#include <time.h>
#include <dirent.h>
+#define HEADER_READOK 0
+#define HEADER_READERR 1
+#define HEADER_READLAST 2
+
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;
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 configcache::readHeader()
{
- int headersize;
+ long unsigned int headersize;
- if( readDataToMem((char*)&headersize, sizeof(int)) == sizeof(int) && inFile.is_open() )
- {
- if( headerData != NULL ) delete headerData;
+ if( readDataToMem((char *)&headersize, sizeof(long unsigned int)) == sizeof(long unsigned int) && inFile.is_open() ) {
+ if ( headersize == 0 )
+ return HEADER_READLAST;
+
+ pair<unsigned long, void *> newHeader;
+
+ if( readDataToMem((char *)&newHeader.first, sizeof(unsigned long)) == sizeof(unsigned long) && inFile.is_open() ) {
+ newHeader.second = malloc(headersize);
- headerData = new char(headersize);
-
- if( readDataToMem(headerData, headersize) == headersize && inFile.is_open() ) {
- if(out) *out->log << "CCACHE: Read header information." << endl << flush;
+ if( readDataToMem((char *)newHeader.second, headersize) == headersize && inFile.is_open() ) {
+ headerStore.push_back(newHeader);
+ return HEADER_READOK;
}
else {
- if(out) *out->log << "CCACHE: Could not read header! Closing dat-file: " << openFileDesc.filename << endl << flush;
+ if(out) *out->log << "CCACHE: Could not read heade-data! Closing dat-file: " << openFileDesc.filename << endl << flush;
inFile.close();
+ return HEADER_READERR;
}
}
+ else {
+ if(out) *out->log << "CCACHE: Could not read headerid-hash! Closing dat-file: " << openFileDesc.filename << endl << flush;
+ inFile.close();
+ return HEADER_READERR;
+ }
+ }
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 HEADER_READERR;
+ }
+}
+
+bool configcache::readAllHeaders()
+{
+ int readHeaderStatus;
+
+ deleteHeaderStore();
+
+ do {
+ readHeaderStatus = readHeader();
}
+ while ( readHeaderStatus == HEADER_READOK );
+
+ if ( readHeaderStatus == HEADER_READLAST ) return true;
+ else if ( readHeaderStatus == HEADER_READERR ) return false;
}
-void *configcache::getHeader() {
- return headerData;
+void * configcache::getHeader(const string& headerid) {
+ for (vector< pair<unsigned long, void *> >::iterator headerStoreIt = headerStore.begin(); headerStoreIt != headerStore.end(); ++headerStoreIt)
+ if ( headerStoreIt->first == hash(headerid) )
+ return headerStoreIt->second;
+
+ return NULL;
}
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() )
{
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;
outBuffer->push(outFile);
}
-void configcache::writeHeader(char *header, const int& size) {
+void configcache::writeHeader(const string& headerid, char *header, long unsigned int size) {
+ unsigned long headeridhash;
+
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;
+
+ headeridhash = hash(headerid);
+
+ boost::iostreams::write(*outBuffer, (char*)&size, sizeof(long unsigned int));
+ boost::iostreams::write(*outBuffer, (char*)&headeridhash, sizeof(unsigned long));
+ boost::iostreams::write(*outBuffer, header, size);
}
void configcache::writeConfig()
{
- if( DATADIR == "" || MODE < 2 ) return;
+ long unsigned int zeroheader=0;
+
+ 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));
- }
+
+ boost::iostreams::write(*outBuffer, (char*)&zeroheader, sizeof(long unsigned int));
boost::iostreams::write(*outBuffer, configMem, configSize);
}
}
}
+int configcache::readFullBlock(char *tmpData, long unsigned int dataSize)
+{
+ /* try to read header */
+ if ( openFileDesc.extended )
+ if ( ! readAllHeaders() )
+ return -1;
+
+ /* read data */
+ return readDataToMem(tmpData, dataSize);
+}
+
int configcache::readDataToMem(char *tmpData, long unsigned int dataSize)
{
int readturn = -1;
return readturn;
}
+
+unsigned long configcache::hash(const string& str)
+{
+ unsigned long hash = 5381;
+
+ for(string::const_iterator it=str.begin();it!=str.end();it++)
+ hash = ((hash << 5) + hash) + *it; /* hash * 33 + character */
+
+ return hash;
+}
+
+void configcache::deleteHeaderStore()
+{
+ while ( headerStore.size() > 0 ) {
+ free(headerStore.back().second);
+ headerStore.pop_back();
+ }
+}
projects / phys / latlib.git / blobdiff