--- trunk/src/io/DumpWriter.cpp 2005/04/15 22:04:00 507 +++ trunk/src/io/DumpWriter.cpp 2008/01/23 21:23:02 1217 @@ -43,6 +43,9 @@ #include "primitives/Molecule.hpp" #include "utils/simError.h" #include "io/basic_teebuf.hpp" +#include "io/gzstream.hpp" +#include "io/Globals.hpp" + #ifdef IS_MPI #include #endif //is_mpi @@ -51,69 +54,131 @@ namespace oopse { DumpWriter::DumpWriter(SimInfo* info) : info_(info), filename_(info->getDumpFileName()), eorFilename_(info->getFinalConfigFileName()){ + + Globals* simParams = info->getSimParams(); + needCompression_ = simParams->getCompressDumpFile(); + needForceVector_ = simParams->getOutputForceVector(); + createDumpFile_ = true; +#ifdef HAVE_LIBZ + if (needCompression_) { + filename_ += ".gz"; + eorFilename_ += ".gz"; + } +#endif + #ifdef IS_MPI - if (worldRank == 0) { + if (worldRank == 0) { #endif // is_mpi + + dumpFile_ = createOStream(filename_); - dumpFile_.open(filename_.c_str(), std::ios::out | std::ios::trunc); + if (!dumpFile_) { + sprintf(painCave.errMsg, "Could not open \"%s\" for dump output.\n", + filename_.c_str()); + painCave.isFatal = 1; + simError(); + } - if (!dumpFile_) { - sprintf(painCave.errMsg, "Could not open \"%s\" for dump output.\n", - filename_.c_str()); - painCave.isFatal = 1; - simError(); - } - #ifdef IS_MPI - } + } - sprintf(checkPointMsg, "Sucessfully opened output file for dumping.\n"); - MPIcheckPoint(); - #endif // is_mpi - } + } DumpWriter::DumpWriter(SimInfo* info, const std::string& filename) : info_(info), filename_(filename){ + + Globals* simParams = info->getSimParams(); + eorFilename_ = filename_.substr(0, filename_.rfind(".")) + ".eor"; + + needCompression_ = simParams->getCompressDumpFile(); + needForceVector_ = simParams->getOutputForceVector(); + createDumpFile_ = true; +#ifdef HAVE_LIBZ + if (needCompression_) { + filename_ += ".gz"; + eorFilename_ += ".gz"; + } +#endif + #ifdef IS_MPI - if (worldRank == 0) { + if (worldRank == 0) { #endif // is_mpi - eorFilename_ = filename_.substr(0, filename_.rfind(".")) + ".eor"; - dumpFile_.open(filename_.c_str(), std::ios::out | std::ios::trunc); + + dumpFile_ = createOStream(filename_); - if (!dumpFile_) { - sprintf(painCave.errMsg, "Could not open \"%s\" for dump output.\n", - filename_.c_str()); - painCave.isFatal = 1; - simError(); - } + if (!dumpFile_) { + sprintf(painCave.errMsg, "Could not open \"%s\" for dump output.\n", + filename_.c_str()); + painCave.isFatal = 1; + simError(); + } #ifdef IS_MPI - } + } - sprintf(checkPointMsg, "Sucessfully opened output file for dumping.\n"); - MPIcheckPoint(); - #endif // is_mpi + } + + DumpWriter::DumpWriter(SimInfo* info, const std::string& filename, bool writeDumpFile) + : info_(info), filename_(filename){ + + Globals* simParams = info->getSimParams(); + eorFilename_ = filename_.substr(0, filename_.rfind(".")) + ".eor"; + + needCompression_ = simParams->getCompressDumpFile(); + needForceVector_ = simParams->getOutputForceVector(); + +#ifdef HAVE_LIBZ + if (needCompression_) { + filename_ += ".gz"; + eorFilename_ += ".gz"; } +#endif + +#ifdef IS_MPI + + if (worldRank == 0) { +#endif // is_mpi + + createDumpFile_ = writeDumpFile; + if (createDumpFile_) { + dumpFile_ = createOStream(filename_); + + if (!dumpFile_) { + sprintf(painCave.errMsg, "Could not open \"%s\" for dump output.