From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 21 Apr 2024 13:54:28 +0200 Subject: Adding upstream version 18.2.2. Signed-off-by: Daniel Baumann --- src/mds/LocalLockC.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 src/mds/LocalLockC.h (limited to 'src/mds/LocalLockC.h') diff --git a/src/mds/LocalLockC.h b/src/mds/LocalLockC.h new file mode 100644 index 000000000..96cea93eb --- /dev/null +++ b/src/mds/LocalLockC.h @@ -0,0 +1,64 @@ +// -*- 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 LocalLockC : public SimpleLock { +public: + LocalLockC(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(std::ostream& out) const override { + out << "("; + _print(out); + if (last_wrlock_client >= 0) + out << " last_client=" << last_wrlock_client; + out << ")"; + } + +private: + client_t last_wrlock_client; +}; +#endif -- cgit v1.2.3