Method acquire

src/jrd/Monitoring.cpp:208–243

void MonitoringData::acquire()
{
	m_localMutex.enter(FB_FUNCTION);
	m_sharedMemory->mutexLock();

	// Reattach if someone has just deleted the shared file

	while (m_sharedMemory->getHeader()->isDeleted())
	{
		// Shared memory must be empty at this point
		fb_assert(m_sharedMemory->getHeader()->used == HEADER_SIZE);

		m_sharedMemory->mutexUnlock();
		m_sharedMemory.reset();

		Thread::yield();

		initSharedFile();
		m_sharedMemory->mutexLock();
	}

	if (m_sharedMemory->getHeader()->allocated > m_sharedMemory->sh_mem_length_mapped)
	{
#ifdef HAVE_OBJECT_MAP
		FbLocalStatus statusVector;
		if (!m_sharedMemory->remapFile(&statusVector, m_sharedMemory->getHeader()->allocated, false))
		{
			release();
			status_exception::raise(&statusVector);
		}
#else
		release();
		status_exception::raise(Arg::Gds(isc_montabexh));
#endif
	}
}


void MonitoringData::release()