Source code of Windows XP (NT5)
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//
// MODULE: TOPICSHOP.CPP
//
// PURPOSE: Provide a means of "publishing" troubleshooter topics. This is where a
// working thread goes to obtain a CTopic to use.
//
// COMPANY: Saltmine Creative, Inc. (206)-284-7511 [email protected]
//
// AUTHOR: Joe Mabel
//
// ORIGINAL DATE: 9-10-98
//
// NOTES:
//
// Version Date By Comments
//--------------------------------------------------------------------
// V3.0 09-10-98 JM
//
#pragma warning(disable:4786)
#include "stdafx.h"
#include <algorithm>
#include "TopicShop.h"
#include "event.h"
#include "apiwraps.h"
#include "CharConv.h"
#include "bn.h"
#include "propnames.h"
#ifdef LOCAL_TROUBLESHOOTER
#include "CHMFileReader.h"
#endif
//////////////////////////////////////////////////////////////////////
// CTopicInCatalog
//////////////////////////////////////////////////////////////////////
CTopicInCatalog::CTopicInCatalog(const CTopicInfo & topicinfo) :
m_topicinfo(topicinfo),
m_bTopicInfoMayNotBeCurrent(false),
m_bInited(false),
m_countLoad(CCounterLocation::eIdTopicLoad, topicinfo.GetNetworkName()),
m_countLoadOK(CCounterLocation::eIdTopicLoadOK, topicinfo.GetNetworkName()),
m_countEvent(CCounterLocation::eIdTopicEvent, topicinfo.GetNetworkName()),
m_countHit(CCounterLocation::eIdTopicHit, topicinfo.GetNetworkName()),
m_countHitNewCookie(CCounterLocation::eIdTopicHitNewCookie, topicinfo.GetNetworkName()),
m_countHitOldCookie(CCounterLocation::eIdTopicHitOldCookie, topicinfo.GetNetworkName())
{
::InitializeCriticalSection( &m_csTopicinfo);
m_hev = ::CreateEvent(
NULL,
TRUE, // any number of (working) threads may be released on signal
FALSE, // initially non-signalled
NULL);
if (! m_hev)
{
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T(""),
_T(""),
EV_GTS_ERROR_EVENT );
// Simulate a bad alloc exception in this case.
// This exception will be caught by the caller if the new call has been
// properly wrapped in a try...catch() block. Only known caller is
// CTopicShop::AddTopic() which handles this properly.
throw bad_alloc();
}
m_countEvent.Increment();
}
CTopicInCatalog::~CTopicInCatalog()
{
if (m_hev)
::CloseHandle(m_hev);
::DeleteCriticalSection( &m_csTopicinfo);
}
CTopicInfo CTopicInCatalog::GetTopicInfo() const
{
::EnterCriticalSection(&m_csTopicinfo);
CTopicInfo ret(m_topicinfo);
::LeaveCriticalSection(&m_csTopicinfo);
return ret;
}
void CTopicInCatalog::SetTopicInfo(const CTopicInfo &topicinfo)
{
::EnterCriticalSection(&m_csTopicinfo);
m_topicinfo = topicinfo;
m_bTopicInfoMayNotBeCurrent = true;
::LeaveCriticalSection(&m_csTopicinfo);
}
// Just let this object know to increment the hit count
void CTopicInCatalog::CountHit(bool bNewCookie)
{
m_countHit.Increment();
if (bNewCookie)
m_countHitNewCookie.Increment();
else
m_countHitOldCookie.Increment();
}
// Obtain a CP_TOPIC as a pointer to the topic, if that topic is already built.
// As long as a CP_TOPIC remains undeleted, the associated CTopic is guaranteed to
// remain undeleted.
// Warning: this function will return with a null topic if topic is not yet built.
// Must test for null with CP_TOPIC::IsNull(). Can't test a smart pointer for null
// with ==.
CP_TOPIC & CTopicInCatalog::GetTopicNoWait(CP_TOPIC &cpTopic) const
{
cpTopic = m_cpTopic;
return cpTopic;
}
// Obtain a CP_TOPIC as a pointer to the topic.
// Wait as necessary for that topic to be built.
// Warning: this function will return with a null topic if topic cannot be built.
// As long as a CP_TOPIC remains undeleted, the associated CTopic is guaranteed to
// remain undeleted.
// Warning: this function may have to wait for TopicInCatalog.m_cpTopic to be built.
CP_TOPIC & CTopicInCatalog::GetTopic(CP_TOPIC &cpTopic) const
{
if (!m_bInited)
{
// Wait for a set period, if failure then log error msg and wait infinite.
