Process, thread?

• Confusion about the terms «process», «thread» and «task»

• In Unix, a process is created using fork() and is composed of

• An address space, which contains the program code, data, stack, shared libraries, etc.
• One thread, that starts executing the main() function.
• Upon creation, a process contains one thread

• Additional threads can be created inside an existing process, using pthread_create()

• They run in the same address space as the initial thread of the process
• They start executing a function passed as argument to pthread_create()