...

[phys/latlib.git] / configcache.cpp

diff --git a/configcache.cpp b/configcache.cpp
index 670f02a02b9d8619c46b389d3536a772d19fc8ff..1b227578bea85c73835bffce7c343674340d109c 100644 (file)
--- a/configcache.cpp
+++ b/configcache.cpp
@@ -5,7 +5,10 @@
 #include <time.h>
 #include <dirent.h>
 
 #include <time.h>
 #include <dirent.h>
 

-configcache::configcache(const string& cacheid, const int& nequi, const int& nskip, const string& datadir, char **configmem, const int& configMemSize){
+configcache::configcache(const string& cacheid, const int& nequi, const int& nskip, const string& datadir, char **configmem, const int& configMemSize, const int& cachemode,
+                        writeout *out_a){
+  out = out_a;
+

   NEQUI = nequi;
   NSKIP = nskip;
   DATADIR = datadir;
   NEQUI = nequi;
   NSKIP = nskip;
   DATADIR = datadir;


@@ -20,6 +23,8 @@ configcache::configcache(const string& cacheid, const int& nequi, const int& nsk
   outBuffer = NULL;
   inBuffer = NULL;
 
   outBuffer = NULL;
   inBuffer = NULL;
 

+  MODE = cachemode;
+

   refetchDataFiles = false;
 }
 
   refetchDataFiles = false;
 }
 


@@ -38,27 +43,36 @@ void configcache::fetchDataFiles()
 {
   struct dirent *de=NULL;
   DIR *d=NULL;
 {
   struct dirent *de=NULL;
   DIR *d=NULL;

+  static infiledesc filedesc;

   
   d=opendir(DATADIR.c_str());
   if(d != NULL){
     while(de = readdir(d)){
       string filename = de->d_name;
   
   d=opendir(DATADIR.c_str());
   if(d != NULL){
     while(de = readdir(d)){
       string filename = de->d_name;

-      if(isValidInFile(filename)) 
+      if(isValidInFile(filename, &filedesc)) 

        {
        {

-         inFiles.push_back(filename);
+         inFiles.push_back(filedesc);

        }
     }
   }
 }
 
        }
     }
   }
 }
 

-bool configcache::isValidInFile(const string& infile)
+bool configcache::isValidInFile(const string& infile, infiledesc *filedesc)

 {
   char *inchar, *inParts;
   string truncIn, truncOut;
 
 {
   char *inchar, *inParts;
   string truncIn, truncOut;
 

+  filedesc->filename = infile;
+  filedesc->doVirtualEquilibration = false;
+

   if( infile.size() < 4 ) return false;
 
   if( infile.size() < 4 ) return false;
 

-  if( infile.substr(infile.size()-3) != "dat" ) return false;
+  if( infile.substr(infile.size()-4) == ".dat" )
+    filedesc->extended = false;
+  else if( infile.substr(infile.size()-4) == "edat" )
+    filedesc->extended = true;
+  else
+    return false;

 
   inchar = new char [infile.size()+1];
   strcpy (inchar, infile.c_str());
 
   inchar = new char [infile.size()+1];
   strcpy (inchar, infile.c_str());


@@ -71,8 +85,18 @@ bool configcache::isValidInFile(const string& infile)
       switch(iPart)
        {
        case 1: if(inParts != CACHEID) return false; break;
       switch(iPart)
        {
        case 1: if(inParts != CACHEID) return false; break;

-       case 2: if(atoi(inParts) < NEQUI) return false; break;
-       case 3: if(atoi(inParts) < NSKIP) return false; break;
+       case 2: 
+         if (atoi(inParts) > NEQUI) 
+           return false; 
+         else if (atoi(inParts) < NEQUI)
+           filedesc->doVirtualEquilibration = true;
+         filedesc->nequi = atoi(inParts);
+         break;
+       case 3: 
+         if(atoi(inParts) != NSKIP) 
+           return false;
+         filedesc->nskip = atoi(inParts);
+         break;

        }
       inParts = strtok( NULL, "_");
     }
        }
       inParts = strtok( NULL, "_");
     }


@@ -80,14 +104,63 @@ bool configcache::isValidInFile(const string& infile)
 
   delete[] inchar;
 
 
   delete[] inchar;
 

-  if( truncIn.find( getFileId(true) ) == string::npos ) return false;
+  if( truncIn.find( getFileId(true) + "_" ) == string::npos ) return false;

 
   return true;
 }
 
 
   return true;
 }
 

+bool configcache::openInFile() {
+  while( (!inFile.is_open()) && inFiles.size() > 0 )
+    {
+      if(out) *out->log << "CCACHE: Opening dat-file: " << inFiles.back().filename << endl << flush;
+
+      openFileDesc = inFiles.back();
+      inFile.open( (DATADIR + "/" + inFiles.back().filename).c_str(), std::ios::binary );
+      inFiles.pop_back();
+
+      if( !inFile.is_open() ) continue;
+
+      inBuffer = new boost::iostreams::filtering_istreambuf;
+      inBuffer->push( boost::iostreams::bzip2_decompressor() );
+      inBuffer->push(inFile);
+
+      return true;
+    }
+
+  return false;
+}
+
+void configcache::readHeader()
+{
+  int headersize;
+  
+  if( readDataToMem((char*)&headersize, sizeof(int)) == sizeof(int) && inFile.is_open() )
+    {
+      if( headerData != NULL ) delete headerData;
+
+      headerData = new char(headersize);
+      
+      if( readDataToMem(headerData, headersize) == headersize && inFile.is_open() ) {
+       if(out) *out->log << "CCACHE: Read header information." << endl << flush;
+      }
+      else {
+       if(out) *out->log << "CCACHE: Could not read header! Closing dat-file: " << openFileDesc.filename << endl << flush;
+       inFile.close();
+      }
+    }
+  else {
+    if(out) *out->log << "CCACHE: Could not read header size! Closing dat-file: " << openFileDesc.filename << endl << flush;
+    inFile.close();
+  }
+}
+
+void *configcache::getHeader() {
+  return headerData;
+}
+

 bool configcache::readConfig()
 {
 bool configcache::readConfig()
 {

-  if(DATADIR == "") return false;
+  if(DATADIR == "" || MODE == CACHE_MODE_DISABLED) return false;

 
   if(refetchDataFiles){
     refetchDataFiles = false;
 
   if(refetchDataFiles){
     refetchDataFiles = false;


