Method startSession

src/jrd/ProfilerManager.cpp:417–483

}

SINT64 ProfilerManager::startSession(thread_db* tdbb, Nullable<SLONG> flushInterval,
	const PathName& pluginName, const string& description, const string& options)
{
	if (flushInterval.isAssigned())
		checkFlushInterval(flushInterval.value);

	AutoSetRestore<bool> pauseProfiler(&paused, true);

	const auto attachment = tdbb->getAttachment();
	ThrowLocalStatus status;

	const auto timestamp = TimeZoneUtil::getCurrentTimeStamp(attachment->att_current_timezone);

	if (currentSession)
	{
		currentSession->pluginSession->finish(&status, timestamp);
		currentSession = nullptr;
	}

	auto pluginPtr = activePlugins.get(pluginName);

	AutoPlugin<IProfilerPlugin> plugin;

	if (pluginPtr)
	{
		(*pluginPtr)->addRef();
		plugin.reset(pluginPtr->get());
	}
	else
	{
		GetPlugins<IProfilerPlugin> plugins(IPluginManager::TYPE_PROFILER, pluginName.nullStr());

		if (!plugins.hasData())
		{
			string msg;
			msg.printf("Profiler plugin %s is not found", pluginName.c_str());
			(Arg::Gds(isc_random) << msg).raise();
		}

		plugin.reset(plugins.plugin());
		plugin->addRef();

		plugin->init(&status, attachment->getInterface(), (FB_UINT64) fb_utils::query_performance_frequency());

		plugin->addRef();
		activePlugins.put(pluginName)->reset(plugin.get());
	}

	AutoDispose<IProfilerSession> pluginSession = plugin->startSession(&status,
		description.c_str(),
		options.c_str(),
		timestamp);

	auto& pool = *tdbb->getAttachment()->att_pool;

	currentSession.reset(FB_NEW_POOL(pool) ProfilerManager::Session(pool));
	currentSession->pluginSession = std::move(pluginSession);
	currentSession->plugin = std::move(plugin);