OSG的编译工具CMake 按照文档提示的步骤可编译OSG源代码-OSG build tool CMake documentation in accordance with the prompt steps to compile the source code for OSG

Linux: use cmake -DBUILT_32=ON .. to force 32-bit built, -DBUILT_64=ON for 64-bit-Queue - thread-safe - ability to define max number of elements - sort elements into queue - get in O(1), except when filtered (worst case O(n)) - put in O(1)