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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) Microsoft Corporation. All rights reserved.
Module Name:
rtutils.h
Abstract:
Public declarations for the Router process utility functions.
--*/
#ifndef __ROUTING_RTUTILS_H__
#define __ROUTING_RTUTILS_H__
#if _MSC_VER > 1000
#pragma once
#endif
#ifdef __cplusplus
extern "C" {
#endif
//////////////////////////////////////////////////////////////////////////////
// //
// TRACING FUNCTION PROTOTYPES //
// //
// See DOCUMENT for more information //
// //
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// //
// Definitions for flags and constants //
// //
//////////////////////////////////////////////////////////////////////////////
#define TRACE_USE_FILE 0x00000001
#define TRACE_USE_CONSOLE 0x00000002
#define TRACE_NO_SYNCH 0x00000004
#define TRACE_NO_STDINFO 0x00000001
#define TRACE_USE_MASK 0x00000002
#define TRACE_USE_MSEC 0x00000004
#define TRACE_USE_DATE 0x00000008
#define INVALID_TRACEID 0xFFFFFFFF
//////////////////////////////////////////////////////////////////////////////
// //
// ANSI entry-points //
// //
//////////////////////////////////////////////////////////////////////////////
DWORD
APIENTRY
TraceRegisterExA(
IN LPCSTR lpszCallerName,
IN DWORD dwFlags
);
DWORD
APIENTRY
TraceDeregisterA(
IN DWORD dwTraceID
);
DWORD
APIENTRY
TraceDeregisterExA(
IN DWORD dwTraceID,
IN DWORD dwFlags
);
DWORD
APIENTRY
TraceGetConsoleA(
IN DWORD dwTraceID,
OUT LPHANDLE lphConsole
);
DWORD
__cdecl
TracePrintfA(
IN DWORD dwTraceID,
IN LPCSTR lpszFormat,
IN ... OPTIONAL
);
DWORD
__cdecl
TracePrintfExA(
IN DWORD dwTraceID,
IN DWORD dwFlags,
IN LPCSTR lpszFormat,
IN ... OPTIONAL
);
DWORD
APIENTRY
TraceVprintfExA(
IN DWORD dwTraceID,
IN DWORD dwFlags,
IN LPCSTR lpszFormat,
IN va_list arglist
);
DWORD
APIENTRY
TracePutsExA(
IN DWORD dwTraceID,
IN DWORD dwFlags,
IN LPCSTR lpszString
);
DWORD
APIENTRY
TraceDumpExA(
IN DWORD dwTraceID,
IN DWORD dwFlags,
IN LPBYTE lpbBytes,
IN DWORD dwByteCount,
IN DWORD dwGroupSize,
IN BOOL bAddressPrefix,
IN LPCSTR lpszPrefix
);
//////////////////////////////////////////////////////////////////////////////
// //
// ANSI entry-points macros //
// //
//////////////////////////////////////////////////////////////////////////////
#define TraceRegisterA(a) TraceRegisterExA(a,0)
#define TraceVprintfA(a,b,c) TraceVprintfExA(a,0,b,c)
#define TracePutsA(a,b) TracePutsExA(a,0,b)
#define TraceDumpA(a,b,c,d,e,f) TraceDumpExA(a,0,b,c,d,e,f)
//////////////////////////////////////////////////////////////////////////////
// //
// Unicode entry-points //
// //
//////////////////////////////////////////////////////////////////////////////
DWORD
APIENTRY
TraceRegisterExW(
IN LPCWSTR lpszCallerName,
IN DWORD dwFlags
);
DWORD
APIENTRY
TraceDeregisterW(
IN DWORD dwTraceID
);
DWORD
APIENTRY
TraceDeregisterExW(
IN DWORD dwTraceID,
IN DWORD dwFlags
);
DWORD
APIENTRY
TraceGetConsoleW(
IN DWORD dwTraceID,
OUT LPHANDLE lphConsole
);
DWORD
__cdecl
TracePrintfW(
IN DWORD dwTraceID,
IN LPCWSTR lpszFormat,
IN ... OPTIONAL
);
DWORD
__cdecl
TracePrintfExW(
IN DWORD dwTraceID,
IN DWORD dwFlags,
IN LPCWSTR lpszFormat,
IN ... OPTIONAL
);
DWORD
APIENTRY
TraceVprintfExW(
IN DWORD dwTraceID,
IN DWORD dwFlags,
IN LPCWSTR lpszFormat,
IN va_list arglist
);
DWORD
APIENTRY
TracePutsExW(
IN DWORD dwTraceID,
IN DWORD dwFlags,
IN LPCWSTR lpszString
);
DWORD
APIENTRY
TraceDumpExW(
IN DWORD dwTraceID,
