#include <iostream>
#include <time.h>
#include <dirent.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <boost/iostreams/filtering_streambuf.hpp>
+#include <boost/iostreams/stream.hpp>
+#include <boost/iostreams/filter/bzip2.hpp>
+#include <boost/iostreams/device/array.hpp>
+#include <boost/iostreams/copy.hpp>
#define HEADER_READOK 0
#define HEADER_READERR 1
#define HEADER_READLAST 2
+struct configcache::iobuffers
+{
+ boost::iostreams::filtering_istreambuf *in;
+ boost::iostreams::filtering_ostreambuf *out;
+};
+
configcache::configcache(const string& cacheid, const int& nequi, const int& nskip, const string& datadir, char **configmem, const int& configMemSize, const int& cachemode,
ostream *_log){
log = _log;
*configmem = configMem;
configSize = configMemSize;
- outBuffer = NULL;
- inBuffer = NULL;
+ ioBuffers = new iobuffers;
+ ioBuffers->in = NULL;
+ ioBuffers->out = NULL;
MODE = cachemode;
string truncIn, truncOut;
filedesc->filename = infile;
- filedesc->doVirtualEquilibration = false;
- filedesc->readEquilibratedConfigs = 0;
if( infile.size() < 4 ) return false;
return false;
break;
case 2:
- if (atoi(inParts) < NEQUI)
- filedesc->doVirtualEquilibration = true;
filedesc->nequi = atoi(inParts);
break;
case 3:
return NULL;
}
-/* returns number of equilibration-steps left with new read configuration
- or zero if no new configuration was read */
-void configcache::readConfig(bool& readnewconfig, int& nequileft, vector<unsigned long> *excludeFileHashes)
+void configcache::readConfig(bool *readnewconfig, int *nequileft, vector<unsigned long> *excludeFileHashes)
{
- readnewconfig = false;
- nequileft = NEQUI;
+ *readnewconfig = false;
- if(DATADIR == "" || MODE == CACHE_MODE_DISABLED) return;
+ if( DATADIR == "" || !(MODE==CACHE_MODE_RO||MODE==CACHE_MODE_RW) ) return;
if(refetchDataFiles){
refetchDataFiles = false;
while(true)
{
vector<infiledesc>::iterator inFileIt = getNextInfile(excludeFileHashes);
+ int iDidVirtualSkips;
- if( (!inFile.is_open()) && inFileIt == inFiles.end() ) return;
+ if( (!inFile.is_open()) && inFileIt == inFiles.end() ) {
+ if (*readnewconfig)
+ *nequileft = nequileft_internal;
+ return;
+ }
while( (!inFile.is_open()) && inFiles.size() > 0 ) {
openFileDesc = *inFileIt;
+ if (openFileDesc.nequi < NEQUI)
+ doVirtualEquilibration = true;
+ else
+ doVirtualEquilibration = false;
+
+ firstUsedConfig = true;
+
if(log) *log << "CCACHE: Opening dat-file: " << inFileIt->filename << endl << flush;
inFile.open( (DATADIR + "/" + inFileIt->filename).c_str(), std::ios::binary );
if( !inFile.is_open() ) continue;
- inBuffer = new boost::iostreams::filtering_istreambuf;
- inBuffer->push( boost::iostreams::bzip2_decompressor() );
- inBuffer->push(inFile);
+ ioBuffers->in = new boost::iostreams::filtering_istreambuf;
+ ioBuffers->in->push( boost::iostreams::bzip2_decompressor() );
+ ioBuffers->in->push(inFile);
}
if( inFile.is_open() )
{
- if (openFileDesc.doVirtualEquilibration) {
+ if (doVirtualEquilibration) {
if(log) *log << "CCACHE: Trying virtual equilibration." << endl << flush;
- openFileDesc.doVirtualEquilibration = false;
- for (int iskip=0; iskip < (NEQUI-openFileDesc.nequi)/openFileDesc.nskip; iskip++) {
+ doVirtualEquilibration = false;
+ for (iDidVirtualSkips=0; iDidVirtualSkips < (NEQUI-openFileDesc.nequi)/openFileDesc.nskip; iDidVirtualSkips++) {
if( readFullBlock(tmpConfig, configSize) != configSize || ! inFile.is_open() )
break;
- else if ( (NEQUI-openFileDesc.nequi) - (iskip+1)*openFileDesc.nskip < nequileft ) {
+ else if ( (NEQUI-openFileDesc.nequi) - (iDidVirtualSkips+1)*openFileDesc.nskip < nequileft_internal ) {
memcpy(configMem, tmpConfig, configSize);
- nequileft = (NEQUI-openFileDesc.nequi) - (iskip+1)*openFileDesc.nskip;
- readnewconfig = true;
+ nequileft_internal = NEQUI - openFileDesc.nequi - (iDidVirtualSkips+1)*openFileDesc.nskip;
+ *readnewconfig = true;
+ firstUsedConfig = false;
}
}
}
