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         struct sThread  *Next;  //!< Next thread in list
  20          int    IsLocked;       //!< Thread's spinlock
  21          int    Status;         //!< Thread Status
  22          int    RetStatus;      //!< Return Status
  23
  24         Uint    TID;    //!< Thread ID
  25         Uint    TGID;   //!< Thread Group (Process)
  26         Uint    PTID;   //!< Parent Thread ID
  27         Uint    UID, GID;       //!< User and Group
  28         char    *ThreadName;    //!< Name of thread
  29
  30         tVAddr  KernelStack;    //!< Kernel Stack Base
  31
  32         //! Memory Manager State
  33         tMemoryState    MemState;
  34
  35         //! State on task switch
  36         tTaskState      SavedState;
  37
  38          int    CurSignal;      //!< Signal currently being handled (0 for none)
  39         tVAddr  SignalHandlers[NSIG];   //!< Signal Handler List
  40         tTaskState      SignalState;    //!< Saved state for signal handler
  41
  42         tMsg    *Messages;      //!< Message Queue
  43         tMsg    *LastMessage;   //!< Last Message (speeds up insertion)
  44
  45          int    Quantum, Remaining;     //!< Quantum Size and remaining timesteps
  46          int    NumTickets;     //!< Priority - Chance of gaining CPU
  47
  48         Uint    Config[NUM_CFG_ENTRIES];        //!< Per-process configuration
  49 } tThread;
  50
  51
  52 enum {
  53         THREAD_STAT_NULL,
  54         THREAD_STAT_ACTIVE,
  55         THREAD_STAT_SLEEPING,
  56         THREAD_STAT_WAITING,
  57         THREAD_STAT_ZOMBIE,
  58         THREAD_STAT_DEAD
  59 };
  60
  61 // === FUNCTIONS ===
  62 extern tThread  *Proc_GetCurThread();
  63 extern tThread  *Threads_GetThread(Uint TID);
  64 extern void     Threads_Wake(tThread *Thread);
  65
  66 #endif