Browse Source
Author: jgg Date: 1999-04-18 06:36:36 GMT Support for memory-only cachingdebian/1.8.y
Arch Librarian
18 years ago
9 changed files with 421 additions and 145 deletions
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// -*- mode: cpp; mode: fold -*-
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// Description /*{{{*/
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// $Id: cachefile.cc,v 1.1 1999/04/18 06:36:36 jgg Exp $
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/* ######################################################################
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CacheFile - Simple wrapper class for opening, generating and whatnot |
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This class implements a simple 2 line mechanism to open various sorts |
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of caches. It can operate as root, as not root, show progress and so on, |
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it transparently handles everything necessary. |
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##################################################################### */ |
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/*}}}*/ |
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// Include Files /*{{{*/
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#ifdef __GNUG__ |
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#pragma implementation "apt-pkg/cachefile.h" |
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#endif |
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#include <apt-pkg/cachefile.h> |
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#include <apt-pkg/error.h> |
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#include <apt-pkg/sourcelist.h> |
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#include <apt-pkg/pkgcachegen.h> |
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#include <apt-pkg/configuration.h> |
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/*}}}*/ |
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// CacheFile::CacheFile - Constructor /*{{{*/
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// ---------------------------------------------------------------------
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/* */ |
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pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), Lock() |
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{ |
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} |
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/*}}}*/ |
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// CacheFile::~CacheFile - Destructor /*{{{*/
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// ---------------------------------------------------------------------
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/* */ |
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pkgCacheFile::~pkgCacheFile() |
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{ |
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delete Cache; |
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delete Map; |
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delete Lock; |
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} |
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/*}}}*/ |
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// CacheFile::Open - Open the cache files, creating if necessary /*{{{*/
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// ---------------------------------------------------------------------
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/* */ |
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bool pkgCacheFile::Open(OpProgress &Progress,bool WithLock) |
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{ |
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if (WithLock == true) |
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Lock = new pkgDpkgLock; |
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if (_error->PendingError() == true) |
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return false; |
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// Read the source list
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pkgSourceList List; |
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if (List.ReadMainList() == false) |
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return _error->Error("The list of sources could not be read."); |
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/* Build all of the caches, using the cache files if we are locking
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(ie as root) */ |
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if (WithLock == true) |
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{ |
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pkgMakeStatusCache(List,Progress); |
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Progress.Done(); |
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if (_error->PendingError() == true) |
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return _error->Error("The package lists or status file could not be parsed or opened."); |
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if (_error->empty() == false) |
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_error->Warning("You may want to run apt-get update to correct theses missing files"); |
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// Open the cache file
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FileFd File(_config->FindFile("Dir::Cache::pkgcache"),FileFd::ReadOnly); |
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if (_error->PendingError() == true) |
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return false; |
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Map = new MMap(File,MMap::Public | MMap::ReadOnly); |
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if (_error->PendingError() == true) |
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return false; |
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} |
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else |
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{ |
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Map = pkgMakeStatusCacheMem(List,Progress); |
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Progress.Done(); |
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if (Map == 0) |
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return false; |
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} |
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// Create the dependency cache
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Cache = new pkgDepCache(*Map,Progress); |
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if (_error->PendingError() == true) |
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return false; |
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Progress.Done(); |
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return true; |
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} |
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/*}}}*/ |
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@ -0,0 +1,48 @@ |
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// -*- mode: cpp; mode: fold -*-
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// Description /*{{{*/
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// $Id: cachefile.h,v 1.1 1999/04/18 06:36:36 jgg Exp $
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/* ######################################################################
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|
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CacheFile - Simple wrapper class for opening, generating and whatnot |
|||
|
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This class implements a simple 2 line mechanism to open various sorts |
|||
of caches. It can operate as root, as not root, show progress and so on, |
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it transparently handles everything necessary. |
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##################################################################### */ |
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/*}}}*/ |
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#ifndef PKGLIB_CACHEFILE_H |
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#define PKGLIB_CACHEFILE_H |
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#ifdef __GNUG__ |
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#pragma interface "apt-pkg/cachefile.h" |
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#endif |
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#include <apt-pkg/depcache.h> |
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#include <apt-pkg/dpkginit.h> |
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class pkgCacheFile |
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{ |
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protected: |
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MMap *Map; |
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pkgDepCache *Cache; |
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pkgDpkgLock *Lock; |
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public: |
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// We look pretty much exactly like a pointer to a dep cache
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inline operator pkgDepCache &() {return *Cache;}; |
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inline pkgDepCache *operator ->() {return Cache;}; |
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inline pkgDepCache &operator *() {return *Cache;}; |
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// Release the dpkg status lock
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inline void ReleaseLock() {Lock->Close();}; |
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bool Open(OpProgress &Progress,bool WithLock = true); |
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pkgCacheFile(); |
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~pkgCacheFile(); |
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}; |
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#endif |
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