iot_mqtt_static_memory.c File Reference

Implementation of MQTT static memory functions. More...

#include "iot_config.h"
#include <stddef.h>
#include <string.h>
#include "iot_static_memory.h"
#include "private/iot_mqtt_internal.h"

Macros
#define	MQTT_SUBSCRIPTION_SIZE   ( sizeof( _mqttSubscription_t ) + AWS_IOT_MQTT_SERVER_MAX_TOPIC_LENGTH )
	The size of a static memory MQTT subscription. More...

Functions
void *	IotMqtt_MallocConnection (size_t size)
	Allocate an _mqttConnection_t. This function should have the same signature as malloc.
void	IotMqtt_FreeConnection (void *ptr)
	Free an _mqttConnection_t. This function should have the same signature as free.
void *	IotMqtt_MallocOperation (size_t size)
	Allocate an _mqttOperation_t. This function should have the same signature as malloc.
void	IotMqtt_FreeOperation (void *ptr)
	Free an _mqttOperation_t. This function should have the same signature as free.
void *	IotMqtt_MallocSubscription (size_t size)
	Allocate an _mqttSubscription_t. This function should have the same signature as malloc.
void	IotMqtt_FreeSubscription (void *ptr)
	Free an _mqttSubscription_t. This function should have the same signature as free.

Variables
static uint32_t	_pInUseMqttConnections [IOT_MQTT_CONNECTIONS]
	MQTT connection in-use flags.
static _mqttConnection_t	_pMqttConnections [IOT_MQTT_CONNECTIONS]
	MQTT connections.
static uint32_t	_pInUseMqttOperations [IOT_MQTT_MAX_IN_PROGRESS_OPERATIONS]
	MQTT operation in-use flags.
static _mqttOperation_t	_pMqttOperations [IOT_MQTT_MAX_IN_PROGRESS_OPERATIONS]
	MQTT operations.
static uint32_t	_pInUseMqttSubscriptions [IOT_MQTT_SUBSCRIPTIONS]
	MQTT subscription in-use flags.
static char	_pMqttSubscriptions [IOT_MQTT_SUBSCRIPTIONS][MQTT_SUBSCRIPTION_SIZE]
	MQTT subscriptions.

Detailed Description

Implementation of MQTT static memory functions.

Macro Definition Documentation

MQTT_SUBSCRIPTION_SIZE

#define MQTT_SUBSCRIPTION_SIZE   ( sizeof( _mqttSubscription_t ) + AWS_IOT_MQTT_SERVER_MAX_TOPIC_LENGTH )

The size of a static memory MQTT subscription.

Since the pTopic member of _mqttSubscription_t is variable-length, the constant AWS_IOT_MQTT_SERVER_MAX_TOPIC_LENGTH is used for the length of _mqttSubscription_t.pTopicFilter.