]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/pkgcache.h
Support for memory-only caching
[apt.git] / apt-pkg / pkgcache.h
index 9dd9869db87e494cffd273206b9fae7dc8bb84a0..10e68f20d8fd521e1167f89e98f3ef229e3cf78a 100644 (file)
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: pkgcache.h,v 1.8 1998/10/20 02:39:20 jgg Exp $
+// $Id: pkgcache.h,v 1.19 1999/04/12 04:21:20 jgg Exp $
 /* ######################################################################
    
    Cache - Structure definitions for the cache file
 #include <time.h>
 #include <apt-pkg/mmap.h>
 
+/* This should be a 32 bit type, larger tyes use too much ram and smaller
+   types are too small. Where ever possible 'unsigned long' should be used
+   instead of this internal type */
+typedef unsigned int __apt_ptrloc;
+
 class pkgCache
 {
    public:
@@ -66,7 +71,7 @@ class pkgCache
    
    struct State
    {
-      enum VerPriority {Important=1,Required=2,Standard=3,Optional=5,Extra=5};
+      enum VerPriority {Important=1,Required=2,Standard=3,Optional=4,Extra=5};
       enum PkgSelectedState {Unknown=0,Install=1,Hold=2,DeInstall=3,Purge=4};
       enum PkgInstState {Ok=0,ReInstReq=1,HoldInst=2,HoldReInstReq=3};
       enum PkgCurrentState {NotInstalled=0,UnPacked=1,HalfConfigured=2,
@@ -75,9 +80,8 @@ class pkgCache
    
    struct Flag
    {
-      enum PkgFlags {Auto=(1<<0),New=(1<<1),Obsolete=(1<<2),Essential=(1<<3),
-        ImmediateConf=(1<<4)};
-      enum PkgFFlags {NotSource=(1<<0)};
+      enum PkgFlags {Auto=(1<<0),Essential=(1<<3),Important=(1<<4)};
+      enum PkgFFlags {NotSource=(1<<0),NotAutomatic=(1<<1)};
    };
    
    protected:
@@ -86,8 +90,8 @@ class pkgCache
    string CacheFile;
    MMap &Map;
 
-   static unsigned long sHash(string S);
-   static unsigned long sHash(const char *S);
+   unsigned long sHash(string S) const;
+   unsigned long sHash(const char *S) const;
    
    public:
    
@@ -104,6 +108,7 @@ class pkgCache
 
    virtual bool ReMap();
    inline bool Sync() {return Map.Sync();};
+   inline MMap &GetMap() {return Map;};
    
    // String hashing function (512 range)
    inline unsigned long Hash(string S) const {return sHash(S);};
@@ -119,6 +124,7 @@ class pkgCache
    inline PkgIterator PkgEnd();
    inline PkgFileIterator FileBegin();
    inline PkgFileIterator FileEnd();
+   VerIterator GetCandidateVer(PkgIterator Pkg,bool AllowCurrent = true);
    
    pkgCache(MMap &Map);
    virtual ~pkgCache() {};
@@ -147,10 +153,12 @@ struct pkgCache::Header
    unsigned long VersionCount;
    unsigned long DependsCount;
    unsigned long PackageFileCount;
+   unsigned long VerFileCount;
+   unsigned long ProvidesCount;
    
    // Offsets
-   unsigned long FileList;              // struct PackageFile
-   unsigned long StringList;            // struct StringItem
+   __apt_ptrloc FileList;              // struct PackageFile
+   __apt_ptrloc StringList;            // struct StringItem
    unsigned long MaxVerFileSize;
 
    /* Allocation pools, there should be one of these for each structure
@@ -158,7 +166,7 @@ struct pkgCache::Header
    DynamicMMap::Pool Pools[7];
    
    // Rapid package name lookup
-   unsigned long HashTable[512];
+   __apt_ptrloc HashTable[2*1048];
 
    bool CheckSizes(Header &Against) const;
    Header();
@@ -167,17 +175,17 @@ struct pkgCache::Header
 struct pkgCache::Package
 {
    // Pointers
-   unsigned long Name;              // Stringtable
-   unsigned long VersionList;       // Version
-   unsigned long TargetVer;         // Version
-   unsigned long CurrentVer;        // Version
-   unsigned long TargetDist;        // StringTable (StringItem)
-   unsigned long Section;           // StringTable (StringItem)
+   __apt_ptrloc Name;              // Stringtable
+   __apt_ptrloc VersionList;       // Version
+   __apt_ptrloc TargetVer;         // Version
+   __apt_ptrloc CurrentVer;        // Version
+   __apt_ptrloc TargetDist;        // StringTable (StringItem)
+   __apt_ptrloc Section;           // StringTable (StringItem)
       
