apt-pkg/acquire-worker.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: acquire-worker.h,v 1.4 1998/10/24 04:57:59 jgg Exp $
   4 /* ######################################################################
   5
   6    Acquire Worker - Worker process manager
   7
   8    Each worker class is associated with exaclty one subprocess.
   9
  10    ##################################################################### */
  11                                                                         /*}}}*/
  12 #ifndef PKGLIB_ACQUIRE_WORKER_H
  13 #define PKGLIB_ACQUIRE_WORKER_H
  14
  15 #include <apt-pkg/acquire.h>
  16
  17 #ifdef __GNUG__
  18 #pragma interface "apt-pkg/acquire-worker.h"
  19 #endif
  20
  21 // Interfacing to the method process
  22 class pkgAcquire::Worker
  23 {
  24    friend pkgAcquire;
  25
  26    protected:
  27    friend Queue;
  28
  29    /* Linked list starting at a Queue and a linked list starting
  30       at Acquire */
  31    Worker *NextQueue;
  32    Worker *NextAcquire;
  33
  34    // The access association
  35    Queue *OwnerQ;
  36    MethodConfig *Config;
  37    string Access;
  38
  39    // This is the subprocess IPC setup
  40    pid_t Process;
  41    int InFd;
  42    int OutFd;
  43    bool InReady;
  44    bool OutReady;
  45
  46    // Various internal things
  47    bool Debug;
  48    vector<string> MessageQueue;
  49    string OutQueue;
  50
  51    // Private constructor helper
  52    void Construct();
  53
  54    // Message handling things
  55    bool ReadMessages();
  56    bool RunMessages();
  57    bool InFdReady();
  58    bool OutFdReady();
  59
  60    // The message handlers
  61    bool Capabilities(string Message);
  62    bool SendConfiguration();
  63
  64    bool MethodFailure();
  65
  66    public:
  67
  68    // The curent method state
  69    pkgAcquire::Queue::QItem *CurrentItem;
  70    string Status;
  71    unsigned long CurrentSize;
  72    unsigned long TotalSize;
  73
  74    // Load the method and do the startup
  75    bool QueueItem(pkgAcquire::Queue::QItem *Item);
  76    bool Start();
  77
  78    Worker(Queue *OwnerQ,MethodConfig *Config);
  79    Worker(MethodConfig *Config);
  80    ~Worker();
  81 };
  82
  83 #endif