C++ GetLock函数代码示例

	void PrintAllocations( )
	{
		GetLock( ).lock( );
#ifdef DEBUG_MEMORY
		Header* header = GetBottom( )->Next;

		std::string str = "\n";
		while ( header )
		{
			if ( !header->Free )
				str += "\tMEMORY LEAK\t\t" + std::string( header->File ) + ":" + std::to_string( header->Line ) + "\t\t" + std::to_string( header->Size ) + "\n";

			header = header->Next;
		}
		header = GetTop( )->Next;
		while ( header )
		{
			if ( !header->Free )
				str += "\tMEMORY LEAK\t\t" + std::string( header->File ) + ":" + std::to_string( header->Line ) + "\t\t" + std::to_string( header->Size ) + "\n";

			header = header->Next;
		}
		str += "\n";
#if PLATFORM == PLATFORM_WINDOWS
		OutputDebugStringA( str.c_str( ) );
#else
		printf( "%s", str.c_str( ) );
#endif
#endif
		GetLock( ).unlock( );
	}

XnStatus XnSensorDepthStream::SetMirror(XnBool bIsMirrored)
{
	XnStatus nRetVal = XN_STATUS_OK;

	xnOSEnterCriticalSection(GetLock());

	// set firmware mirror
	XnBool bFirmwareMirror = (bIsMirrored == TRUE && m_Helper.GetFirmwareVersion() >= XN_SENSOR_FW_VER_5_0);

	nRetVal = m_Helper.SimpleSetFirmwareParam(m_FirmwareMirror, (XnUInt16)bFirmwareMirror);
	if (nRetVal != XN_STATUS_OK)
	{
		xnOSLeaveCriticalSection(GetLock());
		return (nRetVal);
	}

	// update prop
	nRetVal = XnDepthStream::SetMirror(bIsMirrored);

	xnOSLeaveCriticalSection(GetLock());
	XN_IS_STATUS_OK(nRetVal);

	if (m_depthUtilsHandle != NULL)
	{
		nRetVal = DepthUtilsSetDepthConfiguration(m_depthUtilsHandle, GetXRes(), GetYRes(), GetOutputFormat(), IsMirrored());
		XN_IS_STATUS_OK(nRetVal);
	}

	return (XN_STATUS_OK);
}

static BOOL Intercept(THREADID tid, DEBUGGING_EVENT eventType, CONTEXT *ctxt, VOID *)
{
    if (eventType == DEBUGGING_EVENT_BREAKPOINT)
    {
        // When the child thread reaches the breakpoint in Breakpoint(), wait for the main
        // thread to reach the One() function.  If the main thread is not there yet, squash the
        // breakpoint and move the PC back to the start of the Breakpoint() function.  This will
        // delay a while and then re-trigger the breakpoint.
        //
        ADDRINT pc = PIN_GetContextReg(ctxt, REG_INST_PTR);
        if (pc == BreakpointLocation && !AllowBreakpoint)
        {
            PIN_SetContextReg(ctxt, REG_INST_PTR, BreakpointFunction);
            GetLock(&Lock, 1);
            std::cout << "Squashing breakpoint at 0x" << std::hex << pc << " on thread " << std::dec << tid << std::endl;
            ReleaseLock(&Lock);
            return FALSE;
        }

        GetLock(&Lock, 1);
        std::cout << "Stopping at breakpoint at 0x" << std::hex << pc << " on thread " << std::dec << tid << std::endl;
        ReleaseLock(&Lock);
        return TRUE;
    }

    if (eventType == DEBUGGING_EVENT_ASYNC_BREAK)
    {
        // When the child thread triggers the breakpoint, we should be at the One() function.
        // Change the PC to the Two() function, which is the point of this test.  We want to
        // make sure Pin properly handles the change of PC in this case.
        //
        ADDRINT pc = PIN_GetContextReg(ctxt, REG_INST_PTR);
        if (pc == OneFunction)
        {
            PIN_SetContextReg(ctxt, REG_INST_PTR, TwoFunction);
            GetLock(&Lock, 1);
            std::cout << "Changing ASYNC BREAK PC to Two() on thread " << std::dec << tid << std::endl;
            ReleaseLock(&Lock);
            return TRUE;
        }

        // If the PC is not at the One() function, the child thread has probably hit some breakpoint
        // other than the one at Breakpoint().  (E.g. an internal breakpoint set by GDB.)  Don't
        // change the PC in such a case.
        //
        GetLock(&Lock, 1);
        std::cout << "ASYNC_BREAK at 0x" << std::hex << pc << " on thread " << std::dec << tid << std::endl;
        ReleaseLock(&Lock);
        return TRUE;
    }

