Critical Sections o Necessary to avoid race conditions: o 1.No two processes may be simultaneously inside their critical regions. o 2.No assumptions may be made about speeds or the number of CPUs. o 3.No process running outside its critical region may block other processes. o 4.No process should have to wait forever to enter its critical region. 14Critical Sections  Necessary to avoid race conditions:  1. No two processes may be simultaneously inside their critical regions.  2. No assumptions may be made about speeds or the number of CPUs.  3. No process running outside its critical region may block other processes.  4. No process should have to wait forever to enter its critical region. 14