    // Linked list 
-   unsigned long NextPackage;       // Package
-   unsigned long RevDepends;        // Dependency
-   unsigned long ProvidesList;      // Provides
+   __apt_ptrloc NextPackage;       // Package
+   __apt_ptrloc RevDepends;        // Dependency
+   __apt_ptrloc ProvidesList;      // Provides
    
    // Install/Remove/Purge etc
    unsigned char SelectedState;     // What
@@ -191,51 +199,56 @@ struct pkgCache::Package
 struct pkgCache::PackageFile
 {
    // Names
-   unsigned long FileName;        // Stringtable
-   unsigned long Version;         // Stringtable
-   unsigned long Distribution;    // Stringtable
-   unsigned long Size;
+   __apt_ptrloc FileName;        // Stringtable
+   __apt_ptrloc Archive;         // Stringtable
+   __apt_ptrloc Component;       // Stringtable
+   __apt_ptrloc Version;         // Stringtable
+   __apt_ptrloc Origin;          // Stringtable
+   __apt_ptrloc Label;           // Stringtable
+   __apt_ptrloc Architecture;    // Stringtable
+   unsigned long Size;            
+   unsigned long Flags;
    
    // Linked list
-   unsigned long NextFile;        // PackageFile
+   __apt_ptrloc NextFile;        // PackageFile
    unsigned short ID;
-   unsigned long Flags;
    time_t mtime;                  // Modification time for the file
 };
 
 struct pkgCache::VerFile
 {
-   unsigned long File;           // PackageFile
-   unsigned long NextFile;       // PkgVerFile
-   unsigned long Offset;
+   __apt_ptrloc File;           // PackageFile
+   __apt_ptrloc NextFile;       // PkgVerFile
+   __apt_ptrloc Offset;         // File offset
    unsigned short Size;
 };
 
 struct pkgCache::Version
 {
-   unsigned long VerStr;            // Stringtable
-   unsigned long Section;           // StringTable (StringItem)
-   
+   __apt_ptrloc VerStr;            // Stringtable
+   __apt_ptrloc Section;           // StringTable (StringItem)
+   __apt_ptrloc Arch;              // StringTable
+      
    // Lists
-   unsigned long FileList;          // VerFile
-   unsigned long NextVer;           // Version
-   unsigned long DependsList;       // Dependency
-   unsigned long ParentPkg;         // Package
-   unsigned long ProvidesList;      // Provides
+   __apt_ptrloc FileList;          // VerFile
+   __apt_ptrloc NextVer;           // Version
+   __apt_ptrloc DependsList;       // Dependency
+   __apt_ptrloc ParentPkg;         // Package
+   __apt_ptrloc ProvidesList;      // Provides
    
-   unsigned long Size;
-   unsigned long InstalledSize;
+   __apt_ptrloc Size;              // These are the .deb size
+   __apt_ptrloc InstalledSize;
    unsigned short ID;
    unsigned char Priority;
 };
 
 struct pkgCache::Dependency
 {
-   unsigned long Version;         // Stringtable
-   unsigned long Package;         // Package
-   unsigned long NextDepends;     // Dependency
-   unsigned long NextRevDepends;  // Dependency
-   unsigned long ParentVer;       // Version
+   __apt_ptrloc Version;         // Stringtable
+   __apt_ptrloc Package;         // Package
+   __apt_ptrloc NextDepends;     // Dependency
+   __apt_ptrloc NextRevDepends;  // Dependency
+   __apt_ptrloc ParentVer;       // Version
    
    // Specific types of depends
    unsigned char Type;
@@ -245,17 +258,17 @@ struct pkgCache::Dependency
 
 struct pkgCache::Provides
 {
-   unsigned long ParentPkg;        // Pacakge
-   unsigned long Version;          // Version
-   unsigned long ProvideVersion;   // Stringtable
-   unsigned long NextProvides;     // Provides
-   unsigned long NextPkgProv;      // Provides
+   __apt_ptrloc ParentPkg;        // Pacakge
+   __apt_ptrloc Version;          // Version
+   __apt_ptrloc ProvideVersion;   // Stringtable
+   __apt_ptrloc NextProvides;     // Provides
+   __apt_ptrloc NextPkgProv;      // Provides
 };
 
 struct pkgCache::StringItem
 {
-   unsigned long String;        // Stringtable
-   unsigned long NextItem;      // StringItem
+   __apt_ptrloc String;        // Stringtable
+   __apt_ptrloc NextItem;      // StringItem
 };
 
 #include <apt-pkg/cacheiterators.h>