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1664 lines
48 KiB
1664 lines
48 KiB
/*-----------------------------------------------------------------------------
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Microsoft Denali
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Microsoft Confidential
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Copyright 1996 Microsoft Corporation. All Rights Reserved.
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Component: Template Cache Manager
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File: CacheMgr.cpp
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Owner: DGottner
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Template cache manager implementation
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-----------------------------------------------------------------------------*/
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#include "denpre.h"
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#pragma hdrstop
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#include "perfdata.h"
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#include "memchk.h"
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CTemplateCacheManager g_TemplateCache;
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CIncFileMap g_IncFileMap;
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LONG g_nFlushThreads = 0;
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BOOL CTemplateCacheManager::m_fFailedToInitPersistCache = FALSE;
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char CTemplateCacheManager::m_szPersistCacheDir[MAX_PATH];
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/*===================================================================
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ZapTemplate
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Decrement the ref. count of a template to remove it from cache.
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If the template is global.asa, that's all we do because application
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manager has the last reference. Otherwise, we Release the template
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by calling CTemplate::End() to also free references to it from the
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debugger.
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Parameters: pTemplate - template pointer to Release() from cache
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Returns: new ref. count
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===================================================================*/
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static inline
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ULONG ZapTemplate(CTemplate *pTemplate)
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{
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if (! pTemplate->FGlobalAsa())
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return pTemplate->End();
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else
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return pTemplate->Release();
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}
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/* ****************************************************************************
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CCacheManager member functions
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*/
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/*===================================================================
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CTemplateCacheManager::CTemplateCacheManager
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Parameters: N/A
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Returns: N/A
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===================================================================*/
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CTemplateCacheManager::CTemplateCacheManager()
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{
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m_pHashTemplates = NULL;
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m_szPersistCacheDir[0] = '\0';
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m_fFailedToInitPersistCache = FALSE;
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}
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/*===================================================================
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CTemplateCacheManager::~CTemplateCacheManager
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Parameters: N/A
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Returns: N/A
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===================================================================*/
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CTemplateCacheManager::~CTemplateCacheManager()
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{
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}
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/*===================================================================
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CTemplateCacheManager::Init
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Init the template cache manager - phase 1 - that which can be done
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with just default values in Glob.
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Parameters: None
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Returns: Completion Status
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===================================================================*/
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HRESULT CTemplateCacheManager::Init()
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{
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HRESULT hrInit;
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ErrInitCriticalSection(&m_csUpdate, hrInit);
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if (FAILED(hrInit))
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return(hrInit);
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// allocate the initial CTemplateHashTable
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m_pHashTemplates = new CTemplateHashTable;
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return S_OK;
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}
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/* ****************************************************************************
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CTemplateCacheManager member functions
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*/
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/*===================================================================
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CTemplateCacheManager::UnInit
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Parameters: N/A
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Returns: Completion status
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===================================================================*/
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HRESULT CTemplateCacheManager::UnInit()
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{
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if (m_pHashTemplates) {
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while (! m_pHashTemplates->FMemoryTemplatesIsEmpty()) {
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CTemplate *pTemplate = static_cast<CTemplate *>(m_pHashTemplates->MemoryTemplatesBegin());
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m_pHashTemplates->RemoveTemplate(pTemplate);
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ZapTemplate(pTemplate);
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}
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while (! m_pHashTemplates->FPersistTemplatesIsEmpty()) {
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CTemplate *pTemplate = static_cast<CTemplate *>(m_pHashTemplates->PersistTemplatesBegin());
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m_pHashTemplates->RemoveTemplate(pTemplate);
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ZapTemplate(pTemplate);
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}
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}
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delete m_pHashTemplates;
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m_pHashTemplates = NULL;
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#ifndef PERF_DISABLE
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g_PerfData.Zero_MEMORYTEMPLCACHE();
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g_PerfData.Zero_TEMPLCACHE();
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#endif
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DeleteCriticalSection(&m_csUpdate);
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// give any flush threads a chance to finish. This is necessary
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// to prevent an AV by LKRHash.
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DWORD maxSecondsToWait = 60;
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while (maxSecondsToWait-- && g_nFlushThreads) {
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Sleep(1000);
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}
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return S_OK;
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}
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/*===================================================================
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CTemplateCacheManager::FindCached
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Get a template from the cache only
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Parameters:
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szFile - file to find in the cache
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ppTemplate - [out] template object found
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Returns:
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HRESULT (S_OK if found, S_FALSE if noe found)
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===================================================================*/
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HRESULT CTemplateCacheManager::FindCached(const TCHAR *szFile, DWORD dwInstanceID, CTemplate **ppTemplate)
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{
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Assert(IsNormalized(szFile));
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if (!ppTemplate)
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return E_POINTER;
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LockTemplateCache();
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m_pHashTemplates->FindTemplate(CTemplateKey(szFile, dwInstanceID), ppTemplate);
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if (*ppTemplate)
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{
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if (!(*ppTemplate)->m_fReadyForUse)
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*ppTemplate = NULL; // not ready - as if nor found
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else
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(*ppTemplate)->AddRef(); // addref inside critical section
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}
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UnLockTemplateCache();
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return *ppTemplate? S_OK : S_FALSE;
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}
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/*===================================================================
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CTemplateCacheManager::Load
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Get a template from the cache, or load it into cache
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Parameters:
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szFile - file to load into the cache
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Returns: N/A
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===================================================================*/
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HRESULT CTemplateCacheManager::Load(BOOL fRunGlobalAsp, const TCHAR *szFile, DWORD dwInstanceID, CHitObj *pHitObj, CTemplate **ppTemplate, BOOL *pfTemplateInCache)
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{
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HRESULT hr = S_OK; // return value
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HRESULT (CTemplate::*pmAction)(CHitObj *); // do we need to compile a new template or deliver an existing one?
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Assert(IsNormalized(szFile));
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BOOL fLocked = FALSE;
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// If this is the GLOBAL.ASA we can pick up
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// template directly from the application
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if (fRunGlobalAsp && pHitObj->PAppln()->PGlobalTemplate())
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{
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*ppTemplate = pHitObj->PAppln()->PGlobalTemplate();
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}
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// see if we already have looked up the template on the I/O thread...
