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*/ |
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#include <algorithm> |
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#include "brains/BlockSnapshotManager.hpp" |
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#include "utils/residentMem.h" |
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#include "utils/physmem.h" |
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#include "utils/Algorithm.hpp" |
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#include "brains/SimInfo.hpp" |
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#include "io/DumpReader.hpp" |
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namespace oopse { |
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BlockSnapshotMananger::BlockSnapshotMananger(SimInfo* info, const std::string& filename, |
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BlockSnapshotManager::BlockSnapshotManager(SimInfo* info, const std::string& filename, |
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int storageLayout, int blockCapacity) |
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: SnapshotManager(storageLayout), info_(info), blockCapacity_(blockCapacity), activeBlocks_(blockCapacity_, -1) { |
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: SnapshotManager(storageLayout), info_(info), blockCapacity_(blockCapacity), |
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activeBlocks_(blockCapacity_, -1), activeRefCount_(blockCapacity_, 0) { |
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|
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nAtoms_ = info->getNGlobalAtoms(); |
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nRigidBodies_ = info->getNGlobalRigidBodies(); |
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|
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double physMem = physmem_total(); |
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double avalPhysMem = physmem_available(); |
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|
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double rssMem = residentMem(); |
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|
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std::cout << "physmem = " << physMem << "\t availablePhysMem = " << avalPhysMem << "\trssMem = "<< rssMem<<std::endl; |
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int bytesPerStuntDouble = DataStorage::getBytesPerStuntDouble(storageLayout); |
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|
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int bytesPerFrame = (nRigidBodies_ + nAtoms_) * bytesPerStuntDouble; |
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|
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int frameCapacity = int (avalPhysMem / bytesPerFrame); |
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int frameCapacity = int (rssMem / bytesPerFrame); |
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nSnapshotPerBlock_ = frameCapacity /blockCapacity_ ; |
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} |
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|
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for (int i = 0; i < nblocks; ++i) { |
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blocks_.push_back(SnapshotBlock(i, (i+1)*nSnapshotPerBlock_); |
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blocks_.push_back(SnapshotBlock(i*nSnapshotPerBlock_, (i+1)*nSnapshotPerBlock_)); |
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} |
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//the last block may not have nSnapshotPerBlock frames, we need to consider this special situation |
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blocks_.back.second = nframes_; |
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blocks_.back().second = nframes_; |
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|
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snapshots_.insert(snapshots_.begin(), nframes_, NULL); |
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snapshots_.insert(snapshots_.begin(), nframes_, static_cast<Snapshot*>(NULL)); |
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|
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} |
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|
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BlockSnapshotMananger::~BlockSnapshotMananger() { |
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BlockSnapshotManager::~BlockSnapshotManager() { |
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currentSnapshot_ = NULL; |
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previousSnapshot_ = NULL; |
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|
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delete reader_; |
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std::for_each(activeBlocks_.begin(), activeBlocks_.end(), unloadBlock); |
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|
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std::vector<int>::iterator i; |
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for (i = activeBlocks_.begin(); i != activeBlocks_.end(); ++i) { |
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if (*i != -1) { |
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unloadBlock(*i); |
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} |
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} |
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} |
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|
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int BlockSnapshotManager::getNActiveBlocks() { |
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return std::count_if(activeBlocks_.begin(), activeBlocks_.end(), std::not); |
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#ifdef __RWSTD |
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int count = 0; |
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std::count_if(activeBlocks_.begin(), activeBlocks_.end(), std::bind2nd(std::not_equal_to<int>(), -1), count); |
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return count; |
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#else |
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return std::count_if(activeBlocks_.begin(), activeBlocks_.end(), std::bind2nd(std::not_equal_to<int>(), -1)); |
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#endif |
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} |
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|
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bool BlockSnapshotManager::isBlockActive(int block) { |
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return std::find(activeBlocks_.begin(), activeBlocks_.end(), block) != activeBlocks_.end() ? true : false; |
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} |
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|
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bool BlockSnapshotManager::loadBlock(int block) { |
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std::vector<int>::iterator i = findActiveBlock(block); |
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bool loadSuccess; |
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if (isBlockActive(block)) { |
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if (i != activeBlocks_.end()) { |
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//if block is already in memory, just increast the reference count |
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++activeRefCount_[i - activeBlocks_.begin()]; |
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loadSuccess = true; |
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} else if (getNActiveBlocks() < blockCapacity_){ |
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|
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for (int i = blocks_[block].first; i < blocks_[block].second; ++i) { |
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snapshots_[i] = loadFrame(i); |
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} |
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|
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std::vector<int>::iterator j; |
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j = std::find(activeBlocks_.begin(), activeBlocks_.end(), -1); |
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assert(j != activeBlocks_.end()); |
