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[apt.git] / apt-pkg / acquire.cc

diff --git a/apt-pkg/acquire.cc b/apt-pkg/acquire.cc
index 125622e6679dbc3b2b625a59bc8e86985ad14a1d..1be8551f451fa9c911b29408ccca99ebc050d280 100644 (file)
--- a/apt-pkg/acquire.cc
+++ b/apt-pkg/acquire.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/

-// $Id: acquire.cc,v 1.24 1999/01/27 02:48:52 jgg Exp $
+// $Id: acquire.cc,v 1.47 2001/02/20 07:03:17 jgg Exp $

 /* ######################################################################
 
    Acquire - File Acquiration
 /* ######################################################################
 
    Acquire - File Acquiration


@@ -23,8 +23,12 @@
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 

+#include <apti18n.h>
+    

 #include <dirent.h>
 #include <sys/time.h>
 #include <dirent.h>
 #include <sys/time.h>

+#include <errno.h>
+#include <sys/stat.h>

                                                                        /*}}}*/
 
 // Acquire::pkgAcquire - Constructor                                   /*{{{*/
                                                                        /*}}}*/
 
 // Acquire::pkgAcquire - Constructor                                   /*{{{*/


@@ -45,6 +49,17 @@ pkgAcquire::pkgAcquire(pkgAcquireStatus *Log) : Log(Log)
       QueueMode = QueueAccess;   
 
    Debug = _config->FindB("Debug::pkgAcquire",false);
       QueueMode = QueueAccess;   
 
    Debug = _config->FindB("Debug::pkgAcquire",false);

+   
+   // This is really a stupid place for this
+   struct stat St;
+   if (stat((_config->FindDir("Dir::State::lists") + "partial/").c_str(),&St) != 0 ||
+       S_ISDIR(St.st_mode) == 0)
+      _error->Error(_("Lists directory %spartial is missing."),
+                   _config->FindDir("Dir::State::lists").c_str());
+   if (stat((_config->FindDir("Dir::Cache::Archives") + "partial/").c_str(),&St) != 0 ||
+       S_ISDIR(St.st_mode) == 0)
+      _error->Error(_("Archive directory %spartial is missing."),
+                   _config->FindDir("Dir::Cache::Archives").c_str());

 }
                                                                        /*}}}*/
 // Acquire::~pkgAcquire        - Destructor                                    /*{{{*/
 }
                                                                        /*}}}*/
 // Acquire::~pkgAcquire        - Destructor                                    /*{{{*/


@@ -52,15 +67,23 @@ pkgAcquire::pkgAcquire(pkgAcquireStatus *Log) : Log(Log)
 /* Free our memory, clean up the queues (destroy the workers) */
 pkgAcquire::~pkgAcquire()
 {
 /* Free our memory, clean up the queues (destroy the workers) */
 pkgAcquire::~pkgAcquire()
 {

-   while (Items.size() != 0)
-      delete Items[0];
-
+   Shutdown();
+   

    while (Configs != 0)
    {
       MethodConfig *Jnk = Configs;
       Configs = Configs->Next;
       delete Jnk;
    }   
    while (Configs != 0)
    {
       MethodConfig *Jnk = Configs;
       Configs = Configs->Next;
       delete Jnk;
    }   

+}
+                                                                       /*}}}*/
+// Acquire::Shutdown - Clean out the acquire object                    /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgAcquire::Shutdown()
+{
+   while (Items.size() != 0)
+      delete Items[0];

 
    while (Queues != 0)
    {
 
    while (Queues != 0)
    {


@@ -84,6 +107,8 @@ void pkgAcquire::Add(Item *Itm)
 /* Remove an item from the acquire list. This is usually not used.. */
 void pkgAcquire::Remove(Item *Itm)
 {
 /* Remove an item from the acquire list. This is usually not used.. */
 void pkgAcquire::Remove(Item *Itm)
 {

