void CPathEstimator::InitEstimator(const std::string& name) {
int numThreads = configHandler.GetInt("HardwareThreadCount", 0);
#if 0 // FIXME mantis #1033
#if (BOOST_VERSION >= 103500)
if (numThreads == 0)
numThreads = boost::thread::hardware_concurrency();
#else
# ifdef USE_GML
if (numThreads == 0)
numThreads = GML_CPU_COUNT;
# endif
#endif
#else //if 0
numThreads = 1;
#endif
if (numThreads > 1) {
// spawn the threads for InitVerticesAndBlocks()
SpawnThreads(numThreads, 0);
JoinThreads(numThreads, 0);
char loadMsg[512];
sprintf(loadMsg, "Reading estimate path costs (%d threads)", numThreads);
PrintLoadMsg(loadMsg);
if (!ReadFile(name)) {
char calcMsg[512];
sprintf(calcMsg, "Analyzing map accessibility [%d] (%d threads)", BLOCK_SIZE, numThreads);
PrintLoadMsg(calcMsg);
// re-spawn the threads for CalculateBlockOffsets()
SpawnThreads(numThreads, 1);
JoinThreads(numThreads, 1);
// re-spawn the threads for EstimatePathCosts()
SpawnThreads(numThreads, 2);
JoinThreads(numThreads, 2);
WriteFile(name);
}
} else {
// no threading
InitVerticesAndBlocks(0, nbrOfVertices, 0, nbrOfBlocks);
PrintLoadMsg("Reading estimate path costs (1 thread)");
if (!ReadFile(name)) {
char calcMsg[512];
sprintf(calcMsg, "Analyzing map accessibility [%d] (1 thread)", BLOCK_SIZE);
PrintLoadMsg(calcMsg);
CalcOffsetsAndPathCosts(0, nbrOfBlocks);
WriteFile(name);
}
}
}
void CPathEstimator::InitEstimator(const std::string& cacheFileName, const std::string& map)
{
int numThreads_tmp = configHandler->Get("HardwareThreadCount", 0);
size_t numThreads = ((numThreads_tmp < 0) ? 0 : numThreads_tmp);
if (numThreads == 0) {
#if (BOOST_VERSION >= 103500)
numThreads = boost::thread::hardware_concurrency();
#elif defined(USE_GML)
numThreads = gmlCPUCount();
#else
numThreads = 1;
#endif
}
if (threads.size() != numThreads) {
threads.resize(numThreads);
pathFinders.resize(numThreads);
}
pathFinders[0] = pathFinder;
// Not much point in multithreading these...
InitVertices();
InitBlocks();
PrintLoadMsg("Reading estimate path costs");
if (!ReadFile(cacheFileName, map)) {
char calcMsg[512];
sprintf(calcMsg, "Analyzing map accessibility [%d]", BLOCK_SIZE);
PrintLoadMsg(calcMsg);
pathBarrier=new boost::barrier(numThreads);
// Start threads if applicable
for(size_t i=1; i<numThreads; ++i) {
pathFinders[i] = new CPathFinder();
threads[i] = new boost::thread(boost::bind(&CPathEstimator::CalcOffsetsAndPathCosts, this, i));
}
// Use the current thread as thread zero
CalcOffsetsAndPathCosts(0);
for(size_t i=1; i<numThreads; ++i) {
threads[i]->join();
delete threads[i];
delete pathFinders[i];
}
delete pathBarrier;
PrintLoadMsg("Writing path data file...");
WriteFile(cacheFileName, map);
}
}