IN DWORD dwFlags,
IN LPBYTE lpbBytes,
IN DWORD dwByteCount,
IN DWORD dwGroupSize,
IN BOOL bAddressPrefix,
IN LPCWSTR lpszPrefix
);
//////////////////////////////////////////////////////////////////////////////
// //
// Unicode entry-points macros //
// //
//////////////////////////////////////////////////////////////////////////////
#define TraceRegisterW(a) TraceRegisterExW(a,0)
#define TraceVprintfW(a,b,c) TraceVprintfExW(a,0,b,c)
#define TracePutsW(a,b) TracePutsExW(a,0,b)
#define TraceDumpW(a,b,c,d,e,f) TraceDumpExW(a,0,b,c,d,e,f)
//////////////////////////////////////////////////////////////////////////////
// //
// Code-page dependent entry-point macros //
// //
//////////////////////////////////////////////////////////////////////////////
#ifdef UNICODE
#define TraceRegister TraceRegisterW
#define TraceDeregister TraceDeregisterW
#define TraceDeregisterEx TraceDeregisterExW
#define TraceGetConsole TraceGetConsoleW
#define TracePrintf TracePrintfW
#define TraceVprintf TraceVprintfW
#define TracePuts TracePutsW
#define TraceDump TraceDumpW
#define TraceRegisterEx TraceRegisterExW
#define TracePrintfEx TracePrintfExW
#define TraceVprintfEx TraceVprintfExW
#define TracePutsEx TracePutsExW
#define TraceDumpEx TraceDumpExW
#else
#define TraceRegister TraceRegisterA
#define TraceDeregister TraceDeregisterA
#define TraceDeregisterEx TraceDeregisterExA
#define TraceGetConsole TraceGetConsoleA
#define TracePrintf TracePrintfA
#define TraceVprintf TraceVprintfA
#define TracePuts TracePutsA
#define TraceDump TraceDumpA
#define TraceRegisterEx TraceRegisterExA
#define TracePrintfEx TracePrintfExA
#define TraceVprintfEx TraceVprintfExA
#define TracePutsEx TracePutsExA
#define TraceDumpEx TraceDumpExA
#endif
//////////////////////////////////////////////////////////////////////////////
// //
// EVENT LOGGING FUNCTION PROTOTYPES //
// //
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// //
// ANSI prototypes //
// //
//////////////////////////////////////////////////////////////////////////////
VOID
APIENTRY
LogErrorA(
IN DWORD dwMessageId,
IN DWORD cNumberOfSubStrings,
IN LPSTR *plpwsSubStrings,
IN DWORD dwErrorCode
);
VOID
APIENTRY
LogEventA(
IN DWORD wEventType,
IN DWORD dwMessageId,
IN DWORD cNumberOfSubStrings,
IN LPSTR *plpwsSubStrings
);
//////////////////////////////////////////////////////////////////////////////
// //
// Unicode prototypes //
// //
//////////////////////////////////////////////////////////////////////////////
VOID
LogErrorW(
IN DWORD dwMessageId,
IN DWORD cNumberOfSubStrings,
IN LPWSTR *plpwsSubStrings,
IN DWORD dwErrorCode
);
VOID
LogEventW(
IN DWORD wEventType,
IN DWORD dwMessageId,
IN DWORD cNumberOfSubStrings,
IN LPWSTR *plpwsSubStrings
);
#ifdef UNICODE
#define LogError LogErrorW
#define LogEvent LogEventW
#else
#define LogError LogErrorA
#define LogEvent LogEventA
#endif
//////////////////////////////////////////////////////////////////////////////
// //
// The following functions allow the caller to specify the event source. //
// //
// Call RouterLogRegister with the strings which would be passed to //
// RegisterEventSource; this returns a handle which can be passed //
// to the functions RouterLogEvent and RouterLogEventData. //
// //
// Call RouterLogDeregister to close the handle. //
// //
// Macros are provided for the different kinds of event log entrys: //
// RouterLogError logs an error (EVENTLOG_ERROR_TYPE) //
// RouterLogWarning logs a warning (EVENTLOG_WARNING_TYPE) //
