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change pool solver to enable external control of pool allocation

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-05-15 07:40:37 -07:00 • committed by Arie Gurfinkel
parent ffdefa4f65
commit b649cd93cb
5 changed files with 73 additions and 28 deletions
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21
src/solver/solver_pool.h
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@ -18,11 +18,20 @@ Notes:
This is a revision of spacer_virtual_solver by Arie Gurfinkel
it is not quite the same + there are good reasons to do that management at a higher level.
not the same == in spacer, there is an upper bound on the number of base solvers (i.e., number of pools).
Then the pools are distributed between different predicate transformers. I can't just switch to solver_pool,
since this, in most configuration, will result in either few solvers (which is bad for most of my benchmarks),
or one solver per predicate transformer (which is bad for a few benchmarks with many predicates).
--*/
#ifndef SOLVER_POOL_H_
#define SOLVER_POOL_H_
#include "solver/solver.h"
#include "solver/solver_na2as.h"
#include "util/stopwatch.h"
class pool_solver;
@ -39,11 +48,9 @@ class solver_pool {
void reset() { memset(this, 0, sizeof(*this)); }
};
ref<solver> m_base_solver;
unsigned m_num_solvers_per_pool;
unsigned m_num_solvers_in_last_pool;
ref<solver> m_base_solver;
sref_vector<solver> m_solvers;
stats m_stats;
stats m_stats;
stopwatch m_check_watch;
stopwatch m_check_sat_watch;
@ -55,13 +62,17 @@ class solver_pool {
ptr_vector<solver> get_base_solvers() const;
public:
solver_pool(solver* base_solver, unsigned num_solvers_per_pool);
solver_pool(solver* base_solver);
void collect_statistics(statistics &st) const;
void reset_statistics();
// create a fresh pool solver
solver* mk_solver();
// clone an existing pool solver
solver* clone_solver(solver* pool_solver);
void reset_solver(solver* s);
};