134dfc73de
* spot/bin/: Move... * bin/: ... here. * spot/tests/: Move... * tests/: ... here. * Makefile.am, README, bench/stutter/Makefile.am, bench/stutter/stutter_invariance_formulas.cc, doc/Makefile.am, configure.ac, debian/rules, spot/Makefile.am, spot/ltsmin/Makefile.am, spot/ltsmin/kripke.test, spot/sanity/style.test, python/tests/run.in: Adjust.
440 lines
12 KiB
C++
440 lines
12 KiB
C++
// -*- coding: utf-8 -*-
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// Copyright (C) 2015 Laboratoire de Recherche et Développement de
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// l'Epita (LRDE).
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//
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// This file is part of Spot, a model checking library.
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//
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// Spot is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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//
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// Spot is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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// 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 this program. If not, see <http://www.gnu.org/licenses/>.
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#include "common_trans.hh"
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#include <cstring>
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#include <cstdlib>
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#include <cassert>
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#include <unistd.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include <iomanip>
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#include "error.h"
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#include <spot/tl/print.hh>
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#include "common_conv.hh"
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#include <spot/misc/escape.hh>
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// A set of tools for which we know the correct output
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static struct shorthands_t
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{
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const char* prefix;
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const char* suffix;
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}
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shorthands[] = {
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{ "lbt", " <%L>%O" },
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{ "ltl2ba", " -f %s>%O" },
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{ "ltl2dstar", " --output-format=hoa %L %O"},
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{ "ltl2tgba", " -H %f>%O" },
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{ "ltl3ba", " -f %s>%O" },
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{ "ltl3dra", " -f %s>%O" },
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{ "modella", " %L %O" },
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{ "spin", " -f %s>%O" },
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};
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static void show_shorthands()
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{
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std::cout
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<< ("If a COMMANDFMT does not use any %-sequence, and starts with one of\n"
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"the following words, then the string on the right is appended.\n\n");
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for (auto& s: shorthands)
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std::cout << " "
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<< std::left << std::setw(12) << s.prefix
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<< s.suffix << '\n';
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std::cout
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<< ("\nAny {name} and directory component is skipped for the purpose of\n"
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"matching those prefixes. So for instance\n"
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" '{DRA} ~/mytools/ltl2dstar-0.5.2'\n"
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"will changed into\n"
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" '{DRA} ~/mytools/ltl2dstar-0.5.2 --output-format=hoa %L %O'\n");
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}
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translator_spec::translator_spec(const char* spec)
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: spec(spec), cmd(spec), name(spec)
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{
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if (*cmd == '{')
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{
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// Match the closing '}'
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const char* pos = cmd;
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unsigned count = 1;
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while (*++pos)
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{
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if (*pos == '{')
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++count;
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else if (*pos == '}')
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if (!--count)
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{
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name = strndup(cmd + 1, pos - cmd - 1);
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cmd = pos + 1;
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while (*cmd == ' ' || *cmd == '\t')
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++cmd;
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break;
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}
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}
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}
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// If there is no % in the string, look for a known
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// command from our shorthand list. If we find it,
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// add the suffix.
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bool allocated = false;
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if (!strchr(cmd, '%'))
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{
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// Skip any leading directory name.
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auto basename = cmd;
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auto pos = cmd;
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while (*pos)
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{
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if (*pos == '/')
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basename = pos + 1;
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else if (*pos == ' ')
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break;
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++pos;
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}
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// Match a shorthand.
