549 lines
15 KiB
C
549 lines
15 KiB
C
/*
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* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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/* lwIP includes. */
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#include <pthread.h>
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#include "lwip/debug.h"
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#include "lwip/def.h"
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#include "lwip/sys.h"
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#include "lwip/mem.h"
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#include "arch/sys_arch.h"
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#include "lwip/stats.h"
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#include "esp_log.h"
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/* This is the number of threads that can be started with sys_thread_new() */
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#define SYS_THREAD_MAX 4
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#define TAG "lwip_arch"
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static sys_mutex_t g_lwip_protect_mutex = NULL;
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static pthread_key_t sys_thread_sem_key;
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static void sys_thread_sem_free(void* data);
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#if !LWIP_COMPAT_MUTEX
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/** Create a new mutex
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* @param mutex pointer to the mutex to create
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* @return a new mutex */
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err_t
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sys_mutex_new(sys_mutex_t *pxMutex)
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{
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err_t xReturn = ERR_MEM;
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*pxMutex = xSemaphoreCreateMutex();
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if (*pxMutex != NULL) {
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xReturn = ERR_OK;
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}
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("sys_mutex_new: m=%p\n", *pxMutex));
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return xReturn;
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}
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/** Lock a mutex
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* @param mutex the mutex to lock */
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void ESP_IRAM_ATTR
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sys_mutex_lock(sys_mutex_t *pxMutex)
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{
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while (xSemaphoreTake(*pxMutex, portMAX_DELAY) != pdPASS);
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}
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err_t
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sys_mutex_trylock(sys_mutex_t *pxMutex)
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{
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if (xSemaphoreTake(*pxMutex, 0) == pdPASS) return 0;
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else return -1;
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}
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/** Unlock a mutex
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* @param mutex the mutex to unlock */
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void ESP_IRAM_ATTR
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sys_mutex_unlock(sys_mutex_t *pxMutex)
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{
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xSemaphoreGive(*pxMutex);
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}
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/** Delete a semaphore
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* @param mutex the mutex to delete */
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void
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sys_mutex_free(sys_mutex_t *pxMutex)
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{
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("sys_mutex_free: m=%p\n", *pxMutex));
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vQueueDelete(*pxMutex);
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}
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#endif
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/*-----------------------------------------------------------------------------------*/
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// Creates and returns a new semaphore. The "count" argument specifies
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// the initial state of the semaphore. TBD finish and test
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err_t
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sys_sem_new(sys_sem_t *sem, u8_t count)
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{
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err_t xReturn = ERR_MEM;
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vSemaphoreCreateBinary(*sem);
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if ((*sem) != NULL) {
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if (count == 0) { // Means it can't be taken
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xSemaphoreTake(*sem, 1);
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}
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xReturn = ERR_OK;
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} else {
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; // TBD need assert
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}
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return xReturn;
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}
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/*-----------------------------------------------------------------------------------*/
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// Signals a semaphore
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void ESP_IRAM_ATTR
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sys_sem_signal(sys_sem_t *sem)
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{
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xSemaphoreGive(*sem);
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}
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/*-----------------------------------------------------------------------------------*/
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// Signals a semaphore (from ISR)
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int sys_sem_signal_isr(sys_sem_t *sem)
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{
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BaseType_t woken = pdFALSE;
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xSemaphoreGiveFromISR(*sem, &woken);
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return woken == pdTRUE;
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}
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/*-----------------------------------------------------------------------------------*/
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/*
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Blocks the thread while waiting for the semaphore to be
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signaled. If the "timeout" argument is non-zero, the thread should
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only be blocked for the specified time (measured in
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milliseconds).
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If the timeout argument is non-zero, the return value is the number of
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milliseconds spent waiting for the semaphore to be signaled. If the
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semaphore wasn't signaled within the specified time, the return value is
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SYS_ARCH_TIMEOUT. If the thread didn't have to wait for the semaphore
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(i.e., it was already signaled), the function may return zero.
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Notice that lwIP implements a function with a similar name,
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sys_sem_wait(), that uses the sys_arch_sem_wait() function.
