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[R-package] use R standard routine to access read-only ints passed to…
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… C++ (#4246)

* [R-package] replace R_AS_INT with R built-in

* update header

* more changes

* Apply suggestions from code review

Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

Co-authored-by: Nikita Titov <nekit94-08@mail.ru>
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@jameslamb @StrikerRUS
jameslamb and StrikerRUS authored May 3, 2021
1 parent d29f2c2 commit aedfdd0
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Showing 3 changed files with 136 additions and 136 deletions.
2 changes: 0 additions & 2 deletions R-package/src/R_object_helper.h
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Original file line number Diff line number Diff line change
Expand Up @@ -102,8 +102,6 @@ typedef union { VECTOR_SER s; double align; } SEXPREC_ALIGN;

#define R_REAL_PTR(x) (reinterpret_cast<double*> DATAPTR(x))

#define R_AS_INT(x) (*(reinterpret_cast<int*> DATAPTR(x)))

#define R_IS_NULL(x) ((*reinterpret_cast<LGBM_SE>(x)).sxpinfo.type == 0)

// 64bit pointer
Expand Down
162 changes: 82 additions & 80 deletions R-package/src/lightgbm_R.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -43,12 +43,12 @@ using LightGBM::Common::Join;
using LightGBM::Common::Split;
using LightGBM::Log;

LGBM_SE EncodeChar(LGBM_SE dest, const char* src, LGBM_SE buf_len, LGBM_SE actual_len, size_t str_len) {
LGBM_SE EncodeChar(LGBM_SE dest, const char* src, SEXP buf_len, LGBM_SE actual_len, size_t str_len) {
if (str_len > INT32_MAX) {
Log::Fatal("Don't support large string in R-package");
}
R_INT_PTR(actual_len)[0] = static_cast<int>(str_len);
if (R_AS_INT(buf_len) < static_cast<int>(str_len)) {
if (Rf_asInteger(buf_len) < static_cast<int>(str_len)) {
return dest;
}
auto ptr = R_CHAR_PTR(dest);
Expand Down Expand Up @@ -79,9 +79,9 @@ SEXP LGBM_DatasetCreateFromFile_R(LGBM_SE filename,
SEXP LGBM_DatasetCreateFromCSC_R(LGBM_SE indptr,
LGBM_SE indices,
LGBM_SE data,
LGBM_SE num_indptr,
LGBM_SE nelem,
LGBM_SE num_row,
SEXP num_indptr,
SEXP nelem,
SEXP num_row,
LGBM_SE parameters,
LGBM_SE reference,
LGBM_SE out) {
Expand All @@ -90,9 +90,9 @@ SEXP LGBM_DatasetCreateFromCSC_R(LGBM_SE indptr,
const int* p_indices = R_INT_PTR(indices);
const double* p_data = R_REAL_PTR(data);

int64_t nindptr = static_cast<int64_t>(R_AS_INT(num_indptr));
int64_t ndata = static_cast<int64_t>(R_AS_INT(nelem));
int64_t nrow = static_cast<int64_t>(R_AS_INT(num_row));
int64_t nindptr = static_cast<int64_t>(Rf_asInteger(num_indptr));
int64_t ndata = static_cast<int64_t>(Rf_asInteger(nelem));
int64_t nrow = static_cast<int64_t>(Rf_asInteger(num_row));
DatasetHandle handle = nullptr;
CHECK_CALL(LGBM_DatasetCreateFromCSC(p_indptr, C_API_DTYPE_INT32, p_indices,
p_data, C_API_DTYPE_FLOAT64, nindptr, ndata,
Expand All @@ -102,14 +102,14 @@ SEXP LGBM_DatasetCreateFromCSC_R(LGBM_SE indptr,
}

