Source code of Windows XP (NT5)
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//-----------------------------------------------------------------------
//
// APC.H - Asynchronous Procedure Call Interface File for Ring 3
//
//-----------------------------------------------------------------------
//
// Author: Mike Toutonghi
// Copyright: 1993 Microsoft
//
//-----------------------------------------------------------------------
// File Description:
// Provides an interface to both USER and KERNEL level APCs under
// Chicago. This file must be kept in sync with APC.INC
//
//-----------------------------------------------------------------------
// Revision History:
// 2/26/93 - created (miketout)
//
//-----------------------------------------------------------------------
#ifdef WOW32_EXTENSIONS
#define AssertSignature(x)
#else // WOW32_EXTENSIONS
#ifdef DEBUG
#define AssertCreate(x, p) ((p)->x##_dwSignature = x##_SIGNATURE)
#define AssertDestroy(x, p) ((p)->x##_dwSignature = 0x44414544)
#define AssertSignature(x) ULONG x##_dwSignature;
#define AssertP(x, p) Assert((p)->x##_dwSignature == x##_SIGNATURE)
#else
#define AssertCreate(x, p)
#define AssertDestroy(x, p)
#define AssertSignature(x)
#define AssertP(x, p)
#endif
#endif // else WOW32_EXTENSIONS
//---------------------------------------------------------------------
// SUPPORT STRUCTURES
//---------------------------------------------------------------------
typedef void (APIENTRY *PAPCFUNC)( DWORD dwParam );
#ifndef PUAPC
typedef struct _userapcrec *PUAPC;
typedef struct _kernelapcrec *PKAPC;
#endif
//
// Structure for a sync APC. Sync APCs are APCs which are
// queueable at interrupt or event time, and synchronize
// a function with the Win32 synchronization objects.
//
// By using a sync APC, interrupt service routines can signal
// Win32 events, decrement semaphores, queue APCs, and set timers.
//
typedef struct _syncapcrec {
PUAPC sar_nextapc; // next APC in list
DWORD sar_dwparam1; // first parameter
DWORD sar_dwparam2; // second parameter for APC
PAPCFUNC sar_apcaddr; // function to invoke
DWORD sar_dwparam3; // third parameter
AssertSignature(SYNCAPCREC)
} SYNCAPCREC;
#define SYNCAPCREC_SIGNATURE 0x20524153
//
// Structure for a user APC
//
typedef struct _userapcrec {
PUAPC uar_nextapc; // next APC in list
DWORD uar_apcstate; // state (APC_DELIVERED)
DWORD uar_dwparam; // parameter for APC
PAPCFUNC uar_apcaddr; // function to invoke
PAPCFUNC uar_apcR0rundown; // call if can't deliver APC
AssertSignature(USERAPCREC)
} USERAPCREC;
#define USERAPCREC_SIGNATURE 0x20524155
// APC state flags
#define APC_DELIVERED 0 // bit set when an APC is delivered
#define APC_DELIVERED_MASK (1 << APC_DELIVERED)
#define APC_FLAG_LAST 0 // last flag
//
// Structure for a kernel APC
//
typedef struct _kernelapcrec {
PKAPC kar_nextapc; // next kernel APC in list
DWORD kar_dwparam; // kernel APC parameter
PAPCFUNC kar_apcaddr; // APC function
PAPCFUNC kar_event; // used if an event is queued for APC
DWORD kar_savedeax; // saved eax for parameter
DWORD kar_savedeip; // eip for same reason as above
WORD kar_savedcs; // saved ring 3 cs to return w/o stk
WORD kar_apcstate; // state (KAR_FLAG...)
AssertSignature(KERNELAPCREC)
} KERNELAPCREC;
#define KERNELAPCREC_SIGNATURE 0x2052414b
// KERNEL APC specific flags
#define KAR_FLAG_BUSY 0
#define KAR_FLAG_BUSY_MASK (1 << KAR_FLAG_BUSY)
#define KAR_FLAG_STATIC (KAR_FLAG_BUSY+1)
#define KAR_FLAG_STATIC_MASK (1 << KAR_FLAG_STATIC)
#define KAR_FLAG_CALLBACK (KAR_FLAG_STATIC+1)
#define KAR_FLAG_CALLBACK_MASK (1 << KAR_FLAG_CALLBACK)
//
// Terminate Process Info structure for local reboot init dialog
//
typedef struct tpi_s {
struct tpi_s *tpi_ptpiNext;
void *tpi_hwnd;
struct _pdb *tpi_ppdb;
struct _tdb *tpi_ptdb;
DWORD tpi_flags;
int tpi_nIndex;
AssertSignature(TPI)
} TPI;
typedef TPI *PTPI;
#define TPI_SIGNATURE 0x20495054
#define TPIF_HUNG 0x00000001
#define TPIF_PROCESSNAME 0x00000002
//
// TerminateThread parameter packet. Allocated at ring 3, passed to
// VxDTerminateThread.
//
typedef struct termdata_s {
struct _tdb *term_ptdb; // thread to terminate
DWORD term_ptcbAPC; // thread to receive user APC
DWORD term_pfnAPC; // user APC function address
DWORD term_hAPC; // handle of kernel APC
DWORD term_htimeout; // handle of time out when nuking
DWORD term_pfrinfo; // force/restore crsts info pointer
AssertSignature(TERMDATA)
} TERMDATA;
typedef TERMDATA *PTERMDATA;
#define TERMDATA_SIGNATURE 0x4d524554
typedef union tpiterm_u {
TERMDATA tpiterm_term;
TPI tpiterm_tpi;
} TPITERM;
//
// Parameter packet used to start a ring 0 thread
//
typedef struct _kernthreadstartdata {
DWORD StartAddress; // start address in ring 3
DWORD dwThreadParam; // parameter for ring 3 startup function
DWORD dwKTStackSize; // ring 3 stack size
DWORD dwCreationFlags; // thread creation flags
DWORD pRing3Event; // set after thread is created
DWORD dwThreadID; // handle for new thread or NULL
DWORD dwErrorCode; // error code if error
} KERNTHREADSTARTDATA;
//
// Parameter packet used to start a ring 0 thread
//
typedef struct _r0startdata {
DWORD R0StartAddress; // start address in ring 0
DWORD dwR0ThreadParam; // parameter for ring 0 startup function
DWORD dwR3StackSize; // ring 3 stack size
DWORD pRing0Event; // set after thread is created
DWORD R0FailCallBack; // or invoke this callback on failure
DWORD dwRing3ThreadID; // ID for thread
DWORD dwRing0ThreadID; // same for ring 0
} R0THREADSTARTDATA;
// include the TDBX structure
#include <tdbx.h>
#ifndef WOW32_EXTENSIONS
typedef VOID (KERNENTRY *PFN_KERNEL_APC)(PVOID);
typedef VOID (KERNENTRY *PFN_USER_APC)(PVOID);
DWORD __cdecl VWIN32_QueueKernelAPC(PFN_KERNEL_APC, DWORD, LPVOID, DWORD);
DWORD __cdecl VWIN32_QueueUserApc(PFN_USER_APC, DWORD, LPVOID);
DWORD __cdecl VWIN32_QueueUserApcEx(PFN_USER_APC, DWORD, LPVOID, LPVOID);
// Queue the kernel or user APC to the kernel services thread.
#define APC_KERNEL_SERVICE_THREAD ((LPVOID)0xFFFFFFFF)
DWORD __cdecl FreeAPCList();
DWORD CancelKernelAPC();
DWORD CancelSuspendAPC();
DWORD __stdcall SuspendAPCHandler(DWORD);
#endif // ndef WOW32_EXTENSIONS