Kernel/include/threads.h

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