\n", + filename_.c_str()); + painCave.isFatal = 1; + simError(); + } + } +#ifdef IS_MPI + + } + +#endif // is_mpi + + } + DumpWriter::~DumpWriter() { #ifdef IS_MPI if (worldRank == 0) { #endif // is_mpi - - dumpFile_.close(); - + if (createDumpFile_){ + writeClosing(*dumpFile_); + delete dumpFile_; + } #ifdef IS_MPI } @@ -122,501 +187,211 @@ namespace oopse { } - void DumpWriter::writeCommentLine(std::ostream& os, Snapshot* s) { + void DumpWriter::writeFrameProperties(std::ostream& os, Snapshot* s) { - double currentTime; + char buffer[1024]; + + os << " \n"; + + RealType currentTime = s->getTime(); + sprintf(buffer, " Time: %.10g\n", currentTime); + os << buffer; + Mat3x3d hmat; - double chi; - double integralOfChiDt; - Mat3x3d eta; - - currentTime = s->getTime(); hmat = s->getHmat(); - chi = s->getChi(); - integralOfChiDt = s->getIntegralOfChiDt(); - eta = s->getEta(); - - os << currentTime << ";\t" - << hmat(0, 0) << "\t" << hmat(1, 0) << "\t" << hmat(2, 0) << ";\t" - << hmat(0, 1) << "\t" << hmat(1, 1) << "\t" << hmat(2, 1) << ";\t" - << hmat(0, 2) << "\t" << hmat(1, 2) << "\t" << hmat(2, 2) << ";\t"; + sprintf(buffer, " Hmat: {{ %.10g, %.10g, %.10g }, { %.10g, %.10g, %.10g }, { %.10g, %.10g, %.10g }}\n", + hmat(0, 0), hmat(1, 0), hmat(2, 0), + hmat(0, 1), hmat(1, 1), hmat(2, 1), + hmat(0, 2), hmat(1, 2), hmat(2, 2)); + os << buffer; - //write out additional parameters, such as chi and eta + RealType chi = s->getChi(); + RealType integralOfChiDt = s->getIntegralOfChiDt(); + sprintf(buffer, " Thermostat: %.10g , %.10g\n", chi, integralOfChiDt); + os << buffer; - os << chi << "\t" << integralOfChiDt << "\t;"; + Mat3x3d eta; + eta = s->getEta(); + sprintf(buffer, " Barostat: {{ %.10g, %.10g, %.10g }, { %.10g, %.10g, %.10g }, { %.10g, %.10g, %.10g }}\n", + eta(0, 0), eta(1, 0), eta(2, 0), + eta(0, 1), eta(1, 1), eta(2, 1), + eta(0, 2), eta(1, 2), eta(2, 2)); + os << buffer; - os << eta(0, 0) << "\t" << eta(1, 0) << "\t" << eta(2, 0) << ";\t" - << eta(0, 1) << "\t" << eta(1, 1) << "\t" << eta(2, 1) << ";\t" - << eta(0, 2) << "\t" << eta(1, 2) << "\t" << eta(2, 2) << ";"; - - os << "\n"; + os << " \n"; } void DumpWriter::writeFrame(std::ostream& os) { - const int BUFFERSIZE = 2000; - const int MINIBUFFERSIZE = 100; - char tempBuffer[BUFFERSIZE]; - char writeLine[BUFFERSIZE]; +#ifdef IS_MPI + MPI_Status istatus; +#endif - Quat4d q; - Vector3d ji; - Vector3d pos; - Vector3d vel; - Molecule* mol; StuntDouble* integrableObject; SimInfo::MoleculeIterator mi; Molecule::IntegrableObjectIterator ii; - - int nTotObjects; - nTotObjects = info_->getNGlobalIntegrableObjects(); #ifndef IS_MPI + os << " \n"; + + writeFrameProperties(os, info_->getSnapshotManager()->getCurrentSnapshot()); + os << " \n"; + for (mol = info_->beginMolecule(mi); mol != NULL; mol = info_->nextMolecule(mi)) { - os << nTotObjects << "\n"; - - writeCommentLine(os, info_->getSnapshotManager()->getCurrentSnapshot()); + + for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; + integrableObject = mol->nextIntegrableObject(ii)) { + os << prepareDumpLine(integrableObject); + + } + } + os << " \n"; + + os << " \n"; + os.flush(); +#else + //every node prepares the dump lines for integrable objects belong to itself + std::string buffer; for (mol = info_->beginMolecule(mi); mol != NULL; mol = info_->nextMolecule(mi)) { - for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; - integrableObject = mol->nextIntegrableObject(ii)) { - - pos = integrableObject->getPos(); - vel = integrableObject->getVel(); - - sprintf(tempBuffer, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t", - integrableObject->getType().c_str(), - pos[0], pos[1], pos[2], - vel[0], vel[1], vel[2]); - - strcpy(writeLine, tempBuffer); - - if (integrableObject->isDirectional()) { - q = integrableObject->getQ(); - ji = integrableObject->getJ(); - - sprintf(tempBuffer, "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n", - q[0], q[1], q[2], q[3], - ji[0], ji[1], ji[2]); - strcat(writeLine, tempBuffer); - } else { - strcat(writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n"); - } - - os << writeLine; - + for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; + integrableObject = mol->nextIntegrableObject(ii)) { + buffer += prepareDumpLine(integrableObject); } } - - os.flush(); -#else // is_mpi - /********************************************************************* - * Documentation? You want DOCUMENTATION? - * - * Why all the potatoes below? - * - * To make a long story short, the original version of DumpWriter - * worked in the most inefficient way possible. Node 0 would - * poke each of the node for an individual atom's formatted data - * as node 0 worked its way down the global index. This was particularly - * inefficient since the method blocked all processors at every atom - * (and did it twice!). - * - * An intermediate version of DumpWriter could be described from Node - * zero's perspective as follows: - * - * 1) Have 100 of your friends stand in a circle. - * 2) When you say go, have all of them start tossing potatoes at - * you (one at a time). - * 3) Catch the potatoes. - * - * It was an improvement, but MPI has buffers and caches that could - * best be described in this analogy as "potato nets", so there's no - * need to block the processors atom-by-atom. - * - * This new and improved DumpWriter works in an even more efficient - * way: - * - * 1) Have 100 of your friend stand in a circle. - * 2) When you say go, have them start tossing 5-pound bags of - * potatoes at you. - * 3) Once you've caught a friend's bag of potatoes, - * toss them a spud to let them know they can toss another bag. - * - * How's THAT for documentation? - * - *********************************************************************/ + const int masterNode = 0; - int * potatoes; - int myPotato; - int nProc; - int which_node; - double atomData[13]; - int isDirectional; - char MPIatomTypeString[MINIBUFFERSIZE]; - int msgLen; // the length of message actually recieved at master nodes - int haveError; - MPI_Status istatus; - int nCurObj; - - // code to find maximum tag value - int * tagub; - int flag; - int MAXTAG; - MPI_Attr_get(MPI_COMM_WORLD, MPI_TAG_UB, &tagub, &flag); + if (worldRank == masterNode) { + os << " \n"; + writeFrameProperties(os, info_->getSnapshotManager()->getCurrentSnapshot()); + os << " \n"; + + os << buffer; - if (flag) { - MAXTAG = *tagub; - } else { - MAXTAG = 32767; - } - - if (worldRank == masterNode) { //master node (node 0) is responsible for writing the dump file - - // Node 0 needs a list of the magic potatoes for each processor; - + int nProc; MPI_Comm_size(MPI_COMM_WORLD, &nProc); - potatoes = new int[nProc]; + for (int i = 1; i < nProc; ++i) { - //write out the comment lines - for(int i = 0; i < nProc; i++) { - potatoes[i] = 0; - } + // receive the length of the string buffer that was + // prepared by processor i + int