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*/
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u32_t ESP_IRAM_ATTR
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sys_arch_sem_wait(sys_sem_t *sem, u32_t timeout)
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{
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portTickType StartTime, EndTime, Elapsed;
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unsigned long ulReturn;
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StartTime = xTaskGetTickCount();
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if (timeout != 0) {
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if (xSemaphoreTake(*sem, timeout / portTICK_PERIOD_MS) == pdTRUE) {
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EndTime = xTaskGetTickCount();
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Elapsed = (EndTime - StartTime) * portTICK_PERIOD_MS;
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if (Elapsed == 0) {
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Elapsed = 1;
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}
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ulReturn = Elapsed;
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} else {
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ulReturn = SYS_ARCH_TIMEOUT;
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}
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} else { // must block without a timeout
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while (xSemaphoreTake(*sem, portMAX_DELAY) != pdTRUE);
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EndTime = xTaskGetTickCount();
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Elapsed = (EndTime - StartTime) * portTICK_PERIOD_MS;
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if (Elapsed == 0) {
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Elapsed = 1;
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}
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ulReturn = Elapsed;
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}
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return ulReturn ; // return time blocked
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}
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/*-----------------------------------------------------------------------------------*/
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// Deallocates a semaphore
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void
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sys_sem_free(sys_sem_t *sem)
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{
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vSemaphoreDelete(*sem);
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}
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/*-----------------------------------------------------------------------------------*/
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// Creates an empty mailbox.
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err_t
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sys_mbox_new(sys_mbox_t *mbox, int size)
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{
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*mbox = mem_malloc(sizeof(struct sys_mbox_s));
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if (*mbox == NULL){
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("fail to new *mbox\n"));
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return ERR_MEM;
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}
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(*mbox)->os_mbox = xQueueCreate(size, sizeof(void *));
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if ((*mbox)->os_mbox == NULL) {
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("fail to new *mbox->os_mbox\n"));
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free(*mbox);
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return ERR_MEM;
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}
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#if ESP_THREAD_SAFE
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(*mbox)->owner = NULL;
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#endif
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("new *mbox ok mbox=%p os_mbox=%p\n", *mbox, (*mbox)->os_mbox));
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return ERR_OK;
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}
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/*-----------------------------------------------------------------------------------*/
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// Posts the "msg" to the mailbox.
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void ESP_IRAM_ATTR
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sys_mbox_post(sys_mbox_t *mbox, void *msg)
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{
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while (xQueueSendToBack((*mbox)->os_mbox, &msg, portMAX_DELAY) != pdTRUE);
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}
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/*-----------------------------------------------------------------------------------*/
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err_t ESP_IRAM_ATTR
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sys_mbox_trypost(sys_mbox_t *mbox, void *msg)
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{
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err_t xReturn;
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if (xQueueSend((*mbox)->os_mbox, &msg, (portTickType)0) == pdPASS) {
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xReturn = ERR_OK;
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} else {
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("trypost mbox=%p fail\n", (*mbox)->os_mbox));
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xReturn = ERR_MEM;
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}
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return xReturn;
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}
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/*-----------------------------------------------------------------------------------*/
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/*
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Blocks the thread until a message arrives in the mailbox, but does
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not block the thread longer than "timeout" milliseconds (similar to
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the sys_arch_sem_wait() function). The "msg" argument is a result
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parameter that is set by the function (i.e., by doing "*msg =
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ptr"). The "msg" parameter maybe NULL to indicate that the message
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should be dropped.
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The return values are the same as for the sys_arch_sem_wait() function:
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Number of milliseconds spent waiting or SYS_ARCH_TIMEOUT if there was a
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timeout.
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Note that a function with a similar name, sys_mbox_fetch(), is
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implemented by lwIP.
