @@
 #endif
 
 #ifndef make_atomic_add_body
-#define make_atomic_add_body(S)					\
+#define make_atomic_add_body(S)                                 \
   int ## S tmp=*a;                                              \
   while (!my_atomic_cas ## S(a, &tmp, tmp+v));                  \
   v=tmp;
 #endif
 
+#ifdef __GNUC__
+/*
+  we want to be able to use my_atomic_xxx functions with
+  both signed and unsigned integers. But gcc will issue a warning
+  "passing arg N of `my_atomic_XXX' as [un]signed due to prototype"
+  if the signedness of the argument doesn't match the prototype, or
+  "pointer targets in passing argument N of my_atomic_XXX differ in signedness"
+  if int* is used where uint* is expected (or vice versa).
+  Let's shut these warnings up
+*/
+#define make_transparent_unions(S)                              \
+        typedef union {                                         \
+          int  ## S  i;                                         \
+          uint ## S  u;                                         \
+        } U_ ## S   __attribute__ ((transparent_union));        \
+        typedef union {                                         \
+          int  ## S volatile *i;                                \
+          uint ## S volatile *u;                                \
+        } Uv_ ## S   __attribute__ ((transparent_union));
+#define uintptr intptr
+make_transparent_unions(8)
+make_transparent_unions(16)
+make_transparent_unions(32)
+make_transparent_unions(ptr)
+#undef uintptr
+#undef make_transparent_unions
+#define a       U_a.i
+#define cmp     U_cmp.i
+#define v       U_v.i
+#define set     U_set.i
+#else
+#define U_8    int8
+#define U_16   int16
+#define U_32   int32
+#define U_ptr  intptr
+#define Uv_8   int8
+#define Uv_16  int16
+#define Uv_32  int32
+#define Uv_ptr intptr
+#define U_a    volatile *a
+#define U_cmp  *cmp
+#define U_v    v
+#define U_set  set
+#endif /* __GCC__ transparent_union magic */
+
 #ifdef HAVE_INLINE
 
-#define make_atomic_add(S)					\
-static inline int ## S my_atomic_add ## S(			\
-                        int ## S volatile *a, int ## S v)	\
-{								\
-  make_atomic_add_body(S);					\
-  return v;							\
+#define make_atomic_add(S)                                      \
+STATIC_INLINE int ## S my_atomic_add ## S(                      \
+                        Uv_ ## S U_a, U_ ## S U_v)              \
+{                                                               \
+  make_atomic_add_body(S);                                      \
+  return v;                                                     \
 }
 
-#define make_atomic_swap(S)					\
-static inline int ## S my_atomic_swap ## S(			\
-                         int ## S volatile *a, int ## S v)	\
-{								\
-  make_atomic_swap_body(S);					\
-  return v;							\
+#define make_atomic_fas(S)                                      \
+STATIC_INLINE int ## S my_atomic_fas ## S(                      \
+                         Uv_ ## S U_a, U_ ## S U_v)             \
+{                                                               \
+  make_atomic_fas_body(S);                                      \
+  return v;                                                     \
 }
 
-#define make_atomic_cas(S)					\
-static inline int my_atomic_cas ## S(int ## S volatile *a,	\
-                            int ## S *cmp, int ## S set)	\
-{								\
-  int8 ret;							\
-  make_atomic_cas_body(S);					\
-  return ret;							\
+#define make_atomic_cas(S)                                      \
+STATIC_INLINE int my_atomic_cas ## S(Uv_ ## S U_a,              \
+                            Uv_ ## S U_cmp, U_ ## S U_set)      \
+{                                                               \
+  int8 ret;                                                     \
+  make_atomic_cas_body(S);                                      \
+  return ret;                                                   \
 }
 