SEXP LGBM_DatasetCreateFromMat_R(LGBM_SE data,
LGBM_SE num_row,
LGBM_SE num_col,
SEXP num_row,
SEXP num_col,
LGBM_SE parameters,
LGBM_SE reference,
LGBM_SE out) {
R_API_BEGIN();
int32_t nrow = static_cast<int32_t>(R_AS_INT(num_row));
int32_t ncol = static_cast<int32_t>(R_AS_INT(num_col));
int32_t nrow = static_cast<int32_t>(Rf_asInteger(num_row));
int32_t ncol = static_cast<int32_t>(Rf_asInteger(num_col));
double* p_mat = R_REAL_PTR(data);
DatasetHandle handle = nullptr;
CHECK_CALL(LGBM_DatasetCreateFromMat(p_mat, C_API_DTYPE_FLOAT64, nrow, ncol, COL_MAJOR,
Expand All @@ -120,11 +120,11 @@ SEXP LGBM_DatasetCreateFromMat_R(LGBM_SE data,

SEXP LGBM_DatasetGetSubset_R(LGBM_SE handle,
LGBM_SE used_row_indices,
LGBM_SE len_used_row_indices,
SEXP len_used_row_indices,
LGBM_SE parameters,
LGBM_SE out) {
R_API_BEGIN();
int len = R_AS_INT(len_used_row_indices);
int len = Rf_asInteger(len_used_row_indices);
std::vector<int> idxvec(len);
// convert from one-based to zero-based index
#pragma omp parallel for schedule(static, 512) if (len >= 1024)
Expand Down Expand Up @@ -154,7 +154,7 @@ SEXP LGBM_DatasetSetFeatureNames_R(LGBM_SE handle,
}

SEXP LGBM_DatasetGetFeatureNames_R(LGBM_SE handle,
LGBM_SE buf_len,
SEXP buf_len,
LGBM_SE actual_len,
LGBM_SE feature_names) {
R_API_BEGIN();
Expand Down Expand Up @@ -202,9 +202,9 @@ SEXP LGBM_DatasetFree_R(LGBM_SE handle) {
SEXP LGBM_DatasetSetField_R(LGBM_SE handle,
LGBM_SE field_name,
LGBM_SE field_data,
LGBM_SE num_element) {
SEXP num_element) {
R_API_BEGIN();
int len = static_cast<int>(R_AS_INT(num_element));
int len = static_cast<int>(Rf_asInteger(num_element));
const char* name = R_CHAR_PTR(field_name);
if (!strcmp("group", name) || !strcmp("query", name)) {
std::vector<int32_t> vec(len);
Expand Down Expand Up @@ -387,10 +387,10 @@ SEXP LGBM_BoosterUpdateOneIter_R(LGBM_SE handle) {
SEXP LGBM_BoosterUpdateOneIterCustom_R(LGBM_SE handle,
LGBM_SE grad,
LGBM_SE hess,
LGBM_SE len) {
SEXP len) {
int is_finished = 0;
R_API_BEGIN();
int int_len = R_AS_INT(len);
int int_len = Rf_asInteger(len);
std::vector<float> tgrad(int_len), thess(int_len);
#pragma omp parallel for schedule(static, 512) if (int_len >= 1024)
for (int j = 0; j < int_len; ++j) {
Expand Down Expand Up @@ -433,7 +433,7 @@ SEXP LGBM_BoosterGetLowerBoundValue_R(LGBM_SE handle,
}

SEXP LGBM_BoosterGetEvalNames_R(LGBM_SE handle,
LGBM_SE buf_len,
SEXP buf_len,
LGBM_SE actual_len,
LGBM_SE eval_names) {
R_API_BEGIN();
Expand Down Expand Up @@ -464,83 +464,83 @@ SEXP LGBM_BoosterGetEvalNames_R(LGBM_SE handle,
}

SEXP LGBM_BoosterGetEval_R(LGBM_SE handle,
LGBM_SE data_idx,
SEXP data_idx,
LGBM_SE out_result) {
R_API_BEGIN();
int len;
CHECK_CALL(LGBM_BoosterGetEvalCounts(R_GET_PTR(handle), &len));
double* ptr_ret = R_REAL_PTR(out_result);
int out_len;
CHECK_CALL(LGBM_BoosterGetEval(R_GET_PTR(handle), R_AS_INT(data_idx), &out_len, ptr_ret));
CHECK_CALL(LGBM_BoosterGetEval(R_GET_PTR(handle), Rf_asInteger(data_idx), &out_len, ptr_ret));
CHECK_EQ(out_len, len);
R_API_END();
}