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*/
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u32_t ESP_IRAM_ATTR
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sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout)
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{
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void *dummyptr;
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portTickType StartTime, EndTime, Elapsed;
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unsigned long ulReturn;
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StartTime = xTaskGetTickCount();
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if (msg == NULL) {
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msg = &dummyptr;
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}
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if (*mbox == NULL){
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*msg = NULL;
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return -1;
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}
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if (timeout == 0) {
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timeout = portMAX_DELAY;
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} else {
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timeout = timeout / portTICK_PERIOD_MS;
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}
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*msg = NULL;
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if (pdTRUE == xQueueReceive((*mbox)->os_mbox, &(*msg), timeout)) {
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EndTime = xTaskGetTickCount();
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Elapsed = (EndTime - StartTime) * portTICK_PERIOD_MS;
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if (Elapsed == 0) {
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Elapsed = 1;
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}
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ulReturn = Elapsed;
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} else { // timed out blocking for message
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ulReturn = SYS_ARCH_TIMEOUT;
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}
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return ulReturn ; // return time blocked TBD test
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}
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/*-----------------------------------------------------------------------------------*/
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u32_t
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sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg)
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{
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void *pvDummy;
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unsigned long ulReturn;
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if (msg == NULL) {
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msg = &pvDummy;
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}
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if (pdTRUE == xQueueReceive((*mbox)->os_mbox, &(*msg), 0)) {
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ulReturn = ERR_OK;
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} else {
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ulReturn = SYS_MBOX_EMPTY;
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}
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return ulReturn;
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}
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/*-----------------------------------------------------------------------------------*/
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void
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sys_mbox_set_owner(sys_mbox_t *mbox, void* owner)
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{
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if (mbox && *mbox) {
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(*mbox)->owner = owner;
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("set mbox=%p owner=%p", *mbox, owner));
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}
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}
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/*
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Deallocates a mailbox. If there are messages still present in the
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mailbox when the mailbox is deallocated, it is an indication of a
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programming error in lwIP and the developer should be notified.
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*/
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void
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sys_mbox_free(sys_mbox_t *mbox)
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{
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uint32_t mbox_message_num = 0;
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if ( (NULL == mbox) || (NULL == *mbox) ) {
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ESP_LOGW(TAG, "WARNING: free null mbox\n");
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return;
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}
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mbox_message_num = uxQueueMessagesWaiting((*mbox)->os_mbox);
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("mbox free: mbox=%p os_mbox=%p owner=%p msg_num=%d\n",
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*mbox, (*mbox)->os_mbox, (*mbox)->owner, mbox_message_num));
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#if ESP_THREAD_SAFE
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if ((*mbox)->owner) {
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if (0 == mbox_message_num) {
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/*
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* If mbox->owner is not NULL, it indicates the mbox is recvmbox or acceptmbox,
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* we need to post a NULL message to mbox in case some application tasks are blocked
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* on this mbox
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*/
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if (sys_mbox_trypost(mbox, NULL) != ERR_OK) {
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/* Should never be here because post a message to empty mbox should always be successful */
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ESP_LOGW(TAG, "WARNING: failed to post NULL msg to mbox\n");
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} else {
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("mbox free: post null successfully\n"));
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}
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}
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(*mbox)->owner = NULL;
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} else {
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if (mbox_message_num > 1) {
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ESP_LOGW(TAG, "WARNING: mbox has %d message, potential memory leaking\n", mbox_message_num);
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}
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if (mbox_message_num > 0) {
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("mbox free: reset mbox queue\n"));
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xQueueReset((*mbox)->os_mbox);
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}
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/* For recvmbox or acceptmbox, free them in netconn_free() when all sockets' API are returned */
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vQueueDelete((*mbox)->os_mbox);
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free(*mbox);
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}
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#else
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vQueueDelete((*mbox)->os_mbox);
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free(*mbox);
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#endif
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*mbox = NULL;
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}
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/*-----------------------------------------------------------------------------------*/
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/*
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Starts a new thread with priority "prio" that will begin its execution in the
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function "thread()". The "arg" argument will be passed as an argument to the
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thread() function. The id of the new thread is returned. Both the id and
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the priority are system dependent.
