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linux message queue update

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This commit is contained in:
Robin Müller 2020-09-22 15:47:29 +02:00
parent 74b9aef36b
commit cea748676e
2 changed files with 87 additions and 49 deletions
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100
osal/linux/MessageQueue.cpp
View File

@ -1,5 +1,6 @@
#include "../../serviceinterface/ServiceInterfaceStream.h"
#include "MessageQueue.h" #include "MessageQueue.h"
#include "../../serviceinterface/ServiceInterfaceStream.h"
#include "../../objectmanager/ObjectManagerIF.h"
#include <fstream> #include <fstream>
@ -9,9 +10,11 @@
#include <errno.h> #include <errno.h>
MessageQueue::MessageQueue(uint32_t messageDepth, size_t maxMessageSize): MessageQueue::MessageQueue(uint32_t messageDepth, size_t maxMessageSize):
id(MessageQueueIF::NO_QUEUE),lastPartner(MessageQueueIF::NO_QUEUE), id(MessageQueueIF::NO_QUEUE),lastPartner(MessageQueueIF::NO_QUEUE),
defaultDestination(MessageQueueIF::NO_QUEUE) { defaultDestination(MessageQueueIF::NO_QUEUE),
maxMessageSize(maxMessageSize) {
//debug << "MessageQueue::MessageQueue: Creating a queue" << std::endl; //debug << "MessageQueue::MessageQueue: Creating a queue" << std::endl;
mq_attr attributes; mq_attr attributes;
this->id = 0; this->id = 0;
@ -61,22 +64,27 @@ ReturnValue_t MessageQueue::handleError(mq_attr* attributes,
// Just an additional helpful printout :-) // Just an additional helpful printout :-)
if(std::ifstream("/proc/sys/fs/mqueue/msg_max",std::ios::in) >> if(std::ifstream("/proc/sys/fs/mqueue/msg_max",std::ios::in) >>
defaultMqMaxMsg and defaultMqMaxMsg < messageDepth) { defaultMqMaxMsg and defaultMqMaxMsg < messageDepth) {
// See: https://www.man7.org/linux/man-pages/man3/mq_open.3.html /*
// This happens if the msg_max value is not large enough See: https://www.man7.org/linux/man-pages/man3/mq_open.3.html
// It is ignored if the executable is run in privileged mode. This happens if the msg_max value is not large enough
// Run the unlockRealtime script or grant the mode manually by using: It is ignored if the executable is run in privileged mode.
// sudo setcap 'CAP_SYS_RESOURCE=+ep' <pathToBinary> Run the unlockRealtime script or grant the mode manually by using:
sudo setcap 'CAP_SYS_RESOURCE=+ep' <pathToBinary>
// Persistent solution for session: Persistent solution for session:
// echo <newMsgMax> | sudo tee /proc/sys/fs/mqueue/msg_max echo <newMsgMax> | sudo tee /proc/sys/fs/mqueue/msg_max
// Permanent solution: Permanent solution:
// sudo nano /etc/sysctl.conf sudo nano /etc/sysctl.conf
// Append at end: fs/mqueue/msg_max = <newMsgMaxLen> Append at end: fs/mqueue/msg_max = <newMsgMaxLen>
// Apply changes with: sudo sysctl -p Apply changes with: sudo sysctl -p
*/
sif::error << "MessageQueue::MessageQueue: Default MQ size " sif::error << "MessageQueue::MessageQueue: Default MQ size "
<< defaultMqMaxMsg << " is too small for requested size " << defaultMqMaxMsg << " is too small for requested size "
<< messageDepth << std::endl; << messageDepth << std::endl;
sif::error << "This error can be fixed by setting the maximum "
"allowed message size higher!" << std::endl;
} }
break; break;
} }
@ -118,15 +126,15 @@ ReturnValue_t MessageQueue::handleError(mq_attr* attributes,
} }
ReturnValue_t MessageQueue::sendMessage(MessageQueueId_t sendTo, ReturnValue_t MessageQueue::sendMessage(MessageQueueId_t sendTo,
MessageQueueMessage* message, bool ignoreFault) { MessageQueueMessageIF* message, bool ignoreFault) {
return sendMessageFrom(sendTo, message, this->getId(), false); return sendMessageFrom(sendTo, message, this->getId(), false);
} }
ReturnValue_t MessageQueue::sendToDefault(MessageQueueMessage* message) { ReturnValue_t MessageQueue::sendToDefault(MessageQueueMessageIF* message) {
return sendToDefaultFrom(message, this->getId()); return sendToDefaultFrom(message, this->getId());
} }
ReturnValue_t MessageQueue::reply(MessageQueueMessage* message) { ReturnValue_t MessageQueue::reply(MessageQueueMessageIF* message) {
if (this->lastPartner != 0) { if (this->lastPartner != 0) {
return sendMessageFrom(this->lastPartner, message, this->getId()); return sendMessageFrom(this->lastPartner, message, this->getId());
} else { } else {
@ -134,21 +142,34 @@ ReturnValue_t MessageQueue::reply(MessageQueueMessage* message) {
} }
} }
ReturnValue_t MessageQueue::receiveMessage(MessageQueueMessage* message, ReturnValue_t MessageQueue::receiveMessage(MessageQueueMessageIF* message,
