Mercurial > hg > truffle
view test/compiler/5091921/Test6890943.java @ 4837:eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
Summary: Re-enable survivors during the initial-mark pause. Afterwards, the concurrent marking threads have to scan them and mark everything reachable from them. The next GC will have to wait for the survivors to be scanned.
Reviewed-by: brutisso, johnc
author | tonyp |
---|---|
date | Wed, 25 Jan 2012 12:58:23 -0500 |
parents | bad7ecd0b6ed |
children | 514efad5e81a |
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/* * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ /** * @test * @bug 6890943 * @summary JVM mysteriously gives wrong result on 64-bit 1.6 VMs in hotspot mode. * * @run shell Test6890943.sh */ import java.util.*; import java.io.*; import java.util.regex.*; public class Test6890943 { public static final boolean AIR = true, ROCK = false; public static void main(String[] args) { new Test6890943().go(); } int r, c, f, t; boolean[][] grid; public void go() { Scanner s = new Scanner(System.in); s.useDelimiter("\\s+"); int T = s.nextInt(); for (t = 0 ; t < T ; t++) { r = s.nextInt(); c = s.nextInt(); f = s.nextInt(); grid = new boolean[r][c]; for (int x = 0 ; x < r ; x++) { String line = s.next(); for (int y = 0 ; y < c ; y++) grid[x][y] = line.charAt(y) == '.'; } int digs = solve(); String res = digs == -1 ? "No" : "Yes " + digs; System.out.printf("Case #%d: %s\n", t+1, res); } } Map<Integer, Integer> M = new HashMap<Integer, Integer>(); private int solve() { M = new HashMap<Integer, Integer>(); M.put(calcWalkingRange(0, 0), 0); for (int digDown = 0 ; digDown < r ; digDown++) { Map<Integer, Integer> tries = new HashMap<Integer, Integer>(); for (Map.Entry<Integer, Integer> m : M.entrySet()) { int q = m.getKey(); if (depth(q) != (digDown)) continue; if (stuck(q)) continue; tries.put(q, m.getValue()); } for (Map.Entry<Integer, Integer> m : tries.entrySet()) { int q = m.getKey(); int fallLeftDelta = 0, fallRightDelta = 0; //fall left int fallLeft = fall(digDown, start(q)); if (fallLeft > 0) { fallLeftDelta = 1; if (fallLeft <= f) addToM(calcWalkingRange(digDown+fallLeft, start(q)), m.getValue()); } //fall right int fallRight = fall(digDown, end(q)); if (fallRight > 0) { fallRightDelta = 1; if (fallRight <= f) addToM(calcWalkingRange(digDown+fallRight, end(q)), m.getValue()); } for (int p = start(q) + fallLeftDelta ; p <= end(q) - fallRightDelta ; p++) { //goLeft for (int digSpot = p ; digSpot > start(q) +fallLeftDelta ; digSpot--) { int fallDown = 1+fall(digDown+1, digSpot); if (fallDown <= f) { if (fallDown == 1) { addToM(calcWalkingRange(digDown + 1, digSpot, digSpot, p), m.getValue() + Math.abs(digSpot-p)+1); } else { addToM(calcWalkingRange(digDown + fallDown, digSpot), m.getValue() + Math.abs(digSpot-p)+1); } } } //goRight for (int digSpot = p ; digSpot < end(q)-fallRightDelta ;digSpot++) { int fallDown = 1+fall(digDown+1, digSpot); if (fallDown <= f) { if (fallDown == 1) { addToM(calcWalkingRange(digDown + 1, digSpot, p, digSpot), m.getValue() + Math.abs(digSpot-p)+1); } else { addToM(calcWalkingRange(digDown + fallDown, digSpot), m.getValue() + Math.abs(digSpot-p)+1); } } } } } } int result = Integer.MAX_VALUE; for (Map.Entry<Integer, Integer> m : M.entrySet()) { if (depth(m.getKey()) == r-1) result = Math.min(m.getValue(), result); } if (result == Integer.MAX_VALUE) return -1; return result; } private void addToM(int q, int i) { Integer original = M.get(q); if ( original == null ) M.put(q, i); else M.put(q, Math.min(original, i)); } private int fall(int row, int column) { int res = 0; for ( int p = row+1 ; p < r ; p++) { if (grid[p][column] == AIR) res++; else break; } return res; } private boolean stuck(int q) { return start(q) == end(q); } private int depth(int q) { return q % 50; } private int start(int q) { return q / (50*50); } private int end(int q) { return (q / 50) % 50; } private int calcWalkingRange(int depth, int pos) { return calcWalkingRange(depth, pos, Integer.MAX_VALUE, Integer.MIN_VALUE); } private int calcWalkingRange(int depth, int pos, int airOverrideStart, int airOverrideEnd) { int left = pos, right = pos; if (depth >= r) return (c-1)*50 + depth; while (left > 0) { if (grid[depth][left-1] == ROCK && (left-1 < airOverrideStart || left-1 > airOverrideEnd)) break; if (depth < r-1 && grid[depth+1][left-1] == AIR) { left--; break; } left--; } while (right < c-1) { if (grid[depth][right+1] == ROCK && (right+1 < airOverrideStart || right+1 > airOverrideEnd)) break; if (depth < r-1 && grid[depth+1][right+1] == AIR) { right++; break; } right++; } return left *50*50 + right*50 + depth; } }