diff options
Diffstat (limited to 'storage/perfschema/pfs_lock.h')
| -rw-r--r-- | storage/perfschema/pfs_lock.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/storage/perfschema/pfs_lock.h b/storage/perfschema/pfs_lock.h index 09efecd1c5f..be84d0f7fb4 100644 --- a/storage/perfschema/pfs_lock.h +++ b/storage/perfschema/pfs_lock.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved. +/* Copyright (c) 2009, 2016, Oracle and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -156,6 +156,18 @@ struct pfs_lock } /** + Initialize a lock to dirty. + */ + void set_dirty(void) + { + /* Do not set the version to 0, read the previous value. */ + uint32 copy= PFS_atomic::load_u32(&m_version_state); + /* Increment the version, set the DIRTY state */ + uint32 new_val= (copy & VERSION_MASK) + VERSION_INC + PFS_LOCK_DIRTY; + PFS_atomic::store_u32(&m_version_state, new_val); + } + + /** Execute a dirty to free transition. This transition should be executed by the writer that owns the record. */ |