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118 lines
3.7 KiB
118 lines
3.7 KiB
//==============================================================================
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//
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// Copyright (c) 2002-
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// Authors:
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// * Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford, formerly University of Birmingham)
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//
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//------------------------------------------------------------------------------
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//
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// This file is part of PRISM.
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//
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// PRISM is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// PRISM is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with PRISM; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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//==============================================================================
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// includes
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#include "PrismMTBDD.h"
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#include <math.h>
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#include <util.h>
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#include <cudd.h>
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#include <dd.h>
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#include <odd.h>
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#include "PrismMTBDDGlob.h"
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#include "jnipointer.h"
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#include "prism.h"
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//------------------------------------------------------------------------------
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JNIEXPORT jlong __jlongpointer JNICALL Java_mtbdd_PrismMTBDD_PM_1ProbInstReward
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(
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JNIEnv *env,
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jclass cls,
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jlong __jlongpointer t, // trans matrix
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jlong __jlongpointer sr, // state rewards
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jlong __jlongpointer od, // odd
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jlong __jlongpointer rv, // row vars
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jint num_rvars,
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jlong __jlongpointer cv, // col vars
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jint num_cvars,
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jint bound // time bound
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)
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{
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// cast function parameters
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DdNode *trans = jlong_to_DdNode(t); // trans matrix
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DdNode *state_rewards = jlong_to_DdNode(sr); // state rewards
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ODDNode *odd = jlong_to_ODDNode(od); // odd
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DdNode **rvars = jlong_to_DdNode_array(rv); // row vars
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DdNode **cvars = jlong_to_DdNode_array(cv); // col vars
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// mtbdds
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DdNode *sol, *tmp;
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// timing stuff
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long start1, start2, start3, stop;
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double time_taken, time_for_setup, time_for_iters;
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// misc
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int iters;
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// start clocks
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start1 = start2 = util_cpu_time();
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// initial solution is the state rewards
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Cudd_Ref(state_rewards);
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sol = state_rewards;
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// get setup time
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stop = util_cpu_time();
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time_for_setup = (double)(stop - start2)/1000;
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start2 = stop;
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start3 = stop;
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// start iterations
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iters = 0;
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PM_PrintToMainLog(env, "\nStarting iterations...\n");
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// note that we ignore max_iters as we know how any iterations _should_ be performed
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for (iters = 0; iters < bound; iters++) {
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// matrix-vector multiply
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Cudd_Ref(sol);
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tmp = DD_PermuteVariables(ddman, sol, rvars, cvars, num_rvars);
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Cudd_Ref(trans);
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tmp = DD_MatrixMultiply(ddman, trans, tmp, cvars, num_cvars, MM_BOULDER);
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// print occasional status update
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if ((util_cpu_time() - start3) > UPDATE_DELAY) {
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PM_PrintToMainLog(env, "Iteration %d (of %d): ", iters, bound);
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PM_PrintToMainLog(env, "%.2f sec so far\n", ((double)(util_cpu_time() - start2)/1000));
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start3 = util_cpu_time();
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}
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// prepare for next iteration
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Cudd_RecursiveDeref(ddman, sol);
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sol = tmp;
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}
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// stop clocks
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stop = util_cpu_time();
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time_for_iters = (double)(stop - start2)/1000;
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time_taken = (double)(stop - start1)/1000;
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// print iterations/timing info
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PM_PrintToMainLog(env, "\nIterative method: %d iterations in %.2f seconds (average %.6f, setup %.2f)\n", iters, time_taken, time_for_iters/iters, time_for_setup);
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return ptr_to_jlong(sol);
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}
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//------------------------------------------------------------------------------
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