src/TGitCache/GITStatusCache.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // External Cache Copyright (C) 2005-2006,2008,2010,2014 - TortoiseSVN
   4 // Copyright (C) 2008-2017 - TortoiseGit
   5
   6 // This program is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU General Public License
   8 // as published by the Free Software Foundation; either version 2
   9 // of the License, or (at your option) any later version.
  10
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software Foundation,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20
  21 #include "stdafx.h"
  22 #include "GitAdminDir.h"
  23 #include "GitStatus.h"
  24 #include "GitStatusCache.h"
  25 #include "CacheInterface.h"
  26 #include <ShlObj.h>
  27 #include "PathUtils.h"
  28
  29 //////////////////////////////////////////////////////////////////////////
  30
  31 #define BLOCK_PATH_DEFAULT_TIMEOUT      600             // 10 minutes
  32 #define BLOCK_PATH_MAX_TIMEOUT          1200    // 20 minutes
  33
  34 #define CACHEDISKVERSION 2
  35
  36 #ifdef _WIN64
  37 #define STATUSCACHEFILENAME L"cache64"
  38 #else
  39 #define STATUSCACHEFILENAME L"cache"
  40 #endif
  41
  42 CGitStatusCache* CGitStatusCache::m_pInstance;
  43
  44 CGitStatusCache& CGitStatusCache::Instance()
  45 {
  46         ATLASSERT(m_pInstance);
  47         return *m_pInstance;
  48 }
  49
  50 void CGitStatusCache::Create()
  51 {
  52         ATLASSERT(!m_pInstance);
  53         m_pInstance = new CGitStatusCache;
  54
  55         m_pInstance->watcher.SetFolderCrawler(&m_pInstance->m_folderCrawler);
  56
  57         if (!CRegStdDWORD(L"Software\\TortoiseGit\\CacheSave", TRUE))
  58                 return;
  59
  60 #define LOADVALUEFROMFILE(x) if (fread(&x, sizeof(x), 1, pFile)!=1) goto exit;
  61 #define LOADVALUEFROMFILE2(x) if (fread(&x, sizeof(x), 1, pFile)!=1) goto error;
  62         unsigned int value = (unsigned int)-1;
  63         // find the location of the cache
  64         CString path = CPathUtils::GetLocalAppDataDirectory();
  65         CString path2;
  66         if (!path.IsEmpty())
  67         {
  68                 path += STATUSCACHEFILENAME;
  69                 // in case the cache file is corrupt, we could crash while
  70                 // reading it! To prevent crashing every time once that happens,
  71                 // we make a copy of the cache file and use that copy to read from.
  72                 // if that copy is corrupt, the original file won't exist anymore
  73                 // and the second time we start up and try to read the file,
  74                 // it's not there anymore and we start from scratch without a crash.
  75                 path2 = path;
  76                 path2 += L'2';
  77                 DeleteFile(path2);
  78                 CopyFile(path, path2, FALSE);
  79                 DeleteFile(path);
  80                 CAutoFILE pFile = _wfsopen(path2, L"rb", _SH_DENYWR);
  81                 if (pFile)
  82                 {
  83                         try
  84                         {
  85                                 LOADVALUEFROMFILE(value);
  86                                 if (value != CACHEDISKVERSION)
  87                                 {
  88                                         goto error;
  89                                 }
  90                                 int mapsize = 0;
  91                                 LOADVALUEFROMFILE(mapsize);
  92                                 for (int i=0; i<mapsize; ++i)
  93                                 {
  94                                         LOADVALUEFROMFILE2(value);
  95                                         if (value > MAX_PATH)
  96                                                 goto error;
  97                                         if (value)
  98                                         {
  99                                                 CString sKey;
 100                                                 if (fread(sKey.GetBuffer(value+1), sizeof(TCHAR), value, pFile)!=value)
 101                                                 {
 102                                                         sKey.ReleaseBuffer(0);
 103                                                         goto error;
 104                                                 }
 105                                                 sKey.ReleaseBuffer(value);
 106                                                 auto cacheddir = std::make_unique<CCachedDirectory>();
 107                                                 if (!cacheddir.get() || !cacheddir->LoadFromDisk(pFile))
 108                                                 {
 109                                                         cacheddir.reset();
 110                                                         goto error;
 111                                                 }
 112                                                 CTGitPath KeyPath = CTGitPath(sKey);
 113                                                 if (m_pInstance->IsPathAllowed(KeyPath))
 114                                                 {
 115                                                         // only add the path to the watch list if it is versioned
 116                                                         if ((cacheddir->GetCurrentFullStatus() != git_wc_status_unversioned)&&(cacheddir->GetCurrentFullStatus() != git_wc_status_none))
 117                                                                 m_pInstance->watcher.AddPath(KeyPath, false);
 118
 119                                                         m_pInstance->m_directoryCache[KeyPath] = cacheddir.release();
 120
 121                                                         // do *not* add the paths for crawling!