if( readFullBlock(tmpConfig, configSize) == configSize && inFile.is_open() )
{
memcpy(configMem, tmpConfig, configSize);
- readnewconfig = true;
- nequileft = NEQUI - openFileDesc.nequi - openFileDesc.readEquilibratedConfigs*openFileDesc.nskip;
- openFileDesc.readEquilibratedConfigs++;
+ *readnewconfig = true;
+ if (firstUsedConfig) {
+ firstUsedConfig = false;
+ if (openFileDesc.nequi < NEQUI)
+ nequileft_internal = NEQUI - openFileDesc.nequi - iDidVirtualSkips*openFileDesc.nskip;
+ else
+ nequileft_internal = NEQUI - openFileDesc.nequi;
+ }
+ nequileft_internal -= openFileDesc.nskip;
+ *nequileft = nequileft_internal;
return;
}
else {
}
void configcache::openOutFile(int actnequi)
-{
+{
time_t secstamp = time(NULL);
+ int iseq=0;
+
+ while (true) {
+ outFileName.str("");
+ outFileName << DATADIR << "/" << secstamp << "." << iseq << "_" << getFileId(actnequi) << "_.edat.tmp";
+
+ int tmpfd = open(outFileName.str().c_str(), O_CREAT | O_EXCL, 0644);
- outFileName.str("");
- outFileName << DATADIR << "/" << secstamp << "_" << getFileId(actnequi) << "_.edat.tmp";
+ if ( tmpfd != -1 ) {
+ close(tmpfd);
+ break;
+ }
+ else if ( errno != EEXIST ) {
+ if(log) *log << "CCACHE: Could not create cachefile!" << endl << flush;
+ exit(1);
+ }
+ iseq++;
+ }
+
outFile.open( outFileName.str().c_str(), std::ios::binary );
- outBuffer = new boost::iostreams::filtering_ostreambuf;
- outBuffer->push(boost::iostreams::bzip2_compressor());
- outBuffer->push(outFile);
+ ioBuffers->out = new boost::iostreams::filtering_ostreambuf;
+ ioBuffers->out->push(boost::iostreams::bzip2_compressor());
+ ioBuffers->out->push(outFile);
}
void configcache::writeHeader(const string& headerid, const char *header, long unsigned int size, int actnequi) {
unsigned long headeridhash;
- if( DATADIR == "" || MODE < 2 ) return;
+ if( DATADIR == "" || !(MODE==CACHE_MODE_WO||MODE==CACHE_MODE_RW) ) return;
if(!outFile.is_open())
openOutFile(actnequi);
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);
+ boost::iostreams::write(*ioBuffers->out, (char*)&size, sizeof(long unsigned int));
+ boost::iostreams::write(*ioBuffers->out, (char*)&headeridhash, sizeof(unsigned long));
+ boost::iostreams::write(*ioBuffers->out, header, size);
}
void configcache::writeConfig(int actnequi)
{
long unsigned int zeroheader=0;
- if ( DATADIR == "" || MODE < 2 ) return;
+ if ( DATADIR == "" || !(MODE==CACHE_MODE_WO||MODE==CACHE_MODE_RW) ) return;
if ( ! outFile.is_open() )
openOutFile(actnequi);
- boost::iostreams::write(*outBuffer, (char*)&zeroheader, sizeof(long unsigned int));
+ boost::iostreams::write(*ioBuffers->out, (char*)&zeroheader, sizeof(long unsigned int));
- boost::iostreams::write(*outBuffer, configMem, configSize);
+ boost::iostreams::write(*ioBuffers->out, configMem, configSize);
}
void configcache::addPara(const string& parid, const double& val){
void configcache::setPara(const string& parid, const double& value){
Paras[getParIndex(parid)].val = value;
+
finishOutFile();
- if(inBuffer != NULL) { delete inBuffer; inBuffer=NULL; }
+ if(ioBuffers->in != NULL) { delete ioBuffers->in; ioBuffers->in=NULL; }
inFile.close();
inFiles.clear();
refetchDataFiles = true;
+ nequileft_internal = NEQUI;
}
configcache::~configcache()
{
finishOutFile();
- delete inBuffer;
- inBuffer = NULL;
+ delete ioBuffers->in;
+ ioBuffers->in = NULL;
}
void configcache::finishOutFile()
{
- if( outBuffer != NULL )
+ if( ioBuffers->out != NULL )
{
- delete outBuffer;
- outBuffer = NULL;
+ delete ioBuffers->out;
+ ioBuffers->out = NULL;
}
if( outFile.is_open() )
if ( dataSize == 0 ) return 0;
- try { readturn = boost::iostreams::read(*inBuffer, tmpData, dataSize); }
+ try { readturn = boost::iostreams::read(*ioBuffers->in, tmpData, dataSize); }
catch(boost::iostreams::bzip2_error& error) {
if(log) *log << "CCACHE: Caught bzip2 exception with error code: " << error.error() << endl << flush;
inFile.close();
projects / phys / latlib.git / blobdiff