Commit 9775dfdd authored by Alexandre Duret-Lutz's avatar Alexandre Duret-Lutz

Hide the only use of bdd_allocator.

* src/tgba/bdddict.cc, src/tgba/bdddict.hh:  Hide the bdd_allocator
dependency in a bdd_dict_priv class that is not defined publicly.
parent 1581a94c
// -*- coding: utf-8 -*-
// Copyright (C) 2009, 2012 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
// Copyright (C) 2009, 2012, 2013 Laboratoire de Recherche et
// Développement de l'Epita (LRDE).
// Copyright (C) 2003, 2004, 2005, 2006 Laboratoire d'Informatique de
// Paris 6 (LIP6), département Systèmes Répartis Coopératifs (SRC),
// Université Pierre et Marie Curie.
......@@ -27,17 +27,68 @@
#include <ltlvisit/tostring.hh>
#include <ltlast/atomic_prop.hh>
#include <ltlenv/defaultenv.hh>
#include "misc/bddalloc.hh"
#include "bdddict.hh"
namespace spot
{
// Empty anonymous namespace so that the style checker does no
// complain about bdd_dict_priv (which should not be in an anonymous
// namespace).
namespace
{
}
class bdd_dict_priv: public bdd_allocator
{
public:
class anon_free_list : public spot::free_list
{
public:
// WARNING: We need a default constructor so this can be used in
// a hash; but we should ensure that no object in the hash is
// constructed with p==0.
anon_free_list(bdd_dict_priv* p = 0)
: priv_(p)
{
}
virtual int
extend(int n)
{
assert(priv_);
int b = priv_->allocate_variables(n);
free_anonymous_list_of_type::iterator i;
for (i = priv_->free_anonymous_list_of.begin();
i != priv_->free_anonymous_list_of.end(); ++i)
if (&i->second != this)
i->second.insert(b, n);
return b;
}
private:
bdd_dict_priv* priv_;
};
bdd_dict_priv()
{
free_anonymous_list_of[0] = anon_free_list(this);
}
/// List of unused anonymous variable number for each automaton.
typedef std::map<const void*, anon_free_list> free_anonymous_list_of_type;
free_anonymous_list_of_type free_anonymous_list_of;
};
bdd_dict::bdd_dict()
: bdd_allocator(),
// Initialize priv_ first, because it also initializes BuDDy
: priv_(new bdd_dict_priv()),
bdd_map(bdd_varnum()),
next_to_now(bdd_newpair()),
now_to_next(bdd_newpair())
{
free_anonymous_list_of[0] = anon_free_list(this);
}
bdd_dict::~bdd_dict()
......@@ -45,6 +96,7 @@ namespace spot
assert_emptiness();
bdd_freepair(next_to_now);
bdd_freepair(now_to_next);
delete priv_;
}
int
......@@ -60,7 +112,7 @@ namespace spot
else
{
f = f->clone();
num = allocate_variables(1);
num = priv_->allocate_variables(1);
var_map[f] = num;
bdd_map.resize(bdd_varnum());
bdd_map[num].type = var;
......@@ -99,7 +151,7 @@ namespace spot
else
{
f = f->clone();
num = allocate_variables(2);
num = priv_->allocate_variables(2);
now_map[f] = num;
bdd_map.resize(bdd_varnum());
bdd_map[num].type = now;
......@@ -129,7 +181,7 @@ namespace spot
else
{
f = f->clone();
num = allocate_variables(1);
num = priv_->allocate_variables(1);
acc_map[f] = num;
bdd_map.resize(bdd_varnum());
bdd_info& i = bdd_map[num];
......@@ -199,14 +251,14 @@ namespace spot
int
bdd_dict::register_anonymous_variables(int n, const void* for_me)
{
free_anonymous_list_of_type::iterator i =
free_anonymous_list_of.find(for_me);
typedef bdd_dict_priv::free_anonymous_list_of_type fal;
fal::iterator i = priv_->free_anonymous_list_of.find(for_me);
if (i == free_anonymous_list_of.end())
if (i == priv_->free_anonymous_list_of.end())
{
typedef free_anonymous_list_of_type fal;
i = (free_anonymous_list_of.insert
(fal::value_type(for_me, free_anonymous_list_of[0]))).first;
i = (priv_->free_anonymous_list_of.insert
(fal::value_type(for_me,
priv_->free_anonymous_list_of[0]))).first;
}
int res = i->second.register_n(n);
......@@ -234,10 +286,10 @@ namespace spot
s.insert(for_me);
}
free_anonymous_list_of_type::const_iterator j =
free_anonymous_list_of.find(from_other);
if (j != free_anonymous_list_of.end())
free_anonymous_list_of[for_me] = j->second;
bdd_dict_priv::free_anonymous_list_of_type::const_iterator j =
priv_->free_anonymous_list_of.find(from_other);
if (j != priv_->free_anonymous_list_of.end())
priv_->free_anonymous_list_of[for_me] = j->second;
}
void
......@@ -256,7 +308,7 @@ namespace spot
// If var is anonymous, we should reinsert it into the free list
// of ME's anonymous variables.