 122                                                         // because crawled paths will trigger a shell
 123                                                         // notification, which makes the desktop flash constantly
 124                                                         // until the whole first time crawling is over
 125                                                         // m_pInstance->AddFolderForCrawling(KeyPath);
 126                                                 }
 127                                         }
 128                                 }
 129                         }
 130                         catch (CAtlException)
 131                         {
 132                                 goto error;
 133                         }
 134                 }
 135         }
 136 exit:
 137         DeleteFile(path2);
 138         m_pInstance->watcher.ClearInfoMap();
 139         CTraceToOutputDebugString::Instance()(__FUNCTION__ ": cache loaded from disk successfully!\n");
 140         return;
 141 error:
 142         DeleteFile(path2);
 143         m_pInstance->watcher.ClearInfoMap();
 144         Destroy();
 145         m_pInstance = new CGitStatusCache;
 146         CTraceToOutputDebugString::Instance()(__FUNCTION__ ": cache not loaded from disk\n");
 147 }
 148
 149 bool CGitStatusCache::SaveCache()
 150 {
 151         if (!CRegStdDWORD(L"Software\\TortoiseGit\\CacheSave", TRUE))
 152                 return false;
 153
 154 #define WRITEVALUETOFILE(x) if (fwrite(&x, sizeof(x), 1, pFile)!=1) goto error;
 155         unsigned int value = 0;
 156         // save the cache to disk
 157         // find a location to write the cache to
 158         CString path = CPathUtils::GetLocalAppDataDirectory();
 159         if (!path.IsEmpty())
 160         {
 161                 path += STATUSCACHEFILENAME;
 162                 CAutoFILE pFile = _wfsopen(path, L"wb", SH_DENYRW);
 163                 if (pFile)
 164                 {
 165                         value = CACHEDISKVERSION;
 166                         WRITEVALUETOFILE(value);
 167                         value = (int)m_pInstance->m_directoryCache.size();
 168                         WRITEVALUETOFILE(value);
 169                         for (auto I = m_pInstance->m_directoryCache.cbegin(); I != m_pInstance->m_directoryCache.cend(); ++I)
 170                         {
 171                                 if (!I->second)
 172                                 {
 173                                         value = 0;
 174                                         WRITEVALUETOFILE(value);
 175                                         continue;
 176                                 }
 177                                 const CString& key = I->first.GetWinPathString();
 178                                 value = key.GetLength();
 179                                 WRITEVALUETOFILE(value);
 180                                 if (value)
 181                                 {
 182                                         if (fwrite((LPCTSTR)key, sizeof(TCHAR), value, pFile)!=value)
 183                                                 goto error;
 184                                         if (!I->second->SaveToDisk(pFile))
 185                                                 goto error;
 186                                 }
 187                         }
 188                 }
 189         }
 190         CTraceToOutputDebugString::Instance()(_T(__FUNCTION__) L": cache saved to disk at %s\n", (LPCTSTR)path);
 191         return true;
 192 error:
 193         Destroy();
 194         DeleteFile(path);
 195         return false;
 196 }
 197
 198 void CGitStatusCache::Destroy()
 199 {
 200         if (m_pInstance)
 201         {
 202                 m_pInstance->Stop();
 203                 Sleep(100);
 204                 delete m_pInstance;
 205                 m_pInstance = nullptr;
 206         }
 207 }
 208
 209 void CGitStatusCache::Stop()
 210 {
 211         watcher.Stop();
 212         m_folderCrawler.Stop();
 213         m_shellUpdater.Stop();
 214 }
 215
 216 void CGitStatusCache::Init()
 217 {
 218         m_folderCrawler.Initialise();
 219         m_shellUpdater.Initialise();
 220 }
 221
 222 CGitStatusCache::CGitStatusCache(void)
 223 {
 224         #define forever DWORD(-1)
 225         AutoLocker lock(m_NoWatchPathCritSec);