// RouterLogInformation logs information (EVENTLOG_INFORMATION_TYPE) //
// //
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// //
// ANSI prototypes //
// //
//////////////////////////////////////////////////////////////////////////////
HANDLE
RouterLogRegisterA(
LPCSTR lpszSource
);
VOID
RouterLogDeregisterA(
HANDLE hLogHandle
);
VOID
RouterLogEventA(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwMessageId,
IN DWORD dwSubStringCount,
IN LPSTR *plpszSubStringArray,
IN DWORD dwErrorCode
);
VOID
RouterLogEventDataA(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwMessageId,
IN DWORD dwSubStringCount,
IN LPSTR *plpszSubStringArray,
IN DWORD dwDataBytes,
IN LPBYTE lpDataBytes
);
VOID
RouterLogEventStringA(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwMessageId,
IN DWORD dwSubStringCount,
IN LPSTR *plpszSubStringArray,
IN DWORD dwErrorCode,
IN DWORD dwErrorIndex
);
VOID
__cdecl
RouterLogEventExA(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwErrorCode,
IN DWORD dwMessageId,
IN LPCSTR ptszFormat,
...
);
VOID
RouterLogEventValistExA(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwErrorCode,
IN DWORD dwMessageId,
IN LPCSTR ptszFormat,
IN va_list arglist
);
DWORD
RouterGetErrorStringA(
IN DWORD dwErrorCode,
OUT LPSTR * lplpszErrorString
);
#define RouterLogErrorA(h,msg,count,array,err) \
RouterLogEventA(h,EVENTLOG_ERROR_TYPE,msg,count,array,err)
#define RouterLogWarningA(h,msg,count,array,err) \
RouterLogEventA(h,EVENTLOG_WARNING_TYPE,msg,count,array,err)
#define RouterLogInformationA(h,msg,count,array,err) \
RouterLogEventA(h,EVENTLOG_INFORMATION_TYPE,msg,count,array,err)
#define RouterLogErrorDataA(h,msg,count,array,c,buf) \
RouterLogEventDataA(h,EVENTLOG_ERROR_TYPE,msg,count,array,c,buf)
#define RouterLogWarningDataA(h,msg,count,array,c,buf) \
RouterLogEventDataA(h,EVENTLOG_WARNING_TYPE,msg,count,array,c,buf)
#define RouterLogInformationDataA(h,msg,count,array,c,buf) \
RouterLogEventDataA(h,EVENTLOG_INFORMATION_TYPE,msg,count,array,c,buf)
#define RouterLogErrorStringA(h,msg,count,array,err,index) \
RouterLogEventStringA(h,EVENTLOG_ERROR_TYPE,msg,count,array, err,index)
#define RouterLogWarningStringA(h,msg,count,array,err,index) \
RouterLogEventStringA(h,EVENTLOG_WARNING_TYPE,msg,count,array,err,index)
#define RouterLogInformationStringA(h,msg,count,array, err,index) \
RouterLogEventStringA(h,EVENTLOG_INFORMATION_TYPE,msg,count,array,err,\
index)
//////////////////////////////////////////////////////////////////////////////
// //
// Unicode prototypes //
// //
//////////////////////////////////////////////////////////////////////////////
HANDLE
RouterLogRegisterW(
LPCWSTR lpszSource
);
VOID
RouterLogDeregisterW(
HANDLE hLogHandle
);
VOID
RouterLogEventW(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwMessageId,
IN DWORD dwSubStringCount,
IN LPWSTR *plpszSubStringArray,
IN DWORD dwErrorCode
);
VOID
RouterLogEventDataW(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwMessageId,
IN DWORD dwSubStringCount,
IN LPWSTR *plpszSubStringArray,
IN DWORD dwDataBytes,
IN LPBYTE lpDataBytes
);
VOID
RouterLogEventStringW(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwMessageId,
IN DWORD dwSubStringCount,
IN LPWSTR *plpszSubStringArray,
IN DWORD dwErrorCode,
IN DWORD dwErrorIndex
);
VOID
__cdecl
RouterLogEventExW(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwErrorCode,
IN DWORD dwMessageId,
IN LPCWSTR ptszFormat,
...