MessageQueueId_t* receivedFrom) { MessageQueueId_t* receivedFrom) {
ReturnValue_t status = this->receiveMessage(message); ReturnValue_t status = this->receiveMessage(message);
*receivedFrom = this->lastPartner; *receivedFrom = this->lastPartner;
return status; return status;
} }
ReturnValue_t MessageQueue::receiveMessage(MessageQueueMessage* message) { ReturnValue_t MessageQueue::receiveMessage(MessageQueueMessageIF* message) {
if(message == nullptr) {
sif::error << "MessageQueue::receiveMessage: Message is "
"nullptr!" << std::endl;
return HasReturnvaluesIF::RETURN_FAILED;
}
if(message->getMaximumMessageSize() < maxMessageSize) {
sif::error << "MessageQueue::receiveMessage: Message size "
<< message->getMaximumMessageSize()
<< " too small to receive data!" << std::endl;
return HasReturnvaluesIF::RETURN_FAILED;
}
unsigned int messagePriority = 0; unsigned int messagePriority = 0;
int status = mq_receive(id,reinterpret_cast<char*>(message->getBuffer()), int status = mq_receive(id,reinterpret_cast<char*>(message->getBuffer()),
message->MAX_MESSAGE_SIZE,&messagePriority); message->getMaximumMessageSize(),&messagePriority);
if (status > 0) { if (status > 0) {
this->lastPartner = message->getSender(); this->lastPartner = message->getSender();
//Check size of incoming message. //Check size of incoming message.
if (message->messageSize < message->getMinimumMessageSize()) { if (message->getMessageSize() < message->getMinimumMessageSize()) {
return HasReturnvaluesIF::RETURN_FAILED; return HasReturnvaluesIF::RETURN_FAILED;
} }
return HasReturnvaluesIF::RETURN_OK; return HasReturnvaluesIF::RETURN_OK;
@ -158,7 +179,7 @@ ReturnValue_t MessageQueue::receiveMessage(MessageQueueMessage* message) {
} else { } else {
//No message was received. Keep lastPartner anyway, I might send //No message was received. Keep lastPartner anyway, I might send
//something later. But still, delete packet content. //something later. But still, delete packet content.
memset(message->getData(), 0, message->MAX_DATA_SIZE); memset(message->getData(), 0, message->getMaximumMessageSize());
switch(errno){ switch(errno){
case EAGAIN: case EAGAIN:
//O_NONBLOCK or MQ_NONBLOCK was set and there are no messages //O_NONBLOCK or MQ_NONBLOCK was set and there are no messages
@ -258,18 +279,19 @@ void MessageQueue::setDefaultDestination(MessageQueueId_t defaultDestination) {
this->defaultDestination = defaultDestination; this->defaultDestination = defaultDestination;
} }
ReturnValue_t MessageQueue::sendToDefaultFrom(MessageQueueMessageIF* message,
MessageQueueId_t sentFrom, bool ignoreFault) {
return sendMessageFrom(defaultDestination, message, sentFrom, ignoreFault);
}
ReturnValue_t MessageQueue::sendMessageFrom(MessageQueueId_t sendTo, ReturnValue_t MessageQueue::sendMessageFrom(MessageQueueId_t sendTo,
MessageQueueMessage* message, MessageQueueId_t sentFrom, MessageQueueMessageIF* message, MessageQueueId_t sentFrom,
bool ignoreFault) { bool ignoreFault) {
return sendMessageFromMessageQueue(sendTo,message, sentFrom,ignoreFault); return sendMessageFromMessageQueue(sendTo,message, sentFrom,ignoreFault);
} }
ReturnValue_t MessageQueue::sendToDefaultFrom(MessageQueueMessage* message,
MessageQueueId_t sentFrom, bool ignoreFault) {
return sendMessageFrom(defaultDestination, message, sentFrom, ignoreFault);
}
MessageQueueId_t MessageQueue::getDefaultDestination() const { MessageQueueId_t MessageQueue::getDefaultDestination() const {
return this->defaultDestination; return this->defaultDestination;
} }
@ -281,11 +303,18 @@ bool MessageQueue::isDefaultDestinationSet() const {
uint16_t MessageQueue::queueCounter = 0; uint16_t MessageQueue::queueCounter = 0;
ReturnValue_t MessageQueue::sendMessageFromMessageQueue(MessageQueueId_t sendTo, ReturnValue_t MessageQueue::sendMessageFromMessageQueue(MessageQueueId_t sendTo,
MessageQueueMessage *message, MessageQueueId_t sentFrom, MessageQueueMessageIF *message, MessageQueueId_t sentFrom,
bool ignoreFault) { bool ignoreFault) {
if(message == nullptr) {
sif::error << "MessageQueue::sendMessageFromMessageQueue: Message is "
"nullptr!" << std::endl;
return HasReturnvaluesIF::RETURN_FAILED;
}
message->setSender(sentFrom); message->setSender(sentFrom);
int result = mq_send(sendTo, int result = mq_send(sendTo,
reinterpret_cast<const char*>(message->getBuffer()), message->messageSize,0); reinterpret_cast<const char*>(message->getBuffer()),
message->getMessageSize(),0);
//TODO: Check if we're in ISR. //TODO: Check if we're in ISR.