 226         KNOWNFOLDERID folderids[] = { FOLDERID_Cookies, FOLDERID_History, FOLDERID_InternetCache, FOLDERID_Windows, FOLDERID_CDBurning, FOLDERID_Fonts, FOLDERID_RecycleBinFolder }; //FOLDERID_SearchHistory
 227         for (KNOWNFOLDERID folderid : folderids)
 228                 m_NoWatchPaths[CTGitPath(GetSpecialFolder(folderid))] = forever;
 229         m_bClearMemory = false;
 230         m_mostRecentExpiresAt = 0;
 231 }
 232
 233 CGitStatusCache::~CGitStatusCache(void)
 234 {
 235         CAutoWriteLock writeLock(m_guard);
 236         ClearCache();
 237 }
 238
 239 void CGitStatusCache::Refresh()
 240 {
 241         m_shellCache.RefreshIfNeeded();
 242         if (!m_pInstance->m_directoryCache.empty())
 243         {
 244                 auto I = m_pInstance->m_directoryCache.cbegin();
 245                 for (/* no init */; I != m_pInstance->m_directoryCache.cend(); ++I)
 246                 {
 247                         if (m_shellCache.IsPathAllowed(I->first.GetWinPath()))
 248                                 I->second->RefreshMostImportant();
 249                         else
 250                         {
 251                                 CGitStatusCache::Instance().RemoveCacheForPath(I->first);
 252                                 I = m_pInstance->m_directoryCache.cbegin();
 253                                 if (I == m_pInstance->m_directoryCache.cend())
 254                                         break;
 255                         }
 256                 }
 257         }
 258 }
 259
 260 bool CGitStatusCache::IsPathGood(const CTGitPath& path)
 261 {
 262         AutoLocker lock(m_NoWatchPathCritSec);
 263         for (auto it = m_NoWatchPaths.cbegin(); it != m_NoWatchPaths.cend(); ++it)
 264         {
 265                 // the ticks check is necessary here, because RemoveTimedoutBlocks is only called within the FolderCrawler loop
 266                 // and we might miss update calls
 267                 // TODO: maybe we also need to check if index.lock and HEAD.lock still exists after a specific timeout (if we miss update notifications for these files too often)
 268                 if (GetTickCount64() < it->second && it->first.IsAncestorOf(path))
 269                 {
 270                         CTraceToOutputDebugString::Instance()(_T(__FUNCTION__) L": path not good: %s\n", it->first.GetWinPath());
 271                         return false;
 272                 }
 273         }
 274         return true;
 275 }
 276
 277 bool CGitStatusCache::BlockPath(const CTGitPath& path, ULONGLONG timeout /* = 0 */)
 278 {
 279         if (timeout == 0)
 280                 timeout = BLOCK_PATH_DEFAULT_TIMEOUT;
 281
 282         if (timeout > BLOCK_PATH_MAX_TIMEOUT)
 283                 timeout = BLOCK_PATH_MAX_TIMEOUT;
 284
 285         timeout = GetTickCount64() + (timeout * 1000);  // timeout is in seconds, but we need the milliseconds
 286
 287         AutoLocker lock(m_NoWatchPathCritSec);
 288         m_NoWatchPaths[path.GetDirectory()] = timeout;
 289
 290         return true;
 291 }
 292
 293 bool CGitStatusCache::UnBlockPath(const CTGitPath& path)
 294 {
 295         bool ret = false;
 296         AutoLocker lock(m_NoWatchPathCritSec);
 297         std::map<CTGitPath, ULONGLONG>::iterator it = m_NoWatchPaths.find(path.GetDirectory());
 298         if (it != m_NoWatchPaths.end())
 299         {
 300                 CTraceToOutputDebugString::Instance()(_T(__FUNCTION__) L": path removed from no good: %s\n", it->first.GetWinPath());
 301                 m_NoWatchPaths.erase(it);
 302                 ret = true;
 303         }
 304         AddFolderForCrawling(path.GetDirectory());
 305
 306         return ret;
 307 }
 308
 309 bool CGitStatusCache::RemoveTimedoutBlocks()
 310 {
 311         bool ret = false;
 312         ULONGLONG currentTicks = GetTickCount64();
 313         AutoLocker lock(m_NoWatchPathCritSec);
 314         std::vector<CTGitPath> toRemove;
 315         for (auto it = m_NoWatchPaths.cbegin(); it != m_NoWatchPaths.cend(); ++it)
 316         {
 317                 if (currentTicks > it->second)
 318                         toRemove.push_back(it->first);
 319         }
 320         if (!toRemove.empty())
 321         {
 322                 for (auto it = toRemove.cbegin(); it != toRemove.cend(); ++it)
 323                         ret = ret || UnBlockPath(*it);
 324         }
 325
 326         return ret;
 327 }
 328
 329 void CGitStatusCache::UpdateShell(const CTGitPath& path)
 330 {
 331         if (path.IsEquivalentToWithoutCase(m_mostRecentPath))