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else if (!fRunGlobalAsp && pHitObj->GetTemplate())
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{
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*ppTemplate = pHitObj->GetTemplate();
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pHitObj->SetTemplate(NULL);
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}
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else
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// Otherwise we have to look for it in the cache
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{
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LockTemplateCache();
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fLocked = TRUE;
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m_pHashTemplates->FindTemplate(CTemplateKey(szFile, dwInstanceID), ppTemplate);
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}
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if (*ppTemplate != NULL)
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{
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// Template found in cache -> use it
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(*ppTemplate)->AddRef();
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*pfTemplateInCache = TRUE;
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if (fLocked) // Global.Asa from App - no lock
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UnLockTemplateCache();
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pmAction = CTemplate::Deliver;
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}
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else
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{
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*pfTemplateInCache = FALSE;
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Assert(fLocked); // only could get here if not found in the hash table
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UnLockTemplateCache();
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// Create and init new template outside of crirical section
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CTemplate *pNewTemplate = new CTemplate;
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if (!pNewTemplate)
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hr = E_OUTOFMEMORY;
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if (SUCCEEDED(hr))
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hr = pNewTemplate->Init(pHitObj, !!fRunGlobalAsp, CTemplateKey(szFile, dwInstanceID));
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if (SUCCEEDED(hr))
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{
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LockTemplateCache();
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// Try to find if inserted by another thread
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m_pHashTemplates->FindTemplate(CTemplateKey(szFile, dwInstanceID), ppTemplate);
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if (*ppTemplate != NULL)
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{
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// Template found in cache -> use it
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(*ppTemplate)->AddRef();
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UnLockTemplateCache();
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pmAction = CTemplate::Deliver;
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}
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else
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{
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// since we are creating a new template, call FlushCache to make
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// sure that no script engines are cached with this name
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g_ScriptManager.FlushCache(szFile);
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// Insert the newly created template
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*ppTemplate = pNewTemplate;
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pNewTemplate = NULL; // not to be deleted later
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m_pHashTemplates->InsertTemplate(*ppTemplate);
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(*ppTemplate)->AddRef();
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if (Glob(dwScriptFileCacheSize) == 0) {
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// This is special case when a valid template
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// does not get added to the cache
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// Don't attach such templates to debugger
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(*ppTemplate)->m_fDontAttach = TRUE;
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}
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UnLockTemplateCache();
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pmAction = CTemplate::Compile;
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}
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}
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// cleanup new template if created but unused
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if (pNewTemplate)
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pNewTemplate->Release();
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}
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if (FAILED(hr))
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return hr;
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// init succeeded: compile or deliver the template, as required
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hr = ((*ppTemplate)->*pmAction)(pHitObj);
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if (pmAction == CTemplate::Compile && (*ppTemplate)->m_fDontCache)
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{
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/* We were compiling and the compiler alerted us not to cache the failed template.
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Typically, this occurs when compile failure was caused by something other than
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bad template syntax (permissions failure, bad include file reference, etc.).
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We need to roll back to where the template did not exist.
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*/
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// de-cache and release the template
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// NOTE we don't nullify template ptr, because we want ExecuteRequest to do the final release
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LockTemplateCache();
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if (m_pHashTemplates->RemoveTemplate(*ppTemplate) == LK_SUCCESS)
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ZapTemplate(*ppTemplate);
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UnLockTemplateCache();
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(*ppTemplate)->Release();
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*ppTemplate = NULL;
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}
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LockTemplateCache();
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// Remove old scripts from cache
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while (!m_pHashTemplates->FMemoryTemplatesIsEmpty()
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&& (m_pHashTemplates->InMemoryTemplates() > Glob(dwScriptFileCacheSize))) {
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Assert (!m_pHashTemplates->FMemoryTemplatesIsEmpty());
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CTemplate *pOldTemplate = static_cast<CTemplate *>(m_pHashTemplates->MemoryTemplatesEnd());
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m_pHashTemplates->RemoveTemplate(pOldTemplate, TRUE);
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// flush the corresponding script engines. But only if the template
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// is valid.
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if (pOldTemplate->FIsValid()) {
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g_ScriptManager.FlushCache(pOldTemplate->GetSourceFileName());
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}
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// Only Zap the template if it is not persisted. The result of the above
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// call to RemoveTemplate is that the template may have been moved from the
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// memory cache to the persist cache. In which case, the template is still
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// effectively cached.
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if (pOldTemplate->FIsPersisted() == FALSE) {
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ZapTemplate(pOldTemplate);
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}
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}
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UnLockTemplateCache();
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// Store a pointer to the template with the application
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// if we haven't already done so
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if (SUCCEEDED(hr) && fRunGlobalAsp && pHitObj->PAppln()->PGlobalTemplate() == NULL)
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pHitObj->PAppln()->SetGlobalTemplate(*ppTemplate);
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// If we are shutting down, don't request change notification
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if (!IsShutDownInProgress())
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{
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// If running on NT, and we just compiled the template
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// register all the directories used by this template
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// for change notification
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if (FIsWinNT() && pmAction == CTemplate::Compile && SUCCEEDED(hr)) {
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if (!RegisterTemplateForChangeNotification(*ppTemplate, pHitObj->PAppln())) {
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LockTemplateCache();
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if (m_pHashTemplates->RemoveTemplate(*ppTemplate) == LK_SUCCESS)
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ZapTemplate(*ppTemplate);
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UnLockTemplateCache();
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}
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// also create the services config object
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hr = (*ppTemplate)->CreateTransServiceConfig(pHitObj->PAppln()->QueryAppConfig()->fTrackerEnabled());
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}
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// If running on NT, this is a new application, and the template is a global.asa
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// register this application for file change notifications
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if (FIsWinNT() && SUCCEEDED(hr) && (*ppTemplate)->m_fGlobalAsa && pHitObj->FStartApplication())
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{
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RegisterApplicationForChangeNotification(*ppTemplate, pHitObj->PAppln());
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}
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}
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return hr;
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}
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/*===================================================================
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CTemplateCacheManager::Flush
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Parameters:
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szFile - the file to remove from cache
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Returns:
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None
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===================================================================*/
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void CTemplateCacheManager::Flush(const TCHAR *szFile, DWORD dwInstanceID)
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{
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LockTemplateAndIncFileCaches();
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Assert (IsNormalized(szFile));
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CTemplate *pTemplate;
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m_pHashTemplates->FindTemplate(CTemplateKey(szFile, dwInstanceID), &pTemplate);
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while (pTemplate != NULL)
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{
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#ifndef PERF_DISABLE
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g_PerfData.Incr_TEMPLFLUSHES();
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#endif
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m_pHashTemplates->RemoveTemplate(pTemplate);
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// Make sure anyone using this template can tell it is obsolete
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pTemplate->Zombify();
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// Don't flush engines if this is a global.asa file
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// We'll need the engines to run Application_OnEnd
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// The application will flush the engine from the cache
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// when it unints
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if (!FIsGlobalAsa(szFile))
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{
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g_ScriptManager.FlushCache(szFile);
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}
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ZapTemplate(pTemplate);
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// If wildcard was specified in Flush for Instance ID, there may be
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// more templates to remove.
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m_pHashTemplates->FindTemplate(CTemplateKey(szFile, dwInstanceID), &pTemplate);
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}
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UnLockTemplateAndIncFileCaches();
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}
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/*===================================================================
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CTemplateCacheManager::FlushAll
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Completely empties the template cache
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Parameters:
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None
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Returns:
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None
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===================================================================*/
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void CTemplateCacheManager::FlushAll(VOID)
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{
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LockTemplateAndIncFileCaches();
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CTemplateHashTable *pNewTable = NULL;
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HANDLE hnd;
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// note that all of the following logic works on the premise that any
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// error causes the code to fall into the old mechanism of flushing
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// the hash table in place...
