refactor: decouple i386 specific instruction invocation

[lunaix-os.git] / lunaix-os / includes / lunaix / process.h

diff --git a/lunaix-os/includes/lunaix/process.h b/lunaix-os/includes/lunaix/process.h
index 9686ee074de99ec4fb88c1e4e42703d627d7c907..5371e833925ff529128411ba52f3bfd64dabc7c1 100644 (file)
--- a/lunaix-os/includes/lunaix/process.h
+++ b/lunaix-os/includes/lunaix/process.h
@@ -1,11 +1,12 @@
 #ifndef __LUNAIX_PROCESS_H
 #define __LUNAIX_PROCESS_H
 
-#include <arch/x86/interrupts.h>
+#include <arch/i386/interrupts.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>
@@ -14,37 +15,66 @@
 // 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
 
+/*
+    |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_BLOCKED 8
-#define PS_CREATED 16
+#define PS_PAUSED 8
+#define PS_BLOCKED 16
+#define PS_CREATED 32
 
-#define PROC_TERMINATED(state) (state & 0x6)
+#define PS_GrBP (PS_PAUSED | PS_BLOCKED)
+#define PS_GrDT (PS_TERMNAT | PS_DESTROY)
 
-#define PROC_FINPAUSE 1
+#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 proc_mm
+struct sigact
 {
-    heap_context_t u_heap;
-    struct mm_region regions;
+    struct sigact* prev;
+    sigset_t sa_mask;
+    void* sa_actor;
+    void* sa_handler;
+    pid_t sender;
 };
 
-struct proc_sig
+struct sighail
 {
-    void* signal_handler;
-    int sig_num;
-    isr_param prev_context;
+    sigset_t sig_pending;
+    sigset_t sig_mask;
+    struct sigact* inprogress;
+    struct sigact signals[_SIG_NUM];
 };
 
-#define PROC_SIG_SIZE sizeof(struct proc_sig) // size=84
+struct proc_sig
+{
+    int sig_num;
+    void* sigact;
+    void* sighand;
+    isr_param* saved_ictx;
+} __attribute__((packed));
 
 struct proc_info
 {
     /*
         Any change to *critical section*, including layout, size
-        must be reflected in kernel/asm/x86/interrupt.S to avoid
+        must be reflected in arch/i386/interrupt.S.inc to avoid
         disaster!
      */
 
@@ -52,12 +82,13 @@ struct proc_info
 
     pid_t pid;
     struct proc_info* parent;
-    isr_param intr_ctx; // size=76
-    uintptr_t ustack_top;
-    void* page_table;
+    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;
@@ -72,14 +103,10 @@ struct proc_info
 
     struct proc_mm mm;
     time_t created;
-    uint8_t state;
+    u8_t state;
     int32_t exit_code;
     int32_t k_status;
-    sigset_t sig_pending;
-    sigset_t sig_mask;
-    sigset_t sig_inprogress;
-    int flags;
-    void* sig_handler[_SIG_NUM];
+    struct sighail sigctx;
     struct v_fdtable* fdtable;
     struct v_dnode* cwd;
     pid_t pgid;
@@ -87,6 +114,24 @@ struct proc_info
 
 extern volatile struct proc_info* __current;
 
+static inline void
+block_current()
+{
+    __current->state = PS_BLOCKED;
+}
+
+static inline void
+pause_current()
+{
+    __current->state = PS_PAUSED;
+}
+
+static inline void
+resume_current()
+{
+    __current->state = PS_RUNNING;
+}
+
 /**
  * @brief 分配并初始化一个进程控制块
  *
@@ -115,7 +160,7 @@ pid_t
 destroy_process(pid_t pid);
 
 void
-setup_proc_mem(struct proc_info* proc, uintptr_t kstack_from);
+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）
@@ -144,4 +189,16 @@ orphaned_proc(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
+
+void
+proc_init_transfer(struct proc_info* proc, ptr_t stop, ptr_t target, int flags);
+
 #endif /* __LUNAIX_PROCESS_H */