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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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106
osal/linux/MessageQueue.cpp
View File

@ -1,5 +1,6 @@
#include "../../serviceinterface/ServiceInterfaceStream.h"
#include "MessageQueue.h"
#include "../../serviceinterface/ServiceInterfaceStream.h"
#include "../../objectmanager/ObjectManagerIF.h"
#include <fstream>
@ -9,9 +10,11 @@
#include <errno.h>
MessageQueue::MessageQueue(uint32_t messageDepth, size_t maxMessageSize):
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;
mq_attr attributes;
this->id = 0;
@ -46,7 +49,7 @@ MessageQueue::~MessageQueue() {
status = mq_unlink(name);
if(status != 0){
sif::error << "MessageQueue::Destructor: mq_unlink Failed with status: "
<< strerror(errno) <<std::endl;
<< strerror(errno) << std::endl;
}
}
@ -61,22 +64,27 @@ ReturnValue_t MessageQueue::handleError(mq_attr* attributes,
// Just an additional helpful printout :-)
if(std::ifstream("/proc/sys/fs/mqueue/msg_max",std::ios::in) >>
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
// It is ignored if the executable is run in privileged mode.
// Run the unlockRealtime script or grant the mode manually by using:
// sudo setcap 'CAP_SYS_RESOURCE=+ep' <pathToBinary>
/*
See: https://www.man7.org/linux/man-pages/man3/mq_open.3.html
This happens if the msg_max value is not large enough
It is ignored if the executable is run in privileged mode.
Run the unlockRealtime script or grant the mode manually by using:
sudo setcap 'CAP_SYS_RESOURCE=+ep' <pathToBinary>
// Persistent solution for session:
// echo <newMsgMax> | sudo tee /proc/sys/fs/mqueue/msg_max
Persistent solution for session:
echo <newMsgMax> | sudo tee /proc/sys/fs/mqueue/msg_max
// Permanent solution:
// sudo nano /etc/sysctl.conf
// Append at end: fs/mqueue/msg_max = <newMsgMaxLen>
// Apply changes with: sudo sysctl -p
Permanent solution:
sudo nano /etc/sysctl.conf
Append at end: fs/mqueue/msg_max = <newMsgMaxLen>
Apply changes with: sudo sysctl -p
*/
sif::error << "MessageQueue::MessageQueue: Default MQ size "
<< defaultMqMaxMsg << " is too small for requested size "
<< messageDepth << std::endl;
sif::error << "This error can be fixed by setting the maximum "
"allowed message size higher!" << std::endl;
}
break;
}
@ -118,15 +126,15 @@ ReturnValue_t MessageQueue::handleError(mq_attr* attributes,
}
ReturnValue_t MessageQueue::sendMessage(MessageQueueId_t sendTo,
MessageQueueMessage* message, bool ignoreFault) {
MessageQueueMessageIF* message, bool ignoreFault) {
return sendMessageFrom(sendTo, message, this->getId(), false);
}
ReturnValue_t MessageQueue::sendToDefault(MessageQueueMessage* message) {
ReturnValue_t MessageQueue::sendToDefault(MessageQueueMessageIF* message) {
return sendToDefaultFrom(message, this->getId());
}
ReturnValue_t MessageQueue::reply(MessageQueueMessage* message) {
ReturnValue_t MessageQueue::reply(MessageQueueMessageIF* message) {
if (this->lastPartner != 0) {
return sendMessageFrom(this->lastPartner, message, this->getId());
} 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) {
ReturnValue_t status = this->receiveMessage(message);
*receivedFrom = this->lastPartner;
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;
int status = mq_receive(id,reinterpret_cast<char*>(message->getBuffer()),
message->MAX_MESSAGE_SIZE,&messagePriority);
message->getMaximumMessageSize(),&messagePriority);
if (status > 0) {
this->lastPartner = message->getSender();
//Check size of incoming message.
if (message->messageSize < message->getMinimumMessageSize()) {
if (message->getMessageSize() < message->getMinimumMessageSize()) {
return HasReturnvaluesIF::RETURN_FAILED;
}
return HasReturnvaluesIF::RETURN_OK;
@ -158,7 +179,7 @@ ReturnValue_t MessageQueue::receiveMessage(MessageQueueMessage* message) {
} else {
//No message was received. Keep lastPartner anyway, I might send
//something later. But still, delete packet content.
memset(message->getData(), 0, message->MAX_DATA_SIZE);
memset(message->getData(), 0, message->getMaximumMessageSize());
switch(errno){
case EAGAIN:
//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;
}
ReturnValue_t MessageQueue::sendMessageFrom(MessageQueueId_t sendTo,
MessageQueueMessage* message, MessageQueueId_t sentFrom,
bool ignoreFault) {
return sendMessageFromMessageQueue(sendTo,message,sentFrom,ignoreFault);
}
ReturnValue_t MessageQueue::sendToDefaultFrom(MessageQueueMessage* message,
ReturnValue_t MessageQueue::sendToDefaultFrom(MessageQueueMessageIF* message,
MessageQueueId_t sentFrom, bool ignoreFault) {
return sendMessageFrom(defaultDestination, message, sentFrom, ignoreFault);
}
ReturnValue_t MessageQueue::sendMessageFrom(MessageQueueId_t sendTo,
MessageQueueMessageIF* message, MessageQueueId_t sentFrom,
bool ignoreFault) {
return sendMessageFromMessageQueue(sendTo,message, sentFrom,ignoreFault);
}
MessageQueueId_t MessageQueue::getDefaultDestination() const {
return this->defaultDestination;
}
@ -281,11 +303,18 @@ bool MessageQueue::isDefaultDestinationSet() const {
uint16_t MessageQueue::queueCounter = 0;
ReturnValue_t MessageQueue::sendMessageFromMessageQueue(MessageQueueId_t sendTo,
MessageQueueMessage *message, MessageQueueId_t sentFrom,
MessageQueueMessageIF *message, MessageQueueId_t sentFrom,
bool ignoreFault) {
if(message == nullptr) {
sif::error << "MessageQueue::sendMessageFromMessageQueue: Message is "
"nullptr!" << std::endl;
return HasReturnvaluesIF::RETURN_FAILED;
}
message->setSender(sentFrom);
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.
if (result != 0) {
@ -303,13 +332,16 @@ ReturnValue_t MessageQueue::sendMessageFromMessageQueue(MessageQueueId_t sendTo,
//MQ_NONBLOCK flag was set in its attributes, and the
//specified queue is full.
return MessageQueueIF::FULL;
case EBADF:
case EBADF: {
//mq_des doesn't represent a valid message queue descriptor,
//or mq_des wasn't opened for writing.
sif::error << "MessageQueue::sendMessage: Configuration error "
<< strerror(errno) << " in mq_send mqSendTo: " << sendTo
<< " sent from " << sentFrom << std::endl;
/*NO BREAK*/
sif::error << "MessageQueue::sendMessage: Configuration error, MQ"
<< " destination invalid." << std::endl;
sif::error << strerror(errno) << " in "
<<"mq_send to: " << sendTo << " sent from "
<< sentFrom << std::endl;
return DESTINVATION_INVALID;
}
case EINTR:
//The call was interrupted by a signal.
case EINVAL:

