157 lines
6.7 KiB
C
157 lines
6.7 KiB
C
/*
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* Task definitions
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*
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* Copyright 1995 Alexandre Julliard
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*/
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#ifndef __WINE_TASK_H
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#define __WINE_TASK_H
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#include "wintypes.h"
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#pragma pack(1)
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/* Process database (i.e. a normal DOS PSP) */
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typedef struct
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{
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WORD int20; /* 00 int 20h instruction */
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WORD nextParagraph; /* 02 Segment of next paragraph */
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BYTE reserved1;
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BYTE dispatcher[5]; /* 05 Long call to DOS */
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FARPROC16 savedint22 WINE_PACKED; /* 0a Saved int 22h handler */
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FARPROC16 savedint23 WINE_PACKED; /* 0e Saved int 23h handler */
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FARPROC16 savedint24 WINE_PACKED; /* 12 Saved int 24h handler */
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WORD parentPSP; /* 16 Selector of parent PSP */
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BYTE fileHandles[20]; /* 18 Open file handles */
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HANDLE16 environment; /* 2c Selector of environment */
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WORD reserved2[2];
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WORD nbFiles; /* 32 Number of file handles */
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SEGPTR fileHandlesPtr; /* 34 Pointer to file handle table */
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HANDLE16 hFileHandles; /* 38 Handle to fileHandlesPtr */
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WORD reserved3[17];
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BYTE fcb1[16]; /* 5c First FCB */
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BYTE fcb2[20]; /* 6c Second FCB */
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BYTE cmdLine[128]; /* 80 Command-line (first byte is len)*/
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} PDB;
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/* Segment containing MakeProcInstance() thunks */
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typedef struct
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{
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WORD next; /* Selector of next segment */
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WORD magic; /* Thunks signature */
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WORD unused;
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WORD free; /* Head of the free list */
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WORD thunks[4]; /* Each thunk is 4 words long */
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} THUNKS;
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#define THUNK_MAGIC ('P' | ('T' << 8))
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struct _THDB;
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struct _WSINFO;
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struct _NE_MODULE;
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/* signal proc typedef */
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typedef void (CALLBACK *USERSIGNALPROC)(HANDLE16, UINT16, UINT16,
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HINSTANCE16, HQUEUE16);
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/* Task database. See 'Windows Internals' p. 226.
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* Note that 16-bit OLE 2 libs like to read it directly
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* so we have to keep entry offsets as they are.
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*/
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typedef struct _TDB
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{
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HTASK16 hNext; /* 00 Selector of next TDB */
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DWORD ss_sp WINE_PACKED; /* 02 Stack pointer of task */
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WORD nEvents; /* 06 Events for this task */
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INT16 priority; /* 08 Task priority, -32..15 */
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WORD unused1; /* 0a */
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HTASK16 hSelf; /* 0c Selector of this TDB */
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HANDLE16 hPrevInstance; /* 0e Previous instance of module */
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DWORD unused2; /* 10 */
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WORD ctrlword8087; /* 14 80x87 control word */
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WORD flags; /* 16 Task flags */
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UINT16 error_mode; /* 18 Error mode (see SetErrorMode)*/
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WORD version; /* 1a Expected Windows version */
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HANDLE16 hInstance; /* 1c Instance handle for task */
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HMODULE16 hModule; /* 1e Module handle */
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HQUEUE16 hQueue; /* 20 Selector of task queue */
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HTASK16 hParent; /* 22 Selector of TDB of parent */
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WORD signal_flags; /* 24 Flags for signal handler */
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FARPROC16 sighandler WINE_PACKED; /* 26 Signal handler */
