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#ifndef _WSX22_IPC_MESSAGEQUEUEBYSM
#define _WSX22_IPC_MESSAGEQUEUEBYSM
//message queue by shared memory related definitions
#define MQCONST_MQSM_TEXT_SIZEC 2042 //number of wchar_t chars in message - now used sharedmemory mode
#define MQTHREAD_TICK_TIME 100 // 100ms - check exit every this time
#define MQTHREAD_FIRSTRUN_TIME 0 // MQTHREAD_FIRSTRUN_TIME * MQTHREAD_TICK_TIME = 0s - time to first run of checking message queue in mq thread (after thread start)
#define MQTHREAD_NEXTRUN_TIME 1 // MQTHREAD_NEXTRUN_TIME * MQTHREAD_TICK_TIME = 0s - time to next run of checking message queue in mq thread
#include "MirFoxCommons_logger.h"
/**
* MessageQueue Utils
*
* based on Boost Shared Memory, beacouse boost message queue doesn't work between 32bit and 64bit processes (at boost 1.46)
*
* Singleton pattern based on
* http://www.codeproject.com/KB/threads/SingletonThreadSafety.aspx
*/
class MessageQueueUtils
{
public:
//constructor
MessageQueueUtils();
//destructor
~MessageQueueUtils();
std::string getMqName(uint16_t processId);
//return 0 if success, >0 if error
int createMessageQueue(std::string mqName);
void unloadMessageQueue(uint16_t unloadedMQProcessId);
//wchar_t*& - pointer by reference
bool tryReceiveMessage (char& menuItemType, char& userActionType, char& userButton, uint64_t& targetHandle, wchar_t*& userActionSelection, size_t uasBuffCSize);
void sendMessage(int clientRecordId, char menuItemType, char userActionType, char userButton, uint64_t targetHandle, std::wstring userActionSelection);
uint16_t volatile unloadedMQProcessId;
//static method that returns only instance of SharedMemoryUtils
static MessageQueueUtils * getInstance()
{
//initialized always from one thread at a time
if (m_pOnlyOneInstance == NULL) {
if (m_pOnlyOneInstance == NULL) {
m_pOnlyOneInstance = new MessageQueueUtils();
}
}
return m_pOnlyOneInstance;
}
private:
boost::interprocess::windows_shared_memory* volatile mqMirSm;
std::size_t getMqMirSmTotalSize();
//CRITICAL_SECTION smCs;
HANDLE smMutex;
//holds one and only object of MySingleton
static MessageQueueUtils * m_pOnlyOneInstance;
MFLogger* logger;
};
#endif //#ifndef _WSX22_IPC_MESSAGEQUEUEBYSM
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