From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 20:24:20 +0200 Subject: Adding upstream version 14.2.21. Signed-off-by: Daniel Baumann --- src/mds/LocalLock.h | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 src/mds/LocalLock.h (limited to 'src/mds/LocalLock.h') diff --git a/src/mds/LocalLock.h b/src/mds/LocalLock.h new file mode 100644 index 00000000..d405a6b3 --- /dev/null +++ b/src/mds/LocalLock.h @@ -0,0 +1,65 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2004-2006 Sage Weil + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + + +#ifndef CEPH_LOCALLOCK_H +#define CEPH_LOCALLOCK_H + +#include "SimpleLock.h" + +class LocalLock : public SimpleLock { +public: + client_t last_wrlock_client; + + LocalLock(MDSCacheObject *o, LockType *t) : + SimpleLock(o, t) { + set_state(LOCK_LOCK); // always. + } + + bool is_locallock() const override { + return true; + } + + bool can_xlock_local() const { + return !is_wrlocked() && (get_xlock_by() == MutationRef()); + } + + bool can_wrlock() const { + return !is_xlocked(); + } + void get_wrlock(client_t client) { + ceph_assert(can_wrlock()); + SimpleLock::get_wrlock(); + last_wrlock_client = client; + } + void put_wrlock() { + SimpleLock::put_wrlock(); + if (get_num_wrlocks() == 0) + last_wrlock_client = client_t(); + } + client_t get_last_wrlock_client() const { + return last_wrlock_client; + } + + void print(ostream& out) const override { + out << "("; + _print(out); + if (last_wrlock_client >= 0) + out << " last_client=" << last_wrlock_client; + out << ")"; + } +}; + + +#endif -- cgit v1.2.3