WAIT_INFINITE( m_hev );
}
return GetTopicNoWait(cpTopic);
}
// to be called by the TopicBuilderTask thread
void CTopicInCatalog::Init(const CTopic* pTopic)
{
m_countLoad.Increment();
if(pTopic)
{
m_cpTopic = pTopic;
m_countLoadOK.Increment();
}
if(pTopic || m_cpTopic.IsNull())
m_bInited = true;
::SetEvent(m_hev);
}
// Just let this object know to increment the count of changes detected.
void CTopicInCatalog::CountChange()
{
m_countEvent.Increment();
}
CTopicInCatalog::TopicStatus CTopicInCatalog::GetTopicStatus() const
{
if (!m_bInited)
return eNotInited;
else if(m_cpTopic.IsNull())
return eFail;
else
return eOK;
}
bool CTopicInCatalog::GetTopicInfoMayNotBeCurrent() const
{
::EnterCriticalSection(&m_csTopicinfo);
bool bRet= m_bTopicInfoMayNotBeCurrent;
::LeaveCriticalSection(&m_csTopicinfo);
return bRet;
}
void CTopicInCatalog::TopicInfoIsCurrent()
{
::EnterCriticalSection(&m_csTopicinfo);
m_bTopicInfoMayNotBeCurrent = false;
::LeaveCriticalSection(&m_csTopicinfo);
}
//////////////////////////////////////////////////////////////////////
// CTemplateInCatalog
//////////////////////////////////////////////////////////////////////
CTemplateInCatalog::CTemplateInCatalog( const CString & strTemplate ) :
m_strTemplate( strTemplate ),
m_countLoad(CCounterLocation::eIdTopicLoad, strTemplate),
m_countLoadOK(CCounterLocation::eIdTopicLoadOK, strTemplate),
m_countEvent(CCounterLocation::eIdTopicEvent, strTemplate),
m_countHit(CCounterLocation::eIdTopicHit, strTemplate),
m_bInited( false )
{
m_hev = ::CreateEvent(
NULL,
TRUE, // any number of (working) threads may be released on signal
FALSE, // initially non-signalled
NULL);
if (! m_hev)
{
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T(""),
_T(""),
EV_GTS_ERROR_EVENT );
// Simulate a bad alloc exception in this case.
// This exception will be caught by the caller if the new call has been
// properly wrapped in a try...catch() block.
throw bad_alloc();
}
m_countEvent.Increment();
}
CTemplateInCatalog::~CTemplateInCatalog()
{
if (m_hev)
::CloseHandle(m_hev);
}
const CString & CTemplateInCatalog::GetTemplateInfo() const
{
return m_strTemplate;
}
// Just let this object know to increment the hit count
void CTemplateInCatalog::CountHit( bool bNewCookie )
{
m_countHit.Increment();
}
// Obtain a CP_TEMPLATE as a pointer to the template, if that template is already built.
// As long as a CP_TEMPLATE remains undeleted, the associated CAPGTSHTIReader is guaranteed to
// remain undeleted.
// Warning: this function will return with a null template if template is not yet built.
// Must test for null with CP_TEMPLATE::IsNull(). Can't test a smart pointer for null
// with ==.
CP_TEMPLATE & CTemplateInCatalog::GetTemplateNoWait( CP_TEMPLATE &cpTemplate ) const
{
cpTemplate= m_cpTemplate;
return cpTemplate;
}
// Obtain a CP_TEMPLATE as a pointer to the template.
// Wait as necessary for that template to be built.
// Warning: this function will return with a null template if template cannot be built.
// As long as a CP_TEMPLATE remains undeleted, the associated CAPGTSHTIReader is guaranteed to
// remain undeleted.
// Warning: this function may have to wait for TopicInCatalog.m_cpTemplate to be built.
CP_TEMPLATE & CTemplateInCatalog::GetTemplate( CP_TEMPLATE &cpTemplate ) const
{
if (!m_bInited)
{
// Wait for a set period, if failure then log error msg and wait infinite.
WAIT_INFINITE( m_hev );
}
return GetTemplateNoWait( cpTemplate );
}
// to be called by the TopicBuilderTask thread
void CTemplateInCatalog::Init( const CAPGTSHTIReader* pTemplate )
{
m_countLoad.Increment();
if (pTemplate)
{
m_cpTemplate= pTemplate;
m_countLoadOK.Increment();
}
if (pTemplate || m_cpTemplate.IsNull())
m_bInited = true;
::SetEvent(m_hev);
}
// Just let this object know to increment the count of changes detected.
void CTemplateInCatalog::CountChange()
{
m_countEvent.Increment();
}
// Just let this object know to increment the count of failures detected.
void CTemplateInCatalog::CountFailed()
{
// The load failed so increment the count of attempted loads.
m_countLoad.Increment();
}
CTemplateInCatalog::TemplateStatus CTemplateInCatalog::GetTemplateStatus() const
{
if (!m_bInited)
return eNotInited;
else if(m_cpTemplate.IsNull())
return eFail;
else
return eOK;
}
DWORD CTemplateInCatalog::CountOfFailedLoads() const
{
return( m_countLoad.GetTotal() - m_countLoadOK.GetTotal() );
}
/////////////////////////////////////////////////////////////////////
// CTopicShop::CTopicBuildQueue
// This class does the bulk of its work on a separate thread.
