Non puoi selezionare più di 25 argomenti
Gli argomenti devono iniziare con una lettera o un numero, possono includere trattini ('-') e possono essere lunghi fino a 35 caratteri.
100 righe
4.3 KiB
100 righe
4.3 KiB
#ifndef __KERN_PROCESS_PROC_H__
|
|
#define __KERN_PROCESS_PROC_H__
|
|
|
|
#include <defs.h>
|
|
#include <list.h>
|
|
#include <trap.h>
|
|
#include <memlayout.h>
|
|
#include <skew_heap.h>
|
|
|
|
|
|
// process's state in his life cycle
|
|
enum proc_state {
|
|
PROC_UNINIT = 0, // uninitialized
|
|
PROC_SLEEPING, // sleeping
|
|
PROC_RUNNABLE, // runnable(maybe running)
|
|
PROC_ZOMBIE, // almost dead, and wait parent proc to reclaim his resource
|
|
};
|
|
|
|
// Saved registers for kernel context switches.
|
|
// Don't need to save all the %fs etc. segment registers,
|
|
// because they are constant across kernel contexts.
|
|
// Save all the regular registers so we don't need to care
|
|
// which are caller save, but not the return register %eax.
|
|
// (Not saving %eax just simplifies the switching code.)
|
|
// The layout of context must match code in switch.S.
|
|
struct context {
|
|
uint32_t eip;
|
|
uint32_t esp;
|
|
uint32_t ebx;
|
|
uint32_t ecx;
|
|
uint32_t edx;
|
|
uint32_t esi;
|
|
uint32_t edi;
|
|
uint32_t ebp;
|
|
};
|
|
|
|
#define PROC_NAME_LEN 50
|
|
#define MAX_PROCESS 4096
|
|
#define MAX_PID (MAX_PROCESS * 2)
|
|
|
|
extern list_entry_t proc_list;
|
|
|
|
struct proc_struct {
|
|
enum proc_state state; // Process state
|
|
int pid; // Process ID
|
|
int runs; // the running times of Proces
|
|
uintptr_t kstack; // Process kernel stack
|
|
volatile bool need_resched; // bool value: need to be rescheduled to release CPU?
|
|
struct proc_struct *parent; // the parent process
|
|
struct mm_struct *mm; // Process's memory management field
|
|
struct context context; // Switch here to run process
|
|
struct trapframe *tf; // Trap frame for current interrupt
|
|
uintptr_t cr3; // CR3 register: the base addr of Page Directroy Table(PDT)
|
|
uint32_t flags; // Process flag
|
|
char name[PROC_NAME_LEN + 1]; // Process name
|
|
list_entry_t list_link; // Process link list
|
|
list_entry_t hash_link; // Process hash list
|
|
int exit_code; // exit code (be sent to parent proc)
|
|
uint32_t wait_state; // waiting state
|
|
struct proc_struct *cptr, *yptr, *optr; // relations between processes
|
|
struct run_queue *rq; // running queue contains Process
|
|
list_entry_t run_link; // the entry linked in run queue
|
|
int time_slice; // time slice for occupying the CPU
|
|
skew_heap_entry_t lab6_run_pool; // FOR LAB6 ONLY: the entry in the run pool
|
|
uint32_t lab6_stride; // FOR LAB6 ONLY: the current stride of the process
|
|
uint32_t lab6_priority; // FOR LAB6 ONLY: the priority of process, set by lab6_set_priority(uint32_t)
|
|
};
|
|
|
|
#define PF_EXITING 0x00000001 // getting shutdown
|
|
|
|
#define WT_INTERRUPTED 0x80000000 // the wait state could be interrupted
|
|
#define WT_CHILD (0x00000001 | WT_INTERRUPTED) // wait child process
|
|
#define WT_KSEM 0x00000100 // wait kernel semaphore
|
|
#define WT_TIMER (0x00000002 | WT_INTERRUPTED) // wait timer
|
|
|
|
#define le2proc(le, member) \
|
|
to_struct((le), struct proc_struct, member)
|
|
|
|
extern struct proc_struct *idleproc, *initproc, *current;
|
|
|
|
void proc_init(void);
|
|
void proc_run(struct proc_struct *proc);
|
|
int kernel_thread(int (*fn)(void *), void *arg, uint32_t clone_flags);
|
|
|
|
char *set_proc_name(struct proc_struct *proc, const char *name);
|
|
char *get_proc_name(struct proc_struct *proc);
|
|
void cpu_idle(void) __attribute__((noreturn));
|
|
|
|
struct proc_struct *find_proc(int pid);
|
|
int do_fork(uint32_t clone_flags, uintptr_t stack, struct trapframe *tf);
|
|
int do_exit(int error_code);
|
|
int do_yield(void);
|
|
int do_execve(const char *name, size_t len, unsigned char *binary, size_t size);
|
|
int do_wait(int pid, int *code_store);
|
|
int do_kill(int pid);
|
|
//FOR LAB6, set the process's priority (bigger value will get more CPU time)
|
|
void lab6_set_priority(uint32_t priority);
|
|
int do_sleep(unsigned int time);
|
|
#endif /* !__KERN_PROCESS_PROC_H__ */
|
|
|