128 lines
2.1 KiB
C
128 lines
2.1 KiB
C
#ifndef __KERNEL_PROCESS_H__
|
|
# define __KERNEL_PROCESS_H__
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <kernel/fs/file.h>
|
|
#include <kernel/fs/filesystem.h>
|
|
#include <kernel/context.h>
|
|
#include <kernel/util/types.h>
|
|
|
|
#define PROCESS_NB_OPEN_FILE (4)
|
|
#define PROCESS_USER_STACK_SIZE (2 * 1024)
|
|
#define PROCESS_KERNEL_STACK_SIZE (1024)
|
|
#define PROCESS_NAME_LENGHT (16)
|
|
#define PROCESS_MAX (4)
|
|
|
|
// define process struct.
|
|
//TODO: signal !
|
|
struct process
|
|
{
|
|
//---
|
|
// Used when interrupt or exception occur
|
|
//---
|
|
struct {
|
|
void *kernel;
|
|
void *user;
|
|
} stack;
|
|
|
|
|
|
//---
|
|
// Context management
|
|
//---
|
|
common_context_t context;
|
|
|
|
|
|
//---
|
|
// Shared (child / parent) data informations
|
|
//---
|
|
struct {
|
|
enum {
|
|
PROCESS_FILE_SLOT_UNUSED,
|
|
PROCESS_FILE_SLOT_USED
|
|
} status;
|
|
FILE file;
|
|
} opfile[PROCESS_NB_OPEN_FILE];
|
|
struct dentry *working_dir;
|
|
FILE tty;
|
|
|
|
|
|
//---
|
|
// Signals management.
|
|
//---
|
|
//sighandler_t signal[NSIG];
|
|
|
|
|
|
//---
|
|
// Virtual / Physical memory management.
|
|
//
|
|
// @note
|
|
// For now, we can not use the MMU so we just
|
|
// save all physical allocated space. This is an
|
|
// hardcode of each process memory management.
|
|
//---
|
|
struct {
|
|
struct {
|
|
void *user;
|
|
void *kernel;
|
|
struct {
|
|
size_t user;
|
|
size_t kernel;
|
|
} size;
|
|
} stack;
|
|
struct {
|
|
void *start;
|
|
size_t size;
|
|
} program;
|
|
struct {
|
|
void *start;
|
|
size_t size;
|
|
} exit;
|
|
} memory;
|
|
|
|
|
|
//---
|
|
// Other process management.
|
|
//---
|
|
struct process *parent;
|
|
struct process *sibling;
|
|
struct process *child;
|
|
|
|
|
|
//---
|
|
// Private data
|
|
//---
|
|
// Process ID
|
|
pid_t pid;
|
|
pid_t pgid;
|
|
|
|
// Indicate process status
|
|
enum {
|
|
PROC_INIT,
|
|
PROC_RUNNING,
|
|
PROC_SLEEP,
|
|
PROC_STOP,
|
|
PROC_ZOMBIE,
|
|
PROC_DEAD
|
|
} status;
|
|
|
|
// Used to by the _exit() syscall
|
|
uint32_t __stat_loc;
|
|
|
|
// Used by the allocator
|
|
struct process *next;
|
|
};
|
|
|
|
|
|
// Functions.
|
|
extern struct process *process_create(void);
|
|
extern int process_switch(pid_t pid);
|
|
|
|
|
|
// Internals
|
|
extern struct process *process_alloc(void);
|
|
extern struct process *process_get(pid_t pid);
|
|
extern int process_free(struct process *process);
|
|
|
|
#endif /*__KERNEL_PROCESS_H__*/
|