);
VOID
RouterLogEventValistExW(
IN HANDLE hLogHandle,
IN DWORD dwEventType,
IN DWORD dwErrorCode,
IN DWORD dwMessageId,
IN LPCWSTR ptszFormat,
IN va_list arglist
);
DWORD
RouterGetErrorStringW(
IN DWORD dwErrorCode,
OUT LPWSTR * lplpwszErrorString
);
#define RouterLogErrorW(h,msg,count,array,err) \
RouterLogEventW(h,EVENTLOG_ERROR_TYPE,msg,count,array,err)
#define RouterLogWarningW(h,msg,count,array,err) \
RouterLogEventW(h,EVENTLOG_WARNING_TYPE,msg,count,array,err)
#define RouterLogInformationW(h,msg,count,array,err) \
RouterLogEventW(h,EVENTLOG_INFORMATION_TYPE,msg,count,array,err)
#define RouterLogErrorDataW(h,msg,count,array,c,buf) \
RouterLogEventDataW(h,EVENTLOG_ERROR_TYPE,msg,count,array,c,buf)
#define RouterLogWarningDataW(h,msg,count,array,c,buf) \
RouterLogEventDataW(h,EVENTLOG_WARNING_TYPE,msg,count,array,c,buf)
#define RouterLogInformationDataW(h,msg,count,array,c,buf) \
RouterLogEventDataW(h,EVENTLOG_INFORMATION_TYPE,msg,count,array,c,buf)
#define RouterLogErrorStringW(h,msg,count,array,err,index) \
RouterLogEventStringW(h,EVENTLOG_ERROR_TYPE,msg,count,array,err,index)
#define RouterLogWarningStringW(h,msg,count,array,err,index) \
RouterLogEventStringW(h,EVENTLOG_WARNING_TYPE,msg,count,array,err,index)
#define RouterLogInformationStringW(h,msg,count,array,err,index) \
RouterLogEventStringW(h,EVENTLOG_INFORMATION_TYPE,msg,count,array,err,\
index)
#ifdef UNICODE
#define RouterLogRegister RouterLogRegisterW
#define RouterLogDeregister RouterLogDeregisterW
#define RouterLogEvent RouterLogEventW
#define RouterLogError RouterLogErrorW
#define RouterLogWarning RouterLogWarningW
#define RouterLogInformation RouterLogInformationW
#define RouterLogEventData RouterLogEventDataW
#define RouterLogErrorData RouterLogErrorDataW
#define RouterLogWarningData RouterLogWarningDataW
#define RouterLogInformationData RouterLogInformationDataW
#define RouterLogEventString RouterLogEventStringW
#define RouterLogEventEx RouterLogEventExW
#define RouterLogEventValistEx RouterLogEventValistExW
#define RouterLogErrorString RouterLogErrorStringW
#define RouterLogWarningString RouterLogWarningStringW
#define RouterLogInformationString RouterLogInformationStringW
#define RouterGetErrorString RouterGetErrorStringW
#
#else
#define RouterLogRegister RouterLogRegisterA
#define RouterLogDeregister RouterLogDeregisterA
#define RouterLogEvent RouterLogEventA
#define RouterLogError RouterLogErrorA
#define RouterLogWarning RouterLogWarningA
#define RouterLogInformation RouterLogInformationA
#define RouterLogEventData RouterLogEventDataA
#define RouterLogErrorData RouterLogErrorDataA
#define RouterLogWarningData RouterLogWarningDataA
#define RouterLogInformationData RouterLogInformationDataA
#define RouterLogEventString RouterLogEventStringA
#define RouterLogEventEx RouterLogEventExA
#define RouterLogEventValistEx RouterLogEventValistExA
#define RouterLogErrorString RouterLogErrorStringA
#define RouterLogWarningString RouterLogWarningStringA
#define RouterLogInformationString RouterLogInformationStringA
#define RouterGetErrorString RouterGetErrorStringA
#endif
//////////////////////////////////////////////////////////////////////////////
// //
// WORKER THREAD POOL FUNCTIONS //
// //
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// //
// definition of worker function passed in QueueWorkItem API //
// //
//////////////////////////////////////////////////////////////////////////////
typedef VOID (APIENTRY * WORKERFUNCTION)(PVOID);
//////////////////////////////////////////////////////////////////////////////
// //
// Function: Queues the supplied work item in the work queue. //
// //
// functionptr: function to be called must be of WORKERFUNCTION type //
// context: opaque ptr //
// serviceinalertablethread: if TRUE gets scheduled in //
