Operating Systems Process Hierarchies c Parent creates a child process, child processes can create its own process, forms a hierarchy(层次关系) H UNIX calls this a " process group Windows has no concept of process hierarchy H all processes are created equal Gao Haichang, Software School, Xidian UniversityOperating Systems Gao Haichang , Software School, Xidian University 11 Process Hierarchies  Parent creates a child process, child processes can create its own process, forms a hierarchy （层次关系）  UNIX calls this a “process group”  Windows has no concept of process hierarchy  all processes are created equal