SEXP LGBM_BoosterGetNumPredict_R(LGBM_SE handle,
LGBM_SE data_idx,
SEXP data_idx,
LGBM_SE out) {
R_API_BEGIN();
int64_t len;
CHECK_CALL(LGBM_BoosterGetNumPredict(R_GET_PTR(handle), R_AS_INT(data_idx), &len));
CHECK_CALL(LGBM_BoosterGetNumPredict(R_GET_PTR(handle), Rf_asInteger(data_idx), &len));
R_INT_PTR(out)[0] = static_cast<int>(len);
R_API_END();
}

SEXP LGBM_BoosterGetPredict_R(LGBM_SE handle,
LGBM_SE data_idx,
SEXP data_idx,
LGBM_SE out_result) {
R_API_BEGIN();
double* ptr_ret = R_REAL_PTR(out_result);
int64_t out_len;
CHECK_CALL(LGBM_BoosterGetPredict(R_GET_PTR(handle), R_AS_INT(data_idx), &out_len, ptr_ret));
CHECK_CALL(LGBM_BoosterGetPredict(R_GET_PTR(handle), Rf_asInteger(data_idx), &out_len, ptr_ret));
R_API_END();
}

int GetPredictType(LGBM_SE is_rawscore, LGBM_SE is_leafidx, LGBM_SE is_predcontrib) {
int GetPredictType(SEXP is_rawscore, SEXP is_leafidx, SEXP is_predcontrib) {
int pred_type = C_API_PREDICT_NORMAL;
if (R_AS_INT(is_rawscore)) {
if (Rf_asInteger(is_rawscore)) {
pred_type = C_API_PREDICT_RAW_SCORE;
}
if (R_AS_INT(is_leafidx)) {
if (Rf_asInteger(is_leafidx)) {
pred_type = C_API_PREDICT_LEAF_INDEX;
}
if (R_AS_INT(is_predcontrib)) {
if (Rf_asInteger(is_predcontrib)) {
pred_type = C_API_PREDICT_CONTRIB;
}
return pred_type;
}

SEXP LGBM_BoosterPredictForFile_R(LGBM_SE handle,
LGBM_SE data_filename,
LGBM_SE data_has_header,
LGBM_SE is_rawscore,
LGBM_SE is_leafidx,
LGBM_SE is_predcontrib,
LGBM_SE start_iteration,
LGBM_SE num_iteration,
SEXP data_has_header,
SEXP is_rawscore,
SEXP is_leafidx,
SEXP is_predcontrib,
SEXP start_iteration,
SEXP num_iteration,
LGBM_SE parameter,
LGBM_SE result_filename) {
R_API_BEGIN();
int pred_type = GetPredictType(is_rawscore, is_leafidx, is_predcontrib);
CHECK_CALL(LGBM_BoosterPredictForFile(R_GET_PTR(handle), R_CHAR_PTR(data_filename),
R_AS_INT(data_has_header), pred_type, R_AS_INT(start_iteration), R_AS_INT(num_iteration), R_CHAR_PTR(parameter),
Rf_asInteger(data_has_header), pred_type, Rf_asInteger(start_iteration), Rf_asInteger(num_iteration), R_CHAR_PTR(parameter),
R_CHAR_PTR(result_filename)));
R_API_END();
}

