| #ifndef __ALT_SEM_H__ |
| #define __ALT_SEM_H__ |
| |
| /****************************************************************************** |
| * * |
| * License Agreement * |
| * * |
| * Copyright (c) 2004 Altera Corporation, San Jose, California, USA. * |
| * All rights reserved. * |
| * * |
| * Permission is hereby granted, free of charge, to any person obtaining a * |
| * copy of this software and associated documentation files (the "Software"), * |
| * to deal in the Software without restriction, including without limitation * |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, * |
| * and/or sell copies of the Software, and to permit persons to whom the * |
| * Software is furnished to do so, subject to the following conditions: * |
| * * |
| * The above copyright notice and this permission notice shall be included in * |
| * all copies or substantial portions of the Software. * |
| * * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * |
| * DEALINGS IN THE SOFTWARE. * |
| * * |
| * * |
| * Altera does not recommend, suggest or require that this reference design * |
| * file be used in conjunction or combination with any other product. * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * * |
| * THIS IS A LIBRARY READ-ONLY SOURCE FILE. DO NOT EDIT. * |
| * * |
| ******************************************************************************/ |
| |
| /* |
| * This header provides macro definitions that can be used to create and use |
| * semaphores. These macros can be used in both a uC/OS-II based environment, |
| * and a single threaded HAL based environment. |
| * |
| * The motivation for these macros is to allow code to be developed which is |
| * thread safe under uC/OS-II, but incurs no additional overhead when used in a |
| * single threaded HAL environment. |
| * |
| * In the case of a single threaded HAL environment, they compile to |
| * "do nothing" directives, which ensures they do not contribute to the final |
| * executable. |
| * |
| * The following macros are available: |
| * |
| * ALT_SEM - Create a semaphore instance. |
| * ALT_EXTERN_SEM - Create a reference to an external semaphore instance. |
| * ALT_STATIC_SEM - Create a static semaphore instance. |
| * ALT_SEM_CREATE - Initialise a semaphore. |
| * ALT_SEM_PEND - Pend on a semaphore. |
| * ALT_SEM_POST - Increment a semaphore. |
| * |
| * Input arguments and return codes are all consistant with the equivalent |
| * uC/OS-II function. |
| * |
| * It's important to be careful in the use of the macros: ALT_SEM, |
| * ALT_EXTERN_SEM, and ALT_STATIC_SEM. In these three cases the semi-colon is |
| * included in the macro definition; so, for example, you should use: |
| * |
| * ALT_SEM(mysem) |
| * |
| * not: |
| * |
| * ALT_SEM(mysem); |
| * |
| * The inclusion of the semi-colon has been necessary to ensure the macros can |
| * compile with no warnings when used in a single threaded HAL environment. |
| * |
| */ |
| |
| #include "priv/alt_no_error.h" |
| |
| #define ALT_SEM(sem) |
| #define ALT_EXTERN_SEM(sem) |
| #define ALT_STATIC_SEM(sem) |
| |
| #define ALT_SEM_CREATE(sem, value) alt_no_error () |
| #define ALT_SEM_PEND(sem, timeout) alt_no_error () |
| #define ALT_SEM_POST(sem) alt_no_error () |
| |
| #ifndef ALT_SINGLE_THREADED |
| #define ALT_SINGLE_THREADED |
| #endif |
| |
| #endif /* __ALT_SEM_H__ */ |