+   Dequeue(Itm);
+   

    for (vector<Item *>::iterator I = Items.begin(); I < Items.end(); I++)
    {
       if (*I == Itm)
    for (vector<Item *>::iterator I = Items.begin(); I < Items.end(); I++)
    {
       if (*I == Itm)


@@ -124,7 +149,7 @@ void pkgAcquire::Remove(Worker *Work)
 // Acquire::Enqueue - Queue an URI for fetching                                /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the entry point for an item. An item calls this function when
 // Acquire::Enqueue - Queue an URI for fetching                                /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the entry point for an item. An item calls this function when

-   it is construction which creates a queue (based on the current queue
+   it is constructed which creates a queue (based on the current queue

    mode) and puts the item in that queue. If the system is running then
    the queue might be started. */
 void pkgAcquire::Enqueue(ItemDesc &Item)
    mode) and puts the item in that queue. If the system is running then
    the queue might be started. */
 void pkgAcquire::Enqueue(ItemDesc &Item)


@@ -274,7 +299,7 @@ void pkgAcquire::RunFds(fd_set *RSet,fd_set *WSet)
 /* This runs the queues. It manages a select loop for all of the
    Worker tasks. The workers interact with the queues and items to
    manage the actual fetch. */
 /* This runs the queues. It manages a select loop for all of the
    Worker tasks. The workers interact with the queues and items to
    manage the actual fetch. */

-bool pkgAcquire::Run()
+pkgAcquire::RunResult pkgAcquire::Run()

 {
    Running = true;
    
 {
    Running = true;
    


@@ -284,6 +309,8 @@ bool pkgAcquire::Run()
    if (Log != 0)
       Log->Start();
    
    if (Log != 0)
       Log->Start();
    

+   bool WasCancelled = false;
+

    // Run till all things have been acquired
    struct timeval tv;
    tv.tv_sec = 0;
    // Run till all things have been acquired
    struct timeval tv;
    tv.tv_sec = 0;


@@ -297,7 +324,13 @@ bool pkgAcquire::Run()
       FD_ZERO(&WFds);
       SetFds(Highest,&RFds,&WFds);
       
       FD_ZERO(&WFds);
       SetFds(Highest,&RFds,&WFds);
       

-      int Res = select(Highest+1,&RFds,&WFds,0,&tv);
+      int Res;
+      do
+      {
+        Res = select(Highest+1,&RFds,&WFds,0,&tv);
+      }
+      while (Res < 0 && errno == EINTR);
+      

       if (Res < 0)
       {
         _error->Errno("select","Select has failed");
       if (Res < 0)
       {
         _error->Errno("select","Select has failed");


@@ -314,8 +347,11 @@ bool pkgAcquire::Run()
         tv.tv_usec = 500000;
         for (Worker *I = Workers; I != 0; I = I->NextAcquire)
            I->Pulse();
         tv.tv_usec = 500000;
         for (Worker *I = Workers; I != 0; I = I->NextAcquire)
            I->Pulse();

-        if (Log != 0)
-           Log->Pulse(this);
+        if (Log != 0 && Log->Pulse(this) == false)
+        {
+           WasCancelled = true;
+           break;
+        }

       }      
    }   
 
       }      
    }   
 


@@ -325,9 +361,17 @@ bool pkgAcquire::Run()
    // Shut down the acquire bits
    Running = false;
    for (Queue *I = Queues; I != 0; I = I->Next)
    // Shut down the acquire bits
    Running = false;
    for (Queue *I = Queues; I != 0; I = I->Next)

-      I->Shutdown();
+      I->Shutdown(false);

 
 

-   return !_error->PendingError();
+   // Shut down the items
+   for (Item **I = Items.begin(); I != Items.end(); I++)
+      (*I)->Finished(); 
+   
+   if (_error->PendingError())
+      return Failed;
+   if (WasCancelled)
+      return Cancelled;
+   return Continue;

