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/**
* Copyright (c) 2010-2012 Broadcom. 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,
* without modification.
* 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. The names of the above-listed copyright holders may not be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2, as published by the Free
* Software Foundation.
*
* 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 VCHI_CFG_INTERNAL_H_
#define VCHI_CFG_INTERNAL_H_
/****************************************************************************************
* Control optimisation attempts.
***************************************************************************************/
// Don't use lots of short-term locks - use great long ones, reducing the overall locks-per-second
#define VCHI_COARSE_LOCKING
// Avoid lock then unlock on exit from blocking queue operations (msg tx, bulk rx/tx)
// (only relevant if VCHI_COARSE_LOCKING)
#define VCHI_ELIDE_BLOCK_EXIT_LOCK
// Avoid lock on non-blocking peek
// (only relevant if VCHI_COARSE_LOCKING)
#define VCHI_AVOID_PEEK_LOCK
// Use one slot-handler thread per connection, rather than 1 thread dealing with all connections in rotation.
#define VCHI_MULTIPLE_HANDLER_THREADS
// Put free descriptors onto the head of the free queue, rather than the tail, so that we don't thrash
// our way through the pool of descriptors.
#define VCHI_PUSH_FREE_DESCRIPTORS_ONTO_HEAD
// Don't issue a MSG_AVAILABLE callback for every single message. Possibly only safe if VCHI_COARSE_LOCKING.
#define VCHI_FEWER_MSG_AVAILABLE_CALLBACKS
// Don't use message descriptors for TX messages that don't need them
#define VCHI_MINIMISE_TX_MSG_DESCRIPTORS
// Nano-locks for multiqueue
//#define VCHI_MQUEUE_NANOLOCKS
// Lock-free(er) dequeuing
//#define VCHI_RX_NANOLOCKS
#endif /*VCHI_CFG_INTERNAL_H_*/
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