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 #include "ntdef.h" /* UNICODE_STRING */
  15
  16 struct _PDB;
  17 struct __EXCEPTION_FRAME;
  18
  19 /* Thread exception block
  20
  21   flags in the comment:
  22   1-- win95 field
  23   d-- win95 debug version
  24   -2- nt field
  25   --3 wine special
  26   --n wine unused
  27   !-- or -!- likely or observed  collision
  28   more problems (collected from mailing list):
  29   psapi.dll 0x10/0x30 (expects nt fields)
  30   ie4       0x40
  31   PESHiELD  0x23/0x30 (win95)
  32 */
  33 typedef struct _TEB
  34 {
  35 /* start of NT_TIB */
  36     struct __EXCEPTION_FRAME *except; /* 12- 00 Head of exception handling chain */
  37     void        *stack_top;      /* 12-  04 Top of thread stack */
  38     void        *stack_low;      /* 12-  08 Stack low-water mark */
  39     HTASK16      htask16;        /* 1--  0c Win16 task handle */
  40     WORD         stack_sel;      /* 1--  0e 16-bit stack selector */
  41     DWORD        selman_list;    /* 1-n  10 Selector manager list */
  42     DWORD        user_ptr;       /* 12n  14 User pointer */
  43 /* end of NT_TIB */
  44     struct _TEB *self;           /* 12-  18 Pointer to this structure */
  45     WORD         tibflags;       /* 1!n  1c Flags (NT: EnvironmentPointer) */
  46     WORD         mutex_count;    /* 1-n  1e Win16 mutex count */
  47     DWORD        debug_context;  /* 1!n  20 Debug context (NT: PVOID UniqueProcess) */
  48     void        *tid;            /* -2-  24 Thread id */
  49     HQUEUE16     queue;          /* 1!-  28 Message queue (NT: DWORD ActiveRpcHandle)*/
  50     WORD         pad1;           /* --n  2a */
  51     LPVOID      *tls_ptr;        /* 1--  2c Pointer to TLS array */
  52     struct _PDB *process;        /* 12-  30 owning process (win95: PDB; nt: NTPEB !!) */
  53     DWORD        flags;          /* 1-n  34 */
  54     DWORD        exit_code;      /* 1--  38 Termination status */
  55     WORD         teb_sel;        /* 1--  3c Selector to TEB */
  56     WORD         emu_sel;        /* 1-n  3e 80387 emulator selector */
  57     DWORD        unknown1;       /* --n  40 */
  58     DWORD        unknown2;       /* --n  44 */
  59     void       (*startup)(void); /* --3  48 Thread startup routine */
  60     int          thread_errno;   /* --3  4c Per-thread errno (was: ring0_thread) */
  61     int          thread_h_errno; /* --3  50 Per-thread h_errno (was: ptr to tdbx structure) */
  62     void        *stack_base;     /* 1--  54 Base of the stack */
  63     void        *signal_stack;   /* --3  58 Signal stack (was: exit_stack) */
  64     void        *emu_data;       /* --n  5c Related to 80387 emulation */
  65     DWORD        last_error;     /* 1--  60 Last error code */
  66     HANDLE       debug_cb;       /* 1-n  64 Debugger context block */
  67     DWORD        debug_thread;   /* 1-n  68 Thread debugging this one (?) */
  68     void        *pcontext;       /* 1-n  6c Thread register context */
  69     DWORD        cur_stack;      /* --3  70 Current stack (was: unknown) */
  70     DWORD        ThunkConnect;   /* 1-n  74 */
  71     DWORD        NegStackBase;   /* 1-n  78 */
  72     WORD         current_ss;     /* 1-n  7c Another 16-bit stack selector */
  73     WORD         pad2;           /* --n  7e */
  74     void        *ss_table;       /* --n  80 Pointer to info about 16-bit stack */
