kern
annotate src/proc.h @ 96:07fe6a614185
filesystem
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Thu, 15 Dec 2011 04:39:00 +0200 |
| parents | 7ff2b4971216 |
| children |
| 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@68 | 6 #include "rbtree.h" |
| nuclear@90 | 7 #include "file.h" |
| nuclear@42 | 8 |
| nuclear@42 | 9 #define MAX_PROC 128 |
| nuclear@90 | 10 #define MAX_FD 64 |
| nuclear@42 | 11 |
| nuclear@42 | 12 struct context { |
| nuclear@54 | 13 /*struct registers regs;*/ /* saved general purpose registers */ |
| nuclear@54 | 14 /*uint32_t instr_ptr;*/ /* saved eip */ |
| nuclear@47 | 15 uint32_t stack_ptr; /* saved esp */ |
| nuclear@54 | 16 /*uint32_t flags;*/ /* saved eflags */ |
| nuclear@47 | 17 uint32_t pgtbl_paddr; /* physical address of the page table */ |
| nuclear@42 | 18 /* TODO add FPU state */ |
| nuclear@42 | 19 }; |
| nuclear@42 | 20 |
| nuclear@51 | 21 enum proc_state { |
| nuclear@53 | 22 STATE_RUNNABLE, |
| nuclear@51 | 23 STATE_BLOCKED, |
| nuclear@51 | 24 STATE_ZOMBIE |
| nuclear@51 | 25 }; |
| nuclear@51 | 26 |
| nuclear@29 | 27 |
| nuclear@29 | 28 struct process { |
| nuclear@51 | 29 int id, parent; |
| nuclear@51 | 30 enum proc_state state; |
| nuclear@51 | 31 |
| nuclear@72 | 32 int exit_status; |
| nuclear@72 | 33 |
| nuclear@55 | 34 /* when blocked it's waiting for a wakeup on this address */ |
| nuclear@55 | 35 void *wait_addr; |
| nuclear@55 | 36 |
| nuclear@51 | 37 int ticks_left; |
| nuclear@52 | 38 |
| nuclear@68 | 39 /* process vm map */ |
| nuclear@68 | 40 struct rbtree vmmap; |
| nuclear@68 | 41 |
| nuclear@52 | 42 /* extends of the process heap, increased by sbrk */ |
| nuclear@52 | 43 |
| nuclear@52 | 44 /* first page of the user stack, extends up to KMEM_START */ |
| nuclear@54 | 45 int user_stack_pg; |
| nuclear@54 | 46 /* first page of the kernel stack, (KERN_STACK_SIZE) */ |
| nuclear@54 | 47 int kern_stack_pg; |
| nuclear@52 | 48 |
| nuclear@42 | 49 struct context ctx; |
| nuclear@51 | 50 |
| nuclear@90 | 51 /* open files */ |
| nuclear@90 | 52 struct file files[MAX_FD]; |
| nuclear@90 | 53 |
| nuclear@96 | 54 unsigned int umask; |
| nuclear@96 | 55 |
| nuclear@72 | 56 struct process *child_list; |
| nuclear@72 | 57 |
| nuclear@51 | 58 struct process *next, *prev; /* for the scheduler queues */ |
| nuclear@72 | 59 struct process *sib_next; /* for the sibling list */ |
| nuclear@29 | 60 }; |
| nuclear@29 | 61 |
| nuclear@47 | 62 void init_proc(void); |
| nuclear@47 | 63 |
| nuclear@72 | 64 int sys_fork(void); |
| nuclear@72 | 65 int sys_exit(int status); |
| nuclear@72 | 66 int sys_waitpid(int pid, int *status, int opt); |
| nuclear@57 | 67 |
| nuclear@47 | 68 void context_switch(int pid); |
| nuclear@47 | 69 |
| nuclear@56 | 70 void set_current_pid(int pid); |
| nuclear@51 | 71 int get_current_pid(void); |
| nuclear@51 | 72 struct process *get_current_proc(void); |
| nuclear@51 | 73 struct process *get_process(int pid); |
| nuclear@51 | 74 |
| nuclear@72 | 75 int sys_getpid(void); |
| nuclear@72 | 76 int sys_getppid(void); |
| nuclear@72 | 77 |
| nuclear@57 | 78 /* defined in proc-asm.S */ |
| nuclear@57 | 79 uint32_t get_instr_ptr(void); |
| nuclear@57 | 80 uint32_t get_caller_instr_ptr(void); |
| nuclear@57 | 81 void get_instr_stack_ptr(uint32_t *iptr, uint32_t *sptr); |
| nuclear@57 | 82 |
| nuclear@29 | 83 #endif /* PROC_H_ */ |