@@ -98,44 +171,66 @@ bool configcache::readConfig()
     {
       if( (!inFile.is_open()) && inFiles.size() == 0 ) return false;
 
     {
       if( (!inFile.is_open()) && inFiles.size() == 0 ) return false;
 

-      while( (!inFile.is_open()) && inFiles.size() > 0 )
-       {
-         inFile.open( (DATADIR + "/" + inFiles.back()).c_str(), std::ios::binary );
-         inFiles.pop_back();
-
-         if( !inFile.is_open() ) continue;
-
-         inBuffer = new boost::iostreams::filtering_istreambuf;
-         inBuffer->push( boost::iostreams::bzip2_decompressor() );
-         inBuffer->push(inFile);
-       }
+      /* read header information */
+      if ( openInFile() && openFileDesc.extended )
+       readHeader();

 
       if( inFile.is_open() ) 
        {
 
       if( inFile.is_open() ) 
        {

-         if( boost::iostreams::read(*inBuffer, tmpConfig, configSize) == configSize )
+         if (openFileDesc.doVirtualEquilibration) {
+           if(out) *out->log << "CCACHE: Trying virtual equilibration." << endl << flush;
+           openFileDesc.doVirtualEquilibration = false;
+           for (int iskip=0; iskip < (NEQUI-openFileDesc.nequi)/openFileDesc.nskip; iskip++) {
+             if( readDataToMem(tmpConfig, configSize) != configSize || ! inFile.is_open() )
+               break;
+           }
+         }
+
+         if( readDataToMem(tmpConfig, configSize) == configSize && inFile.is_open() )

            {
              memcpy(configMem, tmpConfig, configSize);
              return true;
            }
            {
              memcpy(configMem, tmpConfig, configSize);
              return true;
            }

-         else inFile.close();
+         else {
+           if(out) *out->log << "CCACHE: Could not read configuration. Closing dat-file: " << openFileDesc.filename << endl << flush;
+           inFile.close();
+         }

        }
     }
 }
 
        }
     }
 }
 

-void configcache::writeConfig()
+void configcache::openOutFile()

 {
 {

-  if( DATADIR == "") return;
+  time_t secstamp = time(NULL);

 
 

-  if(!outFile.is_open()){
-    time_t secstamp = time(NULL);
+  outFileName.str("");
+  outFileName << DATADIR << "/" << secstamp << "_" << getFileId() << "_.edat.tmp";    
+  outFile.open( outFileName.str().c_str(), std::ios::binary );
+
+  outBuffer = new boost::iostreams::filtering_ostreambuf;
+  outBuffer->push(boost::iostreams::bzip2_compressor());
+  outBuffer->push(outFile);
+}
+
+void configcache::writeHeader(char *header, const int& size) {
+  if( DATADIR == "" || MODE < 2 ) return;
+
+  if(!outFile.is_open()) {
+    openOutFile();
+    boost::iostreams::write(*outBuffer, header, size);
+  }
+  else
+    if(out) *out->log << "CCACHE: Not writing header because outfile is already open!" << endl << flush;
+}

 
 

-    outFileName.str("");
-    outFileName << DATADIR << "/" << secstamp << "_" << getFileId() << ".dat.tmp";    
-    outFile.open( outFileName.str().c_str(), std::ios::binary );
+void configcache::writeConfig()
+{
+  if( DATADIR == "" || MODE < 2 ) return;

 
 

-    outBuffer = new boost::iostreams::filtering_ostreambuf;
-    outBuffer->push(boost::iostreams::bzip2_compressor());
-    outBuffer->push(outFile);
+  if(!outFile.is_open()){
+    int zeroheader=0;
+    openOutFile();
+    boost::iostreams::write(*outBuffer, (char*)&zeroheader, sizeof(int));

   }
 
   boost::iostreams::write(*outBuffer, configMem, configSize);
   }
 
   boost::iostreams::write(*outBuffer, configMem, configSize);


@@ -184,3 +279,26 @@ void configcache::finishOutFile()
       rename( outFileName.str().c_str(), outFileName.str().substr(0, outFileName.str().size()-4).c_str() );
     }
 }
       rename( outFileName.str().c_str(), outFileName.str().substr(0, outFileName.str().size()-4).c_str() );
     }
 }

+
+int configcache::readDataToMem(char *tmpData, long unsigned int dataSize)
+{
+  int readturn = -1;
+
+  if ( dataSize == 0 ) return 0;
+
+  try { readturn = boost::iostreams::read(*inBuffer, tmpData, dataSize); }
+  catch(boost::iostreams::bzip2_error& error) { 
+    if(out) *out->log << "CCACHE: Caught bzip2 exception with error code: " << error.error() << endl << flush;
+    inFile.close();
+  } 
+  catch (std::exception const& ex) {
+    if(out) *out->log << "CCACHE: Caught exception: " << ex.what() << endl << flush;
+    inFile.close();
+  }
+  catch( ... ) {
+    if(out) *out->log << "CCACHE: Caught unknown exception while reading." << endl << flush;
+    inFile.close();
+  }
+
+  return readturn;
+}