#ifndef __LUNAIX_PROCESS_H
#define __LUNAIX_PROCESS_H
-#include <stdint.h>
-#include <arch/x86/interrupts.h>
-#include <lunaix/mm/mm.h>
-#include <lunaix/types.h>
#include <lunaix/clock.h>
+#include <lunaix/ds/waitq.h>
+#include <lunaix/fs.h>
+#include <lunaix/mm/mm.h>
+#include <lunaix/mm/region.h>
+#include <lunaix/signal.h>
#include <lunaix/timer.h>
+#include <lunaix/types.h>
+#include <stdint.h>
+#include <sys/interrupts.h>
// 虽然内核不是进程，但为了区分，这里使用Pid=-1来指代内核。这主要是方便物理页所有权检查。
#define KERNEL_PID -1
-#define PROC_STOPPED 0
-#define PROC_RUNNING 1
-#define PROC_TERMNAT 2
-#define PROC_DESTROY 4
-#define PROC_BLOCKED 8
-#define PROC_CREATED 16
+/*
+ |C|Bk|De|Tn|Pu|Rn|
+ \----/
+ Dt
+
+ Group Dt: whether this process is terminated.
+
+ Rn: Running
+ Tn: Terminated
+ De: Destoryed
+ Pu: Paused
+ Bk: Blocked
+ C : Created
+*/
+
+#define PS_READY 0
+#define PS_RUNNING 1
+#define PS_TERMNAT 2
+#define PS_DESTROY 4
+#define PS_PAUSED 8
+#define PS_BLOCKED 16
+#define PS_CREATED 32
+
+#define PS_GrBP (PS_PAUSED | PS_BLOCKED)
+#define PS_GrDT (PS_TERMNAT | PS_DESTROY)
+
+#define proc_terminated(proc) (((proc)->state) & PS_GrDT)
+#define proc_hanged(proc) (((proc)->state) & PS_BLOCKED)
+#define proc_runnable(proc) (((proc)->state) & PS_PAUSED)
+
+struct sigact
+{
+ struct sigact* prev;
+ sigset_t sa_mask;
+ void* sa_actor;
+ void* sa_handler;
+ pid_t sender;
+};
-#define PROC_TERMMASK 0x6
+struct sighail
+{
+ sigset_t sig_pending;
+ sigset_t sig_mask;
+ struct sigact* inprogress;
+ struct sigact signals[_SIG_NUM];
+};
+struct proc_sig
+{
+ int sig_num;
+ void* sigact;
+ void* sighand;
+ isr_param* saved_ictx;
+} __attribute__((packed));
-struct proc_mm {
- heap_context_t u_heap;
- struct mm_region* regions;
-};
+struct proc_info
+{
+ /*
+ Any change to *critical section*, including layout, size
+ must be reflected in arch/i386/interrupt.S.inc to avoid
+ disaster!
+ */
+
+ /* ---- critical section start ---- */
-struct proc_info {
pid_t pid;
struct proc_info* parent;
- isr_param intr_ctx;
+ isr_param* intr_ctx;
+ ptr_t ustack_top;
+ ptr_t page_table;
+
+ /* ---- critical section end ---- */
+
+ struct llist_header tasks;
struct llist_header siblings;
struct llist_header children;
+ struct llist_header grp_member;
+ waitq_t waitqueue;
+
+ struct
+ {
+ struct llist_header sleepers;
+ time_t wakeup_time;
+ time_t alarm_time;
+ } sleep;
+
struct proc_mm mm;
- void* page_table;
time_t created;
- uint8_t state;
+ u8_t state;
int32_t exit_code;
int32_t k_status;
- struct lx_timer* timer;
+ struct sighail sigctx;
+ struct v_fdtable* fdtable;
+ struct v_dnode* cwd;
+ pid_t pgid;
};
extern volatile struct proc_info* __current;
+static inline void
+block_current()
+{
+ __current->state = PS_BLOCKED;
+}
+
+static inline void
+pause_current()
+{
+ __current->state = PS_PAUSED;
+}
-pid_t alloc_pid();
+static inline void
+resume_current()
+{
+ __current->state = PS_RUNNING;
+}
-void init_proc(struct proc_info *pcb);
+/**
+ * @brief 分配并初始化一个进程控制块
+ *
+ * @return struct proc_info*
+ */
+struct proc_info*
+alloc_process();
+
+/**
+ * @brief 初始化进程用户空间
+ *
+ * @param pcb
+ */
+void
+init_proc_user_space(struct proc_info* pcb);
/**
* @brief 向系统发布一个进程，使其可以被调度。
- *
- * @param process
+ *
+ * @param process
*/
-void push_process(struct proc_info* process);
+void
+commit_process(struct proc_info* process);
-pid_t destroy_process(pid_t pid);
+pid_t
+destroy_process(pid_t pid);
-void setup_proc_mem(struct proc_info* proc, uintptr_t kstack_from);
+void
+copy_kernel_stack(struct proc_info* proc, ptr_t kstack_from);
/**
* @brief 复制当前进程（LunaixOS的类 fork (unix) 实现）
- *
+ *
*/
-pid_t dup_proc();
+pid_t
+dup_proc();
/**
* @brief 创建新进程（LunaixOS的类 CreateProcess (Windows) 实现）
- *
+ *
*/
-void new_proc();
+void
+new_proc();
/**
* @brief 终止（退出）当前进程
- *
+ *
*/
-void terminate_proc(int exit_code);
+void
+terminate_proc(int exit_code);
-int orphaned_proc(pid_t pid);
+int
+orphaned_proc(pid_t pid);
-struct proc_info* get_process(pid_t pid);
+struct proc_info*
+get_process(pid_t pid);
+
+void
+proc_setsignal(struct proc_info* proc, int signum);
+
+void
+proc_clear_signal(struct proc_info* proc);
+
+// enable interrupt upon transfer
+#define TRANSFER_IE 1
+
+/**
+ * @brief Setup process initial context, used to initiate first switch
+ *
+ * @param proc
+ * @param stop
+ * @param target
+ * @param flags
+ */
+void
+proc_init_transfer(struct proc_info* proc, ptr_t stop, ptr_t target, int flags);
#endif /* __LUNAIX_PROCESS_H */
git://scm.lunaixsky.com / lunaix-os.git / blobdiff