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// allocate a new table
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if (!(pNewTable = new CTemplateHashTable));
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// Create a thread to clean up the old table
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else if (!(hnd = CreateThread(NULL, 0, CTemplateCacheManager::FlushHashTableThread, m_pHashTemplates, 0, NULL)));
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else {
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// all the above was successful, so note that the new table is the
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// current table in the cache, cleanup and exit.
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DBGPRINTF((DBG_CONTEXT, "[CTemplateCacheManager] Flushing entire cache on another thread.\n"));
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InterlockedIncrement(&g_nFlushThreads);
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m_pHashTemplates = pNewTable;
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CloseHandle(hnd);
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UnLockTemplateAndIncFileCaches();
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return;
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}
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// delete the new table if something above failed.
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if (pNewTable)
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delete pNewTable;
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DBGPRINTF((DBG_CONTEXT, "[CTemplateCacheManager] Flushing entire cache in place\n"));
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FlushHashTable(m_pHashTemplates);
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UnLockTemplateAndIncFileCaches();
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return;
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}
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|
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/*===================================================================
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CTemplateCacheManager::FlushHashTableThread
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Thread spun up by CTemplateCacheMgr::FlushAll() to flush all
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templates in the cache but not while under the critical section
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on the notification thread. Prevents unwanted contention on the
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cache.
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Parameters:
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None
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Returns:
|
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None
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===================================================================*/
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DWORD CTemplateCacheManager::FlushHashTableThread(VOID *pArg)
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{
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CTemplateHashTable *pTable = (CTemplateHashTable *)pArg;
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Assert(pTable);
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FlushHashTable(pTable);
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delete pTable;
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InterlockedDecrement(&g_nFlushThreads);
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return S_OK;
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}
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|
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/*===================================================================
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CTemplateCacheManager::FlushHashTable
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Does the actual work of flushing the templates.
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This routine may or may not be under the global cache manager
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crit sec. It will if the flush is happening on the notification
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thread. It won't be if it's happening on the FlushHashTableThread.
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Parameters:
|
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None
|
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Returns:
|
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None
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===================================================================*/
|
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|
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void CTemplateCacheManager::FlushHashTable(CTemplateHashTable *pTable)
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{
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// Delete templates from the cache until there are no more
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while (!pTable->FMemoryTemplatesIsEmpty()) {
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CTemplate *pTemplate = static_cast<CTemplate *>(pTable->MemoryTemplatesEnd());
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// Remove the template from its various data structures
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pTable->RemoveTemplate(pTemplate);
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// Make sure anyone using this template can tell it is obsolete
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pTemplate->Zombify();
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// Flush the engine for this template from the script engine cache
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// (use hash key, in case template was previously a zombie.)
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g_ScriptManager.FlushCache(pTemplate->ExtractHashKey()->szPathTranslated);
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ZapTemplate(pTemplate);
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}
|
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|
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// Delete templates from the cache until there are no more
|
|
|
|
while (!pTable->FPersistTemplatesIsEmpty()) {
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CTemplate *pTemplate = static_cast<CTemplate *>(pTable->PersistTemplatesEnd());
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|
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// Remove the template from its various data structures
|
|
pTable->RemoveTemplate(pTemplate);
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|
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// Make sure anyone using this template can tell it is obsolete
|
|
pTemplate->Zombify();
|
|
|
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// Flush the engine for this template from the script engine cache
|
|
// (use hash key, in case template was previously a zombie.)
|
|
g_ScriptManager.FlushCache(pTemplate->ExtractHashKey()->szPathTranslated);
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|
|
ZapTemplate(pTemplate);
|
|
|
|
}
|
|
}
|
|
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::FlushFiles
|
|
|
|
Empties template cache of files that match a prefix
|
|
|
|
Parameters:
|
|
None
|
|
|
|
Returns:
|
|
None
|
|
===================================================================*/
|
|
|
|
void CTemplateCacheManager::FlushFiles(const TCHAR *szFilePrefix)
|
|
{
|
|
LockTemplateAndIncFileCaches();
|
|
BOOL fDoingMemoryTemplates = TRUE;
|
|
|
|
// Delete templates from the cache until there are no more
|
|
|
|
CDblLink *pLink = m_pHashTemplates->MemoryTemplatesBegin();
|
|
while (! (fDoingMemoryTemplates
|
|
? m_pHashTemplates->FMemoryTemplatesDblLinkAtEnd(pLink)
|
|
: m_pHashTemplates->FPersistTemplatesDblLinkAtEnd(pLink))) {
|
|
|
|
CDblLink *pNextLink = pLink->PNext();
|
|
CTemplate *pTemplate = static_cast<CTemplate *>(pLink);
|
|
|
|
if (_tcsncmp(pTemplate->ExtractHashKey()->szPathTranslated, szFilePrefix, _tcslen(szFilePrefix)) == 0) {
|
|
#if UNICODE
|
|
DBGPRINTF((DBG_CONTEXT, "FlushFiles: flushing %S\n", pTemplate->ExtractHashKey()->szPathTranslated));
|
|
#else
|
|
DBGPRINTF((DBG_CONTEXT, "FlushFiles: flushing %s\n", pTemplate->ExtractHashKey()->szPathTranslated));
|
|
#endif
|
|
// Remove the template from its various data structures
|
|
m_pHashTemplates->RemoveTemplate(pTemplate);
|
|
|
|
// Make sure anyone using this template can tell it is obsolete
|
|
pTemplate->Zombify();
|
|
|
|
// Flush the engine for this template from the script engine cache
|
|
// (use hash key, in case template was previously a zombie.)
|
|
g_ScriptManager.FlushCache(pTemplate->ExtractHashKey()->szPathTranslated);
|
|
|
|
ZapTemplate(pTemplate);
|
|
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Incr_TEMPLFLUSHES();
|
|
#endif
|
|
}
|
|
|
|
pLink = pNextLink;
|
|
|
|
if (fDoingMemoryTemplates && m_pHashTemplates->FMemoryTemplatesDblLinkAtEnd(pLink)) {
|
|
fDoingMemoryTemplates = FALSE;
|
|
pLink = m_pHashTemplates->PersistTemplatesBegin();
|
|
}
|
|
}
|
|
|
|
UnLockTemplateAndIncFileCaches();
|
|
}
|
|
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::AddApplicationToDebuggerUI
|
|
|
|
Loop through the template cache, and create doc nodes for
|
|
all templates that belong to the application
|
|
|
|
Parameters:
|
|
pAppln - pointer to application to attach to.