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for (auto& p: shorthands)
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{
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int n = strlen(p.prefix);
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if (strncmp(basename, p.prefix, n) == 0)
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{
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int m = strlen(p.suffix);
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int q = strlen(cmd);
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char* tmp = static_cast<char*>(malloc(q + m + 1));
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strcpy(tmp, cmd);
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strcpy(tmp + q, p.suffix);
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cmd = tmp;
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allocated = true;
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break;
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}
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}
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}
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if (!allocated)
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cmd = strdup(cmd);
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}
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translator_spec::translator_spec(const translator_spec& other)
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: spec(other.spec), cmd(other.cmd), name(other.name)
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{
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if (name != spec)
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name = strdup(name);
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if (cmd != spec)
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cmd = strdup(cmd);
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}
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translator_spec::~translator_spec()
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{
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if (name != spec)
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free(const_cast<char*>(name));
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if (cmd != spec)
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free(const_cast<char*>(cmd));
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}
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std::vector<translator_spec> translators;
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void
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quoted_string::print(std::ostream& os, const char*) const
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{
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spot::quote_shell_string(os, val().c_str());
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}
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printable_result_filename::printable_result_filename()
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{
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val_ = nullptr;
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}
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printable_result_filename::~printable_result_filename()
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{
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delete val_;
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}
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void printable_result_filename::reset(unsigned n)
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{
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translator_num = n;
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}
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void printable_result_filename::cleanup()
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{
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delete val_;
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val_ = nullptr;
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}
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void
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printable_result_filename::print(std::ostream& os, const char*) const
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{
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char prefix[30];
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snprintf(prefix, sizeof prefix, "lcr-o%u-", translator_num);
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const_cast<printable_result_filename*>(this)->val_ =
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spot::create_tmpfile(prefix);
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spot::quote_shell_string(os, val()->name());
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}
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translator_runner::translator_runner(spot::bdd_dict_ptr dict,
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bool no_output_allowed)
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: dict(dict)
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{
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declare('f', &string_ltl_spot);
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declare('s', &string_ltl_spin);
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declare('l', &string_ltl_lbt);
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declare('w', &string_ltl_wring);
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declare('F', &filename_ltl_spot);
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declare('S', &filename_ltl_spin);
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declare('L', &filename_ltl_lbt);
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declare('W', &filename_ltl_wring);
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declare('D', &output);
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declare('H', &output);
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declare('N', &output);
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declare('T', &output);
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declare('O', &output);
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size_t s = translators.size();
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assert(s);
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for (size_t n = 0; n < s; ++n)
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{
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// Check that each translator uses at least one input and
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// one output.
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std::vector<bool> has(256);
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const translator_spec& t = translators[n];
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scan(t.cmd, has);
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if (!(has['f'] || has['s'] || has['l'] || has['w']
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|| has['F'] || has['S'] || has['L'] || has['W']))
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error(2, 0, "no input %%-sequence in '%s'.\n Use "
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"one of %%f,%%s,%%l,%%w,%%F,%%S,%%L,%%W to indicate how "
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"to pass the formula.", t.spec);
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if (!no_output_allowed
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&& !(has['O'] ||
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// backward-compatibility
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has['D'] || has['N'] || has['T'] || has['H']))
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error(2, 0, "no output %%-sequence in '%s'.\n Use "
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"%%O to indicate where the automaton is output.",
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t.spec);
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// Remember the %-sequences used by all translators.
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prime(t.cmd);
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}
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}
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void
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translator_runner::string_to_tmp(std::string& str, unsigned n,
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std::string& tmpname)
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{
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char prefix[30];
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snprintf(prefix, sizeof prefix, "lcr-i%u-", n);
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spot::open_temporary_file* tmpfile = spot::create_open_tmpfile(prefix);
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tmpname = tmpfile->name();
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int fd = tmpfile->fd();
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ssize_t s = str.size();
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if (write(fd, str.c_str(), s) != s
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|| write(fd, "\n", 1) != 1)
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error(2, errno, "failed to write into %s", tmpname.c_str());
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tmpfile->close();
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}
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const std::string&
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translator_runner::formula() const
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{
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// Pick the most readable format we have...
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if (!string_ltl_spot.val().empty())
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return string_ltl_spot;
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if (!string_ltl_spin.val().empty())
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return string_ltl_spin;
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if (!string_ltl_wring.val().empty())
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return string_ltl_wring;
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if (!string_ltl_lbt.val().empty())
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return string_ltl_lbt;
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SPOT_UNREACHABLE();
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return string_ltl_spot;
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}
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void
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translator_runner::round_formula(spot::formula f, unsigned serial)
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{
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if (has('f') || has('F'))
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string_ltl_spot = spot::str_psl(f, true);
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if (has('s') || has('S'))
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string_ltl_spin = spot::str_spin_ltl(f, true);
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if (has('l') || has('L'))
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string_ltl_lbt = spot::str_lbt_ltl(f);
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if (has('w') || has('W'))
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string_ltl_wring = spot::str_wring_ltl(f);
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if (has('F'))
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string_to_tmp(string_ltl_spot, serial, filename_ltl_spot);
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if (has('S'))
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string_to_tmp(string_ltl_spin, serial, filename_ltl_spin);
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if (has('L'))
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string_to_tmp(string_ltl_lbt, serial, filename_ltl_lbt);
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if (has('W'))
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string_to_tmp(string_ltl_wring, serial, filename_ltl_wring);
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}
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volatile bool timed_out = false;
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unsigned timeout_count = 0;
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static unsigned timeout = 0;
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#if ENABLE_TIMEOUT
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static volatile int alarm_on = 0;
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static int child_pid = -1;
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static void
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sig_handler(int sig)
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{
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if (child_pid == 0)
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error(2, 0, "received signal %d before starting child", sig);
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if (sig == SIGALRM && alarm_on)
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{
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timed_out = true;
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if (--alarm_on)
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{
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// Send SIGTERM to children.