 }
                                                                        /*}}}*/
 // Acquire::Bump - Called when an item is dequeued                     /*{{{*/
 }
                                                                        /*}}}*/
 // Acquire::Bump - Called when an item is dequeued                     /*{{{*/


@@ -356,13 +400,13 @@ bool pkgAcquire::Clean(string Dir)
 {
    DIR *D = opendir(Dir.c_str());   
    if (D == 0)
 {
    DIR *D = opendir(Dir.c_str());   
    if (D == 0)

-      return _error->Errno("opendir","Unable to read %s",Dir.c_str());
+      return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str());

    
    string StartDir = SafeGetCWD();
    if (chdir(Dir.c_str()) != 0)
    {
       closedir(D);
    
    string StartDir = SafeGetCWD();
    if (chdir(Dir.c_str()) != 0)
    {
       closedir(D);

-      return _error->Errno("chdir","Unable to change to ",Dir.c_str());
+      return _error->Errno("chdir",_("Unable to change to %s"),Dir.c_str());

    }
    
    for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D))
    }
    
    for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D))


@@ -393,9 +437,9 @@ bool pkgAcquire::Clean(string Dir)
 // Acquire::TotalNeeded - Number of bytes to fetch                     /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the total number of bytes needed */
 // Acquire::TotalNeeded - Number of bytes to fetch                     /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the total number of bytes needed */

-unsigned long pkgAcquire::TotalNeeded()
+double pkgAcquire::TotalNeeded()

 {
 {

-   unsigned long Total = 0;
+   double Total = 0;

    for (pkgAcquire::Item **I = ItemsBegin(); I != ItemsEnd(); I++)
       Total += (*I)->FileSize;
    return Total;
    for (pkgAcquire::Item **I = ItemsBegin(); I != ItemsEnd(); I++)
       Total += (*I)->FileSize;
    return Total;


@@ -404,15 +448,43 @@ unsigned long pkgAcquire::TotalNeeded()
 // Acquire::FetchNeeded - Number of bytes needed to get                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the number of bytes that is not local */
 // Acquire::FetchNeeded - Number of bytes needed to get                        /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the number of bytes that is not local */

-unsigned long pkgAcquire::FetchNeeded()
+double pkgAcquire::FetchNeeded()

 {
 {

-   unsigned long Total = 0;
+   double Total = 0;

    for (pkgAcquire::Item **I = ItemsBegin(); I != ItemsEnd(); I++)
       if ((*I)->Local == false)
         Total += (*I)->FileSize;
    return Total;
 }
                                                                        /*}}}*/
    for (pkgAcquire::Item **I = ItemsBegin(); I != ItemsEnd(); I++)
       if ((*I)->Local == false)
         Total += (*I)->FileSize;
    return Total;
 }
                                                                        /*}}}*/

+// Acquire::PartialPresent - Number of partial bytes we already have   /*{{{*/
+// ---------------------------------------------------------------------
+/* This is the number of bytes that is not local */
+double pkgAcquire::PartialPresent()
+{
+  double Total = 0;
+   for (pkgAcquire::Item **I = ItemsBegin(); I != ItemsEnd(); I++)
+      if ((*I)->Local == false)
+        Total += (*I)->PartialSize;
+   return Total;
+}
+                                                                       /*}}}*/
+// Acquire::UriBegin - Start iterator for the uri list                 /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgAcquire::UriIterator pkgAcquire::UriBegin()
+{
+   return UriIterator(Queues);
+}
+                                                                       /*}}}*/
+// Acquire::UriEnd - End iterator for the uri list                     /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgAcquire::UriIterator pkgAcquire::UriEnd()
+{
+   return UriIterator(0);
+}
+                                                                       /*}}}*/

 
 // Acquire::MethodConfig::MethodConfig - Constructor                   /*{{{*/
 // ---------------------------------------------------------------------
 
 // Acquire::MethodConfig::MethodConfig - Constructor                   /*{{{*/
 // ---------------------------------------------------------------------


