include/thread.h

   1 /*
   2  * Thread definitions
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  */
   6
   7 #ifndef __WINE_THREAD_H
   8 #define __WINE_THREAD_H
   9
  10 #include "config.h"
  11 #include "winbase.h"
  12 #include "selectors.h"  /* for SET_FS */
  13
  14 struct _PDB;
  15 struct __EXCEPTION_FRAME;
  16
  17 /* Thread exception block */
  18 typedef struct _TEB
  19 {
  20     struct __EXCEPTION_FRAME *except; /* 00 Head of exception handling chain */
  21     void        *stack_top;      /* 04 Top of thread stack */
  22     void        *stack_low;      /* 08 Stack low-water mark */
  23     HTASK16      htask16;        /* 0c Win16 task handle */
  24     WORD         stack_sel;      /* 0e 16-bit stack selector */
  25     DWORD        selman_list;    /* 10 Selector manager list */
  26     DWORD        user_ptr;       /* 14 User pointer */
  27     struct _TEB *self;           /* 18 Pointer to this structure */
  28     WORD         flags;          /* 1c Flags */
  29     WORD         mutex_count;    /* 1e Win16 mutex count */
  30     DWORD        debug_context;  /* 20 Debug context */
  31     DWORD       *ppriority;      /* 24 Pointer to current priority */
  32     HQUEUE16     queue;          /* 28 Message queue */
  33     WORD         pad1;           /* 2a */
  34     LPVOID      *tls_ptr;        /* 2c Pointer to TLS array */
  35     struct _PDB *process;      /* 30 owning process (used by NT3.51 applets)*/
  36 } TEB;
  37
  38 /* Thread exception flags */
  39 #define TEBF_WIN32  0x0001
  40 #define TEBF_TRAP   0x0002
  41
  42 /* Thread database */
  43 typedef struct _THDB
  44 {
  45     LONG           header[2];      /*  00 Kernel object header */
  46     struct _PDB   *process;        /*  08 Process owning this thread */
  47     HANDLE         event;          /*  0c Thread event */
  48     TEB            teb;            /*  10 Thread exception block */
  49     DWORD          flags;          /*  44 Flags */
  50     DWORD          exit_code;      /*  48 Termination status */
  51     WORD           teb_sel;        /*  4c Selector to TEB */
  52     WORD           emu_sel;        /*  4e 80387 emulator selector */
  53     int            thread_errno;   /*  50 Per-thread errno (was: unknown) */
  54     void          *wait_list;      /*  54 Event waiting list */
  55     int            thread_h_errno; /*  50 Per-thread h_errno (was: unknown) */
  56     void          *ring0_thread;   /*  5c Pointer to ring 0 thread */
  57     void          *ptdbx;          /*  60 Pointer to TDBX structure */
  58     void          *stack_base;     /*  64 Base of the stack */
  59     void          *exit_stack;     /*  68 Stack pointer on thread exit */
  60     void          *emu_data;       /*  6c Related to 80387 emulation */
  61     DWORD          last_error;     /*  70 Last error code */
  62     void          *debugger_CB;    /*  74 Debugger context block */
  63     DWORD          debug_thread;   /*  78 Thread debugging this one (?) */
  64     void          *pcontext;       /*  7c Thread register context */
  65     DWORD          cur_stack;      /*  80 Current stack (was: unknown) */
  66     DWORD          unknown3[2];    /*  84 Unknown */
  67     WORD           current_ss;     /*  8c Another 16-bit stack selector */
  68     WORD           pad2;           /*  8e */
  69     void          *ss_table;       /*  90 Pointer to info about 16-bit stack */
  70     WORD           thunk_ss;       /*  94 Yet another 16-bit stack selector */
  71     WORD           pad3;           /*  96 */
  72     LPVOID         tls_array[64];  /*  98 Thread local storage */
  73     DWORD          delta_priority; /* 198 Priority delta */
  74     DWORD          unknown4[7];    /* 19c Unknown */
  75     void          *create_data;    /* 1b8 Pointer to creation structure */
  76     DWORD          suspend_count;  /* 1bc SuspendThread() counter */
  77     void          *entry_point;    /* 1c0 Thread entry point (was: unknown) */
  78     void          *entry_arg;      /* 1c4 Entry point arg (was: unknown) */
  79     DWORD          unknown5[4];    /* 1c8 Unknown */
  80     DWORD          sys_count[4];   /* 1d8 Syslevel mutex entry counters */
  81     CRITICAL_SECTION *sys_mutex[4];/* 1e8 Syslevel mutex pointers */
  82     DWORD          unknown6[2];    /* 1f8 Unknown */
  83     /* The following are Wine-specific fields */
  84     int            socket;         /* Socket for server communication */
  85     unsigned int   seq;            /* Server sequence number */
  86     void          *server_tid;     /* Server id for this thread */
  87     void         (*startup)(void); /* Thread startup routine */
  88     struct _THDB  *next;           /* Global thread list */
  89     DWORD          cleanup;        /* Cleanup service handle */
  90 } THDB;
  91
  92 /* The pseudo handle value returned by GetCurrentThread */
  93 #define CURRENT_THREAD_PSEUDOHANDLE 0xfffffffe
  94
  95 #ifdef __i386__
  96 /* On the i386, the current thread is in the %fs register */
  97 # define SET_CUR_THREAD(thdb) SET_FS((thdb)->teb_sel)
  98 #else
  99 extern THDB *pCurrentThread;
 100 # define SET_CUR_THREAD(thdb) (pCurrentThread = (thdb))
 101 #endif  /* __i386__ */
 102
 103
 104 /* scheduler/thread.c */
 105 extern THDB *THREAD_CreateInitialThread( struct _PDB *pdb, int server_fd );
 106 extern THDB *THREAD_Create( struct _PDB *pdb, DWORD flags,
 107                             DWORD stack_size, BOOL alloc_stack16,
 108                             LPSECURITY_ATTRIBUTES sa, int *server_handle );
 109 extern THDB *THREAD_Current(void);
 110 extern BOOL THREAD_IsWin16( THDB *thdb );
 111 extern THDB *THREAD_IdToTHDB( DWORD id );
 112
 113 /* scheduler/sysdeps.c */
 114 extern int SYSDEPS_SpawnThread( THDB *thread );
 115 extern void SYSDEPS_ExitThread(void);
 116 extern TEB * WINAPI NtCurrentTeb(void);
 117
 118 #endif  /* __WINE_THREAD_H */