recvLength; + MPI_Recv(&recvLength, 1, MPI_INT, i, 0, MPI_COMM_WORLD, &istatus); + char* recvBuffer = new char[recvLength]; + if (recvBuffer == NULL) { + } else { + MPI_Recv(recvBuffer, recvLength, MPI_CHAR, i, 0, MPI_COMM_WORLD, &istatus); + os << recvBuffer; + delete recvBuffer; + } + } + os << " \n"; + + os << " \n"; + os.flush(); + } else { + int sendBufferLength = buffer.size() + 1; + MPI_Send(&sendBufferLength, 1, MPI_INT, masterNode, 0, MPI_COMM_WORLD); + MPI_Send((void *)buffer.c_str(), sendBufferLength, MPI_CHAR, masterNode, 0, MPI_COMM_WORLD); + } - os << nTotObjects << "\n"; - writeCommentLine(os, info_->getSnapshotManager()->getCurrentSnapshot()); +#endif // is_mpi - for(int i = 0; i < info_->getNGlobalMolecules(); i++) { + } - // Get the Node number which has this atom; + std::string DumpWriter::prepareDumpLine(StuntDouble* integrableObject) { + + int index = integrableObject->getGlobalIntegrableObjectIndex(); + std::string type("pv"); + std::string line; + char tempBuffer[4096]; - which_node = info_->getMolToProc(i); + Vector3d pos; + Vector3d vel; + pos = integrableObject->getPos(); + vel = integrableObject->getVel(); + sprintf(tempBuffer, "%18.10g %18.10g %18.10g %13e %13e %13e", + pos[0], pos[1], pos[2], + vel[0], vel[1], vel[2]); + line += tempBuffer; - if (which_node != masterNode) { //current molecule is in slave node - if (potatoes[which_node] + 1 >= MAXTAG) { - // The potato was going to exceed the maximum value, - // so wrap this processor potato back to 0: - - potatoes[which_node] = 0; - MPI_Send(&potatoes[which_node], 1, MPI_INT, which_node, 0, - MPI_COMM_WORLD); - } - - myPotato = potatoes[which_node]; - - //recieve the number of integrableObject in current molecule - MPI_Recv(&nCurObj, 1, MPI_INT, which_node, myPotato, - MPI_COMM_WORLD, &istatus); - myPotato++; - - for(int l = 0; l < nCurObj; l++) { - if (potatoes[which_node] + 2 >= MAXTAG) { - // The potato was going to exceed the maximum value, - // so wrap this processor potato back to 0: - - potatoes[which_node] = 0; - MPI_Send(&potatoes[which_node], 1, MPI_INT, which_node, - 0, MPI_COMM_WORLD); - } - - MPI_Recv(MPIatomTypeString, MINIBUFFERSIZE, MPI_CHAR, - which_node, myPotato, MPI_COMM_WORLD, - &istatus); - - myPotato++; - - MPI_Recv(atomData, 13, MPI_DOUBLE, which_node, myPotato, - MPI_COMM_WORLD, &istatus); - myPotato++; - - MPI_Get_count(&istatus, MPI_DOUBLE, &msgLen); - - if (msgLen == 13) - isDirectional = 1; - else - isDirectional = 0; - - // If we've survived to here, format the line: - - if (!isDirectional) { - sprintf(writeLine, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t", - MPIatomTypeString, atomData[0], - atomData[1], atomData[2], - atomData[3], atomData[4], - atomData[5]); - - strcat(writeLine, - "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n"); - } else { - sprintf(writeLine, - "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n", - MPIatomTypeString, - atomData[0], - atomData[1], - atomData[2], - atomData[3], - atomData[4], - atomData[5], - atomData[6], - atomData[7], - atomData[8], - atomData[9], - atomData[10], - atomData[11], - atomData[12]); - } - - os << writeLine; - - } // end for(int l =0) - - potatoes[which_node] = myPotato; - } else { //master node has current molecule - - mol = info_->getMoleculeByGlobalIndex(i); - - if (mol == NULL) { - sprintf(painCave.errMsg, "Molecule not found on node %d!", worldRank); - painCave.isFatal = 1; - simError(); - } - - for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; - integrableObject = mol->nextIntegrableObject(ii)) { - - pos = integrableObject->getPos(); - vel = integrableObject->getVel(); - - atomData[0] = pos[0]; - atomData[1] = pos[1]; - atomData[2] = pos[2]; - - atomData[3] = vel[0]; - atomData[4] = vel[1]; - atomData[5] = vel[2]; - - isDirectional = 0; - - if (integrableObject->isDirectional()) { - isDirectional = 1; - - q = integrableObject->getQ(); - ji = integrableObject->getJ(); - - for(int j = 0; j < 6; j++) { - atomData[j] = atomData[j]; - } - - atomData[6] = q[0]; - atomData[7] = q[1]; - atomData[8] = q[2]; - atomData[9] = q[3]; - - atomData[10] = ji[0]; - atomData[11] = ji[1]; - atomData[12] = ji[2]; - } - - // If we've survived to here, format the line: - - if (!isDirectional) { - sprintf(writeLine, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t", - integrableObject->getType().c_str(), atomData[0], - atomData[1], atomData[2], - atomData[3], atomData[4], - atomData[5]); - - strcat(writeLine, - "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n"); - } else { - sprintf(writeLine, - "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n", - integrableObject->getType().c_str(), - atomData[0], - atomData[1], - atomData[2], - atomData[3], - atomData[4], - atomData[5], - atomData[6], - atomData[7], - atomData[8], - atomData[9], - atomData[10], - atomData[11], - atomData[12]); - } - - - os << writeLine; - - } //end for(iter = integrableObject.begin()) - } - } //end for(i = 0; i < mpiSim->getNmol()) - - os.flush(); - - sprintf(checkPointMsg, "Sucessfully took a dump.\n"); - MPIcheckPoint(); - - delete [] potatoes; - } else { - - // worldRank != 0, so I'm a remote node. - - // Set my magic potato to 0: - - myPotato = 0; - - for(int i = 0; i < info_->getNGlobalMolecules(); i++) { - - // Am I the node which has this integrableObject? - int whichNode = info_->getMolToProc(i); - if (whichNode == worldRank) { - if (myPotato + 1 >= MAXTAG) { - - // The potato was going to exceed the maximum value, - // so wrap this processor potato back to 0 (and block until - // node 0 says we can go: - - MPI_Recv(&myPotato, 1, MPI_INT, 0, 0, MPI_COMM_WORLD, - &istatus); - } - - mol = info_->getMoleculeByGlobalIndex(i); - - - nCurObj = mol->getNIntegrableObjects(); - - MPI_Send(&nCurObj, 1, MPI_INT, 0, myPotato, MPI_COMM_WORLD); - myPotato++; - - for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; - integrableObject = mol->nextIntegrableObject(ii)) { - - if (myPotato + 2 >= MAXTAG) { - - // The potato was going to exceed the maximum value, - // so wrap this processor potato back to 0 (and block until - // node 0 says we can go: - - MPI_Recv(&myPotato, 1, MPI_INT, 0, 0, MPI_COMM_WORLD, - &istatus); - } - - pos = integrableObject->getPos(); - vel = integrableObject->getVel(); - - atomData[0] = pos[0]; - atomData[1] = pos[1]; - atomData[2] = pos[2]; - - atomData[3] = vel[0]; - atomData[4] = vel[1]; - atomData[5] = vel[2]; - - isDirectional = 0; - - if (integrableObject->isDirectional()) { - isDirectional = 1; - - q = integrableObject->getQ(); - ji = integrableObject->getJ(); - - atomData[6] = q[0]; - atomData[7] = q[1]; - atomData[8] = q[2]; - atomData[9] = q[3]; - - atomData[10] = ji[0]; - atomData[11] = ji[1]; - atomData[12] = ji[2]; - } - - strncpy(MPIatomTypeString, integrableObject->getType().c_str(), MINIBUFFERSIZE); - - // null terminate the std::string before sending (just in case): - MPIatomTypeString[MINIBUFFERSIZE - 1] = '\0'; - - MPI_Send(MPIatomTypeString, MINIBUFFERSIZE, MPI_CHAR, 0, - myPotato, MPI_COMM_WORLD); - - myPotato++; - - if (isDirectional) { - MPI_Send(atomData, 13, MPI_DOUBLE, 0, myPotato, - MPI_COMM_WORLD); - } else { - MPI_Send(atomData, 6, MPI_DOUBLE, 0, myPotato, - MPI_COMM_WORLD); - } - - myPotato++; - } - - } - - } - sprintf(checkPointMsg, "Sucessfully took a dump.