dbug changes:

1. dbug state is now local to a thread
2. new macros: DBUG_EXPLAIN, DBUG_EXPLAIN_INITIAL,
   DBUG_SET, DBUG_SET_INITIAL, DBUG_EVALUATE, DBUG_EVALUATE_IF
3. macros are do{}while(0) wrapped
4. incremental modifications to the dbug state (e.g. "+d,info:-t")
5. dbug code cleanup, style fixes
6. _db_on_ and DEBUGGER_ON/OFF removed
7. rest of MySQL code fixed because of 3 (missing ;) and 6
8. dbug manual updated
9. server variable @@debug (global and local) to control dbug from SQL!
a. -#T to print timestamps in the log


BitKeeper/deleted/.del-readme.prof~2f3bae1550a0038d:
  Delete: dbug/readme.prof
client/mysqlslap.c:
  typo fixed
configure.in:
  test for sleep() too
dbug/dbug.c:
  thread local dbug settings
  DBUG_EXPLAIN,DBUG_EXPLAIN_INITIAL,DBUG_SET,DBUG_SET_INITIAL
  style changes to be more in line with MySQL code
  cleanup (many mallocs removed)
  incremental modification of dbug state (e.g. DBUG_PUSH("+t:-d,info"))
  DBUG_SET, _db_explain_
  -#T
dbug/monty.doc:
  obsolete and duplicate docs removed
dbug/user.r:
  new features documented
include/my_dbug.h:
  correct do{}while wrapping
  thread local dbug settings
  DBUG_EXPLAIN,DBUG_EXPLAIN_INITIAL,DBUG_SET,DBUG_SET_INITIAL
  DBUG_EVALUATE,DBUG_EVALUATE_IF
libmysql/libmysql.c:
  remove _db_on_ and DEBUGGER_ON/OFF
mysys/my_init.c:
  missed DBUG_RETURN
mysys/my_thr_init.c:
  bugfix - transaction id's are unsigned
mysys/testhash.c:
  remove _db_on_ and DEBUGGER_ON/OFF
sql/ha_myisammrg.cc:
  missed ;
sql/ha_ndbcluster.cc:
  remove _db_on_ and DEBUGGER_ON/OFF
  missed ;
sql/ha_ndbcluster_binlog.cc:
  remove _db_on_ and DEBUGGER_ON/OFF
  missed ;
sql/item_cmpfunc.cc:
  missed ;
sql/lock.cc:
  missed DBUG_RETURN
sql/log_event.cc:
  missed ;
sql/mysqld.cc:
  remove _db_on_ and DEBUGGER_ON/OFF
  missed ;
  DBUG_SET_INITIAL
sql/opt_range.cc:
  remove _db_on_ and DEBUGGER_ON/OFF
sql/set_var.cc:
  class sys_var_thd_dbug and "debug" server variable
sql/set_var.h:
  class sys_var_thd_dbug and "debug" server variable
sql/slave.cc:
  missed ;
sql/sql_cache.cc:
  missed ;
sql/sql_plugin.cc:
  missed ;
sql/sql_select.cc:
  remove _db_on_ and DEBUGGER_ON/OFF
storage/heap/hp_test2.c:
  remove _db_on_ and DEBUGGER_ON/OFF
storage/myisam/ft_eval.c:
  remove _db_on_ and DEBUGGER_ON/OFF
storage/myisam/ft_test1.c:
  remove _db_on_ and DEBUGGER_ON/OFF
storage/myisam/mi_open.c:
  remove _db_on_ and DEBUGGER_ON/OFF
  missed ;
storage/myisam/mi_test1.c:
  remove _db_on_ and DEBUGGER_ON/OFF
storage/myisam/mi_test2.c:
  remove _db_on_ and DEBUGGER_ON/OFF
storage/myisam/mi_test3.c:
  remove _db_on_ and DEBUGGER_ON/OFF
storage/ndb/src/ndbapi/DictCache.cpp:
  missed ;
storage/ndb/src/ndbapi/NdbTransaction.cpp:
  missed ;
tests/mysql_client_test.c:
  remove _db_on_ and DEBUGGER_ON/OFF

1 files changed, 20 insertions, 2 deletions

diff --git a/sql/set_var.h b/sql/set_var.h
index 34873947483..9b640517e64 100644
--- a/sql/set_var.h
+++ b/sql/set_var.h
@@ -45,7 +45,7 @@ public:
   struct my_option *option_limits;	/* Updated by by set_var_init() */
   uint name_length;			/* Updated by by set_var_init() */
   const char *name;
-  
+
   sys_after_update_func after_update;
   bool no_support_one_shot;
   sys_var(const char *name_arg)
@@ -413,7 +413,7 @@ class sys_var_thd_bit :public sys_var_thd
 public:
   ulong bit_flag;
   bool reverse;
-  sys_var_thd_bit(const char *name_arg, 
+  sys_var_thd_bit(const char *name_arg,
                   sys_check_func c_func, sys_update_func u_func,
                   ulong bit, bool reverse_arg=0)
     :sys_var_thd(name_arg), check_func(c_func), update_func(u_func),
@@ -427,6 +427,24 @@ public:
   byte *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base);
 };
 
+class sys_var_thd_dbug :public sys_var_thd
+{
+public:
+  sys_var_thd_dbug(const char *name_arg) :sys_var_thd(name_arg) {}
+  bool check_update_type(Item_result type) { return type != STRING_RESULT; }
+  bool check(THD *thd, set_var *var);
+  SHOW_TYPE type() { return SHOW_CHAR; }
+  bool update(THD *thd, set_var *var);
+  void set_default(THD *thd, enum_var_type type)
+  {
+    char buf[256];
+    DBUG_EXPLAIN_INITIAL(buf, sizeof(buf));
+    DBUG_SET(buf);
+  }
+  byte *value_ptr(THD *thd, enum_var_type type, LEX_STRING *b);
+};
+
+
 
 /* some variables that require special handling */