@@ -423,6 +495,7 @@ pkgAcquire::MethodConfig::MethodConfig()
    Pipeline = false;
    SendConfig = false;
    LocalOnly = false;
    Pipeline = false;
    SendConfig = false;
    LocalOnly = false;

+   Removable = false;

    Next = 0;
 }
                                                                        /*}}}*/
    Next = 0;
 }
                                                                        /*}}}*/


@@ -445,7 +518,7 @@ pkgAcquire::Queue::Queue(string Name,pkgAcquire *Owner) : Name(Name),
 /* */
 pkgAcquire::Queue::~Queue()
 {
 /* */
 pkgAcquire::Queue::~Queue()
 {

-   Shutdown();
+   Shutdown(true);

    
    while (Items != 0)
    {
    
    while (Items != 0)
    {


@@ -504,50 +577,59 @@ bool pkgAcquire::Queue::Dequeue(Item *Owner)
                                                                        /*}}}*/
 // Queue::Startup - Start the worker processes                         /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // Queue::Startup - Start the worker processes                         /*{{{*/
 // ---------------------------------------------------------------------

-/* */
+/* It is possible for this to be called with a pre-existing set of
+   workers. */

 bool pkgAcquire::Queue::Startup()
 {
 bool pkgAcquire::Queue::Startup()
 {

-   Shutdown();
-   
-   URI U(Name);
-   pkgAcquire::MethodConfig *Cnf = Owner->GetConfig(U.Access);
-   if (Cnf == 0)
-      return false;
-   
-   Workers = new Worker(this,Cnf,Owner->Log);
-   Owner->Add(Workers);
-   if (Workers->Start() == false)
-      return false;
-   
-   /* When pipelining we commit 10 items. This needs to change when we
-      added other source retry to have cycle maintain a pipeline depth
-      on its own. */
-   if (Cnf->Pipeline == true)
-      MaxPipeDepth = 10;
-   else
-      MaxPipeDepth = 1;
+   if (Workers == 0)
+   {
+      URI U(Name);
+      pkgAcquire::MethodConfig *Cnf = Owner->GetConfig(U.Access);
+      if (Cnf == 0)
+        return false;
+      
+      Workers = new Worker(this,Cnf,Owner->Log);
+      Owner->Add(Workers);
+      if (Workers->Start() == false)
+        return false;
+      
+      /* When pipelining we commit 10 items. This needs to change when we
+         added other source retry to have cycle maintain a pipeline depth
+         on its own. */
+      if (Cnf->Pipeline == true)
+        MaxPipeDepth = 10;
+      else
+        MaxPipeDepth = 1;
+   }

    
    return Cycle();
 }
                                                                        /*}}}*/
 // Queue::Shutdown - Shutdown the worker processes                     /*{{{*/
 // ---------------------------------------------------------------------
    
    return Cycle();
 }
                                                                        /*}}}*/
 // Queue::Shutdown - Shutdown the worker processes                     /*{{{*/
 // ---------------------------------------------------------------------

-/* */
-bool pkgAcquire::Queue::Shutdown()
+/* If final is true then all workers are eliminated, otherwise only workers
+   that do not need cleanup are removed */
+bool pkgAcquire::Queue::Shutdown(bool Final)

 {
    // Delete all of the workers
 {
    // Delete all of the workers

-   while (Workers != 0)
+   pkgAcquire::Worker **Cur = &Workers;
+   while (*Cur != 0)

    {
    {

-      pkgAcquire::Worker *Jnk = Workers;
-      Workers = Workers->NextQueue;
-      Owner->Remove(Jnk);
-      delete Jnk;
+      pkgAcquire::Worker *Jnk = *Cur;
+      if (Final == true || Jnk->GetConf()->NeedsCleanup == false)
+      {
+        *Cur = Jnk->NextQueue;
+        Owner->Remove(Jnk);
+        delete Jnk;
+      }
+      else
+        Cur = &(*Cur)->NextQueue;      