// The thread is created in the constructor by starting static function
// CTopicShop::CTopicBuildQueue::TopicBuilderTask.
// That function, in turn does its work by calling private members of this class that
// are specific to use on the TopicBuilderTask thread.
// When this goes out of scope, its own destructor calls ShutDown to stop the thread,
// waits for the thread to shut.
// The following method is available for other threads communicating with that thread:
// CTopicShop::CTopicBuildQueue::RequestBuild
//////////////////////////////////////////////////////////////////////
CTopicShop::CTopicBuildQueue::CTopicBuildQueue( CTopicCatalog & TopicCatalog,
CTemplateCatalog & TemplateCatalog)
: m_TopicCatalog (TopicCatalog),
m_TemplateCatalog( TemplateCatalog ),
m_eCurrentlyBuilding(eUnknown),
m_bShuttingDown (false),
m_dwErr(0),
m_ThreadStatus(eBeforeInit),
m_time(0)
{
enum {eHevBuildReq, eHevShut, eThread, eOK} Progress = eHevBuildReq;
SetThreadStatus(eBeforeInit);
m_hevBuildRequested = ::CreateEvent(
NULL,
FALSE, // release one thread (the TopicBuilderTask) on signal
FALSE, // initially non-signalled
NULL);
if (m_hevBuildRequested)
{
Progress = eHevShut;
m_hevThreadIsShut = ::CreateEvent(
NULL,
FALSE, // release one thread (this one) on signal
FALSE, // initially non-signalled
NULL);
if (m_hevThreadIsShut)
{
Progress = eThread;
DWORD dwThreadID; // No need to hold onto dwThreadID in member variable.
// All Win32 functions take the handle m_hThread instead.
// The one reason you'd ever want to know this ID is for
// debugging
// Note that there is no corresponding ::CloseHandle(m_hThread).
// That is because the thread goes out of existence on the implicit
// ::ExitThread() when TopicBuilderTask returns. See documentation of
// ::CreateThread for further details JM 10/22/98
m_hThread = ::CreateThread( NULL,
0,
(LPTHREAD_START_ROUTINE)TopicBuilderTask,
this,
0,
&dwThreadID);
if (m_hThread)
Progress = eOK;
}
}
if (Progress != eOK)
{
m_dwErr = GetLastError();
CString str;
str.Format(_T("%d"), m_dwErr);
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
(Progress == eHevBuildReq) ?_T("Can't create \"request build\" event")
: (Progress == eHevShut) ? _T("Can't create \"shut\" event")
: _T("Can't create thread"),
str,
EV_GTS_ERROR_TOPICBUILDERTHREAD );
SetThreadStatus(eFail);
if (m_hevBuildRequested)
::CloseHandle(m_hevBuildRequested);
if (m_hevThreadIsShut)
::CloseHandle(m_hevThreadIsShut);
}
}
CTopicShop::CTopicBuildQueue::~CTopicBuildQueue()
{
ShutDown();
if (m_hevBuildRequested)
::CloseHandle(m_hevBuildRequested);
if (m_hevThreadIsShut)
::CloseHandle(m_hevThreadIsShut);
}
void CTopicShop::CTopicBuildQueue::SetThreadStatus(ThreadStatus ts)
{
LOCKOBJECT();
m_ThreadStatus = ts;
time(&m_time);
UNLOCKOBJECT();
}
DWORD CTopicShop::CTopicBuildQueue::GetStatus(ThreadStatus &ts, DWORD & seconds) const
{
time_t timeNow;
LOCKOBJECT();
ts = m_ThreadStatus;
time(&timeNow);
seconds = timeNow - m_time;
UNLOCKOBJECT();
return m_dwErr;
}
// report status of topics in m_TopicCatalog
// OUTPUT Total: number of topics
// OUTPUT NoInit: number of uninitialized topics (never built)
// OUTPUT Fail: number of topics we tried to build, but could never build
// INPUT parrstrFail NULL == don't care to get this output
// OUTPUT *parrstrFail: names of the topics that couldn't be built
void CTopicShop::CTopicBuildQueue::GetTopicsStatus(
DWORD &Total, DWORD &NoInit, DWORD &Fail, vector<CString>*parrstrFail) const
{
LOCKOBJECT();
Total = m_TopicCatalog.size();
NoInit = 0;
Fail = 0;
if (parrstrFail)
parrstrFail->clear();
for (CTopicCatalog::const_iterator it = m_TopicCatalog.begin(); it != m_TopicCatalog.end(); ++it)
{
CTopicInCatalog::TopicStatus status = it->second->GetTopicStatus();
switch (status)
{
case CTopicInCatalog::eNotInited:
++NoInit;
break;
case CTopicInCatalog::eFail:
++Fail;
if (parrstrFail)
{
try
{
parrstrFail->push_back(it->second->GetTopicInfo().GetNetworkName());
}
catch (exception& x)
{
CString str;
// Note STL exception in event log.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
CCharConversion::ConvertACharToString(x.what(), str),
_T(""),
EV_GTS_STL_EXCEPTION );
}
}
break;
default:
break;
}
}
UNLOCKOBJECT();
}
// report status of template in m_TemplateCatalog
// INPUT parrstrFail NULL == don't care to get this output
// OUTPUT *parrstrFail: names of the topics that couldn't be built
// INPUT parrcntFail NULL == don't care to get this output
// OUTPUT *parrcntFail: count of failures of the topics that couldn't be built.