    GetLock(&Lock, 1);
    std::cout << "FAILURE: Unexpected debugging event type" << std::endl;
    ReleaseLock(&Lock);
    std::exit(1);
}

int add_or_update_alarm(uint8_t hour, uint8_t min, uint8_t mode,
                         uint8_t repeat_factor, char *name)
{
    pthread_mutex_t *bucket_mtx = GetLock(hour, min);
    pthread_mutex_lock(bucket_mtx);
    AlarmClockInfo *header = GetHeader(hour, min);
    AlarmClockInfo *temp = header;
    // Check whether an existing entry should be updated
    while (temp)
    {
        if (temp->hour == hour && temp->min == min)
        {
            temp->mode = mode;
            temp->repeat_factor = repeat_factor;
            strcpy(temp->name, name);
            pthread_mutex_unlock(bucket_mtx);
            return 0;
        }
        temp = temp->next;
    }
    // A new entry is inserted
    AlarmClockInfo *naci = CreateNewInfo(hour,min,mode,repeat_factor,name);
    naci->next = header;
    *AC_TABLE_ENTRY(hour,min) = naci;
    pthread_mutex_unlock(bucket_mtx);
    return 1;
}

// Return 1 if found and removed, otherwise return 0
int cancel_alarm(uint8_t hour, uint8_t min, int play)
{
    pthread_mutex_t *bucket_mtx = GetLock(hour, min);
    pthread_mutex_lock(bucket_mtx);
    AlarmClockInfo *cand = GetHeader(hour, min);
    AlarmClockInfo *prev = NULL;
    while (cand)
    {
        if (cand->hour == hour && cand->min == min)
        {
            // Optionally, play the alarm here before essentially removing it
            // ...
    
            if (play)
                ; // sound an alarm
            if (!prev) *AC_TABLE_ENTRY(hour, min) = cand->next;
            else prev->next = cand->next;
            free(cand);
            pthread_mutex_unlock(bucket_mtx);
            return 1;
        }
        prev = cand;
        cand = cand->next;
    }
    pthread_mutex_unlock(bucket_mtx);
    return 0;
}

//-----------------------------------------
// функция логирует события мыши
//-----------------------------------------
bool TKeyLogger::LogMouse(HWND Wnd, int X, int Y, int Button)
{
	//------  блокируем код --------
	TLock L = GetLock();
	//------------------------------
	return true;
}

void AccountMgr::ClearPlayerDataCache(ObjectGuid guid)
{
    if (!guid || !guid.IsPlayer())
        return;

    PlayerDataCache const* cache = GetPlayerDataCache(guid, false);

    if (cache)
    {
        uint32 accId = cache->account;

        WriteGuard Guard(GetLock());
        PlayerDataCacheMap::iterator itr = mPlayerDataCacheMap.find(guid);
        if (itr != mPlayerDataCacheMap.end())
            mPlayerDataCacheMap.erase(itr);

        RafLinkedMap::iterator itr1 = mRAFLinkedMap.find(std::pair<uint32,bool>(accId, true));
        if (itr1 != mRAFLinkedMap.end())
            mRAFLinkedMap.erase(itr1);
        itr1 = mRAFLinkedMap.find(std::pair<uint32,bool>(accId, false));
        if (itr1 != mRAFLinkedMap.end())
            mRAFLinkedMap.erase(itr1);
    }

}

RafLinkedList* AccountMgr::GetRAFAccounts(uint32 accid, bool referred)
{

    RafLinkedMap::iterator itr = mRAFLinkedMap.find(std::pair<uint32,bool>(accid, referred));
    if (itr == mRAFLinkedMap.end())
    {
        QueryResult* result;

        if (referred)
            result = LoginDatabase.PQuery("SELECT `friend_id` FROM `account_friends` WHERE `id` = %u AND `expire_date` > NOW() LIMIT %u", accid, sWorld.getConfig(CONFIG_UINT32_RAF_MAXREFERERS));
        else
            result = LoginDatabase.PQuery("SELECT `id` FROM `account_friends` WHERE `friend_id` = %u AND `expire_date` > NOW() LIMIT %u", accid, sWorld.getConfig(CONFIG_UINT32_RAF_MAXREFERALS));