if (result != 0) { if (result != 0) {
@ -303,13 +332,16 @@ ReturnValue_t MessageQueue::sendMessageFromMessageQueue(MessageQueueId_t sendTo,
//MQ_NONBLOCK flag was set in its attributes, and the //MQ_NONBLOCK flag was set in its attributes, and the
//specified queue is full. //specified queue is full.
return MessageQueueIF::FULL; return MessageQueueIF::FULL;
case EBADF: case EBADF: {
//mq_des doesn't represent a valid message queue descriptor, //mq_des doesn't represent a valid message queue descriptor,
//or mq_des wasn't opened for writing. //or mq_des wasn't opened for writing.
sif::error << "MessageQueue::sendMessage: Configuration error " sif::error << "MessageQueue::sendMessage: Configuration error, MQ"
<< strerror(errno) << " in mq_send mqSendTo: " << sendTo << " destination invalid." << std::endl;
<< " sent from " << sentFrom << std::endl; sif::error << strerror(errno) << " in "
/*NO BREAK*/ <<"mq_send to: " << sendTo << " sent from "
<< sentFrom << std::endl;
return DESTINVATION_INVALID;
}
case EINTR: case EINTR:
//The call was interrupted by a signal. //The call was interrupted by a signal.
case EINVAL: case EINVAL:

30
osal/linux/MessageQueue.h
View File

@ -1,5 +1,5 @@
#ifndef MESSAGEQUEUE_H_ #ifndef FSFW_OSAL_LINUX_MESSAGEQUEUE_H_
#define MESSAGEQUEUE_H_ #define FSFW_OSAL_LINUX_MESSAGEQUEUE_H_
#include "../../internalError/InternalErrorReporterIF.h" #include "../../internalError/InternalErrorReporterIF.h"
#include "../../ipc/MessageQueueIF.h" #include "../../ipc/MessageQueueIF.h"
@ -56,14 +56,14 @@ public:
* @param ignoreFault If set to true, the internal software fault counter is not incremented if queue is full. * @param ignoreFault If set to true, the internal software fault counter is not incremented if queue is full.
*/ */
virtual ReturnValue_t sendMessage(MessageQueueId_t sendTo, virtual ReturnValue_t sendMessage(MessageQueueId_t sendTo,
MessageQueueMessage* message, bool ignoreFault = false ); MessageQueueMessageIF* message, bool ignoreFault = false );
/** /**
* @brief This operation sends a message to the default destination. * @brief This operation sends a message to the default destination.
* @details As in the sendMessage method, this function uses the sendToDefault call of the * @details As in the sendMessage method, this function uses the sendToDefault call of the
* MessageQueueSender parent class and adds its queue id as "sentFrom" information. * MessageQueueSender parent class and adds its queue id as "sentFrom" information.
* @param message A pointer to a previously created message, which is sent. * @param message A pointer to a previously created message, which is sent.
*/ */
virtual ReturnValue_t sendToDefault( MessageQueueMessage* message ); virtual ReturnValue_t sendToDefault( MessageQueueMessageIF* message );
/** /**
* @brief This operation sends a message to the last communication partner. * @brief This operation sends a message to the last communication partner.
* @details This operation simplifies answering an incoming message by using the stored * @details This operation simplifies answering an incoming message by using the stored
@ -71,7 +71,7 @@ public:
* (i.e. lastPartner is zero), an error code is returned. * (i.e. lastPartner is zero), an error code is returned.
