1/* |
2 * Copyright (c) 2014 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * |
14 * Copyright (c) 2003-2005 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright --- 12 unchanged lines hidden (view full) --- 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Nathan Binkert 41 * Ali Saidi |
42 * Andreas Hansson |
43 */ 44 |
45#include <sstream> 46 |
47#include "base/misc.hh" 48#include "base/random.hh" 49#include "sim/serialize.hh" 50 |
51Random::Random() 52{ |
53 // default random seed |
54 init(5489); 55} 56 57Random::Random(uint32_t s) 58{ 59 init(s); 60} 61 |
62Random::~Random() 63{ 64} 65 |
66void 67Random::init(uint32_t s) |
68{ |
69 gen.seed(s); |
70} 71 |
72void 73Random::serialize(std::ostream &os) |
74{ |
75 panic("Currently not used anywhere.\n"); |
76 |
77 // get the state from the generator 78 std::ostringstream oss; 79 oss << gen; 80 std::string state = oss.str(); 81 paramOut(os, "mt_state", state); |
82} 83 84void |
85Random::unserialize(Checkpoint *cp, const std::string §ion) |
86{ |
87 panic("Currently not used anywhere.\n"); |
88 |
89 // the random generator state did not use to be part of the 90 // checkpoint state, so be forgiving in the unserialization and 91 // keep on going if the parameter is not there 92 std::string state; 93 if (optParamIn(cp, section, "mt_state", state)) { 94 std::istringstream iss(state); 95 iss >> gen; 96 } |
97} 98 99Random random_mt; |