further reduce diffs to 5.5, monty review

include/thr_alarm.h

@@ -93,7 +93,6 @@ typedef struct st_alarm {
 extern uint thr_client_alarm;
 extern pthread_t alarm_thread;
 
-
 #define thr_alarm_init(A) (*(A))=0
 #define thr_alarm_in_use(A) (*(A)!= 0)
 void init_thr_alarm(uint max_alarm);

include/violite.h

@@ -175,6 +175,17 @@ void vio_end(void);
 #define vio_is_connected(vio)                   (vio)->is_connected(vio)
 #endif /* !defined(DONT_MAP_VIO) */
 
+#ifdef _WIN32
+/*
+  Set thread id for io cancellation (required on Windows XP only,
+  and should to be removed if XP is no more supported)
+*/
+
+#define vio_set_thread_id(vio, tid) if(vio) vio->thread_id= tid
+#else
+#define vio_set_thread_id(vio, tid)
+#endif
+
 /* This enumerator is used in parser - should be always visible */
 enum SSL_type
 {
@@ -237,7 +248,7 @@ struct st_vio
   char    *shared_memory_pos;
 #endif /* HAVE_SMEM */
 #ifdef _WIN32
-  DWORD thread_id; /* Used to XP only in vio_shutdown */
+  DWORD thread_id; /* Used on XP only by vio_shutdown() */
   OVERLAPPED pipe_overlapped;
   DWORD read_timeout_ms;
   DWORD write_timeout_ms;

mysql-test/r/kill.result

@@ -60,6 +60,9 @@ SET DEBUG_SYNC= 'now WAIT_FOR in_sync';
 KILL @id;
 SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
 Got one of the listed errors
+SELECT 1;
+1
+1
 SET DEBUG_SYNC = 'RESET';
 DROP TABLE t1, t2;
 SET DEBUG_SYNC= 'before_acos_function SIGNAL in_sync WAIT_FOR kill';

mysql-test/r/mysqld--help-win.result

@@ -941,7 +941,7 @@ lower-case-table-names 1
 master-info-file master.info
 master-retry-count 86400
 master-verify-checksum FALSE
-max-allowed-packet 8388608
+max-allowed-packet 1048576
 max-binlog-cache-size 18446744073709547520
 max-binlog-size 1073741824
 max-binlog-stmt-cache-size 18446744073709547520
@@ -952,7 +952,7 @@ max-error-count 64
 max-heap-table-size 16777216
 max-join-size 18446744073709551615
 max-length-for-sort-data 1024
-max-long-data-size 8388608
+max-long-data-size 1048576
 max-prepared-stmt-count 16382
 max-relay-log-size 0
 max-seeks-for-key 18446744073709551615

mysql-test/t/flush_read_lock_kill.test

@@ -65,7 +65,7 @@ KILL CONNECTION @id;
 connection con1;
 --echo # Try to reap FLUSH TABLES WITH READ LOCK, 
 --echo # it fail due to killed statement and connection.
---error 1317,2013,1927
+--error 1317,2013
 reap;
 
 --echo # Switching to 'con2'.

mysql-test/t/kill.test

@@ -142,10 +142,9 @@ KILL @id;
 SET DEBUG_SYNC= 'now WAIT_FOR con1_end';
 
 connection con1;
---error 1317,1053,2006,2013,1927
+--error 1317,1053,2006,2013
 reap;
---error 0,2013
-let $ignore= `SELECT 1`;
+SELECT 1;
 
 connection default;
 SET DEBUG_SYNC = 'RESET';

sql/sql_class.cc

@@ -1701,11 +1701,7 @@ bool THD::store_globals()
   real_id= pthread_self();                      // For debugging
   mysys_var->stack_ends_here= thread_stack +    // for consistency, see libevent_thread_proc
                               STACK_DIRECTION * (long)my_thread_stack_size;
-
-#ifdef _WIN32
-  if (net.vio)
-    net.vio->thread_id= real_id; /* Required to support IO cancelation on XP */
-#endif
+  vio_set_thread_id(net.vio, real_id);
   /*
     We have to call thr_lock_info_init() again here as THD may have been
     created in another thread

sql/sql_class.h

@@ -2341,10 +2341,7 @@ public:
   {
     mysql_mutex_lock(&LOCK_thd_data);
     active_vio = vio;
-#ifdef _WIN32
-    /* Required to support cancelation on XP */
-    active_vio->thread_id = pthread_self();
-#endif
+    vio_set_thread_id(vio, pthread_self());
     mysql_mutex_unlock(&LOCK_thd_data);
   }
   inline void clear_active_vio()

vio/vio.c

@@ -64,7 +64,7 @@ int vio_shared_memory_shutdown(Vio *vio, int how)
 
 int vio_pipe_shutdown(Vio *vio, int how)
 {
-  return vio_socket_shutdown(vio, how); /* cancels io */
+  return cancel_io(vio->hPipe, vio->thread_id);
 }
 #endif
 

vio/vio_priv.h

@@ -39,6 +39,7 @@ size_t vio_read_pipe(Vio *vio, uchar * buf, size_t size);
 size_t vio_write_pipe(Vio *vio, const uchar * buf, size_t size);
 my_bool vio_is_connected_pipe(Vio *vio);
 int vio_close_pipe(Vio * vio);
+int cancel_io(HANDLE handle, DWORD thread_id);
 int vio_shutdown_pipe(Vio *vio,int how);
 #endif
 

vio/viosocket.c

@@ -144,7 +144,7 @@ static void CALLBACK cancel_io_apc(ULONG_PTR data)
   IO. On Vista+, simpler cancelation is done with CancelIoEx. 
 */
 
-static int cancel_io(HANDLE handle, DWORD thread_id)
+int cancel_io(HANDLE handle, DWORD thread_id)
 {
   static BOOL (WINAPI  *fp_CancelIoEx) (HANDLE, OVERLAPPED *);
   static volatile int first_time= 1;
@@ -177,11 +177,12 @@ static int cancel_io(HANDLE handle, DWORD thread_id)
 
 int vio_socket_shutdown(Vio *vio, int how)
 {
+  int ret= shutdown(vio->sd, how);
 #ifdef  _WIN32
-  return cancel_io((HANDLE)vio->sd, vio->thread_id);
-#else
-  return shutdown(vio->sd, how);
+  /* Cancel possible IO in progress (shutdown does not do that on Windows). */
+  (void) cancel_io((HANDLE)vio->sd, vio->thread_id);
 #endif
+  return ret;
 }