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*/
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sys_thread_t
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sys_thread_new(const char *name, lwip_thread_fn thread, void *arg, int stacksize, int prio)
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{
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xTaskHandle created_task;
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portBASE_TYPE result;
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result = xTaskCreatePinnedToCore(thread, name, stacksize, arg, prio, &created_task,
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CONFIG_TCPIP_TASK_AFFINITY);
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if (result != pdPASS) {
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return NULL;
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}
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return created_task;
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}
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/*-----------------------------------------------------------------------------------*/
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// Initialize sys arch
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void
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sys_init(void)
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{
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if (ERR_OK != sys_mutex_new(&g_lwip_protect_mutex)) {
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ESP_LOGE(TAG, "sys_init: failed to init lwip protect mutex\n");
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}
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// Create the pthreads key for the per-thread semaphore storage
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pthread_key_create(&sys_thread_sem_key, sys_thread_sem_free);
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esp_vfs_lwip_sockets_register();
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}
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/*-----------------------------------------------------------------------------------*/
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u32_t
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sys_jiffies(void)
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{
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return xTaskGetTickCount();
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}
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/*-----------------------------------------------------------------------------------*/
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u32_t
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sys_now(void)
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{
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return (xTaskGetTickCount()*portTICK_PERIOD_MS);
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}
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/*
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This optional function does a "fast" critical region protection and returns
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the previous protection level. This function is only called during very short
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critical regions. An embedded system which supports ISR-based drivers might
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want to implement this function by disabling interrupts. Task-based systems
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might want to implement this by using a mutex or disabling tasking. This
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function should support recursive calls from the same task or interrupt. In
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other words, sys_arch_protect() could be called while already protected. In
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that case the return value indicates that it is already protected.
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sys_arch_protect() is only required if your port is supporting an operating
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system.
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*/
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sys_prot_t
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sys_arch_protect(void)
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{
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sys_mutex_lock(&g_lwip_protect_mutex);
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return (sys_prot_t) 1;
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}
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/*-----------------------------------------------------------------------------------*/
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/*
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This optional function does a "fast" set of critical region protection to the
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value specified by pval. See the documentation for sys_arch_protect() for
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more information. This function is only required if your port is supporting
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an operating system.
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*/
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void
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sys_arch_unprotect(sys_prot_t pval)
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{
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sys_mutex_unlock(&g_lwip_protect_mutex);
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}
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/*
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* get per thread semphore
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*/
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sys_sem_t* sys_thread_sem_get(void)
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{
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sys_sem_t *sem = pthread_getspecific(sys_thread_sem_key);
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if (!sem) {
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sem = sys_thread_sem_init();
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}
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("sem_get s=%p\n", sem));
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return sem;
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}
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static void sys_thread_sem_free(void* data) // destructor for TLS semaphore
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{
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sys_sem_t *sem = (sys_sem_t*)(data);
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if (sem && *sem){
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("sem del, sem=%p\n", *sem));
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vSemaphoreDelete(*sem);
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}
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if (sem) {
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LWIP_DEBUGF(ESP_THREAD_SAFE_DEBUG, ("sem pointer del, sem_p=%p\n", sem));
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free(sem);
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}
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}
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sys_sem_t* sys_thread_sem_init(void)
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{
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sys_sem_t *sem = (sys_sem_t*)mem_malloc(sizeof(sys_sem_t*));
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if (!sem){
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ESP_LOGE(TAG, "thread_sem_init: out of memory");
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return 0;
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}
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*sem = xSemaphoreCreateBinary();
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if (!(*sem)){
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free(sem);
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ESP_LOGE(TAG, "thread_sem_init: out of memory");
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return 0;
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}
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pthread_setspecific(sys_thread_sem_key, sem);
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return sem;
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}
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void sys_thread_sem_deinit(void)
|
|
{
|
|
sys_sem_t *sem = pthread_getspecific(sys_thread_sem_key);
|
|
if (sem != NULL) {
|
|
sys_thread_sem_free(sem);
|
|
pthread_setspecific(sys_thread_sem_key, NULL);
|
|
}
|
|
}
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|
|
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void sys_delay_ms(uint32_t ms)
|
|
{
|
|
vTaskDelay(ms / portTICK_PERIOD_MS);
|
|
}
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|
|
|
|