Is load_ref_count_ no need to count number?

[daohu527]

There is a lock load_ref_lock and class_loader::impl::loadLibrary(getLibraryPath(), this) will not load .so library twice. Why not just use a bool is_loaded to load and unload the .so library.

I didn't see the benefits of counting times of the loadLibrary. The unloadLibrary will do nothing when load_ref_count_ > 0 too.

class_loader/src/class_loader.cpp

Lines 100 to 102 in a183b76

	boost::recursive_mutex::scoped_lock lock(load_ref_count_mutex_);
	load_ref_count_ = load_ref_count_ + 1;
	class_loader::impl::loadLibrary(getLibraryPath(), this);