Method addExternalLibraryDirectory

fdbclient/MultiVersionTransaction.actor.cpp:2297–2316

}

void MultiVersionApi::addExternalLibraryDirectory(std::string path) {
	TraceEvent("AddingExternalClientDirectory").detail("Directory", path);
	std::vector<std::string> files = platform::listFiles(path, DYNAMIC_LIB_EXT);

	MutexHolder holder(lock);
	if (networkStartSetup) {
		throw invalid_option(); // SOMEDAY: it might be good to allow clients to be added after the network is setup
	}

	// external libraries always run on their own thread; ensure we allocate at least one thread to run this library.
	threadCount = std::max(threadCount, 1);

	for (auto filename : files) {
		std::string lib = abspath(joinPath(path, filename));
		if (externalClientDescriptions.count(filename) == 0) {
			TraceEvent("AddingExternalClient").detail("LibraryPath", filename);
			externalClientDescriptions.emplace(std::make_pair(filename, ClientDesc(lib, true, false)));
		}
	}
}
#if defined(__unixish__)
std::vector<std::pair<std::string, bool>> MultiVersionApi::copyExternalLibraryPerThread(std::string path) {
	ASSERT_GE(threadCount, 1);