// one to one correspondence with parrstrFail.
void CTopicShop::CTopicBuildQueue::GetTemplatesStatus(
vector<CString>*parrstrFail, vector<DWORD>*parrcntFail ) const
{
LOCKOBJECT();
if (parrstrFail)
parrstrFail->clear();
if (parrcntFail)
parrcntFail->clear();
for (CTemplateCatalog::const_iterator it = m_TemplateCatalog.begin(); it != m_TemplateCatalog.end(); ++it)
{
if (it->second->GetTemplateStatus() == CTemplateInCatalog::eFail)
{
if (parrstrFail)
{
// Currently we only care about failures and their related count.
try
{
parrstrFail->push_back(it->second->GetTemplateInfo());
if (parrcntFail)
parrcntFail->push_back( it->second->CountOfFailedLoads() );
}
catch (exception& x)
{
CString str;
// Note STL exception in event log.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
CCharConversion::ConvertACharToString(x.what(), str),
_T(""),
EV_GTS_STL_EXCEPTION );
}
}
}
}
UNLOCKOBJECT();
}
// For use by this class and derived classes destructors.
void CTopicShop::CTopicBuildQueue::ShutDown()
{
LOCKOBJECT();
if (m_bShuttingDown)
{
// We have already shut down the topic builder thread, simply exit.
UNLOCKOBJECT();
return;
}
m_bShuttingDown = true;
if (m_hThread)
{
DWORD RetVal;
::SetEvent(m_hevBuildRequested);
UNLOCKOBJECT();
// Wait for a set period, if failure then log error msg and wait infinite.
RetVal= WAIT_INFINITE( m_hevThreadIsShut );
}
else
UNLOCKOBJECT();
}
// For general use (not part of TopicBuilderTask thread) code.
// Ask for a topic to be built (or rebuilt).
// INPUT strTopic - name of topic OR HTI TEMPLATE
// INPUT bPriority - If bPriority is true, move it ahead of any topics/templates
// for which this has not been called with bPriority true. At a gien priority level,
// toics always come before templates.
// INPUT eCat - indicates whether strTopic is a topic or an HTI template
// This is an asynchronous request that will eventually be fulfilled by TopicBuilderTask thread
void CTopicShop::CTopicBuildQueue::RequestBuild(const CString &strTopic, bool bPriority,
CatalogCategory eCat )
{
// Verify that this is a valid category.
if (eCat != eTopic && eCat != eTemplate)
return;
// Make a lower-case version of the topic name.
CString strTopicLC = strTopic;
strTopicLC.MakeLower();
vector<CString> & Priority = (eCat == eTopic) ?
m_PriorityBuild :
m_PriorityBuildTemplates;
vector<CString> & NonPriority = (eCat == eTopic) ?
m_NonPriorityBuild :
m_NonPriorityBuildTemplates;
LOCKOBJECT();
if ((strTopicLC != m_CurrentlyBuilding) || (eCat != m_eCurrentlyBuilding))
{
vector<CString>::iterator it = find(Priority.begin(), Priority.end(), strTopicLC);
if (it == Priority.end())
{
try
{
it = find(NonPriority.begin(), NonPriority.end(), strTopicLC);
if (bPriority)
{
if (it != NonPriority.end())
{
// it's in the non-priority list. Get it out of there.
