Persistence

摘要： Let's say we wanted to run a program that created two threads, each of which was doingsome independently work, in this case printing "A" or "B". The c... 阅读全文

摘要： Processes are dynamic entities whose lifetimes range from a few milliseconds to months. Thus, thekernel must be able to handle many processes at the s... 阅读全文

摘要： As a general rule, each execution context that can be independently scheduled must have its ownprocess descriptor; therefore, even lightweight process... 阅读全文

摘要： The concept of a process is fundamental to any multiprogramming operating system. A processis usually defined as an instance of a program in execution... 阅读全文