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*j = block; |
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//if number of active blocks is less than the block capacity, just load it |
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internalLoad(block); |
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loadSuccess = true; |
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}else { |
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} else if (hasZeroRefBlock() > 0) { |
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//if already reach the block capacity, need to unload a block with 0 reference |
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int zeroRefBlock = getFirstZeroRefBlock(); |
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assert(zeroRefBlock != -1); |
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internalUnload(zeroRefBlock); |
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internalLoad(block); |
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} else { |
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//reach the capacity and all blocks in memory are not zero reference |
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loadSuccess = false; |
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} |
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|
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|
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return loadSuccess; |
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} |
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|
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bool BlockSnapshotManager::unloadBlock(int block) { |
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bool unloadSuccess; |
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if (!isBlockActive(block)){ |
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unloadSuccess = false; |
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} else { |
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for (int i = blocks_[block].first; i < blocks_[block].second; ++i) { |
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delete snapshots_[i]; |
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snapshots_[i] = NULL; |
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std::vector<int>::iterator i = findActiveBlock(block); |
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|
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if (i != activeBlocks_.end()){ |
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--activeRefCount_[i - activeBlocks_.begin()]; |
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if (activeRefCount_[i - activeBlocks_.begin()] < 0) { |
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//in case, unloadBlock called multiple times |
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activeRefCount_[i - activeBlocks_.begin()] = 0; |
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} |
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std::vector<int>::iterator j; |
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j = std::find(activeBlocks_.begin(), activeBlocks_.end(), block); |
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assert(j != activeBlocks_.end()); |
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*j = -1; |
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|
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unloadSuccess = true; |
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} else { |
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unloadSuccess = false; |
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} |
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|
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return unloadSuccess; |
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} |
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|
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void BlockSnapshotManager::internalLoad(int block) { |
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|
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for (int i = blocks_[block].first; i < blocks_[block].second; ++i) { |
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snapshots_[i] = loadFrame(i); |
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} |
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|
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std::vector<int>::iterator j; |
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j = std::find(activeBlocks_.begin(), activeBlocks_.end(), -1); |
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assert(j != activeBlocks_.end()); |
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*j = block; |
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++activeRefCount_[j - activeBlocks_.begin()]; |
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} |
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|
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void BlockSnapshotManager::internalUnload(int block) { |
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for (int i = blocks_[block].first; i < blocks_[block].second; ++i) { |
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delete snapshots_[i]; |
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snapshots_[i] = NULL; |
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} |
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std::vector<int>::iterator j; |
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j = std::find(activeBlocks_.begin(), activeBlocks_.end(), block); |
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assert(j != activeBlocks_.end()); |
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*j = -1; |
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} |
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|
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bool BlockSnapshotManager::hasZeroRefBlock(){ |
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return std::find(activeRefCount_.begin(), activeRefCount_.end(), 0) != activeRefCount_.end() ? true : false; |
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} |
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|
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int BlockSnapshotManager::getFirstZeroRefBlock(){ |
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std::vector<int>::iterator i = std::find(activeRefCount_.begin(), activeRefCount_.end(), 0); |
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return i != activeRefCount_.end() ? activeBlocks_[i - activeRefCount_.begin()] : -1; |
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} |
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|
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std::vector<int> BlockSnapshotManager::getActiveBlocks() { |
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std::vector<int> result; |
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std::copy_if(activeBlocks_.begin(), activeBlocks_.end()); |
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oopse::copy_if(activeBlocks_.begin(), activeBlocks_.end(), std::back_inserter(result), |
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std::bind2nd(std::not_equal_to<int>(), -1)); |
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return result; |
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} |
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Snapshot* BlockSnapshotManager::loadFrame(int frame){ |
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Snapshot* snapshot = new Snapshot(nAtoms_, nRigidBodies_, getStorageLayout()); |
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snapshot->setID(frame); |
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setCurrentSnapshot(snapshot); /** @todo fixed me */ |
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|
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/** @todo fixed me */ |
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Snapshot* oldSnapshot = currentSnapshot_; |
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currentSnapshot_ = snapshot; |
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reader_->readFrame(frame); |
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currentSnapshot_ = oldSnapshot; |
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return snapshot; |
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} |
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