\n"); - MPIcheckPoint(); + if (integrableObject->isDirectional()) { + type += "qj"; + Quat4d q; + Vector3d ji; + q = integrableObject->getQ(); + ji = integrableObject->getJ(); + sprintf(tempBuffer, " %13e %13e %13e %13e %13e %13e %13e", + q[0], q[1], q[2], q[3], + ji[0], ji[1], ji[2]); + line += tempBuffer; } -#endif // is_mpi - + if (needForceVector_) { + type += "ft"; + Vector3d frc; + Vector3d trq; + frc = integrableObject->getFrc(); + trq = integrableObject->getTrq(); + + sprintf(tempBuffer, " %13e %13e %13e %13e %13e %13e", + frc[0], frc[1], frc[2], + trq[0], trq[1], trq[2]); + line += tempBuffer; + } + + sprintf(tempBuffer, "%10d %7s %s\n", index, type.c_str(), line.c_str()); + return std::string(tempBuffer); } void DumpWriter::writeDump() { - writeFrame(dumpFile_); - + writeFrame(*dumpFile_); } void DumpWriter::writeEor() { - std::ofstream eorStream; + std::ostream* eorStream; #ifdef IS_MPI if (worldRank == 0) { #endif // is_mpi - eorStream.open(eorFilename_.c_str()); - if (!eorStream.is_open()) { - sprintf(painCave.errMsg, "DumpWriter : Could not open \"%s\" for writing.\n", - eorFilename_.c_str()); - painCave.isFatal = 1; - simError(); - } + eorStream = createOStream(eorFilename_); #ifdef IS_MPI } #endif // is_mpi - writeFrame(eorStream); + writeFrame(*eorStream); + +#ifdef IS_MPI + if (worldRank == 0) { +#endif // is_mpi + writeClosing(*eorStream); + delete eorStream; +#ifdef IS_MPI + } +#endif // is_mpi + } void DumpWriter::writeDumpAndEor() { - std::ofstream eorStream; std::vector buffers; + std::ostream* eorStream; #ifdef IS_MPI if (worldRank == 0) { #endif // is_mpi - buffers.push_back(dumpFile_.rdbuf()); + buffers.push_back(dumpFile_->rdbuf()); - eorStream.open(eorFilename_.c_str()); - if (!eorStream.is_open()) { - sprintf(painCave.errMsg, "DumpWriter : Could not open \"%s\" for writing.\n", - eorFilename_.c_str()); - painCave.isFatal = 1; - simError(); - } + eorStream = createOStream(eorFilename_); - buffers.push_back(eorStream.rdbuf()); + buffers.push_back(eorStream->rdbuf()); #ifdef IS_MPI } @@ -626,9 +401,42 @@ namespace oopse { std::ostream os(&tbuf); writeFrame(os); + +#ifdef IS_MPI + if (worldRank == 0) { +#endif // is_mpi + writeClosing(*eorStream); + delete eorStream; +#ifdef IS_MPI + } +#endif // is_mpi } + std::ostream* DumpWriter::createOStream(const std::string& filename) { + std::ostream* newOStream; +#ifdef HAVE_LIBZ + if (needCompression_) { + newOStream = new ogzstream(filename.c_str()); + } else { + newOStream = new std::ofstream(filename.c_str()); + } +#else + newOStream = new std::ofstream(filename.c_str()); +#endif + //write out MetaData first + (*newOStream) << "" << std::endl; + (*newOStream) << " " << std::endl; + (*newOStream) << info_->getRawMetaData(); + (*newOStream) << " " << std::endl; + return newOStream; + } + void DumpWriter::writeClosing(std::ostream& os) { + + os << "\n"; + os.flush(); + } + }//end namespace oopse