From: Mauritz Sundell
Date: March 7 2012 11:51am
Subject: bzr push into mysql-5.1-telco-7.0 branch (mauritz.sundell:4870 to 4871)
List-Archive: http://lists.mysql.com/commits/143120
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 4871 Mauritz Sundell	2012-03-07
      ndb - fix of signal log serialization
      
      Previously, setting NDB_SIGNAL_LOG_MUTEX can be used to serialize writes
      to signal log, that protects against interleaving several signal
      descriptions with each other.  But flush request was not serialized,
      leading to potential loss or repetition of parts of signal descriptions.
      
      Now, both flushes and writes are serialized when NDB_SIGNAL_LOG_MUTEX
      are set.

    modified:
      storage/ndb/src/common/debugger/SignalLoggerManager.cpp
 4870 magnus.blaudd@stripped	2012-03-05
      ndb
       - remove dependency on function from mysys/sha1.h since they no longer exist
         in the future. Instead use our "standard" md5 function to create
         a human readable digest which pgman may print to the
         log file in debug compile.
       - remove two unecessary include of md5_hash.hpp  

    modified:
      storage/ndb/src/kernel/blocks/pgman.cpp
      storage/ndb/src/ndbapi/NdbOperationSearch.cpp
      storage/ndb/src/ndbapi/ndb_cluster_connection.cpp
=== modified file 'storage/ndb/src/common/debugger/SignalLoggerManager.cpp'
--- a/storage/ndb/src/common/debugger/SignalLoggerManager.cpp	2012-01-16 07:14:30 +0000
+++ b/storage/ndb/src/common/debugger/SignalLoggerManager.cpp	2012-03-07 11:50:14 +0000
@@ -67,8 +67,11 @@ SignalLoggerManager::~SignalLoggerManage
 FILE *
 SignalLoggerManager::setOutputStream(FILE * output)
 {
-  if(outputStream != 0){
+  if (outputStream != 0)
+  {
+    lock();
     fflush(outputStream);
+    unlock();
   }
 
   FILE * out = outputStream;
@@ -85,8 +88,12 @@ SignalLoggerManager::getOutputStream() c
 void
 SignalLoggerManager::flushSignalLog()
 {
-  if(outputStream != 0)
+  if (outputStream != 0)
+  {
+    lock();
     fflush(outputStream);
+    unlock();
+  }
 }
 
 void

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