/usr/include/gecode/int/unary/time-tabling.hpp is in libgecode-dev 5.1.0-2build1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
* Guido Tack <tack@gecode.org>
*
* Copyright:
* Christian Schulte, 2015
* Guido Tack, 2010
*
* Last modified:
* $Date: 2016-04-19 17:19:45 +0200 (Tue, 19 Apr 2016) $ by $Author: schulte $
* $Revision: 14967 $
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
namespace Gecode { namespace Int { namespace Unary {
template<class Task>
ExecStatus
timetabling(Space& home, Propagator& p, TaskArray<Task>& t) {
Region r(home);
bool assigned;
if (Event* e = Event::events(r,t,assigned)) {
// Whether resource is free
bool free = true;
// Set of current but not required tasks
Support::BitSet<Region> tasks(r,static_cast<unsigned int>(t.size()));
// Process events
do {
// Current time
int time = e->time();
// Process events for completion of required part
for ( ; (e->type() == Event::LRT) && (e->time() == time); e++)
if (t[e->idx()].mandatory()) {
tasks.set(static_cast<unsigned int>(e->idx()));
free = true;
}
// Process events for completion of task
for ( ; (e->type() == Event::LCT) && (e->time() == time); e++)
tasks.clear(static_cast<unsigned int>(e->idx()));
// Process events for start of task
for ( ; (e->type() == Event::EST) && (e->time() == time); e++)
tasks.set(static_cast<unsigned int>(e->idx()));
// Process events for zero-length task
for ( ; (e->type() == Event::ZRO) && (e->time() == time); e++)
if (!free)
return ES_FAILED;
// Norun start time
int nrstime = time;
// Process events for start of required part
for ( ; (e->type() == Event::ERT) && (e->time() == time); e++)
if (t[e->idx()].mandatory()) {
tasks.clear(static_cast<unsigned int>(e->idx()));
if (!free)
return ES_FAILED;
free = false;
nrstime = time+1;
} else if (t[e->idx()].optional() && !free) {
GECODE_ME_CHECK(t[e->idx()].excluded(home));
}
if (!free)
for (Iter::Values::BitSet<Support::BitSet<Region> > j(tasks);
j(); ++j)
// Task j cannot run from time to next time - 1
if (t[j.val()].mandatory())
GECODE_ME_CHECK(t[j.val()].norun(home, nrstime, e->time() - 1));
} while (e->type() != Event::END);
}
if (assigned)
return home.ES_SUBSUMED(p);
return ES_NOFIX;
}
}}}
// STATISTICS: int-prop
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