1 /* 2 * Copyright (c) 1999-2000, Eric Moon. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions, and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 27 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 32 // SimpleLockable.h 33 // * PURPOSE 34 // Basic BLocker implementation of ILockable. 35 // 36 // * HISTORY 37 // e.moon 7jul99 Cortex rework. 38 // e.moon 13apr99 Begun (beDub) 39 40 #ifndef __SimpleLockable_H__ 41 #define __SimpleLockable_H__ 42 43 #include "ILockable.h" 44 #include <Locker.h> 45 46 #include "cortex_defs.h" 47 __BEGIN_CORTEX_NAMESPACE 48 49 class SimpleLockable : 50 public ILockable { 51 52 public: // *** ctor 53 virtual ~SimpleLockable() {} 54 SimpleLockable() {} 55 SimpleLockable(const char* name) : m_lock(name) {} 56 57 public: // *** ILockable impl. 58 virtual bool lock( 59 lock_t type=WRITE, 60 bigtime_t timeout=B_INFINITE_TIMEOUT) { 61 62 return m_lock.LockWithTimeout(timeout) == B_OK; 63 } 64 65 virtual bool unlock( 66 lock_t type=WRITE) { 67 m_lock.Unlock(); 68 return true; 69 } 70 71 virtual bool isLocked( 72 lock_t type=WRITE) const { 73 return m_lock.IsLocked(); 74 } 75 76 protected: // members 77 mutable BLocker m_lock; 78 }; 79 80 __END_CORTEX_NAMESPACE 81 #endif /*__SimpleLockable_H__*/ 82