 332                 m_mostRecentExpiresAt = 0;
 333         m_shellUpdater.AddPathForUpdate(path);
 334 }
 335
 336 void CGitStatusCache::ClearCache()
 337 {
 338         CAutoWriteLock writeLock(m_guard);
 339         for (CCachedDirectory::CachedDirMap::iterator I = m_directoryCache.begin(); I != m_directoryCache.end(); ++I)
 340         {
 341                 delete I->second;
 342                 I->second = nullptr;
 343         }
 344         m_directoryCache.clear();
 345 }
 346
 347 bool CGitStatusCache::RemoveCacheForDirectory(CCachedDirectory * cdir)
 348 {
 349         if (!cdir)
 350                 return false;
 351
 352         CAutoWriteLock writeLock(m_guard);
 353         if (!cdir->m_childDirectories.empty())
 354         {
 355                 for (auto it = cdir->m_childDirectories.begin(); it != cdir->m_childDirectories.end();)
 356                 {
 357                         CCachedDirectory * childdir = CGitStatusCache::Instance().GetDirectoryCacheEntryNoCreate(it->first);
 358                         if ((childdir) && (!cdir->m_directoryPath.IsEquivalentTo(childdir->m_directoryPath)) && (cdir->m_directoryPath.GetFileOrDirectoryName() != L".."))
 359                                 RemoveCacheForDirectory(childdir);
 360                         cdir->m_childDirectories.erase(it->first);
 361                         it = cdir->m_childDirectories.begin();
 362                 }
 363         }
 364         cdir->m_childDirectories.clear();
 365         m_directoryCache.erase(cdir->m_directoryPath);
 366
 367         // we could have entries versioned and/or stored in our cache which are
 368         // children of the specified directory, but not in the m_childDirectories
 369         // member
 370         CCachedDirectory::ItDir itMap = m_directoryCache.lower_bound(cdir->m_directoryPath);
 371         do
 372         {
 373                 if (itMap != m_directoryCache.end())
 374                 {
 375                         if (cdir->m_directoryPath.IsAncestorOf(itMap->first))
 376                         {
 377                                 // just in case (see TortoiseSVN issue #255)
 378                                 if (itMap->second == cdir)
 379                                         m_directoryCache.erase(itMap);
 380                                 else
 381                                         RemoveCacheForDirectory(itMap->second);
 382                         }
 383                 }
 384                 itMap = m_directoryCache.lower_bound(cdir->m_directoryPath);
 385         } while (itMap != m_directoryCache.end() && cdir->m_directoryPath.IsAncestorOf(itMap->first));
 386
 387         CTraceToOutputDebugString::Instance()(_T(__FUNCTION__) L": removed from cache %s\n", cdir->m_directoryPath.GetWinPath());
 388         delete cdir;
 389         return true;
 390 }
 391
 392 void CGitStatusCache::RemoveCacheForPath(const CTGitPath& path)
 393 {
 394         // Stop the crawler starting on a new folder
 395         CCrawlInhibitor crawlInhibit(&m_folderCrawler);
 396         CCachedDirectory::ItDir itMap;
 397         CCachedDirectory* dirtoremove = nullptr;
 398
 399         itMap = m_directoryCache.find(path);
 400         if ((itMap != m_directoryCache.end())&&(itMap->second))
 401                 dirtoremove = itMap->second;
 402         if (!dirtoremove)
 403                 return;
 404         ATLASSERT(path.IsEquivalentToWithoutCase(dirtoremove->m_directoryPath));
 405         RemoveCacheForDirectory(dirtoremove);
 406 }
 407
 408 CCachedDirectory * CGitStatusCache::GetDirectoryCacheEntry(const CTGitPath& path, bool isAddToWatch)
 409 {
 410         ATLASSERT(path.IsDirectory() || !PathFileExists(path.GetWinPath()));
 411
 412         CAutoReadLock readLock(m_guardcacheddirectories);
 413         CCachedDirectory::ItDir itMap;
 414         itMap = m_directoryCache.find(path);
 415         if ((itMap != m_directoryCache.end())&&(itMap->second))
 416         {
 417                 // We've found this directory in the cache
 418                 return itMap->second;
 419         }
 420         else
 421         {
 422                 // if the CCachedDirectory is nullptr but the path is in our cache,
 423                 // that means that path got invalidated and needs to be treated
 424                 // as if it never was in our cache. So we remove the last remains
 425                 // from the cache and start from scratch.
