aboutsummaryrefslogtreecommitdiffstats
path: root/src/DatabaseLock.hxx
diff options
context:
space:
mode:
Diffstat (limited to 'src/DatabaseLock.hxx')
-rw-r--r--src/DatabaseLock.hxx97
1 files changed, 0 insertions, 97 deletions
diff --git a/src/DatabaseLock.hxx b/src/DatabaseLock.hxx
deleted file mode 100644
index 1bd5cbe61..000000000
--- a/src/DatabaseLock.hxx
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright (C) 2003-2013 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * 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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-/** \file
- *
- * Support for locking data structures from the database, for safe
- * multi-threading.
- */
-
-#ifndef MPD_DB_LOCK_HXX
-#define MPD_DB_LOCK_HXX
-
-#include "check.h"
-#include "thread/Mutex.hxx"
-#include "Compiler.h"
-
-#include <assert.h>
-
-extern Mutex db_mutex;
-
-#ifndef NDEBUG
-
-#include "thread/Id.hxx"
-
-extern ThreadId db_mutex_holder;
-
-/**
- * Does the current thread hold the database lock?
- */
-gcc_pure
-static inline bool
-holding_db_lock(void)
-{
- return db_mutex_holder.IsInside();
-}
-
-#endif
-
-/**
- * Obtain the global database lock. This is needed before
- * dereferencing a #song or #directory. It is not recursive.
- */
-static inline void
-db_lock(void)
-{
- assert(!holding_db_lock());
-
- db_mutex.lock();
-
- assert(db_mutex_holder.IsNull());
-#ifndef NDEBUG
- db_mutex_holder = ThreadId::GetCurrent();
-#endif
-}
-
-/**
- * Release the global database lock.
- */
-static inline void
-db_unlock(void)
-{
- assert(holding_db_lock());
-#ifndef NDEBUG
- db_mutex_holder = ThreadId::Null();
-#endif
-
- db_mutex.unlock();
-}
-
-class ScopeDatabaseLock {
-public:
- ScopeDatabaseLock() {
- db_lock();
- }
-
- ~ScopeDatabaseLock() {
- db_unlock();
- }
-};
-
-#endif