process Struct Reference

A single process. More...

#include <process.h>

Data Fields
char	name [PROCESS_NAME_MAX_LEN]
pid_t	pid
struct address_space *	as
llist_t	threads
llist_t	children
size_t	refcount
struct file *	files [PROCESS_FD_COUNT]
	Open file descriptors table. More...
spinlock_t	files_lock
struct user_creds	creds
	Transmitted to the parent process during wait()
spinlock_t	lock
	Process credentials.

Detailed Description

The struct contains information about the process, including its name, unique ID and resources context (address space, file descriptors, ...). It also contains a list of all the process's active threads.

Field Documentation

as

struct address_space* process::as

The process's address space

children

llist_t process::children

Linked list of the process' active children

files

struct file* process::files[PROCESS_FD_COUNT]

This table is lock protected by files_lock, one must always take this lock when accessing a process' open files (read AND write).

files_lock

spinlock_t process::files_lock

Lock for open_files

name

char process::name[PROCESS_NAME_MAX_LEN]

The thread's name

pid

pid_t process::pid

Process' unique ID

refcount

size_t process::refcount

Reference count to this process. We only kill a process once all of its threads have been released.

threads

llist_t process::threads

Linked list of the process' active threads

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The documentation for this struct was generated from the following file:

• include/kernel/process.h