// a alertably waiting thread that never dies //
// Returns: 0 (success) //
// Win32 error codes for cases like out of memory //
// //
//////////////////////////////////////////////////////////////////////////////
DWORD
APIENTRY
QueueWorkItem(
IN WORKERFUNCTION functionptr,
IN PVOID context,
IN BOOL serviceinalertablethread
);
//////////////////////////////////////////////////////////////////////////////
// //
// Function: Associates file handle with the completion port (all //
// asynchronous i/o on this handle will be queued to //
// the completion port) //
// //
// FileHandle: File handle to be associated with completion port //
// //
// CompletionProc: Procedure to be called when io associated with the file //
// handle completes. This function will be executed in //
// the context of non-alertable worker thread //
// //
//////////////////////////////////////////////////////////////////////////////
DWORD
APIENTRY
SetIoCompletionProc (
IN HANDLE FileHandle,
IN LPOVERLAPPED_COMPLETION_ROUTINE CompletionProc
);
//////////////////////////////////////////////////////////////////////////////
// //
// The following defines are included here as a hint on how the worker //
// thread pool is managed: //
// //
// There are NUM_ALERTABLE_THREADS permanent threads that never quit and //
// wait alertably on a alertable worker queue. These threads should solely //
// be used for work items that intiate asyncronous operation (file io, //
// waitable timer) that ABSOLUTELY require APCs to complete (preferable //
// method for IO is the usage of completio port API) //
// //
// There is a pool of the threads that wait on completion port //
// that used both for processing of IO and non-IO related work items //
// //
// The minimum number of threads is Number of processors //
// The maximum number of threads is MAX_WORKER_THREADS //
// //
// A new thread is created if worker queue has not been served for more //
// that WORK_QUEUE_TIMEOUT //
// The existing thread will be shut down if it is not used for more than //
// THREAD_IDLE_TIMEOUT //
// //
// Note that worker threads age guaranteed to be alive for at least //
// THREAD_IDLE_TIMEOUT after the last work item is executed. This timeout //
// is chosen such that bulk of IO request could be completed before it //
// expires. If it is not enough for your case, use alertable thread with //
// APC, or create your own thread. //
// //
// Note: changing these flags will not change anything. //
// //
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// //
// Number of alertable threads //
// //
//////////////////////////////////////////////////////////////////////////////
#define NUM_ALERTABLE_THREADS 2
//////////////////////////////////////////////////////////////////////////////
// //
// Max number of threads at any time //
// //
//////////////////////////////////////////////////////////////////////////////
#define MAX_WORKER_THREADS 10
//////////////////////////////////////////////////////////////////////////////
// //
// Time that the worker queue is not served before starting new thread //
// //
//////////////////////////////////////////////////////////////////////////////
#define WORK_QUEUE_TIMEOUT 1 //sec
//////////////////////////////////////////////////////////////////////////////
// //
// Time that thread has to be idle before exiting //
// //
//////////////////////////////////////////////////////////////////////////////
#define THREAD_IDLE_TIMEOUT 10 //sec
//////////////////////////////////////////////////////////////////////////////
// //
// ROUTER ASSERT DECLARATION //
// //
//////////////////////////////////////////////////////////////////////////////
VOID
RouterAssert(
IN PSTR pszFailedAssertion,
IN PSTR pszFileName,
IN DWORD dwLineNumber,
IN PSTR pszMessage OPTIONAL
);
#if DBG