|
|
|
|
Returns: N/A
|
|
===================================================================*/
|
|
|
|
void CTemplateCacheManager::AddApplicationToDebuggerUI(CAppln *pAppln)
|
|
{
|
|
CDblLink *pLink;
|
|
for (pLink = m_pHashTemplates->MemoryTemplatesBegin(); !m_pHashTemplates->FMemoryTemplatesDblLinkAtEnd(pLink); pLink = pLink->PNext())
|
|
{
|
|
// Bug 92070:
|
|
// Determine if the template is a member of pAppln by comparing
|
|
// the virtual path of the template to the application's virtual
|
|
// path (previously compared physical paths) Since a template
|
|
// can have multiple virtual paths, only the first instance wins.
|
|
// Thus the template will only appear in the application that first
|
|
// loaded it.
|
|
|
|
CTemplate *pTemplate = static_cast<CTemplate *>(pLink);
|
|
if (_tcscmp(pAppln->GetApplnPath(SOURCEPATHTYPE_VIRTUAL), pTemplate->GetApplnPath(SOURCEPATHTYPE_VIRTUAL)) == 0)
|
|
pTemplate->AttachTo(pAppln);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::RemoveApplicationFromDebuggerUI
|
|
|
|
Loop through the template cache, and remove doc nodes for
|
|
all templates that belong to the application
|
|
|
|
Parameters:
|
|
pAppln - pointer to application to detach from
|
|
if pAppln is NULL, detach from ALL applications
|
|
|
|
|
|
Returns: N/A
|
|
===================================================================*/
|
|
|
|
void CTemplateCacheManager::RemoveApplicationFromDebuggerUI(CAppln *pAppln)
|
|
{
|
|
CDblLink *pLink;
|
|
for (pLink = m_pHashTemplates->MemoryTemplatesBegin();
|
|
!m_pHashTemplates->FMemoryTemplatesDblLinkAtEnd(pLink);
|
|
pLink = pLink->PNext())
|
|
{
|
|
CTemplate *pTemplate = static_cast<CTemplate *>(pLink);
|
|
if (pAppln != NULL)
|
|
pTemplate->DetachFrom(pAppln);
|
|
else
|
|
pTemplate->Detach();
|
|
}
|
|
}
|
|
|
|
/*===================================================================
|
|
void CTemplateCacheManager::RegisterTemplateForChangeNotification
|
|
|
|
Request to watch template directories for file changes
|
|
|
|
Parameters:
|
|
A pointer to the template
|
|
|
|
Returns:
|
|
BOOL True if successfully registered for change notification
|
|
===================================================================*/
|
|
BOOL CTemplateCacheManager::RegisterTemplateForChangeNotification(CTemplate *pTemplate, CAppln *pApplication)
|
|
{
|
|
|
|
STACK_BUFFER( tempPath, MAX_PATH );
|
|
|
|
// Doesnt happen on Win95
|
|
if (!FIsWinNT()) {
|
|
return FALSE;
|
|
}
|
|
|
|
for (DWORD i = 0; i < pTemplate->m_cFilemaps; i++) {
|
|
// Check if this directory is already registered for change notification
|
|
|
|
// Pick out the directory portion of the path
|
|
TCHAR *szEndOfPath = _tcsrchr(pTemplate->m_rgpFilemaps[i]->m_szPathTranslated, _T('\\'));
|
|
size_t cch = DIFF(szEndOfPath - pTemplate->m_rgpFilemaps[i]->m_szPathTranslated)+1;
|
|
|
|
if (tempPath.Resize((cch * sizeof(TCHAR)) + sizeof(TCHAR)) == FALSE) {
|
|
|
|
// if failure to resize, continue registering...
|
|
continue;
|
|
}
|
|
TCHAR *szPath = (TCHAR *) tempPath.QueryPtr();
|
|
_tcsncpy(szPath, pTemplate->m_rgpFilemaps[i]->m_szPathTranslated, cch);
|
|
szPath[cch] = 0;
|
|
|
|
// if the template is within the application's physical path, then it is
|
|
// already being monitored.
|
|
|
|
CASPDirMonitorEntry *pDME = NULL;
|
|
|
|
if (pDME = pApplication->FPathMonitored(szPath)) {
|
|
pDME->AddRef();
|
|
pTemplate->m_rgpFilemaps[i]->m_pDME= pDME;
|
|
continue;
|
|
}
|
|
|
|
if (RegisterASPDirMonitorEntry(szPath, &pDME)) {
|
|
Assert(pDME);
|
|
pTemplate->m_rgpFilemaps[i]->m_pDME= pDME;
|
|
}
|
|
else {
|
|
// the current file failed to register. Release all previous DMEs
|
|
// and return FALSE...
|
|
|
|
if (i > 0) {
|
|
while (--i) {
|
|
|
|
pTemplate->m_rgpFilemaps[i]->m_pDME->Release();
|
|
pTemplate->m_rgpFilemaps[i]->m_pDME = NULL;
|
|
}
|
|
}
|
|
return FALSE;
|
|
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/*===================================================================
|
|
void CTemplateCacheManager::RegisterApplicationForChangeNotification
|
|
|
|
Request to watch template directories for file changes
|
|
|
|
Parameters:
|
|
A pointer to the template
|
|
|
|
Returns:
|
|
BOOL True if successfully registered for change notification
|
|
===================================================================*/
|
|
BOOL CTemplateCacheManager::RegisterApplicationForChangeNotification(CTemplate *pTemplate, CAppln *pApplication)
|
|
{
|
|
|
|
STACK_BUFFER( tempPath, MAX_PATH );
|
|
|
|
// Doesnt happen on Win95
|
|
if (!FIsWinNT())
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
// Start with 1 to skip GLOBAL.ASA that is always added
|
|
// in hitobj.cpp when new application gets created
|
|
|
|
for (DWORD i = 1; i < pTemplate->m_cFilemaps; i++)
|
|
{
|
|
|
|
// Add to list of file-application mappings
|
|
g_FileAppMap.AddFileApplication(pTemplate->m_rgpFilemaps[i]->m_szPathTranslated, pApplication);
|
|
|
|
// Check if this directory is already registered for change notification
|
|
// Pick out the directory portion of the path
|
|
TCHAR *szEndOfPath = _tcsrchr(pTemplate->m_rgpFilemaps[i]->m_szPathTranslated, _T('\\'));
|
|
size_t cch = DIFF(szEndOfPath - pTemplate->m_rgpFilemaps[i]->m_szPathTranslated) + 1;
|
|
|
|
if (tempPath.Resize((cch*sizeof(TCHAR)) + sizeof(TCHAR)) == FALSE) {
|
|
|
|
// if failure, continue registering anyway...
|
|
continue;
|
|
}
|
|
TCHAR *szPath = (TCHAR *) tempPath.QueryPtr();
|
|
_tcsncpy(szPath, pTemplate->m_rgpFilemaps[i]->m_szPathTranslated, cch);
|
|
szPath[cch] = 0;
|
|
|
|
// if the template is within the application's physical path, then it is
|
|
// already being monitored.
