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 "syslevel.h"
  13 #include "selectors.h"  /* for SET_FS */
  14
  15 struct _PDB;
  16 struct __EXCEPTION_FRAME;
  17
  18 /* Thread exception block */
  19 typedef struct _TEB
  20 {
  21     struct __EXCEPTION_FRAME *except; /* 00 Head of exception handling chain */
  22     void        *stack_top;      /*  04 Top of thread stack */
  23     void        *stack_low;      /*  08 Stack low-water mark */
  24     HTASK16      htask16;        /*  0c Win16 task handle */
  25     WORD         stack_sel;      /*  0e 16-bit stack selector */
  26     DWORD        selman_list;    /*  10 Selector manager list */
  27     DWORD        user_ptr;       /*  14 User pointer */
  28     struct _TEB *self;           /*  18 Pointer to this structure */
  29     WORD         flags;          /*  1c Flags */
  30     WORD         mutex_count;    /*  1e Win16 mutex count */
  31     DWORD        debug_context;  /*  20 Debug context */
  32     void        *tid;            /*  24 Thread id */
  33     HQUEUE16     queue;          /*  28 Message queue */
  34     WORD         pad1;           /*  2a */
  35     LPVOID      *tls_ptr;        /*  2c Pointer to TLS array */
  36     struct _PDB *process;        /*  30 owning process (used by NT3.51 applets)*/
  37     int          socket;         /*  34 Socket for server communication */
  38     DWORD        exit_code;      /*  38 Termination status */
  39     WORD         teb_sel;        /*  3c Selector to TEB */
  40     WORD         emu_sel;        /*  3e 80387 emulator selector */
  41     void        *buffer;         /*  40 Buffer shared with server */
  42     int          buffer_size;    /*  44 Size of server buffer */
  43     void       (*startup)(void); /*  48 Thread startup routine */
  44     int          thread_errno;   /*  4c Per-thread errno (was: ring0_thread) */
  45     int          thread_h_errno; /*  50 Per-thread h_errno (was: ptr to tdbx structure) */
  46     void        *stack_base;     /*  54 Base of the stack */
  47     void        *signal_stack;   /*  58 Signal stack (was: exit_stack) */
  48     void        *emu_data;       /*  5c Related to 80387 emulation */
  49     DWORD        last_error;     /*  60 Last error code */
  50     HANDLE       event;          /*  64 Thread event (was: debugger context block) */
  51     DWORD        debug_thread;   /*  68 Thread debugging this one (?) */
  52     void        *pcontext;       /*  6c Thread register context */
  53     DWORD        cur_stack;      /*  70 Current stack (was: unknown) */
  54     DWORD        unknown3[2];    /*  74 Unknown */
  55     WORD         current_ss;     /*  7c Another 16-bit stack selector */
  56     WORD         pad2;           /*  7e */
  57     void        *ss_table;       /*  80 Pointer to info about 16-bit stack */
  58     WORD         thunk_ss;       /*  84 Yet another 16-bit stack selector */
  59     WORD         pad3;           /*  86 */
  60     LPVOID       tls_array[64];  /*  88 Thread local storage */
  61     DWORD        delta_priority; /* 188 Priority delta */
  62     DWORD        unknown4[7];    /* 18c Unknown */
  63     void        *create_data;    /* 1a8 Pointer to creation structure */
  64     DWORD        suspend_count;  /* 1ac SuspendThread() counter */
  65     void        *entry_point;    /* 1b0 Thread entry point (was: unknown) */
  66     void        *entry_arg;      /* 1b4 Entry point arg (was: unknown) */
  67     DWORD        unknown5[4];    /* 1b8 Unknown */
  68     DWORD        sys_count[4];   /* 1c8 Syslevel mutex entry counters */
  69     SYSLEVEL    *sys_mutex[4];   /* 1d8 Syslevel mutex pointers */
  70     DWORD        unknown6[2];    /* 1e8 Unknown */
  71     /* The following are Wine-specific fields */
  72     struct _TEB *next;           /* Global thread list */
  73     DWORD        cleanup;        /* Cleanup service handle */
  74 } TEB;
  75
  76 /* Thread exception flags */
  77 #define TEBF_WIN32  0x0001
  78 #define TEBF_TRAP   0x0002
  79
  80 /* The pseudo handle value returned by GetCurrentThread */
  81 #define CURRENT_THREAD_PSEUDOHANDLE 0xfffffffe
  82
  83 /* The per-thread signal stack size */
  84 #define SIGNAL_STACK_SIZE  16384
  85
  86
  87 /* scheduler/thread.c */
  88 extern TEB *THREAD_CreateInitialThread( struct _PDB *pdb, int server_fd );
  89 extern TEB *THREAD_Create( struct _PDB *pdb, DWORD flags,
  90                            DWORD stack_size, BOOL alloc_stack16,
  91                            LPSECURITY_ATTRIBUTES sa, int *server_handle );
  92 extern BOOL THREAD_IsWin16( TEB *thdb );
  93 extern TEB *THREAD_IdToTEB( DWORD id );
  94
  95 /* scheduler/sysdeps.c */
  96 extern int SYSDEPS_SpawnThread( TEB *teb );
  97 extern void SYSDEPS_SetCurThread( TEB *teb );
  98 extern void SYSDEPS_ExitThread(void);
  99
 100 #define SetLastError(err)    ((void)(NtCurrentTeb()->last_error = (err)))
 101 #define GetCurrentThreadId() ((DWORD)NtCurrentTeb()->tid)
 102
 103 #endif  /* __WINE_THREAD_H */