106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/*
|
|
Cubesat Space Protocol - A small network-layer protocol designed for Cubesats
|
|
Copyright (C) 2012 Gomspace ApS (http://www.gomspace.com)
|
|
Copyright (C) 2012 AAUSAT3 Project (http://aausat3.space.aau.dk)
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <pthread.h>
|
|
#include <sys/time.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
#include <inttypes.h>
|
|
#include <stdio.h>
|
|
|
|
/* CSP includes */
|
|
#include <csp/csp.h>
|
|
|
|
#include <csp/arch/csp_semaphore.h>
|
|
|
|
int csp_mutex_create(csp_mutex_t * mutex) {
|
|
csp_log_lock("Mutex init: %p", mutex);
|
|
*mutex = pthread_queue_create(1, sizeof(int));
|
|
if (mutex) {
|
|
int dummy = 0;
|
|
pthread_queue_enqueue(*mutex, &dummy, 0);
|
|
return CSP_SEMAPHORE_OK;
|
|
} else {
|
|
return CSP_SEMAPHORE_ERROR;
|
|
}
|
|
}
|
|
|
|
int csp_mutex_remove(csp_mutex_t * mutex) {
|
|
pthread_queue_delete(*mutex);
|
|
return CSP_SEMAPHORE_OK;
|
|
}
|
|
|
|
int csp_mutex_lock(csp_mutex_t * mutex, uint32_t timeout) {
|
|
|
|
int ret;
|
|
csp_log_lock("Wait: %p timeout %"PRIu32, mutex, timeout);
|
|
|
|
if (timeout == CSP_INFINITY) {
|
|
/* TODO: fix this to be infinite */
|
|
int dummy = 0;
|
|
if (pthread_queue_dequeue(*mutex, &dummy, timeout) == PTHREAD_QUEUE_OK)
|
|
ret = CSP_MUTEX_OK;
|
|
else
|
|
ret = CSP_MUTEX_ERROR;
|
|
} else {
|
|
int dummy = 0;
|
|
if (pthread_queue_dequeue(*mutex, &dummy, timeout) == PTHREAD_QUEUE_OK)
|
|
ret = CSP_MUTEX_OK;
|
|
else
|
|
ret = CSP_MUTEX_ERROR;
|
|
}
|
|
|
|
return ret == CSP_MUTEX_ERROR ? CSP_SEMAPHORE_ERROR : CSP_SEMAPHORE_OK;
|
|
}
|
|
|
|
int csp_mutex_unlock(csp_mutex_t * mutex) {
|
|
int dummy = 0;
|
|
if (pthread_queue_enqueue(*mutex, &dummy, 0) == PTHREAD_QUEUE_OK) {
|
|
return CSP_SEMAPHORE_OK;
|
|
} else {
|
|
return CSP_SEMAPHORE_ERROR;
|
|
}
|
|
}
|
|
|
|
int csp_bin_sem_create(csp_bin_sem_handle_t * sem) {
|
|
return csp_mutex_create(sem);
|
|
}
|
|
|
|
int csp_bin_sem_remove(csp_bin_sem_handle_t * sem) {
|
|
return csp_mutex_remove(sem);
|
|
}
|
|
|
|
int csp_bin_sem_wait(csp_bin_sem_handle_t * sem, uint32_t timeout) {
|
|
return csp_mutex_lock(sem, timeout);
|
|
}
|
|
|
|
int csp_bin_sem_post(csp_bin_sem_handle_t * sem) {
|
|
return csp_mutex_unlock(sem);
|
|
}
|
|
|
|
int csp_bin_sem_post_isr(csp_bin_sem_handle_t * sem, CSP_BASE_TYPE * task_woken) {
|
|
return csp_mutex_unlock(sem);
|
|
}
|