|
|
|
|
if (pApplication->FPathMonitored(szPath)) {
|
|
|
|
continue;
|
|
}
|
|
|
|
// Register directory for monitoring
|
|
CASPDirMonitorEntry *pDME = NULL;
|
|
if (RegisterASPDirMonitorEntry(szPath, &pDME))
|
|
{
|
|
Assert(pDME);
|
|
pApplication->AddDirMonitorEntry(pDME);
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*===================================================================
|
|
BOOL CTemplateCacheManager::ShutdownCacheChangeNotification
|
|
|
|
Turn off change notification for changes to files in the cache
|
|
|
|
Parameters:
|
|
None
|
|
|
|
Returns:
|
|
Nothing
|
|
===================================================================*/
|
|
BOOL CTemplateCacheManager::ShutdownCacheChangeNotification()
|
|
{
|
|
|
|
BOOL fDoingMemoryTemplates = TRUE;
|
|
// Doesnt happen on Win95
|
|
if (!FIsWinNT())
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
LockTemplateCache();
|
|
|
|
CTemplate *pTemplate = static_cast<CTemplate *>(m_pHashTemplates->MemoryTemplatesBegin());
|
|
while (fDoingMemoryTemplates
|
|
? !m_pHashTemplates->FMemoryTemplatesDblLinkAtEnd(pTemplate)
|
|
: !m_pHashTemplates->FPersistTemplatesDblLinkAtEnd(pTemplate)) {
|
|
|
|
if(pTemplate->m_rgpFilemaps)
|
|
{
|
|
for(UINT i = 0; i < pTemplate->m_cFilemaps; i++)
|
|
{
|
|
// Give up our ref count on the directory monitor entry
|
|
if (pTemplate->m_rgpFilemaps[i]->m_pDME)
|
|
{
|
|
pTemplate->m_rgpFilemaps[i]->m_pDME->Release();
|
|
pTemplate->m_rgpFilemaps[i]->m_pDME = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
pTemplate = static_cast<CTemplate *>(pTemplate->PNext());
|
|
if (fDoingMemoryTemplates && m_pHashTemplates->FMemoryTemplatesDblLinkAtEnd(pTemplate)) {
|
|
fDoingMemoryTemplates = FALSE;
|
|
pTemplate = static_cast<CTemplate *>(m_pHashTemplates->PersistTemplatesBegin());
|
|
}
|
|
}
|
|
|
|
UnLockTemplateCache();
|
|
return TRUE;
|
|
}
|
|
|
|
/* ****************************************************************************
|
|
CIncFileMap member functions
|
|
*/
|
|
|
|
/*===================================================================
|
|
CIncFileMap::CIncFileMap
|
|
|
|
Parameters: N/A
|
|
|
|
Returns: N/A
|
|
===================================================================*/
|
|
|
|
CIncFileMap::CIncFileMap()
|
|
{
|
|
}
|
|
|
|
|
|
/*===================================================================
|
|
CIncFileMap::~CIncFileMap
|
|
|
|
Parameters: N/A
|
|
|
|
Returns: N/A
|
|
===================================================================*/
|
|
|
|
CIncFileMap::~CIncFileMap()
|
|
{
|
|
}
|
|
|
|
|
|
|
|
/*===================================================================
|
|
CIncFileMap::Init
|
|
|
|
Parameters: None
|
|
|
|
Returns: Completion Status
|
|
===================================================================*/
|
|
|
|
HRESULT CIncFileMap::Init()
|
|
{
|
|
HRESULT hr;
|
|
ErrInitCriticalSection(&m_csUpdate, hr);
|
|
if (FAILED(hr))
|
|
return(hr);
|
|
return m_mpszIncFile.Init(CINCFILEBUCKETS);
|
|
}
|
|
|
|
|
|
/*===================================================================
|
|
CIncFileMap::GetIncFile
|
|
|
|
Get an inc-file from the cache, first storing it into cache if it is not yet there.
|
|
|
|
Parameters:
|
|
szIncFile - file name
|
|
ppIncFile - ptr-to-ptr to inc-file (out-parameter)
|
|
|
|
Returns: HRESULT
|
|
===================================================================*/
|
|
|
|
HRESULT CIncFileMap::GetIncFile(const TCHAR *szFile, CIncFile **ppIncFile)
|
|
{
|
|
HRESULT hrInit = S_OK; // return value
|
|
|
|
LockIncFileCache();
|
|
|
|
Assert(IsNormalized(szFile));
|
|
*ppIncFile = static_cast<CIncFile *>(m_mpszIncFile.FindElem(szFile, _tcslen(szFile)*sizeof(TCHAR)));
|
|
|
|
// if we have a cached inc-file at this stage, it must be "reliable," so we use it.
|
|
// else, if we have no cached inc-file, create a new one.
|
|
if (*ppIncFile == NULL)
|
|
{
|
|
if ((*ppIncFile = new CIncFile) == NULL)
|
|
{
|
|
UnLockIncFileCache();
|
|
return E_OUTOFMEMORY;
|
|
}
|
|
|
|
if (SUCCEEDED(hrInit = (*ppIncFile)->Init(szFile)))
|
|
{
|
|
// The hash table will hold a reference to the inc file
|
|
(*ppIncFile)->AddRef();
|
|
m_mpszIncFile.AddElem(*ppIncFile);
|
|
}
|
|
else
|
|
*ppIncFile = NULL;
|
|
|
|
}
|
|
|
|
if (SUCCEEDED(hrInit))
|
|
{
|
|
// The caller will hold a reference to the inc file
|
|
(*ppIncFile)->AddRef();
|
|
}
|
|
|
|
UnLockIncFileCache();
|
|
|
|
return hrInit;
|
|
}
|
|
|
|
|
|
|
|
/*===================================================================
|
|
CIncFileMap::UnInit
|
|
|
|
Parameters: N/A
|
|
|
|
Returns: Completion status
|
|
===================================================================*/
|
|
|
|
HRESULT CIncFileMap::UnInit()
|
|
{
|
|
CIncFile *pNukeIncFile = static_cast<CIncFile *>(m_mpszIncFile.Head());
|
|
while (pNukeIncFile != NULL)
|
|
{
|
|
CIncFile *pNext = static_cast<CIncFile *>(pNukeIncFile->m_pNext);
|
|
pNukeIncFile->OnIncFileDecache();
|
|
pNukeIncFile->Release();
|
|
pNukeIncFile = pNext;
|
|
}
|
|
DeleteCriticalSection(&m_csUpdate);
|
|
return m_mpszIncFile.UnInit();
|
|
}
|
|
|
|
|
|
|
|
/*===================================================================
|
|
CIncFileMap::Flush
|
|
|
|
Parameters:
|
|
szFile - the file to remove from cache
|
|
|
|
Returns:
|
|
None
|
|
===================================================================*/
|
|
|
|
void CIncFileMap::Flush(const TCHAR *szFile)
|
|
{
|
|
LockTemplateAndIncFileCaches();
|
|
|
|
Assert(IsNormalized(szFile));
|
|
CIncFile *pIncFile = static_cast<CIncFile *>(m_mpszIncFile.FindElem(szFile, _tcslen(szFile)*sizeof(TCHAR)));