NonPriority.erase(it);
}
// Add it to the priority list
Priority.push_back(strTopicLC);
}
else if (it == NonPriority.end())
{
// Add it to the non-priority list
NonPriority.push_back(strTopicLC);
}
// else it's already listed
}
catch (exception& x)
{
CString str;
// Note STL exception in event log.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
CCharConversion::ConvertACharToString(x.what(), str),
_T(""),
EV_GTS_STL_EXCEPTION );
}
}
// else it's already a priority, we can't do more
}
// else it's already building, we can't do more
::SetEvent(m_hevBuildRequested);
UNLOCKOBJECT();
}
// For use by the TopicBuilderTask thread. Should only be called when nothing is
// currently building. Caller is responsible to build only one at a time.
// OUTPUT strTopic - name of topic OR HTI TEMPLATE
// OUTPUT eCat - indicates whether strTopic is a topic or an HTI template
// false return indicates invalid request.
// non-empty string output strTopic indicates what is currently building
// empty string output should never happen
// true return indicates valid request:
// non-empty string output strTopic indicates what to build
// empty string output strTopic indicates nothing more to build
// Note that this function has the side effect of changing the _thread_ priority.
bool CTopicShop::CTopicBuildQueue::GetNextToBuild( CString &strTopic, CatalogCategory &eCat )
{
vector<CString>::iterator it;
LOCKOBJECT();
bool bOK = m_CurrentlyBuilding.IsEmpty();
if (bOK)
{
if (!m_PriorityBuild.empty())
{
// We have priority topics to build.
it = m_PriorityBuild.begin();
m_CurrentlyBuilding = *it;
m_eCurrentlyBuilding= eTopic;
m_PriorityBuild.erase(it);
// If there are more priority builds waiting behind this, boost priority
// above normal so we get to them ASAP. Otherwise, normal priority.
::SetThreadPriority(GetCurrentThread(),
m_PriorityBuild.empty() ? THREAD_PRIORITY_NORMAL : THREAD_PRIORITY_ABOVE_NORMAL);
}
else if (!m_PriorityBuildTemplates.empty())
{
// We have priority alternate templates to build.
it = m_PriorityBuildTemplates.begin();
m_CurrentlyBuilding = *it;
m_eCurrentlyBuilding= eTemplate;
m_PriorityBuildTemplates.erase(it);
// If there are more priority builds waiting behind this, boost priority
// above normal so we get to them ASAP. Otherwise, normal priority.
::SetThreadPriority(GetCurrentThread(),
m_PriorityBuildTemplates.empty() ? THREAD_PRIORITY_NORMAL : THREAD_PRIORITY_ABOVE_NORMAL);
}
else if (!m_NonPriorityBuild.empty())
{
// We have non-priority topics to build.
it = m_NonPriorityBuild.begin();
m_CurrentlyBuilding = *it;
m_eCurrentlyBuilding= eTopic;
m_NonPriorityBuild.erase(it);
// This is initialization, no one is in a hurry for it,
// let's not burden the system unduly.
::SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_BELOW_NORMAL);
}
else if (!m_NonPriorityBuildTemplates.empty())
{
// We have non-priority alternate templates to build.
it = m_NonPriorityBuildTemplates.begin();
m_CurrentlyBuilding = *it;
m_eCurrentlyBuilding= eTemplate;
m_NonPriorityBuildTemplates.erase(it);
// This is initialization, no one is in a hurry for it,
// let's not burden the system unduly.
::SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_BELOW_NORMAL);
}
else
::SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_NORMAL);
}
strTopic = m_CurrentlyBuilding;
eCat= m_eCurrentlyBuilding;
UNLOCKOBJECT();
return bOK;
}
// Acknowledge that we have finished building the topic previously obtained with GetNextToBuild
// This should be called before GetNextToBuild is called again.
void CTopicShop::CTopicBuildQueue::BuildComplete()
{
LOCKOBJECT();
m_CurrentlyBuilding = _T("");
m_eCurrentlyBuilding= eUnknown;
UNLOCKOBJECT();
}
// For use by the TopicBuilderTask thread.
// Must be called on TopicBuilderTask thread. Handles all work of building & publishing
// topics driven by the queue contents
void CTopicShop::CTopicBuildQueue::Build()
{
CString strTopic;
CatalogCategory eCat;
while (true)
{
LOCKOBJECT();
SetThreadStatus(eRun);
if (m_bShuttingDown)
{
UNLOCKOBJECT();
break;
}
GetNextToBuild( strTopic, eCat );
if (strTopic.IsEmpty())
{
::ResetEvent(m_hevBuildRequested);
UNLOCKOBJECT();
SetThreadStatus(eWait);
::WaitForSingleObject(m_hevBuildRequested, INFINITE);
continue;
}
else
UNLOCKOBJECT();
if (eCat == eTopic)
{
// at this point we have a topic name. Get access to topic info.
