#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_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; ipara<Paras.size(); ipara++)
+ parastring << "_" << Paras[ipara].id << Paras[ipara].val;
+
+ return parastring.str();
+}
+
+string configcache::getFileId(int actnequi, const bool& superextended, const bool& shortid)
{
stringstream fileid;
- if(!shortid) fileid << CACHEID << "_" << NEQUI << "_" << NSKIP;
- for(int ipara=0; ipara<Paras.size(); ipara++)
- fileid << "_" << Paras[ipara].id << Paras[ipara].val;
+ if(!shortid) fileid << CACHEID << "_" << actnequi << "_" << NSKIP;
+
+ if( superextended )
+ fileid << "_" << hash( paraString() );
+ else
+ fileid << paraString();
return fileid.str();
}
{
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;
- 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++)
{
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, "_");
}
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<unsigned long> *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;
while(true)
{
- if( (!inFile.is_open()) && inFiles.size() == 0 ) return false;
+ vector<infiledesc>::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;
- inFile.open( (DATADIR + "/" + inFiles.back()).c_str(), std::ios::binary );
- inFiles.pop_back();
+ openFileDesc = *inFileIt;
- if( !inFile.is_open() ) continue;
+ if (openFileDesc.nequi < NEQUI)
+ doVirtualEquilibration = true;
+ else
+ doVirtualEquilibration = false;
- inBuffer = new boost::iostreams::filtering_istreambuf;
- inBuffer->push( boost::iostreams::bzip2_decompressor() );
- inBuffer->push(inFile);
+ firstUsedConfig = true;
+
+ 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 (std::exception const& ex) {
- if(out) *out->log << "CCACHE: Caught exception: " << ex.what() << 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 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;
+
+ 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;
- boost::iostreams::write(*outBuffer, configMem, configSize);
+ 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){
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() )
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<infiledesc>::iterator configcache::getNextInfile(vector<unsigned long> *excludeFileHashes) {
+ for (vector<infiledesc>::iterator init = inFiles.begin(); init != inFiles.end(); ++init) {
+ if (excludeFileHashes != NULL) {
+ bool excludethisfile = false;
+
+ for (vector<unsigned long>::iterator exit = excludeFileHashes->begin(); exit != excludeFileHashes->end(); ++exit)
+ if ( *exit == hash(init->filename) ) {
+ excludethisfile = true;
+ break;
+ }
+
+ if (excludethisfile)
+ continue;
+ }
+ return init;
+ }
+ return inFiles.end();
+}
projects / phys / latlib.git / blobdiff