|
|
|
|
if (pIncFile != NULL)
|
|
{
|
|
if (pIncFile->FlushTemplates())
|
|
{
|
|
// Remove from hash table
|
|
m_mpszIncFile.DeleteElem(szFile, _tcslen(szFile)*sizeof(TCHAR));
|
|
// The hash table gave up its reference
|
|
// to the incfile
|
|
pIncFile->OnIncFileDecache();
|
|
pIncFile->Release();
|
|
}
|
|
}
|
|
|
|
UnLockTemplateAndIncFileCaches();
|
|
}
|
|
|
|
|
|
|
|
/*===================================================================
|
|
CIncFileMap::FlushFiles
|
|
|
|
Parameters:
|
|
szFile - the file prefix to search for in cache
|
|
|
|
Returns:
|
|
None
|
|
===================================================================*/
|
|
|
|
void CIncFileMap::FlushFiles(const TCHAR *szFilePrefix)
|
|
{
|
|
LockTemplateAndIncFileCaches();
|
|
|
|
Assert(IsNormalized(szFilePrefix));
|
|
CIncFile *pIncFile = static_cast<CIncFile *>(m_mpszIncFile.Head());
|
|
|
|
while (pIncFile != NULL)
|
|
{
|
|
CIncFile *pNextFile = static_cast<CIncFile *>(pIncFile->m_pNext);
|
|
|
|
int cchFilePrefix = _tcslen(szFilePrefix);
|
|
if (pIncFile->m_cbKey >= (cchFilePrefix*(int)sizeof(TCHAR)) &&
|
|
_tcsncmp(reinterpret_cast<TCHAR *>(pIncFile->m_pKey), szFilePrefix, cchFilePrefix) == 0)
|
|
{
|
|
#if UNICODE
|
|
DBGPRINTF((DBG_CONTEXT, "FlushFiles: flushing %S\n", pIncFile->m_pKey));
|
|
#else
|
|
DBGPRINTF((DBG_CONTEXT, "FlushFiles: flushing %s\n", pIncFile->m_pKey));
|
|
#endif
|
|
if (pIncFile->FlushTemplates())
|
|
{
|
|
// Remove from hash table
|
|
m_mpszIncFile.DeleteElem(pIncFile->m_pKey, pIncFile->m_cbKey);
|
|
// The hash table gave up its reference
|
|
// to the incfile
|
|
pIncFile->OnIncFileDecache();
|
|
pIncFile->Release();
|
|
}
|
|
}
|
|
|
|
pIncFile = pNextFile;
|
|
}
|
|
|
|
UnLockTemplateAndIncFileCaches();
|
|
}
|
|
|
|
|
|
|
|
/* ****************************************************************************
|
|
Non-class support functions
|
|
*/
|
|
|
|
/*===================================================================
|
|
FFileChangedSinceCached
|
|
Has the file changed since it was cached?
|
|
|
|
Parameters:
|
|
szFile - file name
|
|
ftPrevWriteTime - the file's "previous write time"
|
|
(its last-write-time value when the file was cached)
|
|
|
|
Returns:
|
|
TRUE or FALSE
|
|
===================================================================*/
|
|
BOOL FFileChangedSinceCached(const TCHAR *szFile, FILETIME& ftPrevWriteTime)
|
|
{
|
|
WIN32_FILE_ATTRIBUTE_DATA fad; // win32 file attributes data structure
|
|
BOOL fRet = FALSE; // return value
|
|
|
|
// This fn doesnt exist on Win95. On Win95 we do no caching anyway, so we dont care.
|
|
if (!FIsWinNT())
|
|
return(TRUE);
|
|
|
|
if (FAILED(AspGetFileAttributes(szFile, &fad)))
|
|
{
|
|
// assume file was changed if get file attributes failed
|
|
fRet = TRUE;
|
|
}
|
|
|
|
if( 0 != CompareFileTime( &ftPrevWriteTime, &(fad.ftLastWriteTime) ) )
|
|
{
|
|
// file was changed if file times differ
|
|
fRet = TRUE;
|
|
}
|
|
|
|
return fRet;
|
|
}
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::CTemplateHashTable::TrimPersistCache
|
|
|
|
Parameters:
|
|
dwTrimCount - the number of templates to trim from the cache
|
|
|
|
Returns:
|
|
TRUE - if dwTrimCount was actually trimmed
|
|
FALSE - if exited before dwTrimCount was met
|
|
|
|
===================================================================*/
|
|
|
|
BOOL CTemplateCacheManager::CTemplateHashTable::TrimPersistCache(DWORD dwTrimCount)
|
|
{
|
|
// enter a while loop to trim until the count is reached
|
|
|
|
while(dwTrimCount--) {
|
|
|
|
// if there isn't anything else to trim, we're done. Return FALSE
|
|
// to indicate that dwTrimCount was not met.
|
|
|
|
if (m_dwPersistedTemplates == 0) {
|
|
return(FALSE);
|
|
}
|
|
else {
|
|
|
|
CTemplate *pTemplate;
|
|
|
|
// get the oldest template from the list
|
|
|
|
pTemplate = static_cast<CTemplate *>(PersistTemplatesEnd());
|
|
|
|
// remove the template.
|
|
|
|
RemoveTemplate(pTemplate);
|
|
|
|
ZapTemplate(pTemplate);
|
|
|
|
}
|
|
}
|
|
|
|
// return TRUE to indicate that the TrimCount was met.
|
|
return(TRUE);
|
|
}
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::CTemplateHashTable::ScavengePersistCache
|
|
|
|
Parameters:
|
|
<NONE>
|
|
|
|
Returns:
|
|
VOID
|
|
|
|
===================================================================*/
|
|
VOID CTemplateCacheManager::CTemplateHashTable::ScavengePersistCache()
|
|
{
|
|
CTemplate *pTemplate;
|
|
CTemplate *pTemplateNext;
|
|
|
|
// enter a for loop to look at all persisted templates to see if
|
|
// any memory can be freed. It's memory can be freed only if the
|
|
// ref count is 1 (the sole ref count is for the cache). Also note
|
|
// that the list is re-ordered to move templates to the head of the
|
|
// list that can't have their memory freed at this time because of
|
|
// the ref count.
|
|
|
|
for (pTemplate = static_cast<CTemplate *>(PersistTemplatesBegin());
|
|
(pTemplate != static_cast<CTemplate *>(&m_listPersistTemplates)) && (pTemplate->m_pbStart != NULL);
|
|
pTemplate = pTemplateNext) {
|
|
|
|
pTemplateNext = static_cast<CTemplate *>(pTemplate->PNext());
|
|
|
|
// this check should be safe. The only risk is that we miss a release
|
|
// of the template from 2 to 1, in which case will miss it this time
|
|
// but get it the next time through. AddRef from 1 to 2 is impossible
|
|
// to interrupt because it couldn't be on this list when it gets AddRef'd
|
|
// from 1 to 2 and moving it from this list is protected by the template
|
|
// cache lock which we should be under.