CTopicCatalog::const_iterator it = m_TopicCatalog.find(strTopic);
if (it == m_TopicCatalog.end())
{
// Asked to initialize a topic that doesn't have a catalog entry.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T("Asked to build"),
strTopic,
EV_GTS_UNRECOGNIZED_TOPIC );
}
else
{
CTopicInCatalog & TopicInCatalog = *(it->second);
const CTopicInfo topicinfo (TopicInCatalog.GetTopicInfo());
try
{
// must create this with new so we can manage it under a reference count regime
CTopic *ptopic = new CTopic (topicinfo.GetDscFilePath()
,topicinfo.GetHtiFilePath()
,topicinfo.GetBesFilePath()
,topicinfo.GetTscFilePath() );
if (ptopic->Read())
TopicInCatalog.Init(ptopic);
else
{
// Release memory.
delete ptopic;
TopicInCatalog.Init(NULL);
}
TopicInCatalog.TopicInfoIsCurrent();
}
catch (bad_alloc&)
{
// Note memory failure in event log.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T(""), _T(""), EV_GTS_CANT_ALLOC );
}
}
}
else if (eCat == eTemplate)
{
// Determine whether the passed in template is in the catalog.
CTemplateCatalog::const_iterator it = m_TemplateCatalog.find(strTopic);
if (it == m_TemplateCatalog.end())
{
// Asked to initialize a template that doesn't have a catalog entry.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T("Asked to build"),
strTopic,
EV_GTS_UNRECOGNIZED_TEMPLATE );
}
else
{
CTemplateInCatalog & TemplateInCatalog = *(it->second);
const CString & strTemplateName = TemplateInCatalog.GetTemplateInfo();
try
{
// must create this with new so we can manage it under a reference count regime
CAPGTSHTIReader *pTemplate;
pTemplate= new CAPGTSHTIReader( CPhysicalFileReader::makeReader( strTemplateName ) );
if (pTemplate->Read())
TemplateInCatalog.Init( pTemplate );
else
{
// Release memory.
delete pTemplate;
TemplateInCatalog.Init( NULL );
}
}
catch (bad_alloc&)
{
// Note memory failure in event log.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T(""), _T(""), EV_GTS_CANT_ALLOC );
}
}
}
BuildComplete();
}
SetThreadStatus(eExiting);
}
// For use by the TopicBuilderTask thread.
void CTopicShop::CTopicBuildQueue::AckShutDown()
{
LOCKOBJECT();
::SetEvent(m_hevThreadIsShut);
UNLOCKOBJECT();
}
// Main routine of a thread responsible for building and publishing CTopic objects.
// INPUT lpParams
// Always returns 0.
/* static */ UINT WINAPI CTopicShop::CTopicBuildQueue::TopicBuilderTask(LPVOID lpParams)
{
reinterpret_cast<CTopicBuildQueue*>(lpParams)->Build();
reinterpret_cast<CTopicBuildQueue*>(lpParams)->AckShutDown();
return 0;
}
//////////////////////////////////////////////////////////////////////
// CTopicShop::ThreadStatus
//////////////////////////////////////////////////////////////////////
/* static */ CString CTopicShop::ThreadStatusText(ThreadStatus ts)
{
switch(ts)
{
case eBeforeInit: return _T("Before Init");
case eFail: return _T("Fail");
case eWait: return _T("Wait");
case eRun: return _T("Run");
case eExiting: return _T("Exiting");
default: return _T("");
}
}
//////////////////////////////////////////////////////////////////////
// CTopicShop
// The only functions which need to lock this class are those which modify TopicCatalog.
// TopicBuildQueue has its own protection.
//////////////////////////////////////////////////////////////////////
CTopicShop::CTopicShop() :
m_TopicBuildQueue( m_TopicCatalog, m_TemplateCatalog ),
m_hevShopIsOpen(NULL)
{
m_hevShopIsOpen = ::CreateEvent(
NULL,
TRUE, // any number of (working) threads may be released on signal
FALSE, // initially non-signalled
NULL);
if (! m_hevShopIsOpen)
{
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T(""),
_T(""),
EV_GTS_ERROR_EVENT );
// Simulate a bad alloc exception in this case.
// This constructor is only called within the ctor of CDBLoadConfiguration
// and the allocation of that object is wrapped within a try...catch() block.
throw bad_alloc();
}
}
CTopicShop::~CTopicShop()
{
// Terminate the topic builder thread prior to cleaning up the topics.
m_TopicBuildQueue.ShutDown();
if (m_hevShopIsOpen)
::CloseHandle(m_hevShopIsOpen);
// Clean up the topics.
for (CTopicCatalog::const_iterator it = m_TopicCatalog.begin(); it != m_TopicCatalog.end(); ++it)
{
delete it->second;
}
// Clean up the templates.
for (CTemplateCatalog::const_iterator itu = m_TemplateCatalog.begin(); itu != m_TemplateCatalog.end(); ++itu)
{
delete itu->second;
}
}
// Add a topic to the catalog. It must eventually be built by TopicBuilderTask thread.