    }
    
    return true;
 }
                                                                        /*}}}*/
    }
    
    return true;
 }
                                                                        /*}}}*/

-// Queue::Finditem - Find a URI in the item list                       /*{{{*/
+// Queue::FindItem - Find a URI in the item list                       /*{{{*/

 // ---------------------------------------------------------------------
 /* */
 pkgAcquire::Queue::QItem *pkgAcquire::Queue::FindItem(string URI,pkgAcquire::Worker *Owner)
 // ---------------------------------------------------------------------
 /* */
 pkgAcquire::Queue::QItem *pkgAcquire::Queue::FindItem(string URI,pkgAcquire::Worker *Owner)


@@ -626,7 +708,7 @@ void pkgAcquire::Queue::Bump()
 // AcquireStatus::pkgAcquireStatus - Constructor                       /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // AcquireStatus::pkgAcquireStatus - Constructor                       /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-pkgAcquireStatus::pkgAcquireStatus()
+pkgAcquireStatus::pkgAcquireStatus() : Update(true), MorePulses(false)

 {
    Start();
 }
 {
    Start();
 }


@@ -636,7 +718,7 @@ pkgAcquireStatus::pkgAcquireStatus()
 /* This computes some internal state variables for the derived classes to
    use. It generates the current downloaded bytes and total bytes to download
    as well as the current CPS estimate. */
 /* This computes some internal state variables for the derived classes to
    use. It generates the current downloaded bytes and total bytes to download
    as well as the current CPS estimate. */

-void pkgAcquireStatus::Pulse(pkgAcquire *Owner)
+bool pkgAcquireStatus::Pulse(pkgAcquire *Owner)

 {
    TotalBytes = 0;
    CurrentBytes = 0;
 {
    TotalBytes = 0;
    CurrentBytes = 0;


@@ -656,7 +738,7 @@ void pkgAcquireStatus::Pulse(pkgAcquire *Owner)
       // Totally ignore local items
       if ((*I)->Local == true)
         continue;
       // Totally ignore local items
       if ((*I)->Local == true)
         continue;

-      
+

       TotalBytes += (*I)->FileSize;
       if ((*I)->Complete == true)
         CurrentBytes += (*I)->FileSize;
       TotalBytes += (*I)->FileSize;
       if ((*I)->Complete == true)
         CurrentBytes += (*I)->FileSize;


@@ -665,18 +747,29 @@ void pkgAcquireStatus::Pulse(pkgAcquire *Owner)
    }
    
    // Compute the current completion
    }
    
    // Compute the current completion

+   unsigned long ResumeSize = 0;

    for (pkgAcquire::Worker *I = Owner->WorkersBegin(); I != 0;
        I = Owner->WorkerStep(I))
       if (I->CurrentItem != 0 && I->CurrentItem->Owner->Complete == false)
    for (pkgAcquire::Worker *I = Owner->WorkersBegin(); I != 0;
        I = Owner->WorkerStep(I))
       if (I->CurrentItem != 0 && I->CurrentItem->Owner->Complete == false)

+      {

         CurrentBytes += I->CurrentSize;
         CurrentBytes += I->CurrentSize;

-      
+        ResumeSize += I->ResumePoint;
+        
+        // Files with unknown size always have 100% completion
+        if (I->CurrentItem->Owner->FileSize == 0 && 
+            I->CurrentItem->Owner->Complete == false)
+           TotalBytes += I->CurrentSize;
+      }
+   

    // Normalize the figures and account for unknown size downloads
    if (TotalBytes <= 0)
       TotalBytes = 1;
    if (Unknown == Count)
       TotalBytes = Unknown;
    // Normalize the figures and account for unknown size downloads
    if (TotalBytes <= 0)
       TotalBytes = 1;
    if (Unknown == Count)
       TotalBytes = Unknown;

