나한나한나한나

프로세스

• state들로 구성된 context
• 그 context 안에서 수행되는 execution stream
  • execution stream을 다른 말로 하면 thread of control, 또는 thread
• Unit of resource ownership -> process 또는 task
• Unit of dispatching -> thread 또는 lightweight process

쓰레드

• has an execution state (running, ready, blocked)
  • saves thread context when not running
• has a runtime stack for local variables and some per-thread static memory
• has access to the memory address space and resource of its process
  • all threads of a process share these
  • when one thread alters a (non-private) memory item, all other threads (of the process) see that
  • a file opened by a thread is available to others

single threading vs multi threading