// If topic is already in list identically, no effect.
void CTopicShop::AddTopic(const CTopicInfo & topicinfo)
{
// our keys into the catalog should be all lower case. This code is fine, because
// CTopicInfo::GetNetworkName() is guaranteed to return lower case.
CString strNetworkName = topicinfo.GetNetworkName();
LOCKOBJECT();
CTopicCatalog::const_iterator it = m_TopicCatalog.find(strNetworkName);
if (it == m_TopicCatalog.end())
{
try
{
m_TopicCatalog[strNetworkName] = new CTopicInCatalog(topicinfo);
}
catch (bad_alloc&)
{
// Note memory failure in event log.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T(""), _T(""), EV_GTS_CANT_ALLOC );
}
}
else if (! (topicinfo == it->second->GetTopicInfo()))
{
it->second->SetTopicInfo(topicinfo);
m_TopicBuildQueue.RequestBuild(strNetworkName, false, CTopicBuildQueue::eTopic);
}
UNLOCKOBJECT();
}
// Add a template to the catalog. It must eventually be built by TopicBuilderTask thread.
// If template is already in list, no effect.
void CTopicShop::AddTemplate( const CString & strTemplateName )
{
LOCKOBJECT();
if (m_TemplateCatalog.find( strTemplateName ) == m_TemplateCatalog.end())
{
try
{
m_TemplateCatalog[ strTemplateName ] = new CTemplateInCatalog( strTemplateName );
}
catch (bad_alloc&)
{
// Note memory failure in event log.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
_T(""), _T(""), EV_GTS_CANT_ALLOC );
}
}
UNLOCKOBJECT();
}
// if shop is not already open, open it.
void CTopicShop::OpenShop()
{
::SetEvent(m_hevShopIsOpen);
}
// Request that a topic be built (or rebuilt)
// Typically called in response to either the system detecting a change to the topic
// files or from an operator saying "act as if a change has been detected".
// INPUT strTopic names the topic to build.
// if pbAlreadyInCatalog is input non-null, then *pbAlreadyInCatalog returns whether
// the topic was already known to the system.
void CTopicShop::BuildTopic(const CString & strTopic, bool *pbAlreadyInCatalog /*= NULL*/)
{
if (pbAlreadyInCatalog)
*pbAlreadyInCatalog = false; // initialize
CTopicInCatalog * pTopic = GetCatalogEntryPtr(strTopic);
if (pTopic)
{
pTopic->CountChange();
if (pbAlreadyInCatalog)
*pbAlreadyInCatalog = true;
}
m_TopicBuildQueue.RequestBuild( strTopic, false, CTopicBuildQueue::eTopic );
}
// Request that a template be built (or rebuilt)
// Typically called in response to the system detecting a change to the template files.
void CTopicShop::BuildTemplate( const CString & strTemplate )
{
CTemplateInCatalog * pTemplate = GetTemplateCatalogEntryPtr( strTemplate );
if (pTemplate)
pTemplate->CountChange();
m_TopicBuildQueue.RequestBuild( strTemplate, false, CTopicBuildQueue::eTemplate );
}
CTopicInCatalog * CTopicShop::GetCatalogEntryPtr(const CString & strTopic) const
{
// Wait for a set period, if failure then log error msg and wait infinite.
WAIT_INFINITE( m_hevShopIsOpen );
CTopicCatalog::const_iterator it= m_TopicCatalog.find(strTopic);
if (it == m_TopicCatalog.end())
return NULL;
else
return it->second;
}
CTemplateInCatalog * CTopicShop::GetTemplateCatalogEntryPtr(const CString & strTemplate ) const
{
// Wait for a set period, if failure then log error msg and wait infinite.
WAIT_INFINITE( m_hevShopIsOpen );
CTemplateCatalog::const_iterator it= m_TemplateCatalog.find( strTemplate );
if (it == m_TemplateCatalog.end())
return NULL;
else
return it->second;
}
// Call this function to obtain a CP_TOPIC as a pointer to the topic (identified by
// strTopic) that you want to operate on. As long as the CP_TOPIC remains undeleted,
// the associated CTopic is guaranteed to remain undeleted.
// this function must not lock CTopicShop, because it can wait a long time.
CP_TOPIC & CTopicShop::GetTopic(const CString & strTopic, CP_TOPIC &cpTopic, bool bNewCookie)
{
CTopicInCatalog *pTopicInCatalog = GetCatalogEntryPtr(strTopic);
if (! pTopicInCatalog)
cpTopic = NULL;
else
{
pTopicInCatalog->CountHit(bNewCookie);
pTopicInCatalog->GetTopicNoWait(cpTopic);
if (cpTopic.IsNull())
{
m_TopicBuildQueue.RequestBuild( strTopic, true, CTopicBuildQueue::eTopic );
pTopicInCatalog->GetTopic(cpTopic);
}
}
return cpTopic;
}
// Call this function to obtain a CP_TEMPLATE as a pointer to the template (identified by
// strTemplate) that you want to operate on. As long as the CP_TEMPLATE remains undeleted,
// the associated CAPGTSHTIReader is guaranteed to remain undeleted.