 426
 427                 CAutoWriteLock writeLock(m_guardcacheddirectories);
 428                 // Since above there's a small chance that before we can upgrade to
 429                 // writer state some other thread gained writer state and changed
 430                 // the data, we have to recreate the iterator here again.
 431                 itMap = m_directoryCache.find(path);
 432                 if (itMap!=m_directoryCache.end())
 433                 {
 434                         CAutoWriteLock writeLock2(m_guard); // needed? Can this happen?
 435                         delete itMap->second;
 436                         m_directoryCache.erase(itMap);
 437                 }
 438                 // We don't know anything about this directory yet - lets add it to our cache
 439                 // but only if it exists!
 440                 if (path.Exists() && m_shellCache.IsPathAllowed(path.GetWinPath()) && !GitAdminDir::IsAdminDirPath(path.GetWinPath()))
 441                 {
 442                         // some notifications are for files which got removed/moved around.
 443                         // In such cases, the CTGitPath::IsDirectory() will return true (it assumes a directory if
 444                         // the path doesn't exist). Which means we can get here with a path to a file
 445                         // instead of a directory.
 446                         // Since we're here most likely called from the crawler thread, the file could exist
 447                         // again. If that's the case, just do nothing
 448                         if (path.IsDirectory()||(!path.Exists()))
 449                         {
 450                                 CTraceToOutputDebugString::Instance()(_T(__FUNCTION__) L": adding %s to our cache\n", path.GetWinPath());
 451                                 CCachedDirectory * newcdir = new CCachedDirectory(path);
 452                                 if (newcdir)
 453                                 {
 454                                         CCachedDirectory * cdir = m_directoryCache.insert(m_directoryCache.lower_bound(path), std::make_pair(path, newcdir))->second;
 455                                         CString gitdir;
 456                                         if ((!path.IsEmpty())&&(path.HasAdminDir(&gitdir))&&isAddToWatch)
 457                                         {
 458                                                 /* Just watch version path */
 459                                                 watcher.AddPath(gitdir);
 460                                                 watcher.AddPath(path);
 461                                         }
 462                                         return cdir;
 463                                 }
 464                                 m_bClearMemory = true;
 465                         }
 466                 }
 467                 return nullptr;
 468         }
 469 }
 470
 471 CCachedDirectory * CGitStatusCache::GetDirectoryCacheEntryNoCreate(const CTGitPath& path)
 472 {
 473         ATLASSERT(path.IsDirectory() || !PathFileExists(path.GetWinPath()));
 474
 475         CAutoReadLock readLock(m_guardcacheddirectories);
 476         CCachedDirectory::ItDir itMap;
 477         itMap = m_directoryCache.find(path);
 478         if(itMap != m_directoryCache.end())
 479         {
 480                 // We've found this directory in the cache
 481                 return itMap->second;
 482         }
 483         return nullptr;
 484 }
 485
 486 /* Fetch is true, means fetch status from */
 487 /* Fetch is false, means fetch status from cache */
 488 CStatusCacheEntry CGitStatusCache::GetStatusForPath(const CTGitPath& path, DWORD flags,  bool bFetch /* = true */)
 489 {
 490         bool bRecursive = !!(flags & TGITCACHE_FLAGS_RECUSIVE_STATUS);
 491
 492         // Check a very short-lived 'mini-cache' of the last thing we were asked for.
 493         LONGLONG now = (LONGLONG)GetTickCount64();
 494         if(now-m_mostRecentExpiresAt < 0)
 495         {
 496                 if (path.IsEquivalentTo(m_mostRecentPath))
 497                         return m_mostRecentStatus;
 498         }
 499         {
 500                 AutoLocker lock(m_critSec);
 501                 m_mostRecentPath = path;
 502                 m_mostRecentExpiresAt = now + 1000;
 503         }
 504
 505         if (IsPathGood(path))
 506         {
 507                 // Stop the crawler starting on a new folder while we're doing this much more important task...