* @param message A pointer to a previously created message, which is sent. * @param message A pointer to a previously created message, which is sent.
*/ */
ReturnValue_t reply( MessageQueueMessage* message ); ReturnValue_t reply( MessageQueueMessageIF* message );
/** /**
* @brief This function reads available messages from the message queue and returns the sender. * @brief This function reads available messages from the message queue and returns the sender.
@ -80,7 +80,7 @@ public:
* @param message A pointer to a message in which the received data is stored. * @param message A pointer to a message in which the received data is stored.
* @param receivedFrom A pointer to a queue id in which the sender's id is stored. * @param receivedFrom A pointer to a queue id in which the sender's id is stored.
*/ */
ReturnValue_t receiveMessage(MessageQueueMessage* message, ReturnValue_t receiveMessage(MessageQueueMessageIF* message,
MessageQueueId_t *receivedFrom); MessageQueueId_t *receivedFrom);
/** /**
@ -91,7 +91,7 @@ public:
* message's content is cleared and the function returns immediately. * message's content is cleared and the function returns immediately.
* @param message A pointer to a message in which the received data is stored. * @param message A pointer to a message in which the received data is stored.
*/ */
ReturnValue_t receiveMessage(MessageQueueMessage* message); ReturnValue_t receiveMessage(MessageQueueMessageIF* message);
/** /**
* Deletes all pending messages in the queue. * Deletes all pending messages in the queue.
* @param count The number of flushed messages. * @param count The number of flushed messages.
@ -114,7 +114,9 @@ public:
* This variable is set to zero by default. * This variable is set to zero by default.
* \param ignoreFault If set to true, the internal software fault counter is not incremented if queue is full. * \param ignoreFault If set to true, the internal software fault counter is not incremented if queue is full.
*/ */
virtual ReturnValue_t sendMessageFrom( MessageQueueId_t sendTo, MessageQueueMessage* message, MessageQueueId_t sentFrom, bool ignoreFault = false ); virtual ReturnValue_t sendMessageFrom( MessageQueueId_t sendTo,
MessageQueueMessageIF* message, MessageQueueId_t sentFrom,
bool ignoreFault = false );
/** /**
* \brief The sendToDefault method sends a queue message to the default destination. * \brief The sendToDefault method sends a queue message to the default destination.
* \details In all other aspects, it works identical to the sendMessage method. * \details In all other aspects, it works identical to the sendMessage method.
@ -122,7 +124,8 @@ public:
* \param sentFrom The sentFrom information can be set to inject the sender's queue id into the message. * \param sentFrom The sentFrom information can be set to inject the sender's queue id into the message.
* This variable is set to zero by default. * This variable is set to zero by default.
*/ */
virtual ReturnValue_t sendToDefaultFrom( MessageQueueMessage* message, MessageQueueId_t sentFrom = NO_QUEUE, bool ignoreFault = false ); virtual ReturnValue_t sendToDefaultFrom( MessageQueueMessageIF* message,
MessageQueueId_t sentFrom = NO_QUEUE, bool ignoreFault = false );
/** /**
* \brief This method is a simple setter for the default destination. * \brief This method is a simple setter for the default destination.
*/ */
@ -145,7 +148,9 @@ protected:
* This variable is set to zero by default. * This variable is set to zero by default.
* \param ignoreFault If set to true, the internal software fault counter is not incremented if queue is full. * \param ignoreFault If set to true, the internal software fault counter is not incremented if queue is full.
*/ */
static ReturnValue_t sendMessageFromMessageQueue(MessageQueueId_t sendTo,MessageQueueMessage* message, MessageQueueId_t sentFrom = NO_QUEUE,bool ignoreFault=false); static ReturnValue_t sendMessageFromMessageQueue(MessageQueueId_t sendTo,
MessageQueueMessageIF* message, MessageQueueId_t sentFrom = NO_QUEUE,
bool ignoreFault=false);
private: private:
/** /**
* @brief The class stores the queue id it got assigned from the operating system in this attribute. * @brief The class stores the queue id it got assigned from the operating system in this attribute.
@ -171,11 +176,12 @@ private:
/** /**
* The name of the message queue, stored for unlinking * The name of the message queue, stored for unlinking
*/ */
char name[5]; char name[16];
static uint16_t queueCounter; static uint16_t queueCounter;
const size_t maxMessageSize;
ReturnValue_t handleError(mq_attr* attributes, uint32_t messageDepth); ReturnValue_t handleError(mq_attr* attributes, uint32_t messageDepth);
}; };
#endif /* MESSAGEQUEUE_H_ */ #endif /* FSFW_OSAL_LINUX_MESSAGEQUEUE_H_ */