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
  60         // --- proc.c's
  61         volatile int    CurCPU;
  62 } tThread;
  63
  64
  65 enum {
  66         THREAD_STAT_NULL,
  67         THREAD_STAT_ACTIVE,
  68         THREAD_STAT_SLEEPING,
  69         THREAD_STAT_WAITING,
  70         THREAD_STAT_ZOMBIE,
  71         THREAD_STAT_DEAD
  72 };
  73
  74 enum eFaultNumbers
  75 {
  76         FAULT_MISC,
  77         FAULT_PAGE,
  78         FAULT_ACCESS,
  79         FAULT_DIV0,
  80         FAULT_OPCODE,
  81         FAULT_FLOAT
  82 };
  83
  84 #define GETMSG_IGNORE   ((void*)-1)
  85
  86 // === FUNCTIONS ===
  87 extern tThread  *Proc_GetCurThread(void);
  88 extern tThread  *Threads_GetThread(Uint TID);
  89 extern void     Threads_Wake(tThread *Thread);
  90 extern void     Threads_AddActive(tThread *Thread);
  91 extern tThread  *Threads_GetNextToRun(int CPU, tThread *Last);
  92
  93 #endif