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/*
* Copyright (c) 2014, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of Texas Instruments Incorporated 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 __SYS_LOCK_H__
#define __SYS_LOCK_H__
/*
* Lock routines for TI-RTOS multi-threaded apps. The implementation
* is provided by TI-RTOS kernel.
*/
/*
* Dummy semaphore structure of size 32 bytes. This will be
* type casted to Semaphore_struct in TI-RTOS.
*/
typedef struct {
void *dummy[8];
} __dummy_sem_t;
typedef struct {
__dummy_sem_t sem;
unsigned char init_done;
} __lock_mutex_t;
typedef struct {
void *owner;
__dummy_sem_t sem;
unsigned int count;
unsigned char init_done;
} __lock_recursive_mutex_t;
typedef __lock_mutex_t _LOCK_T;
typedef __lock_recursive_mutex_t _LOCK_RECURSIVE_T;
#include <_ansi.h>
#define __LOCK_INIT(class,lock) \
class _LOCK_T lock = { .sem.dummy = {0, 0, 0, 0, 0, 0, 0, 0}, \
.init_done = 0 }
#define __LOCK_INIT_RECURSIVE(class,lock) \
class _LOCK_RECURSIVE_T lock = { .owner = 0, \
.sem.dummy = {0, 0, 0, 0, 0, 0, 0, 0}, .count = 0, \
.init_done = 0 }
extern void __libc_lock_init(_LOCK_T *lock);
extern void __libc_lock_init_recursive(_LOCK_RECURSIVE_T *lock);
extern void __libc_lock_close(_LOCK_T *lock);
extern void __libc_lock_close_recursive(_LOCK_RECURSIVE_T *lock);
extern void __libc_lock_acquire(_LOCK_T *lock);
extern void __libc_lock_acquire_recursive(_LOCK_RECURSIVE_T *lock);
extern void __libc_lock_release(_LOCK_T *lock);
extern void __libc_lock_release_recursive(_LOCK_RECURSIVE_T *lock);
/* Returns 0 for success and non-zero for failure */
extern int __libc_lock_try_acquire(_LOCK_T *lock);
extern int __libc_lock_try_acquire_recursive(_LOCK_RECURSIVE_T *lock);
#define __lock_init(lock) \
__libc_lock_init(&(lock))
#define __lock_init_recursive(lock) \
__libc_lock_init_recursive(&(lock))
#define __lock_close(lock) \
__libc_lock_close(&(lock))
#define __lock_close_recursive(lock) \
__libc_lock_close_recursive(&(lock))
#define __lock_acquire(lock) \
__libc_lock_acquire(&(lock))
#define __lock_acquire_recursive(lock) \
__libc_lock_acquire_recursive(&(lock))
#define __lock_try_acquire(lock) \
__libc_lock_try_acquire(&(lock))
#define __lock_try_acquire_recursive(lock) \
__libc_lock_try_acquire_recursive(&(lock))
#define __lock_release(lock) \
__libc_lock_release(&(lock))
#define __lock_release_recursive(lock) \
__libc_lock_release_recursive(&(lock))
#endif /* __SYS_LOCK_H__ */
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