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-/******************************************************************************
-
- Copyright (c) 2001-2012, Intel Corporation
- All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
-
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
-
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-
- 3. Neither the name of the Intel Corporation nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGE.
-
-******************************************************************************/
-
-#ifndef AVBTS_OSLOCK_HPP
-#define AVBTS_OSLOCK_HPP
-
-/**@file*/
-
-/**
- * @brief Lock type enumeration. The possible values are:
- * - oslock_recursive;
- * - oslock_nonrecursive;
- */
-typedef enum { oslock_recursive, oslock_nonrecursive } OSLockType;
-/**
- * @brief Lock result enumeration. The possible values are:
- * - oslock_ok;
- * - oslock_self;
- * - oslock_held;
- * - oslock_fail;
- */
-typedef enum { oslock_ok, oslock_self, oslock_held, oslock_fail } OSLockResult;
-
-/**
- * @brief Provides a generic mechanism for locking critical sections.
- */
-class OSLock {
- public:
- /**
- * @brief Locks a critical section
- * @return OSLockResult enumeration
- */
- virtual OSLockResult lock() = 0;
-
- /**
- * @brief Unlocks a critical section
- * @return OSLockResult enumeration
- */
- virtual OSLockResult unlock() = 0;
-
- /**
- * @brief Tries locking a critical section
- * @return OSLockResult enumeration
- */
- virtual OSLockResult trylock() = 0;
- protected:
- /**
- * @brief Default constructor
- */
- OSLock() { }
-
- /**
- * @brief Initializes locking mechanism
- * @param type Enumeration OSLockType
- * @return FALSE
- */
- bool initialize(OSLockType type) {
- return false;
- }
- virtual ~OSLock() = 0;
-};
-
-inline OSLock::~OSLock() {}
-
-/**
- * @brief Provides a factory pattern for OSLock
- */
-class OSLockFactory {
- public:
-
- /**
- * @brief Creates locking mechanism
- * @param type Enumeration OSLockType
- * @return Pointer to an enumeration of type OSLock
- */
- virtual OSLock *createLock(OSLockType type) const = 0;
- virtual ~OSLockFactory() = 0;
-};
-
-inline OSLockFactory::~OSLockFactory () {}
-
-#endif