--- a
+++ b/src/ptmutex.hxx
@@ -0,0 +1,67 @@
+/* Copyright (C) 2011 J.F.Dockes
+ * 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.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#ifndef _PTMUTEX_H_INCLUDED_
+#define _PTMUTEX_H_INCLUDED_
+
+#include <pthread.h>
+
+/// A trivial wrapper/helper for pthread mutex locks
+
+namespace UPnPP {
+
+/// Lock storage with auto-initialization. Must be created before any
+/// lock-using thread of course (possibly as a static object).
+class PTMutexInit {
+public:
+ pthread_mutex_t m_mutex;
+ int m_status;
+ PTMutexInit() {
+ m_status = pthread_mutex_init(&m_mutex, 0);
+ }
+};
+
+/// Take the lock when constructed, release when deleted. Can be disabled
+/// by constructor params for conditional use.
+class PTMutexLocker {
+public:
+ // The nolock arg enables conditional locking
+ PTMutexLocker(PTMutexInit& l, bool nolock = false)
+ : m_lock(l), m_status(-1) {
+ if (!nolock) {
+ m_status = pthread_mutex_lock(&m_lock.m_mutex);
+ }
+ }
+ ~PTMutexLocker() {
+ if (m_status == 0) {
+ pthread_mutex_unlock(&m_lock.m_mutex);
+ }
+ }
+ int ok() {
+ return m_status == 0;
+ }
+ // For pthread_cond_wait etc.
+ pthread_mutex_t *getMutex() {
+ return &m_lock.m_mutex;
+ }
+private:
+ PTMutexInit& m_lock;
+ int m_status;
+};
+
+} // namespace UPnPP
+
+#endif /* _PTMUTEX_H_INCLUDED_ */