        RafLinkedList acclist;

        if (result)
        {
            do
            {
                Field* fields = result->Fetch();
                uint32 refaccid = fields[0].GetUInt32();
                acclist.push_back(refaccid);
            }
            while (result->NextRow());
            delete result;
        }
        ReadGuard Guard(GetLock());
        mRAFLinkedMap.insert(RafLinkedMap::value_type(std::pair<uint32,bool>(accid, referred), acclist));
        itr = mRAFLinkedMap.find(std::pair<uint32,bool>(accid, referred));
    }

    return &itr->second;
}

// This routine is executed each time malloc is called.
VOID BeforeMalloc( int size, THREADID threadid )
{
    GetLock(&lock, threadid+1);
    fprintf(out, "thread %d entered malloc(%d)\n", threadid, size);
    fflush(out);
    ReleaseLock(&lock);
}

int main(int argc, char **argv)
{
   if(InitLocks("qlite", "sapc13", 5468))
   {
      if(GetLock(1, 5)==0)
         printf("Got lock!\n");
      else
         printf("Lock denied!\n");

/*
      if(GetLock(1, 5)==0)
         printf("Got lock!\n");
      else
         printf("Lock denied!\n");

      if(ReleaseLock(1))
         printf("Lock released!\n");
      else
         printf("Couldn't release lock!\n");

      if(GetLock(1, 5)==0)
         printf("Got lock!\n");
      else
         printf("Lock denied!\n");

      if(ReleaseLock(2))
         printf("Lock released!\n");
      else
         printf("Couldn't release lock!\n");
*/
   }

   return(0);
}

// Note that opening a file in a callback is only supported on Linux systems.
// See buffer-win.cpp for how to work around this issue on Windows.
//
// This routine is executed every time a thread is created.
VOID ThreadStart(THREADID threadid, CONTEXT *ctxt, INT32 flags, VOID *v)
{
    GetLock(&lock, threadid+1);
    fprintf(out, "thread begin %d\n",threadid);
    fflush(out);
    ReleaseLock(&lock);
}

T* HashMapHolder<T>::Find(ObjectGuid guid)
{
    boost::shared_lock<boost::shared_mutex> lock(*GetLock());

    typename MapType::iterator itr = GetContainer().find(guid);
    return (itr != GetContainer().end()) ? itr->second : NULL;
}

int
C_File::AddLock( LockStruct *ls, BOOL bWait )
{
	C_FileCritSect	cCS0( this, CRITSECT0 );
	LockStruct *lsAux = GetLock( ls );
	if( lsAux ){
		lsAux->iCount++;
		if( ls ){
			delete ls;
		}
		return( OK );
	} else {
		if( !IsLocked( ls, TRUE ) ){
			ls->iCount++;
			if( _LockTable [ iLine ]->Add( ls, TAIL ) == OK ){
				if( RealLock( ls, bWait ) == OK ){
					return( OK );
				} else {
					_LockTable [ iLine ]->Refresh( NULL );
					_LockTable [ iLine ]->Del();
				}
			}
		}
	}
	return( !OK );
}

void OPFResource::AddSigilVersionMeta()
{
    QWriteLocker locker(&GetLock());
    QString source = CleanSource::ProcessXML(GetText(),"application/oebps-package+xml");
    OPFParser p;
    p.parse(source);
    for (int i=0; i < p.m_metadata.count(); ++i) {
        MetaEntry me = p.m_metadata.at(i);
        if ((me.m_name == "meta") && (me.m_atts.contains("name"))) {  
            QString name = me.m_atts[QString("name")];
            if (name == SIGIL_VERSION_META_NAME) {
                me.m_atts["content"] = QString(SIGIL_VERSION);
                p.m_metadata.replace(i, me);
                UpdateText(p);
                return;
            }
        }
    }
    MetaEntry me;
    me.m_name = "meta";
    me.m_atts[QString("name")] = QString("Sigil version");
    me.m_atts[QString("content")] = QString(SIGIL_VERSION);
    p.m_metadata.append(me);
    UpdateText(p);
}

VOID  Image(IMG img, VOID *v){
        char    szFilePath[260];
        unsigned long index;
        
        GetLock(&lock, 1);
        if (process_start != 0){
                ReleaseLock(&lock);
                return;
        }
        if (IMG_Valid(img)){
                memset(szFilePath, 0, sizeof(szFilePath));
                strncpy(szFilePath, IMG_Name(img).c_str(), sizeof(szFilePath)-1);
                index = 0;
                while (szFilePath[index] != 0){
                        szFilePath[index] = tolower(szFilePath[index]);
                        index++;
                }
                
                if (strstr(szFilePath, KnobProcessToTrace.Value().c_str())){
                        process_start = IMG_LowAddress(img);
                        process_end   = IMG_HighAddress(img);
                }
        }
        ReleaseLock(&lock);
        
}