85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
// Copyright 2010-2025 Google LLC
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "ortools/sat/c_api/cp_solver_c.h"
|
|
|
|
#include <string>
|
|
|
|
#include "absl/log/check.h"
|
|
#include "ortools/base/memutil.h"
|
|
#include "ortools/sat/cp_model.pb.h"
|
|
#include "ortools/sat/cp_model_solver.h"
|
|
#include "ortools/sat/model.h"
|
|
#include "ortools/sat/sat_parameters.pb.h"
|
|
#include "ortools/sat/util.h"
|
|
|
|
namespace operations_research::sat {
|
|
namespace {
|
|
|
|
struct CpSatEnv {
|
|
CpSatEnv() : shared_time_limit(model.GetOrCreate<ModelSharedTimeLimit>()) {}
|
|
void StopSearch() { shared_time_limit->Stop(); }
|
|
|
|
Model model;
|
|
ModelSharedTimeLimit* shared_time_limit;
|
|
};
|
|
|
|
} // namespace
|
|
} // namespace operations_research::sat
|
|
|
|
extern "C" {
|
|
|
|
void SolveCpModelWithParameters(const void* creq, int creq_len,
|
|
const void* cparams, int cparams_len,
|
|
void** cres, int* cres_len) {
|
|
operations_research::sat::CpSatEnv env;
|
|
SolveCpInterruptible(&env, creq, creq_len, cparams, cparams_len, cres,
|
|
cres_len);
|
|
}
|
|
|
|
void* SolveCpNewEnv() { return new operations_research::sat::CpSatEnv(); }
|
|
|
|
void SolveCpDestroyEnv(void* const cenv) {
|
|
delete static_cast<operations_research::sat::CpSatEnv*>(cenv);
|
|
}
|
|
|
|
void SolveCpStopSearch(void* cenv) {
|
|
static_cast<operations_research::sat::CpSatEnv*>(cenv)->StopSearch();
|
|
}
|
|
|
|
void SolveCpInterruptible(void* const cenv, const void* creq, int creq_len,
|
|
const void* cparams, int cparams_len, void** cres,
|
|
int* cres_len) {
|
|
operations_research::sat::CpModelProto req;
|
|
CHECK(req.ParseFromArray(creq, creq_len));
|
|
|
|
operations_research::sat::SatParameters params;
|
|
CHECK(params.ParseFromArray(cparams, cparams_len));
|
|
|
|
operations_research::sat::CpSatEnv* env =
|
|
static_cast<operations_research::sat::CpSatEnv*>(cenv);
|
|
|
|
env->model.Add(NewSatParameters(params));
|
|
operations_research::sat::CpSolverResponse res =
|
|
SolveCpModel(req, &env->model);
|
|
|
|
std::string res_str;
|
|
CHECK(res.SerializeToString(&res_str));
|
|
|
|
*cres_len = static_cast<int>(res_str.size());
|
|
*cres = strings::memdup(res_str.data(), *cres_len);
|
|
CHECK(*cres != nullptr);
|
|
}
|
|
|
|
} // extern "C"
|