4 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include "bctrace.inc"
29 class Mutex : public trace_info
32 Mutex(const char *title = 0, int recursive = 0);
35 int lock(const char *location = 0);
37 // Calls pthread_mutex_trylock, whose effect depends on library version.
38 int trylock(const char *location = 0);
40 // Returns 1 if count is > 0
43 // Number of times the thread currently holding the mutex has locked it.
44 // For recursive locking.
46 // ID of the thread currently holding the mutex. For recursive locking.
50 // Lock the variables for recursive locking.
51 pthread_mutex_t recursive_lock;
52 pthread_mutex_t mutex;
60 mLock(Mutex &m) : mutex(m) { mutex.lock(); }
61 mLock(Mutex *m) : mutex(*m) { mutex.lock(); }
62 ~mLock() { mutex.unlock(); }