libxshmfence: libxshmfence (The X Shared Memory Fence Library) libxshmfence: libxshmfence: libxshmfence is part of X11. libxshmfence: libxshmfence: For more information about the X.Org Foundation (the providers of the libxshmfence: X.Org implementation of the X Window System), see their website: libxshmfence: libxshmfence: http://www.x.org libxshmfence: libxshmfence: libxshmfence: