Function get

src/common/isc_sync.cpp:280–311

public:
	static SharedFileInfo* get(const char* fileName)
	{
		DevNode id(getNode(fileName));

		MutexLockGuard g(sharedFilesMutex, FB_FUNCTION);

		SharedFileInfo* file = nullptr;
		if (id.f_ino)
		{
			SharedFileInfo** got = sharedFiles->get(id);
			if (got)
			{
				file = *got;
				DEB_FLOCK("'%s': in map %p\n", fileName, file);
				file->assertNonZero();
			}
		}

		if (!file)
		{
			int fd = os_utils::openCreateSharedFile(fileName, 0);
			id = getNode(fd);
			file = FB_NEW_POOL(*getDefaultMemoryPool()) SharedFileInfo(fd, id);
			SharedFileInfo** put = sharedFiles->put(id);
			fb_assert(put);
			*put = file;
			DEB_FLOCK("'%s': new %p\n", fileName, file);
		}

		file->addRef();
		return file;
	}

	int release() const override
	{