-#define make_atomic_load(S)					\
-static inline int ## S my_atomic_load ## S(int ## S volatile *a) \
-{								\
-  int ## S ret;						\
-  make_atomic_load_body(S);					\
-  return ret;							\
+#define make_atomic_load(S)                                     \
+STATIC_INLINE int ## S my_atomic_load ## S(Uv_ ## S U_a)        \
+{                                                               \
+  int ## S ret;                                                 \
+  make_atomic_load_body(S);                                     \
+  return ret;                                                   \
 }
 
-#define make_atomic_store(S)					\
-static inline void my_atomic_store ## S(			\
-                     int ## S volatile *a, int ## S v)	\
-{								\
-  make_atomic_store_body(S);					\
+#define make_atomic_store(S)                                    \
+STATIC_INLINE void my_atomic_store ## S(                        \
+                     Uv_ ## S U_a, U_ ## S U_v)                 \
+{                                                               \
+  make_atomic_store_body(S);                                    \
 }
 
 #else /* no inline functions */
 
-#define make_atomic_add(S)					\
-extern int ## S my_atomic_add ## S(int ## S volatile *a, int ## S v);
+#define make_atomic_add(S)                                      \
+extern int ## S my_atomic_add ## S(Uv_ ## S, U_ ## S);
 
-#define make_atomic_swap(S)					\
-extern int ## S my_atomic_swap ## S(int ## S volatile *a, int ## S v);
+#define make_atomic_fas(S)                                      \
+extern int ## S my_atomic_fas ## S(Uv_ ## S, U_ ## S);
 
-#define make_atomic_cas(S)					\
-extern int my_atomic_cas ## S(int ## S volatile *a, int ## S *cmp, int ## S set);
+#define make_atomic_cas(S)                                      \
+extern int my_atomic_cas ## S(Uv_ ## S, Uv_ ## S, U_ ## S);
 
-#define make_atomic_load(S)					\
-extern int ## S my_atomic_load ## S(int ## S volatile *a);
+#define make_atomic_load(S)                                     \
+extern int ## S my_atomic_load ## S(Uv_ ## S);
 
-#define make_atomic_store(S)					\
-extern void my_atomic_store ## S(int ## S volatile *a, int ## S v);
+#define make_atomic_store(S)                                    \
+extern void my_atomic_store ## S(Uv_ ## S, U_ ## S);
 
 #endif
 
@@ -112,34 +191,42 @@ make_atomic_store(16)
 make_atomic_store(32)
 make_atomic_store(ptr)
 
-make_atomic_swap( 8)
-make_atomic_swap(16)
-make_atomic_swap(32)
-make_atomic_swap(ptr)
+make_atomic_fas( 8)
+make_atomic_fas(16)
+make_atomic_fas(32)
+make_atomic_fas(ptr)
 
+#ifdef _atomic_h_cleanup_
+#include _atomic_h_cleanup_
+#undef _atomic_h_cleanup_
+#endif
+
+#undef U_8
+#undef U_16
+#undef U_32
+#undef U_ptr
+#undef a
+#undef cmp
+#undef v
+#undef set
+#undef U_a
+#undef U_cmp
+#undef U_v
+#undef U_set
 #undef make_atomic_add
 #undef make_atomic_cas
 #undef make_atomic_load
 #undef make_atomic_store
-#undef make_atomic_swap
+#undef make_atomic_fas
 #undef make_atomic_add_body
 #undef make_atomic_cas_body
 #undef make_atomic_load_body
 #undef make_atomic_store_body
-#undef make_atomic_swap_body
+#undef make_atomic_fas_body
 #undef intptr
 
-#ifdef _atomic_h_cleanup_
-#include _atomic_h_cleanup_
-#undef _atomic_h_cleanup_
-#endif
-
-#if SIZEOF_CHARP == SIZEOF_INT
-typedef int intptr;
-#elif SIZEOF_CHARP == SIZEOF_LONG
-typedef long intptr;
-#else
-#error
+#ifndef LF_BACKOFF
+#define LF_BACKOFF (1)
 #endif
 
 #define MY_ATOMIC_OK       0