if (bdd_map[v].type == anon)
free_anonymous_list_of[me].release_n(v, 1);
priv_->free_anonymous_list_of[me].release_n(v, 1);
if (!s.empty())
return;
......@@ -287,19 +339,19 @@ namespace spot
break;
case anon:
{
free_anonymous_list_of_type::iterator i;
bdd_dict_priv::free_anonymous_list_of_type::iterator i;
// Nobody use this variable as an anonymous variable
// anymore, so remove it entirely from the anonymous
// free list so it can be used for something else.
for (i = free_anonymous_list_of.begin();
i != free_anonymous_list_of.end(); ++i)
for (i = priv_->free_anonymous_list_of.begin();
i != priv_->free_anonymous_list_of.end(); ++i)
i->second.remove(v, n);
break;
}
}
// Actually release the associated BDD variables, and the
// formula itself.
release_variables(v, n);
priv_->release_variables(v, n);
if (f)
f->destroy();
while (n--)
......@@ -312,7 +364,7 @@ namespace spot
unsigned s = bdd_map.size();
for (unsigned i = 0; i < s; ++i)
unregister_variable(i, me);
free_anonymous_list_of.erase(me);
priv_->free_anonymous_list_of.erase(me);
}
void
......@@ -323,7 +375,7 @@ namespace spot
if (bdd_map[i].type == type)
unregister_variable(i, me);
if (type == anon)
free_anonymous_list_of.erase(me);
priv_->free_anonymous_list_of.erase(me);
}
bool
......@@ -395,15 +447,15 @@ namespace spot
os << "\n";
}
os << "Anonymous lists:\n";
free_anonymous_list_of_type::const_iterator ai;
for (ai = free_anonymous_list_of.begin();
ai != free_anonymous_list_of.end(); ++ai)
bdd_dict_priv::free_anonymous_list_of_type::const_iterator ai;
for (ai = priv_->free_anonymous_list_of.begin();
ai != priv_->free_anonymous_list_of.end(); ++ai)
{
os << " [" << ai->first << "] ";
ai->second.dump_free_list(os) << std::endl;
}
os << "Free list:\n";
dump_free_list(os);
priv_->dump_free_list(os);
os << std::endl;
return os;
}
......@@ -481,23 +533,5 @@ namespace spot
}
bdd_dict::anon_free_list::anon_free_list(bdd_dict* d)
: dict_(d)
{
}
int
bdd_dict::anon_free_list::extend(int n)
{
assert(dict_);
int b = dict_->allocate_variables(n);
free_anonymous_list_of_type::iterator i;
for (i = dict_->free_anonymous_list_of.begin();
i != dict_->free_anonymous_list_of.end(); ++i)
if (&i->second != this)
i->second.insert(b, n);
return b;
}
}
......@@ -30,10 +30,11 @@
#include <bdd.h>
#include <vector>
#include "ltlast/formula.hh"
#include "misc/bddalloc.hh"
namespace spot
{
/// \brief Private data for bdd_dict.
class bdd_dict_priv;
/// \ingroup tgba_essentials
/// \brief Map BDD variables to formulae.
......@@ -53,8 +54,9 @@ namespace spot
/// unregister_all_my_variables(), giving the same pointer.
/// Variables can also by unregistered one by one using
/// unregister_variable().
class bdd_dict: public bdd_allocator
class bdd_dict
{
bdd_dict_priv* priv_;
public:
bdd_dict();
......@@ -235,27 +237,6 @@ namespace spot
/// unregister_all_my_variables().
void assert_emptiness() const;
protected:
// SWIG does not grok the following definition, no idea why.
// It's not important for the Python interface anyway.
#ifndef SWIG
class anon_free_list : public spot::free_list
{
public:
// WARNING: We need a default constructor so this can be used in
// a hash; but we should ensure that no object in the hash is
// constructed with d==0.
anon_free_list(bdd_dict* d = 0);
virtual int extend(int n);
private:
bdd_dict* dict_;
};
#endif
/// List of unused anonymous variable number for each automaton.
typedef std::map<const void*, anon_free_list> free_anonymous_list_of_type;
free_anonymous_list_of_type free_anonymous_list_of;
private:
// Disallow copy.
bdd_dict(const bdd_dict& other);
......
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