 508                 // Please note, that this may be a second "lock" used concurrently to the one in RemoveCacheForPath().
 509                 CCrawlInhibitor crawlInhibit(&m_folderCrawler);
 510
 511                 CTGitPath dirpath = path.GetContainingDirectory();
 512                 if ((dirpath.IsEmpty()) || (!m_shellCache.IsPathAllowed(dirpath.GetWinPath())))
 513                         dirpath = path.GetDirectory();
 514                 CCachedDirectory * cachedDir = GetDirectoryCacheEntry(dirpath);
 515                 if (cachedDir)
 516                 {
 517                         //CTraceToOutputDebugString::Instance()(_T(__FUNCTION__) L": GetStatusForMember %d\n", bFetch);
 518                         CStatusCacheEntry entry = cachedDir->GetStatusForMember(path, bRecursive, bFetch);
 519                         {
 520                                 AutoLocker lock(m_critSec);
 521                                 m_mostRecentStatus = entry;
 522                                 return m_mostRecentStatus;
 523                         }
 524                 }
 525         }
 526         else
 527         {
 528                 // path is blocked for some reason: return the cached status if we have one
 529                 // we do here only a cache search, absolutely no disk access is allowed!
 530                 auto cachedDir = GetDirectoryCacheEntryNoCreate(path.GetDirectory());
 531                 if (cachedDir)
 532                 {
 533                         if (path.IsDirectory())
 534                         {
 535                                 CStatusCacheEntry entry = cachedDir->GetOwnStatus(false);
 536                                 AutoLocker lock(m_critSec);
 537                                 m_mostRecentStatus = entry;
 538                                 return m_mostRecentStatus;
 539                         }
 540                         else
 541                         {
 542                                 // We've found this directory in the cache
 543                                 CStatusCacheEntry entry = cachedDir->GetCacheStatusForMember(path);
 544                                 {
 545                                         AutoLocker lock(m_critSec);
 546                                         m_mostRecentStatus = entry;
 547                                         return m_mostRecentStatus;
 548                                 }
 549                         }
 550                 }
 551         }
 552         AutoLocker lock(m_critSec);
 553         CTraceToOutputDebugString::Instance()(_T(__FUNCTION__) L": ignored no good path %s\n", path.GetWinPath());
 554         m_mostRecentStatus = CStatusCacheEntry();
 555         if (m_shellCache.ShowExcludedAsNormal() && path.IsDirectory() && m_shellCache.HasGITAdminDir(path.GetWinPath(), true))
 556         {
 557                 CTraceToOutputDebugString::Instance()(_T(__FUNCTION__) L": force status %s\n", path.GetWinPath());
 558                 m_mostRecentStatus.ForceStatus(git_wc_status_normal);
 559         }
 560         return m_mostRecentStatus;
 561 }
 562
 563 void CGitStatusCache::AddFolderForCrawling(const CTGitPath& path)
 564 {
 565         m_folderCrawler.AddDirectoryForUpdate(path);
 566 }
 567
 568 void CGitStatusCache::CloseWatcherHandles(HANDLE hFile)
 569 {
 570         CTGitPath path = watcher.CloseInfoMap(hFile);
 571         if (!path.IsEmpty())
 572                 m_folderCrawler.BlockPath(path);
 573         CGitStatusCache::Instance().m_GitStatus.ReleasePathsRecursively(path.GetWinPathString());
 574 }
 575
 576 void CGitStatusCache::CloseWatcherHandles(const CTGitPath& path)
 577 {
 578         watcher.CloseHandlesForPath(path);
 579         m_folderCrawler.ReleasePathForUpdate(path);
 580         CGitStatusCache::Instance().m_GitStatus.ReleasePathsRecursively(path.GetWinPathString());
 581 }
 582
 583 CString CGitStatusCache::GetSpecialFolder(REFKNOWNFOLDERID rfid)
 584 {
 585         PWSTR pszPath = nullptr;
 586         if (SHGetKnownFolderPath(rfid, KF_FLAG_CREATE, nullptr, &pszPath) != S_OK)
 587                 return CString();
 588
 589         CString path = pszPath;
 590         CoTaskMemFree(pszPath);
 591         return path;
 592 }