#define RTASSERT(exp) \
if (!(exp)) \
RouterAssert(#exp, __FILE__, __LINE__, NULL)
#define RTASSERTMSG(msg, exp) \
if (!(exp)) \
RouterAssert(#exp, __FILE__, __LINE__, msg)
#else
#define RTASSERT(exp)
#define RTASSERTMSG(msg, exp)
#endif
//////////////////////////////////////////////////////////////////////////////
// //
// REGISTRY CONFIGURATION FUNCTIONS //
// //
// The following definitions are used to read configuration information //
// about installed protocols. //
// //
// Call 'MprSetupProtocolEnum' to enumerate the routing-protocols //
// for transport 'dwTransportId'. This fills an array with entries //
// of type 'MPR_PROTOCOL_0'. //
// //
// The array loaded can be destroyed by calling 'MprSetupProtocolFree'. //
// //
//////////////////////////////////////////////////////////////////////////////
#define RTUTILS_MAX_PROTOCOL_NAME_LEN 40
#define RTUTILS_MAX_PROTOCOL_DLL_LEN 48
//
// the below two names should not be used
//
#ifndef MAX_PROTOCOL_NAME_LEN
#define MAX_PROTOCOL_NAME_LEN RTUTILS_MAX_PROTOCOL_NAME_LEN
#else
#undef MAX_PROTOCOL_NAME_LEN
#endif
#define MAX_PROTOCOL_DLL_LEN RTUTILS_MAX_PROTOCOL_DLL_LEN
typedef struct _MPR_PROTOCOL_0 {
DWORD dwProtocolId; // e.g. IP_RIP
WCHAR wszProtocol[RTUTILS_MAX_PROTOCOL_NAME_LEN+1]; // e.g. "IPRIP"
WCHAR wszDLLName[RTUTILS_MAX_PROTOCOL_DLL_LEN+1]; // e.g. "iprip2.dll"
} MPR_PROTOCOL_0;
DWORD APIENTRY
MprSetupProtocolEnum(
IN DWORD dwTransportId,
OUT LPBYTE* lplpBuffer, // MPR_PROTOCOL_0
OUT LPDWORD lpdwEntriesRead
);
DWORD APIENTRY
MprSetupProtocolFree(
IN LPVOID lpBuffer
);
//////////////////////////////////////////////////////////////////////////////
// Extensions to Rtutils to improve worker thread utilization. //
// //
//////////////////////////////////////////////////////////////////////////////
#define ROUTING_RESERVED
#define OPT1_1
#define OPT1_2
#define OPT2_1
#define OPT2_2
#define OPT3_1
#define OPT3_2
//
// When everyone is migrated to using Winsock2
//
#if 0
//==========================================================================================================//
//==========================================================================================================//
// ASYNC_SOCKET_DATA structure is used to pass / receive back data from an //
// asynchronous wait recv from call //
typedef struct _ASYNC_SOCKET_DATA {
OVERLAPPED Overlapped; // reserved. not to be used
IN WSABUF WsaBuf; // WsaBuf.buf to be initialized to point to buffer
// WsaBuf.len set to the length of the buffer
OUT SOCKADDR_IN SrcAddress; // AsyncWsaRecvFrom fills this with the source address of the packet
OUT DWORD NumBytesReceived; // AsyncWsaRecvFrom fills this with the number of bytes returned in the packet
IN OUT DWORD Flags; // Used to set flags for WSARecvFrom, and returns the flags set by WSARecvFrom
OUT DWORD Status; // status returned by IO Completion Port
IN WORKERFUNCTION pFunction; // Function to be executed on receiving packet
IN PVOID pContext; // context for the above function
} ASYNC_SOCKET_DATA, *PASYNC_SOCKET_DATA;
// AsyncSocketInit() binds the socket to the IOCompletionPort. This should be called//
// after the socket is created and before AsyncWsaRecvFrom() call is made //
DWORD
APIENTRY
AsyncSocketInit (
SOCKET sock
);
// This should be called only after the appropriate fields in SockData are initialized //
// This sets up an asynchronous WSARecvFrom(), and on its return dispatches the //
// function to a worker thread. It should be remembered that the function will run in //
// a worker thread which might later on be deleted. So SetWaitableTimer() and //
// asynchronous receive calls should be avoided unless you are sure that it would not be//
// a problem. It is adviced that if you want the function to run in an alertable thread,//
