Kernel/include/threads.h

   1 /*
   2  */
   3 #ifndef _THREADS_H_
   4 #define _THREADS_H_
   5
   6 #include <arch.h>
   7 #include <signal.h>
   8 #include <proc.h>
   9
  10 typedef struct sMessage
  11 {
  12         struct sMessage *Next;
  13         Uint    Source;
  14         Uint    Length;
  15         Uint8   Data[];
  16 } tMsg; // sizeof = 12+
  17
  18 typedef struct sThread
  19 {
  20         // --- threads.c's
  21         //  0
  22         struct sThread  *Next;  //!< Next thread in list
  23         tSpinlock       IsLocked;       //!< Thread's spinlock
  24         volatile int    Status;         //!< Thread Status
  25          int    RetStatus;      //!< Return Status
  26
  27         // 16
  28         Uint    TID;    //!< Thread ID
  29         Uint    TGID;   //!< Thread Group (Process)
  30         Uint    PTID;   //!< Parent Thread ID
  31         Uint    UID, GID;       //!< User and Group
  32         char    *ThreadName;    //!< Name of thread
  33
  34         // --- arch/proc.c's responsibility
  35         // 40
  36         //! Kernel Stack Base
  37         tVAddr  KernelStack;
  38
  39         // 44 (x86)
  40         //! Memory Manager State
  41         tMemoryState    MemState;
  42
  43         // 48 (x86)
  44         //! State on task switch
  45         tTaskState      SavedState;
  46
  47         // --- threads.c's
  48         // 60
  49          int    CurFaultNum;    //!< Current fault number, 0: none
  50         tVAddr  FaultHandler;   //!< Fault Handler
  51
  52         tMsg * volatile Messages;       //!< Message Queue
  53         tMsg    *LastMessage;   //!< Last Message (speeds up insertion)
  54
  55          int    Quantum, Remaining;     //!< Quantum Size and remaining timesteps
  56          int    NumTickets;     //!< Priority - Chance of gaining CPU
  57
  58         Uint    Config[NUM_CFG_ENTRIES];        //!< Per-process configuration
  59 } tThread;
  60
  61
  62 enum {
  63         THREAD_STAT_NULL,
  64         THREAD_STAT_ACTIVE,
  65         THREAD_STAT_SLEEPING,
  66         THREAD_STAT_WAITING,
  67         THREAD_STAT_ZOMBIE,
  68         THREAD_STAT_DEAD
  69 };
  70
  71 enum eFaultNumbers
  72 {
  73         FAULT_MISC,
  74         FAULT_PAGE,
  75         FAULT_ACCESS,
  76         FAULT_DIV0,
  77         FAULT_OPCODE,
  78         FAULT_FLOAT
  79 };
  80
  81 #define GETMSG_IGNORE   ((void*)-1)
  82
  83 // === FUNCTIONS ===
  84 extern tThread  *Proc_GetCurThread(void);
  85 extern tThread  *Threads_GetThread(Uint TID);
  86 extern void     Threads_Wake(tThread *Thread);
  87 extern void     Threads_AddActive(tThread *Thread);
  88
  89 #endif