X-Git-Url: http://git.treefish.org/~alex/phys/latlib.git/blobdiff_plain/d52c5bf5d9fcc8c3decb9af47428cbab7ef18052..c819c7a5996c18a6b1c5501c1984245840ddc8ca:/configcache.cpp diff --git a/configcache.cpp b/configcache.cpp index 3a76a55..8687123 100644 --- a/configcache.cpp +++ b/configcache.cpp @@ -4,37 +4,74 @@ #include #include #include +#include +#include +#include + +#include +#include +#include +#include +#include + +#define HEADER_READOK 0 +#define HEADER_READERR 1 +#define HEADER_READLAST 2 + +struct configcache::iobuffers +{ + 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, - writeout *out_a){ - out = out_a; + ostream *_log){ + log = _log; + dataReader = new datread(configMemSize, log); + NEQUI = nequi; NSKIP = nskip; DATADIR = datadir; CACHEID = cacheid; + if ( cacheid.find("_") != -1 ) { + if(log) *log << "CCACHE: Invalid cacheid \"" << cacheid << "\" given. Cacheids must not contain underscores!" << endl << flush; + exit(1); + } + configMem = (char*)malloc(configMemSize); tmpConfig = (char*)malloc(configMemSize); *configmem = configMem; configSize = configMemSize; - outBuffer = NULL; - inBuffer = NULL; + ioBuffers = new iobuffers; + ioBuffers->out = NULL; MODE = cachemode; refetchDataFiles = false; } -string configcache::getFileId(const bool& shortid) +string configcache::paraString() { + stringstream parastring; + + for(int ipara=0; iparad_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; + filedesc->filename = infile; + 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; + filedesc->superextended = false; + } + else if( infile.substr(infile.size()-4) == "edat" ) { + filedesc->extended = true; + filedesc->superextended = false; + } + else if( infile.substr(infile.size()-4) == "sdat" ) { + filedesc->extended = true; + filedesc->superextended = true; + } + else + return false; inchar = new char [infile.size()+1]; strcpy (inchar, infile.c_str()); - + inParts = strtok( inchar, "_" ); for(int iPart=0; inParts!=NULL; iPart++) { @@ -75,9 +128,17 @@ bool configcache::isValidInFile(const string& infile) 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 1: if(inParts != CACHEID) + return false; + break; + case 2: + filedesc->nequi = atoi(inParts); + break; + case 3: + if(atoi(inParts) != NSKIP) + return false; + filedesc->nskip = atoi(inParts); + break; } inParts = strtok( NULL, "_"); } @@ -85,14 +146,20 @@ bool configcache::isValidInFile(const string& infile) delete[] inchar; - if( truncIn.find( getFileId(true) + "_" ) == string::npos ) return false; + if( truncIn.find( getFileId(NEQUI, filedesc->superextended, true) + "_" ) == string::npos ) return false; return true; } -bool configcache::readConfig() +void * configcache::getHeader(const string& headerid) { + return dataReader->getHeader(headerid); +} + +void configcache::readConfig(bool *readnewconfig, int *nequileft, vector *excludeFileHashes) { - if(DATADIR == "" || MODE == CACHE_MODE_DISABLED) return false; + *readnewconfig = false; + + if( DATADIR == "" || !(MODE==CACHE_MODE_RO||MODE==CACHE_MODE_RW) ) return; if(refetchDataFiles){ refetchDataFiles = false; @@ -101,70 +168,138 @@ bool configcache::readConfig() while(true) { - if( (!inFile.is_open()) && inFiles.size() == 0 ) return false; + vector::iterator inFileIt = getNextInfile(excludeFileHashes); + int iDidVirtualSkips; - while( (!inFile.is_open()) && inFiles.size() > 0 ) - { - if(out) *out->log << "CCACHE: Opening dat-file: " << inFiles.back() << endl << flush; + if( (!dataReader->fisopen()) && inFileIt == inFiles.end() ) { + if (*readnewconfig) + *nequileft = nequileft_internal; + return; + } + + while( (!dataReader->fisopen()) && inFiles.size() > 0 ) { + string inFileParaString; + + openFileDesc = *inFileIt; - openFileName = inFiles.back(); - inFile.open( (DATADIR + "/" + inFiles.back()).c_str(), std::ios::binary ); - inFiles.pop_back(); + if (openFileDesc.nequi < NEQUI) + doVirtualEquilibration = true; + else + doVirtualEquilibration = false; - if( !inFile.is_open() ) continue; + firstUsedConfig = true; - inBuffer = new boost::iostreams::filtering_istreambuf; - inBuffer->push( boost::iostreams::bzip2_decompressor() ); - inBuffer->push(inFile); + if(log) *log << "CCACHE: Opening dat-file: " << inFileIt->filename << endl << flush; + + dataReader->openFile( DATADIR + "/" + inFileIt->filename ); + + if( openFileDesc.superextended ) { + if( dataReader->getParaString() != paraString() ) { + if(log) *log << "CCACHE: Parastring does