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/*
* Task definitions
*
* Copyright 1995 Alexandre Julliard
*/
#ifndef __WINE_TASK_H
#define __WINE_TASK_H
#include "wintypes.h"
#pragma pack(1)
/* Process database (i.e. a normal DOS PSP) */
typedef struct
{
WORD int20; /* 00 int 20h instruction */
WORD nextParagraph; /* 02 Segment of next paragraph */
BYTE reserved1;
BYTE dispatcher[5]; /* 05 Long call to DOS */
FARPROC16 savedint22 WINE_PACKED; /* 0a Saved int 22h handler */
FARPROC16 savedint23 WINE_PACKED; /* 0e Saved int 23h handler */
FARPROC16 savedint24 WINE_PACKED; /* 12 Saved int 24h handler */
WORD parentPSP; /* 16 Selector of parent PSP */
BYTE fileHandles[20]; /* 18 Open file handles */
HANDLE16 environment; /* 2c Selector of environment */
WORD reserved2[2];
WORD nbFiles; /* 32 Number of file handles */
SEGPTR fileHandlesPtr; /* 34 Pointer to file handle table */
HANDLE16 hFileHandles; /* 38 Handle to fileHandlesPtr */
WORD reserved3[17];
BYTE fcb1[16]; /* 5c First FCB */
BYTE fcb2[20]; /* 6c Second FCB */
BYTE cmdLine[128]; /* 80 Command-line (first byte is len)*/
} PDB;
/* Segment containing MakeProcInstance() thunks */
typedef struct
{
WORD next; /* Selector of next segment */
WORD magic; /* Thunks signature */
WORD unused;
WORD free; /* Head of the free list */
WORD thunks[4]; /* Each thunk is 4 words long */
} THUNKS;
#define THUNK_MAGIC ('P' | ('T' << 8))
struct _THDB;
struct _WSINFO;
/* signal proc typedef */
typedef void (CALLBACK *USERSIGNALPROC)(HANDLE16, UINT16, UINT16,
HINSTANCE16, HQUEUE16);
/* Task database. See 'Windows Internals' p. 226.
* Note that 16-bit OLE 2 libs like to read it directly
* so we have to keep entry offsets as they are.
*/
typedef struct _TDB
{
HTASK16 hNext; /* 00 Selector of next TDB */
DWORD ss_sp WINE_PACKED; /* 02 Stack pointer of task */
WORD nEvents; /* 06 Events for this task */
INT16 priority; /* 08 Task priority, -32..15 */
WORD unused1; /* 0a */
HTASK16 hSelf; /* 0c Selector of this TDB */
HANDLE16 hPrevInstance; /* 0e Previous instance of module */
DWORD unused2; /* 10 */
WORD ctrlword8087; /* 14 80x87 control word */
WORD flags; /* 16 Task flags */
UINT16 error_mode; /* 18 Error mode (see SetErrorMode)*/
WORD version; /* 1a Expected Windows version */
HANDLE16 hInstance; /* 1c Instance handle for task */
HMODULE16 hModule; /* 1e Module handle */
HQUEUE16 hQueue; /* 20 Selector of task queue */
HTASK16 hParent; /* 22 Selector of TDB of parent */
WORD signal_flags; /* 24 Flags for signal handler */
FARPROC16 sighandler WINE_PACKED; /* 26 Signal handler */
USERSIGNALPROC userhandler WINE_PACKED; /* 2a USER signal handler */
FARPROC16 discardhandler WINE_PACKED; /* 2e Handler for GlobalNotify() */
DWORD int0 WINE_PACKED; /* 32 int 0 (divide by 0) handler */
DWORD int2 WINE_PACKED; /* 36 int 2 (NMI) handler */
DWORD int4 WINE_PACKED; /* 3a int 4 (INTO) handler */
DWORD int6 WINE_PACKED; /* 3e int 6 (invalid opc) handler */
DWORD int7 WINE_PACKED; /* 42 int 7 (coprocessor) handler */
DWORD int3e WINE_PACKED; /* 46 int 3e (80x87 emu) handler */
DWORD int75 WINE_PACKED; /* 4a int 75 (80x87 error) handler */
DWORD compat_flags WINE_PACKED; /* 4e Compatibility flags */
BYTE unused4[2]; /* 52 */
struct _THDB *thdb; /* 54 Pointer to thread database */
struct _WSINFO *pwsi; /* 58 Socket control struct */
BYTE unused5[4]; /* 5B */
HANDLE16 hPDB; /* 60 Selector of PDB (i.e. PSP) */
SEGPTR dta WINE_PACKED; /* 62 Current DTA */
BYTE curdrive; /* 66 Current drive */
BYTE curdir[65]; /* 67 Current directory */
WORD nCmdShow; /* a8 cmdShow parameter to WinMain */
HTASK16 hYieldTo; /* aa Next task to schedule */
DWORD dlls_to_init; /* ac Ptr to DLLs to initialize */
HANDLE16 hCSAlias; /* b0 Code segment for this TDB */
THUNKS thunks WINE_PACKED; /* b2 Make proc instance thunks */
WORD more_thunks[6*4]; /* c2 Space for 6 more thunks */
BYTE module_name[8]; /* f2 Module name for task */
WORD magic; /* fa TDB signature */
DWORD unused7; /* fc */
PDB pdb; /* 100 PDB for this task */
} TDB;
#define TDB_MAGIC ('T' | ('D' << 8))
/* TDB flags */
#define TDBF_WINOLDAP 0x0001
#define TDBF_OS2APP 0x0008
#define TDBF_WIN32 0x0010
/* USER signals */
#define USIG_TERMINATION 0x0020
#define USIG_DLL_LOAD 0x0040
#define USIG_DLL_UNLOAD 0x0080
#define USIG_GPF 0x0666
#pragma pack(4)
extern BOOL32 TASK_Init(void);
extern HTASK16 TASK_CreateTask( HMODULE16 hModule, HINSTANCE16 hInstance,
HINSTANCE16 hPrevInstance,
HANDLE16 hEnvironment, LPCSTR cmdLine,
UINT16 cmdShow );
extern void TASK_KillCurrentTask( INT16 exitCode );
extern HTASK16 TASK_GetNextTask( HTASK16 hTask );
extern void TASK_Reschedule(void);
#endif /* __WINE_TASK_H */
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