// then have the callback function queue a work item to alertable thread. Queue work //
// items to alertable worker threads for SetWaitableTimer() and async receives. //
// One must not make many AsyncWSArecvFrom() calls, as the buffer are non-paged //
DWORD
APIENTRY
AsyncWSARecvFrom (
SOCKET sock,
PASYNC_SOCKET_DATA pSockData
);
#endif // all winsock2 functions
//==========================================================================================================//
//==========================================================================================================//
// forward declarations
struct _WAIT_THREAD_ENTRY;
struct _WT_EVENT_ENTRY;
typedef struct _WT_TIMER_ENTRY {
LONGLONG te_Timeout;
WORKERFUNCTION te_Function;
PVOID te_Context;
DWORD te_ContextSz;
BOOL te_RunInServer;
DWORD te_Status;
#define TIMER_INACTIVE 3
#define TIMER_ACTIVE 4
DWORD te_ServerId;
struct _WAIT_THREAD_ENTRY *teP_wte;
LIST_ENTRY te_ServerLinks;
LIST_ENTRY te_Links;
BOOL te_Flag; //todo: not used
DWORD te_TimerId;
} WT_TIMER_ENTRY, *PWT_TIMER_ENTRY;
typedef struct _WT_WORK_ITEM {
WORKERFUNCTION wi_Function; // function to call
PVOID wi_Context; // context passed into function call
DWORD wi_ContextSz; // size of context, used for allocating
BOOL wi_RunInServer; // run in wait server thread or get queued to some worker thread
struct _WT_EVENT_ENTRY *wiP_ee;
LIST_ENTRY wi_ServerLinks;
LIST_ENTRY wi_Links; //todo not req // link to next and prev element
} WT_WORK_ITEM, *PWT_WORK_ITEM;
#define WT_EVENT_BINDING WT_WORK_ITEM
#define PWT_EVENT_BINDING PWT_WORK_ITEM
//
// WT_EVENT_ENTRY
//
typedef struct _WT_EVENT_ENTRY {
HANDLE ee_Event;
BOOL ee_bManualReset; // is the event manually reset
BOOL ee_bInitialState; // is the initial state of the event active
BOOL ee_bDeleteEvent; // was the event created as part of createWaitEvent
DWORD ee_Status; // current status of the event entry
BOOL ee_bHighPriority;
LIST_ENTRY eeL_wi;
BOOL ee_bSignalSingle; // signal single function or multiple functions // how many functions to activate when event signalled (default:1)
BOOL ee_bOwnerSelf; // the owner if the client which create this event
INT ee_ArrayIndex; // index in the events array if active
DWORD ee_ServerId; // Id of server: used while deleting
struct _WAIT_THREAD_ENTRY *eeP_wte; // pointer to wait thread entry
LIST_ENTRY ee_ServerLinks; // used by wait server thread
LIST_ENTRY ee_Links; // used by client
DWORD ee_RefCount;
BOOL ee_bFlag; //todo: notused // reserved for use during deletion
DWORD ee_EventId; //todo: remove it, being used only for testing/debugging
} WT_EVENT_ENTRY, *PWT_EVENT_ENTRY;
// PROTOTYPES OF FUNCTIONS USED IN THIS FILE ONLY
//
// used by client to create a wait event
// context size should be 0 if you are passing a dword instead of a pointer
// if pEvent field is set, then lpName and security attributes are ignored
// if pFunction is NULL, then pContext, dwContextSz, and bRunInServerContext are ignored
PWT_EVENT_ENTRY
APIENTRY
CreateWaitEvent (
//IN PWT_EVENT_ENTRY pEventEntry, // handle to event entry if initialized by others
IN HANDLE pEvent OPT1_1, // handle to event if already created
IN LPSECURITY_ATTRIBUTES lpEventAttributes OPT1_2, // pointer to security attributes
IN BOOL bManualReset,
IN BOOL bInitialState,
IN LPCTSTR lpName OPT1_2, // pointer to event-object name
IN BOOL bHighPriority, // create high priority event
IN WORKERFUNCTION pFunction OPT2_1, // if null, means will be set by other clients
IN PVOID pContext OPT2_1, // can be null
IN DWORD dwContextSz OPT2_1, // size of context: used for allocating context to functions
IN BOOL bRunInServerContext OPT2_1 // run in server thread or get dispatched to worker thread
);
//dwContextSz should be 0 if a dword is being passed. >0 only if pointer to block of that size is being passed.
