kern: src/proc.h annotate

kern

llalallalala

author	John Tsiombikas <nuclear@member.fsf.org>
date	Mon, 08 Aug 2011 09:53:10 +0300
parents	fa65b4f45366
children	4eaecb14fe31

rev	line source
nuclear@29	1 #ifndef PROC_H_
nuclear@29	2 #define PROC_H_
nuclear@29	3
nuclear@43	4 #include <inttypes.h>
nuclear@42	5 #include "asmops.h"
nuclear@42	6
nuclear@42	7 #define MAX_PROC 128
nuclear@42	8
nuclear@42	9 struct context {
nuclear@47	10 struct registers regs; /* saved general purpose registers */
nuclear@47	11 uint32_t instr_ptr; /* saved eip */
nuclear@47	12 uint32_t stack_ptr; /* saved esp */
nuclear@47	13 uint32_t flags; /* saved eflags */
nuclear@47	14 uint32_t pgtbl_paddr; /* physical address of the page table */
nuclear@42	15 /* TODO add FPU state */
nuclear@42	16 };
nuclear@42	17
nuclear@51	18 enum proc_state {
nuclear@53	19 STATE_RUNNABLE,
nuclear@51	20 STATE_BLOCKED,
nuclear@51	21 STATE_ZOMBIE
nuclear@51	22 };
nuclear@51	23
nuclear@29	24
nuclear@29	25 struct process {
nuclear@51	26 int id, parent;
nuclear@51	27 enum proc_state state;
nuclear@51	28
nuclear@51	29 int ticks_left;
nuclear@52	30
nuclear@52	31 /* extends of the process heap, increased by sbrk */
nuclear@52	32
nuclear@52	33 /* first page of the user stack, extends up to KMEM_START */
nuclear@52	34 int stack_start_pg;
nuclear@52	35
nuclear@42	36 struct context ctx;
nuclear@51	37
nuclear@51	38 struct process next, prev; /* for the scheduler queues */
nuclear@29	39 };
nuclear@29	40
nuclear@47	41 void init_proc(void);
nuclear@47	42
nuclear@47	43 void context_switch(int pid);
nuclear@47	44
nuclear@51	45 int get_current_pid(void);
nuclear@51	46 struct process *get_current_proc(void);
nuclear@51	47 struct process *get_process(int pid);
nuclear@51	48
nuclear@29	49 #endif /* PROC_H_ */