not match. Closing dat-file..." << endl << flush; + dataReader->closeFile(); + } } - if( inFile.is_open() ) + inFiles.erase(inFileIt); + + if( !dataReader->fisopen() ) continue; + } + + if( dataReader->fisopen() ) { - int readturn = -1; - try { readturn = boost::iostreams::read(*inBuffer, tmpConfig, configSize); } - 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(); + if (doVirtualEquilibration) { + if(log) *log << "CCACHE: Trying virtual equilibration." << endl << flush; + doVirtualEquilibration = false; + for (iDidVirtualSkips=0; iDidVirtualSkips < (NEQUI-openFileDesc.nequi)/openFileDesc.nskip; iDidVirtualSkips++) { + if( dataReader->readFullBlock(tmpConfig) < 0 ) + break; + else if ( (NEQUI-openFileDesc.nequi) - (iDidVirtualSkips+1)*openFileDesc.nskip < nequileft_internal ) { + memcpy(configMem, tmpConfig, configSize); + nequileft_internal = NEQUI - openFileDesc.nequi - (iDidVirtualSkips+1)*openFileDesc.nskip; + *readnewconfig = true; + firstUsedConfig = false; + } + } } - - if( readturn == configSize && inFile.is_open() ) + + if( dataReader->readFullBlock(tmpConfig) >= 0 ) { memcpy(configMem, tmpConfig, configSize); - return true; + *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 { - *out->log << "CCACHE: Closing dat-file: " << openFileName << endl << flush; - inFile.close(); - } } } } -void configcache::writeConfig() -{ - if( DATADIR == "" || MODE < 2 ) return; +void configcache::openOutFile(int actnequi) +{ + time_t secstamp = time(NULL); + int iseq=0; + + while (true) { + outFileName.str(""); + outFileName << DATADIR << "/" << secstamp << "." << iseq << "_" << getFileId(actnequi, true, false) << "_.sdat.tmp"; - if(!outFile.is_open()){ - time_t secstamp = time(NULL); + int tmpfd = open(outFileName.str().c_str(), O_CREAT | O_EXCL, 0644); - outFileName.str(""); - outFileName << DATADIR << "/" << secstamp << "_" << getFileId() << "_.dat.tmp"; - outFile.open( outFileName.str().c_str(), std::ios::binary ); + if ( tmpfd != -1 ) { + close(tmpfd); + break; + } + else if ( errno != EEXIST ) { + if(log) *log << "CCACHE: Could not create cachefile!" << endl << flush; + exit(1); + } - outBuffer = new boost::iostreams::filtering_ostreambuf; - outBuffer->push(boost::iostreams::bzip2_compressor()); - outBuffer->push(outFile); + iseq++; } + + outFile.open( outFileName.str().c_str(), std::ios::binary ); + + outFile << paraString() << endl; - boost::iostreams::write(*outBuffer, configMem, configSize); + 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==CACHE_MODE_WO||MODE==CACHE_MODE_RW) ) return; + + if(!outFile.is_open()) + openOutFile(actnequi); + + headeridhash = hash(headerid); + + 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==CACHE_MODE_WO||MODE==CACHE_MODE_RW) ) return; + + if ( ! outFile.is_open() ) + openOutFile(actnequi); + + boost::iostreams::write(*ioBuffers->out, (char*)&zeroheader, sizeof(long unsigned int)); + + boost::iostreams::write(*ioBuffers->out, configMem, configSize); } void configcache::addPara(const string& parid, const double& val){ @@ -181,27 +316,27 @@ int configcache::getParIndex(const string& parid){ void configcache::setPara(const string& parid, const double& value){ Paras[getParIndex(parid)].val = value; + finishOutFile(); - if(inBuffer != NULL) { delete inBuffer; inBuffer=NULL; } - inFile.close(); + dataReader->closeFile(); inFiles.clear(); refetchDataFiles = true; + nequileft_internal = NEQUI; } configcache::~configcache() { finishOutFile(); - delete inBuffer; - inBuffer = NULL; + delete dataReader; } void configcache::finishOutFile() { - if( outBuffer != NULL ) + if( ioBuffers->out != NULL ) { - delete outBuffer; - outBuffer = NULL; + delete ioBuffers->out; + ioBuffers->out = NULL; } if( outFile.is_open() ) @@ -210,3 +345,32 @@ void configcache::finishOutFile() rename( outFileName.str().c_str(), outFileName.str().substr(0, outFileName.str().size()-4).c_str() ); } } + +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; +} + +vector::iterator configcache::getNextInfile(vector *excludeFileHashes) { + for (vector::iterator init = inFiles.begin(); init != inFiles.end(); ++init) { + if (excludeFileHashes != NULL) { + bool excludethisfile = false; + + for (vector::iterator exit = excludeFileHashes->begin(); exit != excludeFileHashes->end(); ++exit) + if ( *exit == hash(init->filename) ) { + excludethisfile = true; + break; + } + + if (excludethisfile) + continue; + } + return init; + } + return inFiles.end(); +}