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free memory in nex_creator during GB init

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-12-16 18:22:21 -10:00
parent 519bbc5af1
commit 580f229a16
3 changed files with 8 additions and 3 deletions
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2
src/math/lp/nex_creator.cpp
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@ -593,7 +593,7 @@ void nex_creator::process_map_pair(nex*e, const rational& coeff, nex_sum & sum,
}
bool e_is_old = allocated_nexs.find(e) != allocated_nexs.end();
if (!e_is_old) {
m_allocated.push_back(e);
add_to_allocated(e);
}
if (e->is_mul()) {
e->to_mul().m_coeff = coeff;

6
src/math/lp/nex_creator.h
View file

@ -155,7 +155,10 @@ public:
const std::unordered_map<lpvar, unsigned>& powers() const { return m_powers; }
std::unordered_map<lpvar, unsigned>& powers() { return m_powers; }
void add_to_allocated(nex* r) { m_allocated.push_back(r); }
void add_to_allocated(nex* r) {
m_allocated.push_back(r);
CTRACE("grobner_stats_d", m_allocated.size() % 1000 == 0, tout << "m_allocated.size() = " << m_allocated.size() << "\n";);
}
// NSB: we can use region allocation, but still need to invoke destructor
// because of 'rational' (and m_children in nex_mul unless we get rid of this)
@ -163,6 +166,7 @@ public:
for (unsigned j = sz; j < m_allocated.size(); j++)
dealloc(m_allocated[j]);
m_allocated.resize(sz);
TRACE("grobner_stats_d", tout << "m_allocated.size() = " << m_allocated.size() << "\n";);
}
void clear() {

3
src/math/lp/nla_grobner.cpp
View file

@ -250,6 +250,7 @@ grobner_core::equation_set const& grobner_core::equations() {
void grobner_core::reset() {
del_equations(0);
m_nex_creator.pop(0);
SASSERT(m_equations_to_delete.empty());
m_to_superpose.reset();
m_to_simplify.reset();
@ -617,7 +618,7 @@ void grobner_core::superpose(equation * eq1, equation * eq2) {
return;
}
equation* eq = alloc(equation);
TRACE("grobner_d", tout << "eq1="; display_equation(tout, *eq1) << "eq2="; display_equation(tout, *eq2););
TRACE("grobner_d", tout << "eq1="; display_equation(tout, *eq1) << "eq2="; display_equation(tout, *eq2););
init_equation(eq, expr_superpose(eq1->expr(), eq2->expr(), ab, ac, b, c), m_dep_manager.mk_join(eq1->dep(), eq2->dep()));
if (m_nex_creator.gt(eq->expr(), eq1->expr()) || m_nex_creator.gt(eq->expr(), eq2->expr()) ||
equation_is_too_complex(eq)) {