-   else
-      TotalBytes += TotalBytes/(Count - Unknown)*Unknown;
+
+   // Wha?! Is not supposed to happen.
+   if (CurrentBytes > TotalBytes)
+      CurrentBytes = TotalBytes;

    
    // Compute the CPS
    struct timeval NewTime;
    
    // Compute the CPS
    struct timeval NewTime;


@@ -684,26 +777,20 @@ void pkgAcquireStatus::Pulse(pkgAcquire *Owner)
    if (NewTime.tv_sec - Time.tv_sec == 6 && NewTime.tv_usec > Time.tv_usec ||
        NewTime.tv_sec - Time.tv_sec > 6)
    {    
    if (NewTime.tv_sec - Time.tv_sec == 6 && NewTime.tv_usec > Time.tv_usec ||
        NewTime.tv_sec - Time.tv_sec > 6)
    {    

-      // Compute the delta time with full accuracy
-      long usdiff = NewTime.tv_usec - Time.tv_usec;
-      long sdiff = NewTime.tv_sec - Time.tv_sec;
+      double Delta = NewTime.tv_sec - Time.tv_sec + 
+                    (NewTime.tv_usec - Time.tv_usec)/1000000.0;

       
       

-      // Borrow
-      if (usdiff < 0)
-      {         
-        usdiff += 1000000;
-        sdiff--;
-      }
-            

       // Compute the CPS value
       // Compute the CPS value

-      if (sdiff == 0 && usdiff == 0)
+      if (Delta < 0.01)

         CurrentCPS = 0;
       else
         CurrentCPS = 0;
       else

-        CurrentCPS = (CurrentBytes - LastBytes)/(sdiff + usdiff/1000000.0);
-      LastBytes = CurrentBytes;
-      ElapsedTime = NewTime.tv_sec - StartTime.tv_sec;
+        CurrentCPS = ((CurrentBytes - ResumeSize) - LastBytes)/Delta;
+      LastBytes = CurrentBytes - ResumeSize;
+      ElapsedTime = (unsigned long)Delta;

       Time = NewTime;
    }
       Time = NewTime;
    }

+
+   return true;

 }
                                                                        /*}}}*/
 // AcquireStatus::Start - Called when the download is started          /*{{{*/
 }
                                                                        /*}}}*/
 // AcquireStatus::Start - Called when the download is started          /*{{{*/


@@ -732,24 +819,16 @@ void pkgAcquireStatus::Stop()
    struct timeval NewTime;
    gettimeofday(&NewTime,0);
    
    struct timeval NewTime;
    gettimeofday(&NewTime,0);
    

-   // Compute the delta time with full accuracy
-   long usdiff = NewTime.tv_usec - StartTime.tv_usec;
-   long sdiff = NewTime.tv_sec - StartTime.tv_sec;
+   double Delta = NewTime.tv_sec - StartTime.tv_sec + 
+                  (NewTime.tv_usec - StartTime.tv_usec)/1000000.0;

    
    

-   // Borrow
-   if (usdiff < 0)
-   {    
-      usdiff += 1000000;
-      sdiff--;
-   }
-

    // Compute the CPS value
    // Compute the CPS value

-   if (sdiff == 0 && usdiff == 0)
+   if (Delta < 0.01)

       CurrentCPS = 0;
    else
       CurrentCPS = 0;
    else

-      CurrentCPS = FetchedBytes/(sdiff + usdiff/1000000.0);
+      CurrentCPS = FetchedBytes/Delta;

    LastBytes = CurrentBytes;
    LastBytes = CurrentBytes;

-   ElapsedTime = sdiff;
+   ElapsedTime = (unsigned int)Delta;

 }
                                                                        /*}}}*/
 // AcquireStatus::Fetched - Called when a byte set has been fetched    /*{{{*/
 }
                                                                        /*}}}*/
 // AcquireStatus::Fetched - Called when a byte set has been fetched    /*{{{*/