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get rid of timeb dependencies, pull request #1040

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-05-23 12:16:43 -07:00
parent edb164587f
commit 23ff580a67
6 changed files with 88 additions and 110 deletions
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4
src/util/lp/lp_primal_simplex.h
View file

@ -55,10 +55,6 @@ public:
void set_core_solver_bounds();
void update_time_limit_from_starting_time(int start_time) {
this->m_settings.time_limit -= (get_millisecond_span(start_time) / 1000.);
}
void find_maximal_solution();
void fill_A_x_and_basis_for_stage_one_total_inf();

2
src/util/lp/lp_primal_simplex.hpp
View file

@ -152,7 +152,6 @@ template <typename T, typename X> void lp_primal_simplex<T, X>::set_core_solver_
template <typename T, typename X> void lp_primal_simplex<T, X>::find_maximal_solution() {
int preprocessing_start_time = get_millisecond_count();
if (this->problem_is_empty()) {
this->m_status = lp_status::EMPTY;
return;
@ -169,7 +168,6 @@ template <typename T, typename X> void lp_primal_simplex<T, X>::find_maximal_sol
fill_acceptable_values_for_x();
this->count_slacks_and_artificials();
set_core_solver_bounds();
update_time_limit_from_starting_time(preprocessing_start_time);
solve_with_total_inf();
}

15
src/util/lp/lp_settings.h
View file

@ -8,9 +8,9 @@
#include <string>
#include <algorithm>
#include <limits>
#include <sys/timeb.h>
#include <iomanip>
#include "util/lp/lp_utils.h"
#include "util/stopwatch.h"
namespace lean {
typedef unsigned var_index;
@ -69,10 +69,6 @@ enum non_basic_column_value_position { at_low_bound, at_upper_bound, at_fixed, f
template <typename X> bool is_epsilon_small(const X & v, const double& eps); // forward definition
int get_millisecond_count();
int get_millisecond_span(int start_time);
class lp_resource_limit {
public:
virtual bool get_cancel_flag() = 0;
@ -92,12 +88,13 @@ struct lp_settings {
private:
class default_lp_resource_limit : public lp_resource_limit {
lp_settings& m_settings;
int m_start_time;
stopwatch m_sw;
public:
default_lp_resource_limit(lp_settings& s): m_settings(s), m_start_time(get_millisecond_count()) {}
default_lp_resource_limit(lp_settings& s): m_settings(s) {
m_sw.start();
}
virtual bool get_cancel_flag() {
int span_in_mills = get_millisecond_span(m_start_time);
return (span_in_mills / 1000.0 > m_settings.time_limit);
return (m_sw.get_current_seconds() > m_settings.time_limit);
}
};

13
src/util/lp/lp_settings.hpp
View file

@ -52,19 +52,6 @@ lp_status lp_status_from_string(std::string status) {
lean_unreachable();
return lp_status::UNKNOWN; // it is unreachable
}
int get_millisecond_count() {
timeb tb;
ftime(&tb);
return tb.millitm + (tb.time & 0xfffff) * 1000;
}
int get_millisecond_span(int start_time) {
int span = get_millisecond_count() - start_time;
if (span < 0)
span += 0x100000 * 1000;
return span;
}
template <typename T>

6
src/util/lp/sparse_matrix.hpp
View file

@ -1050,8 +1050,8 @@ bool sparse_matrix<T, X>::get_pivot_for_column(unsigned &i, unsigned &j, int c_p
if (i_inv < k) continue;
unsigned j_inv = adjust_column_inverse(j);
if (j_inv < k) continue;
int small = elem_is_too_small(i, j, c_partial_pivoting);
if (!small) {
int _small = elem_is_too_small(i, j, c_partial_pivoting);
if (!_small) {
#ifdef LEAN_DEBUG
// if (!really_best_pivot(i, j, c_partial_pivoting, k)) {
// print_active_matrix(k);
@ -1063,7 +1063,7 @@ bool sparse_matrix<T, X>::get_pivot_for_column(unsigned &i, unsigned &j, int c_p
j = j_inv;
return true;
}
if (small != 2) { // 2 means that the pair is not in the matrix
if (_small != 2) { // 2 means that the pair is not in the matrix
pivots_candidates_that_are_too_small.push_back(std::make_pair(i, j));
}
}