105 lines
3.9 KiB
C
105 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* This file is part of the lwIP TCP/IP stack.
|
|
*
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
*/
|
|
|
|
#ifndef __SYS_ARCH_H__
|
|
#define __SYS_ARCH_H__
|
|
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "freertos/queue.h"
|
|
#include "freertos/semphr.h"
|
|
#include "arch/vfs_lwip.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
typedef SemaphoreHandle_t sys_sem_t;
|
|
typedef SemaphoreHandle_t sys_mutex_t;
|
|
typedef TaskHandle_t sys_thread_t;
|
|
|
|
typedef struct sys_mbox_s {
|
|
QueueHandle_t os_mbox;
|
|
void *owner;
|
|
}* sys_mbox_t;
|
|
|
|
/** This is returned by _fromisr() sys functions to tell the outermost function
|
|
* that a higher priority task was woken and the scheduler needs to be invoked.
|
|
*/
|
|
#define ERR_NEED_SCHED 123
|
|
|
|
void sys_delay_ms(uint32_t ms);
|
|
#define sys_msleep(ms) sys_delay_ms(ms)
|
|
|
|
#define LWIP_COMPAT_MUTEX 0
|
|
|
|
#if !LWIP_COMPAT_MUTEX
|
|
#define sys_mutex_valid( x ) ( ( ( *x ) == NULL) ? pdFALSE : pdTRUE )
|
|
#define sys_mutex_set_invalid( x ) ( ( *x ) = NULL )
|
|
#endif
|
|
|
|
#define sys_mbox_valid( x ) ( ( ( *x ) == NULL) ? pdFALSE : pdTRUE )
|
|
|
|
/* Define the sys_mbox_set_invalid() to empty to support lock-free mbox in ESP LWIP.
|
|
*
|
|
* The basic idea about the lock-free mbox is that the mbox should always be valid unless
|
|
* no socket APIs are using the socket and the socket is closed. ESP LWIP achieves this by
|
|
* following two changes to official LWIP:
|
|
* 1. Postpone the deallocation of mbox to netconn_free(), in other words, free the mbox when
|
|
* no one is using the socket.
|
|
* 2. Define the sys_mbox_set_invalid() to empty if the mbox is not actually freed.
|
|
|
|
* The second change is necessary. Consider a common scenario: the application task calls
|
|
* recv() to receive packets from the socket, the sys_mbox_valid() returns true. Because there
|
|
* is no lock for the mbox, the LWIP CORE can call sys_mbox_set_invalid() to set the mbox at
|
|
* anytime and the thread-safe issue may happen.
|
|
*
|
|
* However, if the sys_mbox_set_invalid() is not called after sys_mbox_free(), e.g. in netconn_alloc(),
|
|
* we need to initialize the mbox to invalid explicitly since sys_mbox_set_invalid() now is empty.
|
|
*/
|
|
#define sys_mbox_set_invalid( x ) *x = NULL
|
|
|
|
#define sys_sem_valid( x ) ( ( ( *x ) == NULL) ? pdFALSE : pdTRUE )
|
|
#define sys_sem_set_invalid( x ) ( ( *x ) = NULL )
|
|
|
|
void sys_delay_ms(uint32_t ms);
|
|
sys_sem_t* sys_thread_sem_init(void);
|
|
void sys_thread_sem_deinit(void);
|
|
sys_sem_t* sys_thread_sem_get(void);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __SYS_ARCH_H__ */
|
|
|