30
osal/linux/MessageQueue.h
View File

@ -1,5 +1,5 @@
#ifndef MESSAGEQUEUE_H_
#define MESSAGEQUEUE_H_
#ifndef FSFW_OSAL_LINUX_MESSAGEQUEUE_H_
#define FSFW_OSAL_LINUX_MESSAGEQUEUE_H_
#include "../../internalError/InternalErrorReporterIF.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.
*/
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.
* @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.
* @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.
* @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.
* @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.
@ -80,7 +80,7 @@ public:
* @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.
*/
ReturnValue_t receiveMessage(MessageQueueMessage* message,
ReturnValue_t receiveMessage(MessageQueueMessageIF* message,
MessageQueueId_t *receivedFrom);
/**
@ -91,7 +91,7 @@ public:
* message's content is cleared and the function returns immediately.
* @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.
* @param count The number of flushed messages.
@ -114,7 +114,9 @@ public:
* 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.
*/
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.
* \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.
* 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.
*/
@ -145,7 +148,9 @@ protected:
* 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.
*/
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:
/**
* @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
*/
char name[5];
char name[16];
static uint16_t queueCounter;
const size_t maxMessageSize;
ReturnValue_t handleError(mq_attr* attributes, uint32_t messageDepth);
};
#endif /* MESSAGEQUEUE_H_ */
#endif /* FSFW_OSAL_LINUX_MESSAGEQUEUE_H_ */