process - Process abstraction
A zircon process is an instance of a program in the traditional sense: a set of instructions which will be executed by one or more threads, along with a collection of resources.
The process object is a container of the following resources:
In general, it is associated with code which it is executing until it is forcefully terminated or the program exits.
Processes are owned by jobs and allow an application that is composed by more than one process to be treated as a single entity, from the perspective of resource and permission limits, as well as lifetime control.
A process is created via zx_process_create() and its execution begins with
zx_process_start().
The process stops execution when:
- the last thread is terminated or exits
- the process calls
zx_process_exit() - the parent job terminates the process
- the parent job is destroyed
The call to zx_process_start() cannot be issued twice. New threads cannot
be added to a process that was started and then its last thread has exited.
- process_create - create a new process within a job
- process_read_memory - read from a process's address space
- process_start - cause a new process to start executing
- process_write_memory - write to a process's address space
- process_exit - exit the current process
- job_create - create a new job within a parent job
- vmar_map - Map memory into an address space range
- vmar_protect - Change permissions on an address space range
- vmar_unmap - Unmap memory from an address space range