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/*
* Amazon FreeRTOS POSIX V1.1.0
* Copyright (C) 2018 Amazon.com, Inc. or its affiliates. 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.
*
* http://aws.amazon.com/freertos
* http://www.FreeRTOS.org
*/
#ifndef _FREERTOS_POSIX_INTERNAL_H_
#define _FREERTOS_POSIX_INTERNAL_H_
/**
* @file FreeRTOS_POSIX_internal.h
* @brief Internal structs and initializers for FreeRTOS+POSIX.
*/
/* Amazon FreeRTOS includes. */
#include "iot_doubly_linked_list.h"
/**
* @brief Mutex attribute object.
*/
#if posixconfigENABLE_PTHREAD_MUTEXATTR_T == 1
typedef struct pthread_mutexattr_internal
{
int iType; /**< Mutex type. */
} pthread_mutexattr_internal_t;
#endif
#if posixconfigENABLE_PTHREAD_MUTEX_T == 1
/**
* @brief Mutex.
*/
typedef struct pthread_mutex_internal
{
BaseType_t xIsInitialized; /**< Set to pdTRUE if this mutex is initialized, pdFALSE otherwise. */
StaticSemaphore_t xMutex; /**< FreeRTOS mutex. */
TaskHandle_t xTaskOwner; /**< Owner; used for deadlock detection and permission checks. */
pthread_mutexattr_internal_t xAttr; /**< Mutex attributes. */
} pthread_mutex_internal_t;
/**
* @brief Compile-time initializer of pthread_mutex_internal_t.
*/
#define FREERTOS_POSIX_MUTEX_INITIALIZER \
( ( ( pthread_mutex_internal_t ) \
{ \
.xIsInitialized = pdFALSE, \
.xMutex = { { 0 } }, \
.xTaskOwner = NULL, \
.xAttr = { .iType = 0 } \
} \
) \
)
#endif /* if posixconfigENABLE_PTHREAD_MUTEX_T == 1 */
#if posixconfigENABLE_PTHREAD_COND_T == 1
/**
* @brief Condition variable.
*/
typedef struct pthread_cond_internal
{
BaseType_t xIsInitialized; /**< Set to pdTRUE if this condition variable is initialized, pdFALSE otherwise. */
StaticSemaphore_t xCondWaitSemaphore; /**< Threads block on this semaphore in pthread_cond_wait. */
unsigned iWaitingThreads; /**< The number of threads currently waiting on this condition variable. */
} pthread_cond_internal_t;
/**
* @brief Compile-time initializer of pthread_cond_internal_t.
*/
#define FREERTOS_POSIX_COND_INITIALIZER \
( ( ( pthread_cond_internal_t ) \
{ \
.xIsInitialized = pdFALSE, \
.xCondWaitSemaphore = { { 0 } }, \
.iWaitingThreads = 0 \
} \
) \
)
#endif /* if posixconfigENABLE_PTHREAD_COND_T == 1 */
#if posixconfigENABLE_SEM_T == 1
/**
* @brief Semaphore type.
*/
typedef struct
{
StaticSemaphore_t xSemaphore; /**< FreeRTOS semaphore. */
int value; /**< POSIX semaphore count. */
} sem_internal_t;
#endif /* if posixconfigENABLE_SEM_T == 1 */
#if posixconfigENABLE_PTHREAD_BARRIER_T == 1
/**
* @brief Barrier object.
*/
typedef struct pthread_barrier_internal
{
unsigned uThreadCount; /**< Current number of threads that have entered barrier. */
unsigned uThreshold; /**< The count argument of pthread_barrier_init. */
StaticSemaphore_t xThreadCountSemaphore; /**< Prevents more than uThreshold threads from exiting pthread_barrier_wait at once. */
StaticEventGroup_t xBarrierEventGroup; /**< FreeRTOS event group that blocks to wait on threads entering barrier. */
} pthread_barrier_internal_t;
#endif /* if posixconfigENABLE_PTHREAD_BARRIER_T == 1 */
#endif /* _FREERTOS_POSIX_INTERNAL_H_ */
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