  75     WORD         thunk_ss;       /* --n  84 Yet another 16-bit stack selector */
  76     WORD         pad3;           /* --n  86 */
  77     DWORD        pad4[15];       /* --n  88 */
  78     ULONG        CurrentLocale;  /* -2n  C4 */
  79     DWORD        pad5[48];       /* --n  C8 */
  80     DWORD        delta_priority; /* 1-n 188 Priority delta */
  81     DWORD        unknown4[7];    /* d-n 18c Unknown */
  82     void        *create_data;    /* d-n 1a8 Pointer to creation structure */
  83     DWORD        suspend_count;  /* d-n 1ac SuspendThread() counter */
  84     void        *entry_point;    /* --3 1b0 Thread entry point (was: unknown) */
  85     void        *entry_arg;      /* --3 1b4 Entry point arg (was: unknown) */
  86     DWORD        unknown5[4];    /* --n 1b8 Unknown */
  87     DWORD        sys_count[4];   /* --3 1c8 Syslevel mutex entry counters */
  88     SYSLEVEL    *sys_mutex[4];   /* --3 1d8 Syslevel mutex pointers */
  89     DWORD        unknown6[5];    /* --n 1e8 Unknown */
  90
  91     /* The following are Wine-specific fields (NT: GDI stuff) */
  92     struct _TEB *next;           /* --3 1fc Global thread list */
  93     DWORD        cleanup;        /* --3 200 Cleanup service handle */
  94     int          socket;         /* --3 204 Socket for server communication */
  95     void        *buffer;         /* --3 208 Buffer shared with server */
  96     int          buffer_size;    /* --3 20c Size of server buffer */
  97     void        *debug_info;     /* --3 210 Info for debugstr functions */
  98     /* here is plenty space for wine specific fields (don't forget to change pad6!!) */
  99
 100     /* the following are nt specific fields */
 101     DWORD        pad6[633];                  /* --n 214 */
 102     UNICODE_STRING StaticUnicodeString;      /* -2- bf8 used by advapi32 */
 103     USHORT       StaticUnicodeBuffer[261];   /* -2- c00 used by advapi32 */
 104     DWORD        pad7;                       /* --n e0c */
 105     LPVOID       tls_array[64];              /* -2- e10 Thread local storage */
 106     DWORD        pad8[3];                    /* --n f10 */
 107     PVOID        ReservedForNtRpc;           /* -2- f1c used by rpcrt4 */
 108     DWORD        pad9[24];                   /* --n f20 */
 109     PVOID        ReservedForOle;             /* -2- f80 used by ole32 */
 110 } TEB;
 111
 112 /* Thread exception flags */
 113 #define TEBF_WIN32  0x0001
 114 #define TEBF_TRAP   0x0002
 115
 116 /* The pseudo handle value returned by GetCurrentThread */
 117 #define CURRENT_THREAD_PSEUDOHANDLE 0xfffffffe
 118
 119 /* The per-thread signal stack size */
 120 #define SIGNAL_STACK_SIZE  16384
 121
 122
 123 /* scheduler/thread.c */
 124 extern TEB *THREAD_CreateInitialThread( struct _PDB *pdb, int server_fd );
 125 extern TEB *THREAD_Create( struct _PDB *pdb, int fd, DWORD flags,
 126                            DWORD stack_size, BOOL alloc_stack16,
 127                            LPSECURITY_ATTRIBUTES sa, int *server_handle );
 128 extern BOOL THREAD_IsWin16( TEB *thdb );
 129 extern TEB *THREAD_IdToTEB( DWORD id );
 130
 131 /* scheduler/sysdeps.c */
 132 extern int SYSDEPS_SpawnThread( TEB *teb );
 133 extern void SYSDEPS_SetCurThread( TEB *teb );
 134 extern void SYSDEPS_ExitThread(void);
 135
 136 #define SetLastError(err)    ((void)(NtCurrentTeb()->last_error = (err)))
 137 #define GetCurrentThreadId() ((DWORD)NtCurrentTeb()->tid)
 138
 139 #endif  /* __WINE_THREAD_H */