bzr commit into mysql-6.0-falcon-team branch (olav:3032) Bug#43048

[Olav Sandstaa]

#At file:///home/os136802/mysql/develop/repo/falcon-bug40633-linux3/ based on revid:vvaintroub@stripped

 3032 Olav Sandstaa	2009-02-23
      Bug #43048 Falcon may crash during shutdown when running it embedded
      
      Calling shutdown() directly on a Thread object is not thread safe. If the
      thread we want to shutdown wake's up during the call to shutdown() it might
      shutdown and delete the thread object before the call to shutdown() has 
      completed. This might result in shutdown() accessing free and overwritten
      memory.
      
      Instead of calling shutdown() directly, use the thread barn's
      shutdown() method which has the neccessary locking for concurrent
      threads.
modified:
  storage/falcon/Cache.cpp

per-file messages:
  storage/falcon/Cache.cpp
    Change from calling shutdown() directly on the IO threads to call shutdown() on the 
    thread barn instead since the former of these methods is not thread safe.
=== modified file 'storage/falcon/Cache.cpp'
--- a/storage/falcon/Cache.cpp	2009-02-12 19:31:23 +0000
+++ b/storage/falcon/Cache.cpp	2009-02-23 18:57:39 +0000
@@ -1042,7 +1042,7 @@ void Cache::shutdownThreads(void)
 {
 	for (int n = 0; n < numberIoThreads; ++n)
 		{
-		ioThreads[n]->shutdown();
+		database->threads->shutdown(ioThreads[n]);
 		ioThreads[n] = 0;
 		}