|
|
|
|
if (pTemplate->m_cRefs == 1) {
|
|
|
|
// remove the memory
|
|
|
|
CTemplate::LargeFree(pTemplate->m_pbStart);
|
|
pTemplate->m_pbStart = NULL;
|
|
}
|
|
else {
|
|
|
|
// if some is still using it, move the template to the head of the
|
|
// list so that we'll check again later.
|
|
|
|
pTemplate->PrependTo(m_listPersistTemplates);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*===================================================================
|
|
GetAggregatedTemplCounter()
|
|
|
|
Returns the Template Perf Counter. To do this, initializes a private
|
|
copy of the perfmainblock and aggregates the stats into it.
|
|
|
|
===================================================================*/
|
|
static DWORD GetAggregatedTemplCounter()
|
|
{
|
|
|
|
CPerfMainBlock perfSharedBlk;
|
|
DWORD pdwCounters[C_PERF_PROC_COUNTERS];
|
|
BOOL bInited = FALSE;
|
|
|
|
memset(pdwCounters, 0, sizeof(pdwCounters));
|
|
|
|
if (!(bInited = (perfSharedBlk.Init() == S_OK)));
|
|
|
|
else {
|
|
|
|
perfSharedBlk.GetStats(pdwCounters);
|
|
}
|
|
|
|
if (bInited)
|
|
perfSharedBlk.UnInit();
|
|
|
|
return(pdwCounters[ID_TEMPLCACHE]);
|
|
}
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::InitPersistCache
|
|
|
|
Parameters:
|
|
[none]
|
|
|
|
Returns:
|
|
BOOL to indicate if the init was successful
|
|
|
|
===================================================================*/
|
|
|
|
BOOL CTemplateCacheManager::InitPersistCache()
|
|
{
|
|
HANDLE hImpersonationToken = NULL;
|
|
BOOL fRevertedToSelf = FALSE;
|
|
HANDLE hThread;
|
|
|
|
hThread = GetCurrentThread();
|
|
|
|
if (OpenThreadToken( hThread,
|
|
TOKEN_READ | TOKEN_IMPERSONATE,
|
|
TRUE,
|
|
&hImpersonationToken )) {
|
|
|
|
RevertToSelf();
|
|
fRevertedToSelf = TRUE;
|
|
}
|
|
|
|
// get the PersistCacheDir from the globals table
|
|
|
|
strcpy(m_szPersistCacheDir,Glob(pszPersistTemplateDir));
|
|
|
|
// Check to see if the directory exists...
|
|
|
|
DWORD dirAttribs = GetFileAttributesA(m_szPersistCacheDir);
|
|
|
|
if ((dirAttribs == 0xffffffff)
|
|
|| !(dirAttribs & FILE_ATTRIBUTE_DIRECTORY)) {
|
|
|
|
MSG_Error(IDS_CACHE_DIR_MISSING);
|
|
m_fFailedToInitPersistCache = TRUE;
|
|
}
|
|
else {
|
|
|
|
// append the trailing slash to the directory name
|
|
|
|
strcat(m_szPersistCacheDir,"\\");
|
|
|
|
// next, cleanup the temp directory.
|
|
|
|
// since asp.dll can execute in many process simultaneously, we'll
|
|
// check the perf counter to see if there are any templates
|
|
// cached anywhere on the system.
|
|
|
|
if (GetAggregatedTemplCounter() == 0) {
|
|
|
|
CHAR DirectoryWildcard[MAX_PATH];
|
|
WIN32_FIND_DATAA win32FindData;
|
|
|
|
strcpy(DirectoryWildcard, m_szPersistCacheDir);
|
|
strcat(DirectoryWildcard, "ASP*.TMP");
|
|
|
|
// use FindFirstFile to begin the enumeration of all files in the
|
|
// temp directory.
|
|
|
|
HANDLE hDirectory = FindFirstFileA( DirectoryWildcard, &win32FindData );
|
|
|
|
if ( hDirectory != INVALID_HANDLE_VALUE ) {
|
|
|
|
BOOL success = TRUE;
|
|
|
|
while ( success ) {
|
|
|
|
char fileName[MAX_PATH];
|
|
|
|
// FindFirst/FindNext returns just the filename. Build up
|
|
// the entire path and then call DeleteFile. We'll ignore
|
|
// errors as there isn't much we could do with the error
|
|
// except fail the cache init.
|
|
|
|
strcpy( fileName, m_szPersistCacheDir );
|
|
strcat( fileName, win32FindData.cFileName );
|
|
|
|
DeleteFileA( fileName );
|
|
|
|
success = FindNextFileA( hDirectory, &win32FindData );
|
|
}
|
|
|
|
FindClose( hDirectory );
|
|
}
|
|
else {
|
|
GetLastError();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (fRevertedToSelf) {
|
|
SetThreadToken(&hThread, hImpersonationToken);
|
|
}
|
|
|
|
return(!m_fFailedToInitPersistCache);
|
|
}
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::CTemplateHashTable::CanPersistTemplate
|
|
|
|
Parameters:
|
|
pTemplate - The template to test for persistability
|
|
|
|
Returns:
|
|
BOOL to indicate if template can be persisted.
|
|
|
|
===================================================================*/
|
|
|
|
BOOL CTemplateCacheManager::CTemplateHashTable::CanPersistTemplate(CTemplate *pTemplate)
|
|
{
|
|
|
|
// if MaxFiles is zero, then the persist cache is disabled
|
|
|
|
if (Glob(dwPersistTemplateMaxFiles) == 0) {
|
|
return(FALSE);
|
|
}
|
|
|
|
// can't persist if the persist cache failed to init
|
|
|
|
if (m_fFailedToInitPersistCache == TRUE) {
|
|
return(FALSE);
|
|
}
|
|
|
|
// can't persist templates that are marked as debuggable. The
|
|
// script engines need access to the memory.
|
|
|
|
if (pTemplate->FDebuggable()) {
|
|
return(FALSE);
|
|
}
|
|
|
|
// at this point, we're going to return true. The next part of the code
|
|
// trims the cache as necessary.