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kill(-child_pid, SIGTERM);
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// Try again later if it didn't work. (alarm() will be reset
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// if it did work and the call to wait() returns)
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alarm(2);
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}
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else
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{
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// After a few gentle tries, really kill that child.
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kill(-child_pid, SIGKILL);
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}
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}
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else
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{
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// forward signal
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kill(-child_pid, sig);
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// cleanup files
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spot::cleanup_tmpfiles();
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// and die verbosely
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error(2, 0, "received signal %d", sig);
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}
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}
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void
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setup_sig_handler()
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{
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struct sigaction sa;
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sa.sa_handler = sig_handler;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = SA_RESTART; // So that wait() doesn't get aborted by SIGALRM.
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sigaction(SIGALRM, &sa, nullptr);
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// Catch termination signals, so we can kill the subprocess.
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sigaction(SIGHUP, &sa, nullptr);
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sigaction(SIGINT, &sa, nullptr);
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sigaction(SIGQUIT, &sa, nullptr);
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sigaction(SIGTERM, &sa, nullptr);
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}
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int
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exec_with_timeout(const char* cmd)
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{
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int status;
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timed_out = false;
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child_pid = fork();
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if (child_pid == -1)
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error(2, errno, "failed to fork()");
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if (child_pid == 0)
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{
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setpgid(0, 0);
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execlp("sh", "sh", "-c", cmd, nullptr);
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error(2, errno, "failed to run 'sh'");
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// never reached
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return -1;
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}
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else
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{
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alarm(timeout);
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// Upon SIGALRM, the child will receive up to 3
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// signals: SIGTERM, SIGTERM, SIGKILL.
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alarm_on = 3;
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int w = waitpid(child_pid, &status, 0);
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alarm_on = 0;
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if (w == -1)
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error(2, errno, "error during wait()");
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alarm(0);
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}
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return status;
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}
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#endif // ENABLE_TIMEOUT
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enum {
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OPT_LIST = 1,
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};
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static const argp_option options[] =
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{
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/**************************************************/
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{ nullptr, 0, nullptr, 0, "Specifying translators to call:", 2 },
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{ "translator", 't', "COMMANDFMT", 0,
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"register one translator to call", 0 },
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{ "timeout", 'T', "NUMBER", 0, "kill translators after NUMBER seconds", 0 },
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{ "list-shorthands", OPT_LIST, nullptr, 0,
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"list availabled shorthands to use in COMMANDFMT", 0},
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/**************************************************/
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{ nullptr, 0, nullptr, 0,
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"COMMANDFMT should specify input and output arguments using the "
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"following character sequences:", 3 },
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{ "%f,%s,%l,%w", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
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"the formula as a (quoted) string in Spot, Spin, LBT, or Wring's syntax",
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0 },
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{ "%F,%S,%L,%W", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
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"the formula as a file in Spot, Spin, LBT, or Wring's syntax", 0 },
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{ "%O", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
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"the automaton is output in HOA, never claim, LBTT, or ltl2dstar's "
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"format", 0 },
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{ "%%", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE, "a single %", 0 },
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{ nullptr, 0, nullptr, 0,
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"If either %l, %L, or %T are used, any input formula that does "
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"not use LBT-style atomic propositions (i.e. p0, p1, ...) will be "
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"relabeled automatically.\n"
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"Furthermore, if COMMANDFMT has the form \"{NAME}CMD\", then only CMD "
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"will be passed to the shell, and NAME will be used to name the tool "
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"in the output.", 4 },
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{ nullptr, 0, nullptr, 0, nullptr, 0 }
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};
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static int parse_opt_trans(int key, char* arg, struct argp_state*)
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{
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switch (key)
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{
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case 't':
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translators.push_back(arg);
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break;
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case 'T':
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timeout = to_pos_int(arg);
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#if !ENABLE_TIMEOUT
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std::cerr << "warning: setting a timeout is not supported "
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<< "on your platform" << std::endl;
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#endif
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break;
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case OPT_LIST:
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show_shorthands();
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exit(0);
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default:
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return ARGP_ERR_UNKNOWN;
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}
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return 0;
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}
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const struct argp trans_argp = { options, parse_opt_trans, nullptr, nullptr,
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nullptr, nullptr, nullptr };
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