PWT_EVENT_BINDING
APIENTRY
CreateWaitEventBinding (
IN PWT_EVENT_ENTRY pee,
IN WORKERFUNCTION pFunction,
IN PVOID pContext,
IN DWORD dwContextSz,
IN BOOL bRunInServerContext
);
PWT_TIMER_ENTRY
APIENTRY
CreateWaitTimer (
IN WORKERFUNCTION pFunction,
IN PVOID pContext,
IN DWORD dwContextSz,
IN BOOL bRunInServerContext
);
DWORD
APIENTRY
DeRegisterWaitEventBindingSelf (
IN PWT_EVENT_BINDING pwiWorkItem
);
DWORD
APIENTRY
DeRegisterWaitEventBinding (
IN PWT_EVENT_BINDING pwiWorkItem
);
//all the events and timers should be registered with one waitThread server
//todo: change the above requirement
DWORD
APIENTRY
DeRegisterWaitEventsTimers (
PLIST_ENTRY pLEvents, // list of events linked by ee_Links field
PLIST_ENTRY pLTimers // list of timers linked by te_Links field:
//these lists can be a single list entry, or a multiple entry list with a list header entry.
);
// this should be used only when called within a server thread
DWORD
APIENTRY
DeRegisterWaitEventsTimersSelf (
IN PLIST_ENTRY pLEvents,
IN PLIST_ENTRY pLTimers
);
DWORD
APIENTRY
RegisterWaitEventBinding (
IN PWT_EVENT_BINDING pwiWorkItem
);
// Register the client with the wait thread
DWORD
APIENTRY
RegisterWaitEventsTimers (
IN PLIST_ENTRY pLEventsToAdd,
IN PLIST_ENTRY pLTimersToAdd
);
DWORD
APIENTRY
UpdateWaitTimer (
IN PWT_TIMER_ENTRY pte,
IN LONGLONG *time
);
VOID
APIENTRY
WTFree (
PVOID ptr
);
//used to free wait-event. Should be deallocated using DeRegisterWaitEventsTimers
//This function is to be used only when the events have not been registered
VOID
APIENTRY
WTFreeEvent (
IN PWT_EVENT_ENTRY peeEvent
);
//used to free wait-timer. Should be deallocated using DeRegisterWaitEventsTimers
//This function is to be used only when the timers have not been registered
VOID
APIENTRY
WTFreeTimer (
IN PWT_TIMER_ENTRY pteTimer
);
VOID
APIENTRY
DebugPrintWaitWorkerThreads (
DWORD dwDebugLevel
);
#define DEBUGPRINT_FILTER_NONCLIENT_EVENTS 0x2
#define DEBUGPRINT_FILTER_EVENTS 0x4
#define DEBUGPRINT_FILTER_TIMERS 0x8
//
//ERROR VALUES
//
#define ERROR_WAIT_THREAD_UNAVAILABLE 1
#define ERROR_WT_EVENT_ALREADY_DELETED 2
#define TIMER_HIGH(time) \
(((LARGE_INTEGER*)&time)->HighPart)
#define TIMER_LOW(time) \
(((LARGE_INTEGER*)&time)->LowPart)
#ifdef __cplusplus
}
#endif
#endif // ___ROUTING_RTUTILS_H__
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