|
|
|
|
if (m_dwPersistedTemplates >= Glob(dwPersistTemplateMaxFiles)) {
|
|
TrimPersistCache(m_dwPersistedTemplates - Glob(dwPersistTemplateMaxFiles) + 1);
|
|
}
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::CTemplateHashTable::InsertTemplate
|
|
|
|
Parameters:
|
|
pTemplate - Template to insert into the memory cache
|
|
|
|
Returns:
|
|
LK_RETCODE indicating the success of the insertion
|
|
|
|
===================================================================*/
|
|
|
|
LK_RETCODE CTemplateCacheManager::CTemplateHashTable::InsertTemplate(CTemplate *pTemplate)
|
|
{
|
|
LK_RETCODE rcode = InsertRecord(pTemplate, true);
|
|
|
|
if (rcode == LK_SUCCESS) {
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Incr_MEMORYTEMPLCACHE();
|
|
g_PerfData.Incr_TEMPLCACHE();
|
|
#endif
|
|
m_dwInMemoryTemplates++;
|
|
pTemplate->PrependTo(m_listMemoryTemplates);
|
|
pTemplate->SetHashTablePtr(this);
|
|
}
|
|
|
|
ScavengePersistCache();
|
|
|
|
return rcode;
|
|
}
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::CTemplateHashTable::RemoveTemplate
|
|
|
|
Parameters:
|
|
pTemplate - Template to remove from cache
|
|
fPersist - indicate if memory template is a candidate for persist
|
|
|
|
Returns:
|
|
LK_RETCODE indicating the success of the removal
|
|
|
|
===================================================================*/
|
|
|
|
LK_RETCODE CTemplateCacheManager::CTemplateHashTable::RemoveTemplate(CTemplate *pTemplate, BOOL fPersist)
|
|
{
|
|
LK_RETCODE rcode = LK_SUCCESS;
|
|
#if DBG_PERSTEMPL
|
|
DBGPRINTF((DBG_CONTEXT,
|
|
"RemoveTemplate entered.\n\tTemplate = %s.\n\tfPersist = %d.\n\tFIsPersisted = %d\n",
|
|
pTemplate->GetSourceFileName(),
|
|
fPersist,
|
|
pTemplate->FIsPersisted()));
|
|
#endif
|
|
|
|
// if the template isn't in the cache, or if the template isn't on this
|
|
// particular hash table, then just bail. Nothing to
|
|
// do here. It may not be on this particular hash table because the entire
|
|
// table may have been torn off the global cache manager and scheduled for
|
|
// cleanup on the flush thread. In this case, we're checking the wrong
|
|
// table. The flush thread will eventually clean this one up.
|
|
|
|
if (pTemplate->FIsEmpty() || (pTemplate->GetHashTablePtr() != this)) {
|
|
|
|
return LK_NO_SUCH_KEY;
|
|
}
|
|
|
|
// no matter what, this template is going to be unlinked from it's
|
|
// current CDblLink
|
|
|
|
pTemplate->UnLink();
|
|
|
|
// update the appropriate counter
|
|
|
|
if (pTemplate->FIsPersisted() == FALSE) {
|
|
|
|
// decrement the number of InMemoryTemplates...
|
|
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Decr_MEMORYTEMPLCACHE();
|
|
#endif
|
|
m_dwInMemoryTemplates--;
|
|
}
|
|
else {
|
|
m_dwPersistedTemplates--;
|
|
}
|
|
|
|
// if asked to be persisted, see if it's a candidate to be persisted.
|
|
|
|
if (fPersist && CanPersistTemplate(pTemplate)) {
|
|
|
|
// so persist it.
|
|
|
|
if (pTemplate->PersistData(m_szPersistCacheDir) != S_OK) {
|
|
|
|
// a failure will result in the record being deleted.
|
|
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Decr_TEMPLCACHE();
|
|
#endif
|
|
rcode = DeleteRecord(pTemplate);
|
|
|
|
}
|
|
else {
|
|
|
|
// if successfully persisted, then add to the list of
|
|
// persisted templates
|
|
|
|
pTemplate->PrependTo(m_listPersistTemplates);
|
|
|
|
m_dwPersistedTemplates++;
|
|
}
|
|
}
|
|
else {
|
|
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Decr_TEMPLCACHE();
|
|
#endif
|
|
// if not asked to persist, then delete the record.
|
|
|
|
rcode = DeleteRecord(pTemplate);
|
|
}
|
|
|
|
ScavengePersistCache();
|
|
|
|
return rcode;
|
|
}
|
|
|
|
/*===================================================================
|
|
CTemplateCacheManager::CTemplateHashTable::FindTemplate
|
|
|
|
Parameters:
|
|
rTemplate - the key for the template being looked up
|
|
|
|
Returns:
|
|
LK_RETCODE indicating the success of the look up
|
|
|
|
===================================================================*/
|
|
|
|
LK_RETCODE CTemplateCacheManager::CTemplateHashTable::FindTemplate(const CTemplateKey &rTemplateKey, CTemplate **ppTemplate)
|
|
{
|
|
|
|
#if DBG_PERSTEMPL
|
|
|
|
DBGPRINTF((DBG_CONTEXT,
|
|
"FindTemplate entered\n\tLooking for %s\n",
|
|
rTemplateKey.szPathTranslated));
|
|
#endif
|
|
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Incr_MEMORYTEMPLCACHETRYS();
|
|
g_PerfData.Incr_TEMPLCACHETRYS();
|
|
#endif
|
|
|
|
LK_RETCODE rcode = FindKey(&rTemplateKey, ppTemplate);
|
|
|
|
// see if we found it.
|
|
|
|
if (rcode == LK_SUCCESS) {
|
|
|
|
#if DBG_PERSTEMPL
|
|
|
|
DBGPRINTF((DBG_CONTEXT,
|
|
"Template found\n\tfPersisted = %d\n",
|
|
(*ppTemplate)->FIsPersisted()));
|
|
#endif
|
|
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Incr_TEMPLCACHEHITS();
|
|
#endif
|
|
// found it. Is it persisted?
|
|
|
|
if ((*ppTemplate)->FIsPersisted()) {
|
|
|
|
// It is persisted. Unlink it from the persisted list.
|
|
|
|
(*ppTemplate)->UnLink();
|
|
|
|
m_dwPersistedTemplates--;
|
|
|
|
// unpersist it
|
|
|
|
if ((*ppTemplate)->UnPersistData() != S_OK) {
|
|
|
|
// error occurred
|
|
|
|
// get the template out of the cache
|
|
|
|
DeleteRecord(*ppTemplate);
|
|
|
|
// release the reference that the cache had on the template
|
|
|
|
(*ppTemplate)->Release();
|
|
|
|
// NULL out *ppTemplate so that the caller doesn't think they
|
|
// got a valid template
|
|
|
|
*ppTemplate = NULL;
|
|
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Decr_TEMPLCACHE();
|
|
#endif
|
|
// return NO_SUCH_KEY so that a new template will be built
|
|
|
|
return(LK_NO_SUCH_KEY);
|
|
}
|
|
|
|
// bump the number of in memory templates
|
|
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Incr_MEMORYTEMPLCACHE();
|
|
#endif
|
|
m_dwInMemoryTemplates++;
|
|
}
|
|
else {
|
|
#ifndef PERF_DISABLE
|
|
g_PerfData.Incr_MEMORYTEMPLCACHEHITS();
|
|
#endif
|
|
}
|
|
|
|
// add it to, or move it to the top of, the memory templates
|
|
|
|
(*ppTemplate)->PrependTo(m_listMemoryTemplates);
|
|
}
|
|
|
|
ScavengePersistCache();
|
|
|
|
return rcode;
|
|
}
|