relay_log_space_limit

DBUG_ macro cleanup
buffer boundary cleanup
This changeset, although not fully tested, works for me better than 
anything I've had so far, including what is in the repository. I will 
push it unless something crashes while I am writing this :-)


mysql-test/r/rpl000014.result:
  updated result
mysql-test/r/rpl000015.result:
  updated result
mysql-test/r/rpl000016.result:
  updated result
mysql-test/r/rpl_log.result:
  new result
mysys/mf_iocache.c:
  DBUG_ cleanup
mysys/mf_iocache2.c:
  DBUG_ fix
sql/log.cc:
  added relay_log_space_limit
sql/mysqld.cc:
  relay_log_space_limit
sql/slave.cc:
  relay_log_space_limit
sql/slave.h:
  relay_log_space_limit
sql/sql_class.h:
  relay_log_space_limit
sql/sql_repl.cc:
  fixed buffer overrun bug

1 files changed, 17 insertions, 0 deletions

diff --git a/sql/sql_class.h b/sql/sql_class.h
index 289a2ab9255..d8824e80686 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -78,12 +78,29 @@ class MYSQL_LOG {
   bool need_start_event;
   pthread_cond_t update_cond;
   bool no_auto_events; // for relay binlog
+  ulonglong bytes_written;
   friend class Log_event;
 
 public:
   MYSQL_LOG();
   ~MYSQL_LOG();
   pthread_mutex_t* get_log_lock() { return &LOCK_log; }
+  void reset_bytes_written()
+    {
+      bytes_written = 0;
+    }
+  void harvest_bytes_written(ulonglong* counter)
+    {
+#ifndef DBUG_OFF
+      char buf1[22],buf2[22];
+#endif	
+      DBUG_ENTER("harvest_bytes_written");
+      (*counter)+=bytes_written;
+      DBUG_PRINT("info",("counter=%s,bytes_written=%s", llstr(*counter,buf1),
+		  llstr(bytes_written,buf2)));
+      bytes_written=0;
+      DBUG_VOID_RETURN;
+    }
   IO_CACHE* get_log_file() { return &log_file; }
   void signal_update() { pthread_cond_broadcast(&update_cond);}
   void wait_for_update(THD* thd);