// this function must not lock CTopicShop, because it can wait a long time.
CP_TEMPLATE & CTopicShop::GetTemplate(const CString & strTemplate, CP_TEMPLATE &cpTemplate, bool bNewCookie)
{
CTemplateInCatalog *pTemplateInCatalog = GetTemplateCatalogEntryPtr(strTemplate);
if (! pTemplateInCatalog)
cpTemplate = NULL;
else
{
pTemplateInCatalog->CountHit(bNewCookie);
pTemplateInCatalog->GetTemplateNoWait( cpTemplate );
if (cpTemplate.IsNull())
{
m_TopicBuildQueue.RequestBuild( strTemplate, true, CTopicBuildQueue::eTemplate );
pTemplateInCatalog->GetTemplate( cpTemplate );
}
}
return cpTemplate;
}
void CTopicShop::GetListOfTopicNames(vector<CString>&arrstrTopic) const
{
arrstrTopic.clear();
LOCKOBJECT();
try
{
for (CTopicCatalog::const_iterator it = m_TopicCatalog.begin(); it != m_TopicCatalog.end(); ++it)
{
arrstrTopic.push_back(it->second->GetTopicInfo().GetNetworkName());
}
}
catch (exception& x)
{
CString str;
// Note STL exception in event log.
CBuildSrcFileLinenoStr SrcLoc( __FILE__, __LINE__ );
CEvent::ReportWFEvent( SrcLoc.GetSrcFileLineStr(),
SrcLoc.GetSrcFileLineStr(),
CCharConversion::ConvertACharToString(x.what(), str),
_T(""),
EV_GTS_STL_EXCEPTION );
}
UNLOCKOBJECT();
}
// Rebuild all topics from source files
void CTopicShop::RebuildAll()
{
LOCKOBJECT();
for (CTopicCatalog::const_iterator it = m_TopicCatalog.begin(); it != m_TopicCatalog.end(); ++it)
{
BuildTopic(it->second->GetTopicInfo().GetNetworkName());
}
for (CTemplateCatalog::const_iterator itu = m_TemplateCatalog.begin(); itu != m_TemplateCatalog.end(); ++itu)
{
BuildTemplate( itu->first );
}
UNLOCKOBJECT();
}
// Get status information on the topic builder thread
DWORD CTopicShop::GetThreadStatus(ThreadStatus &ts, DWORD & seconds) const
{
return m_TopicBuildQueue.GetStatus(ts, seconds);
}
// see CTopicShop::CTopicBuildQueue::GetTopicsStatus for documentation.
void CTopicShop::GetTopicsStatus(
DWORD &Total, DWORD &NoInit, DWORD &Fail, vector<CString>*parrstrFail) const
{
m_TopicBuildQueue.GetTopicsStatus(Total, NoInit, Fail, parrstrFail);
}
// see CTopicShop::CTopicBuildQueue::GetTemplatesStatus for documentation.
void CTopicShop::GetTemplatesStatus( vector<CString>*parrstrFail, vector<DWORD>*parrcntFail ) const
{
m_TopicBuildQueue.GetTemplatesStatus( parrstrFail, parrcntFail);
}
CTopicInCatalog* CTopicShop::GetCatalogEntry(const CString& strTopic) const
{
CTopicInCatalog* ret = NULL;
LOCKOBJECT();
CTopicCatalog::const_iterator it = m_TopicCatalog.find(strTopic);
if (it != m_TopicCatalog.end())
ret = it->second;
UNLOCKOBJECT();
return ret;
}
bool CTopicShop::RetTemplateInCatalogStatus( const CString& strTemplate, bool& bValid ) const
{
bool bIsPresent= false;
bValid= false;
LOCKOBJECT();
CTemplateCatalog::const_iterator it = m_TemplateCatalog.find( strTemplate );
if (it != m_TemplateCatalog.end())
{
CTemplateInCatalog* pTmp;
bIsPresent= true;
pTmp= it->second;
switch (pTmp->GetTemplateStatus())
{
case CTemplateInCatalog::eOK:
bValid= true;
break;
case CTemplateInCatalog::eFail:
// Template has failed to load so we will not try to reload it,
// but we need to increment the attempted load counter.
pTmp->CountFailed();
break;
default: ;
}
}
UNLOCKOBJECT();
return( bIsPresent );
}