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USERSIGNALPROC userhandler WINE_PACKED; /* 2a USER signal handler */
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FARPROC16 discardhandler WINE_PACKED; /* 2e Handler for GlobalNotify() */
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DWORD int0 WINE_PACKED; /* 32 int 0 (divide by 0) handler */
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DWORD int2 WINE_PACKED; /* 36 int 2 (NMI) handler */
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DWORD int4 WINE_PACKED; /* 3a int 4 (INTO) handler */
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DWORD int6 WINE_PACKED; /* 3e int 6 (invalid opc) handler */
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DWORD int7 WINE_PACKED; /* 42 int 7 (coprocessor) handler */
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DWORD int3e WINE_PACKED; /* 46 int 3e (80x87 emu) handler */
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DWORD int75 WINE_PACKED; /* 4a int 75 (80x87 error) handler */
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DWORD compat_flags WINE_PACKED; /* 4e Compatibility flags */
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BYTE unused4[2]; /* 52 */
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struct _THDB *thdb; /* 54 Pointer to thread database */
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struct _WSINFO *pwsi; /* 58 Socket control struct */
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BYTE unused5[4]; /* 5B */
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HANDLE16 hPDB; /* 60 Selector of PDB (i.e. PSP) */
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SEGPTR dta WINE_PACKED; /* 62 Current DTA */
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BYTE curdrive; /* 66 Current drive */
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BYTE curdir[65]; /* 67 Current directory */
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WORD nCmdShow; /* a8 cmdShow parameter to WinMain */
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HTASK16 hYieldTo; /* aa Next task to schedule */
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DWORD dlls_to_init; /* ac Ptr to DLLs to initialize */
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HANDLE16 hCSAlias; /* b0 Code segment for this TDB */
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THUNKS thunks WINE_PACKED; /* b2 Make proc instance thunks */
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WORD more_thunks[6*4]; /* c2 Space for 6 more thunks */
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BYTE module_name[8]; /* f2 Module name for task */
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WORD magic; /* fa TDB signature */
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DWORD unused7; /* fc */
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PDB pdb; /* 100 PDB for this task */
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} TDB;
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#define TDB_MAGIC ('T' | ('D' << 8))
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/* TDB flags */
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#define TDBF_WINOLDAP 0x0001
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#define TDBF_OS2APP 0x0008
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#define TDBF_WIN32 0x0010
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/* USER signals */
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#define USIG_TERMINATION 0x0020
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#define USIG_DLL_LOAD 0x0040
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#define USIG_DLL_UNLOAD 0x0080
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#define USIG_GPF 0x0666
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/* THHOOK Kernel Data Structure */
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typedef struct _THHOOK
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{
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HANDLE16 hGlobalHeap; /* 00 (handle BURGERMASTER) */
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WORD pGlobalHeap; /* 02 (selector BURGERMASTER) */
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HMODULE16 hExeHead; /* 04 hFirstModule */
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HMODULE16 hExeSweep; /* 06 (unused) */
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HANDLE16 TopPDB; /* 08 (handle of KERNEL PDB) */
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HANDLE16 HeadPDB; /* 0A (first PDB in list) */
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HANDLE16 TopSizePDB; /* 0C (unused) */
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HTASK16 HeadTDB; /* 0E hFirstTask */
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HTASK16 CurTDB; /* 10 hCurrentTask */
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HTASK16 LoadTDB; /* 12 (unused) */
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HTASK16 LockTDB; /* 14 hLockedTask */
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} THHOOK;
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#pragma pack(4)
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extern THHOOK *pThhook;
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extern HTASK16 TASK_Create( struct _THDB *thdb, struct _NE_MODULE *pModule,
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HINSTANCE16 hInstance, HINSTANCE16 hPrevInstance,
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UINT16 cmdShow );
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extern void TASK_StartTask( HTASK16 hTask );
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extern void TASK_KillCurrentTask( INT16 exitCode );
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extern HTASK16 TASK_GetNextTask( HTASK16 hTask );
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extern void TASK_Reschedule(void);
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extern void TASK_InstallTHHook( THHOOK *pNewThook );
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#endif /* __WINE_TASK_H */
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