X-Git-Url: http://git.treefish.org/~alex/phys/latlib.git/blobdiff_plain/3bb55613d615dd93b662c4cd1a9c6198f7de53ff..a55a5830c5c98e950d58593697dd4ee5e4384716:/configcache.cpp

diff --git a/configcache.cpp b/configcache.cpp
index 1b22757..fcfdd8e 100644
--- a/configcache.cpp
+++ b/configcache.cpp
@@ -26,6 +26,8 @@ configcache::configcache(const string& cacheid, const int& nequi, const int& nsk
   MODE = cachemode;
 
   refetchDataFiles = false;
+
+  readHeaderData = NULL;
 }
 
 string configcache::getFileId(const bool& shortid)
@@ -109,53 +111,34 @@ bool configcache::isValidInFile(const string& infile, infiledesc *filedesc)
   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()
+bool configcache::readHeader()
 {
-  int headersize;
-  
-  if( readDataToMem((char*)&headersize, sizeof(int)) == sizeof(int) && inFile.is_open() )
+  long unsigned int headersize;
+
+  if( readDataToMem((char*)&headersize, sizeof(long unsigned int)) == sizeof(long unsigned int) && inFile.is_open() )
     {
-      if( headerData != NULL ) delete headerData;
+      if( readHeaderData != NULL ) free(readHeaderData);
 
-      headerData = new char(headersize);
-      
-      if( readDataToMem(headerData, headersize) == headersize && inFile.is_open() ) {
-	if(out) *out->log << "CCACHE: Read header information." << endl << flush;
+      readHeaderData = (char*) malloc(headersize);
+
+      if( readDataToMem(readHeaderData, headersize) == headersize && inFile.is_open() ) {
+	return true;
       }
       else {
 	if(out) *out->log << "CCACHE: Could not read header! Closing dat-file: " << openFileDesc.filename << endl << flush;
 	inFile.close();
+	return false;
       }
     }
   else {
-    if(out) *out->log << "CCACHE: Could not read header size! Closing dat-file: " << openFileDesc.filename << endl << flush;
+    if(out) *out->log << "CCACHE: Could not read header size. Closing dat-file: " << openFileDesc.filename << endl << flush;
     inFile.close();
+    return false;
   }
 }
 
 void *configcache::getHeader() {
-  return headerData;
+  return readHeaderData;
 }
 
 bool configcache::readConfig()
@@ -171,9 +154,19 @@ bool configcache::readConfig()
     {
       if( (!inFile.is_open()) && inFiles.size() == 0 ) return false;
 
-      /* read header information */
-      if ( openInFile() && openFileDesc.extended )
-	readHeader();
+      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);
+      }
 
       if( inFile.is_open() ) 
 	{
@@ -181,12 +174,12 @@ bool configcache::readConfig()
 	    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() )
+	      if( readFullBlock(tmpConfig, configSize) != configSize || ! inFile.is_open() )
 		break;
 	    }
 	  }
 
-	  if( readDataToMem(tmpConfig, configSize) == configSize && inFile.is_open() )
+	  if( readFullBlock(tmpConfig, configSize) == configSize && inFile.is_open() )
 	    {
 	      memcpy(configMem, tmpConfig, configSize);
 	      return true;
@@ -210,30 +203,36 @@ void configcache::openOutFile()
   outBuffer = new boost::iostreams::filtering_ostreambuf;
   outBuffer->push(boost::iostreams::bzip2_compressor());
   outBuffer->push(outFile);
+
+  headerWritten = false;
 }
 
-void configcache::writeHeader(char *header, const int& size) {
+void configcache::writeHeader(char *header, long unsigned int size) {
   if( DATADIR == "" || MODE < 2 ) return;
 
-  if(!outFile.is_open()) {
+  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;
+
+  boost::iostreams::write(*outBuffer, (char*)&size, sizeof(long unsigned int));
+  boost::iostreams::write(*outBuffer, header, size);
+
+  headerWritten = true;
 }
 
 void configcache::writeConfig()
 {
-  if( DATADIR == "" || MODE < 2 ) return;
+  if ( DATADIR == "" || MODE < 2 ) return;
 
-  if(!outFile.is_open()){
-    int zeroheader=0;
+  if ( ! outFile.is_open() )
     openOutFile();
-    boost::iostreams::write(*outBuffer, (char*)&zeroheader, sizeof(int));
+  
+  if ( ! headerWritten ) {
+    long unsigned int zeroheader=0;
+    boost::iostreams::write(*outBuffer, (char*)&zeroheader, sizeof(long unsigned int));
   }
 
   boost::iostreams::write(*outBuffer, configMem, configSize);
+  headerWritten = false;
 }
 
 void configcache::addPara(const string& parid, const double& val){
@@ -280,6 +279,17 @@ void configcache::finishOutFile()
     }
 }
 
+int configcache::readFullBlock(char *tmpData, long unsigned int dataSize)
+{
+  /* try to read header */
+  if ( openFileDesc.extended )
+    if ( ! readHeader() ) 
+      return -1;
+
+  /* read data */
+  return readDataToMem(tmpData, dataSize);
+}
+
 int configcache::readDataToMem(char *tmpData, long unsigned int dataSize)
 {
   int readturn = -1;