SEXP LGBM_BoosterCalcNumPredict_R(LGBM_SE handle,
LGBM_SE num_row,
LGBM_SE is_rawscore,
LGBM_SE is_leafidx,
LGBM_SE is_predcontrib,
LGBM_SE start_iteration,
LGBM_SE num_iteration,
SEXP num_row,
SEXP is_rawscore,
SEXP is_leafidx,
SEXP is_predcontrib,
SEXP start_iteration,
SEXP num_iteration,
LGBM_SE out_len) {
R_API_BEGIN();
int pred_type = GetPredictType(is_rawscore, is_leafidx, is_predcontrib);
int64_t len = 0;
CHECK_CALL(LGBM_BoosterCalcNumPredict(R_GET_PTR(handle), R_AS_INT(num_row),
pred_type, R_AS_INT(start_iteration), R_AS_INT(num_iteration), &len));
CHECK_CALL(LGBM_BoosterCalcNumPredict(R_GET_PTR(handle), Rf_asInteger(num_row),
pred_type, Rf_asInteger(start_iteration), Rf_asInteger(num_iteration), &len));
R_INT_PTR(out_len)[0] = static_cast<int>(len);
R_API_END();
}
Expand All @@ -549,14 +549,14 @@ SEXP LGBM_BoosterPredictForCSC_R(LGBM_SE handle,
LGBM_SE indptr,
LGBM_SE indices,
LGBM_SE data,
LGBM_SE num_indptr,
LGBM_SE nelem,
LGBM_SE num_row,
LGBM_SE is_rawscore,
LGBM_SE is_leafidx,
LGBM_SE is_predcontrib,
LGBM_SE start_iteration,
LGBM_SE num_iteration,
SEXP num_indptr,
SEXP nelem,
SEXP num_row,
SEXP is_rawscore,
SEXP is_leafidx,
SEXP is_predcontrib,
SEXP start_iteration,
SEXP num_iteration,
LGBM_SE parameter,
LGBM_SE out_result) {
R_API_BEGIN();
Expand All @@ -566,78 +566,80 @@ SEXP LGBM_BoosterPredictForCSC_R(LGBM_SE handle,
const int* p_indices = R_INT_PTR(indices);
const double* p_data = R_REAL_PTR(data);

int64_t nindptr = R_AS_INT(num_indptr);
int64_t ndata = R_AS_INT(nelem);
int64_t nrow = R_AS_INT(num_row);
int64_t nindptr = Rf_asInteger(num_indptr);
int64_t ndata = Rf_asInteger(nelem);
int64_t nrow = Rf_asInteger(num_row);
double* ptr_ret = R_REAL_PTR(out_result);
int64_t out_len;
CHECK_CALL(LGBM_BoosterPredictForCSC(R_GET_PTR(handle),
p_indptr, C_API_DTYPE_INT32, p_indices,
p_data, C_API_DTYPE_FLOAT64, nindptr, ndata,
nrow, pred_type, R_AS_INT(start_iteration), R_AS_INT(num_iteration), R_CHAR_PTR(parameter), &out_len, ptr_ret));
nrow, pred_type, Rf_asInteger(start_iteration), Rf_asInteger(num_iteration), R_CHAR_PTR(parameter), &out_len, ptr_ret));
R_API_END();
}

SEXP LGBM_BoosterPredictForMat_R(LGBM_SE handle,
LGBM_SE data,
LGBM_SE num_row,
LGBM_SE num_col,
LGBM_SE is_rawscore,
LGBM_SE is_leafidx,
LGBM_SE is_predcontrib,
LGBM_SE start_iteration,
LGBM_SE num_iteration,
SEXP num_row,
SEXP num_col,
SEXP is_rawscore,
SEXP is_leafidx,
SEXP is_predcontrib,
SEXP start_iteration,
SEXP num_iteration,
LGBM_SE parameter,
LGBM_SE out_result) {
R_API_BEGIN();
int pred_type = GetPredictType(is_rawscore, is_leafidx, is_predcontrib);

int32_t nrow = R_AS_INT(num_row);
int32_t ncol = R_AS_INT(num_col);
int32_t nrow = Rf_asInteger(num_row);
int32_t ncol = Rf_asInteger(num_col);

const double* p_mat = R_REAL_PTR(data);
double* ptr_ret = R_REAL_PTR(out_result);
int64_t out_len;
CHECK_CALL(LGBM_BoosterPredictForMat(R_GET_PTR(handle),
p_mat, C_API_DTYPE_FLOAT64, nrow, ncol, COL_MAJOR,
pred_type, R_AS_INT(start_iteration), R_AS_INT(num_iteration), R_CHAR_PTR(parameter), &out_len, ptr_ret));
pred_type, Rf_asInteger(start_iteration), Rf_asInteger(num_iteration), R_CHAR_PTR(parameter), &out_len, ptr_ret));

R_API_END();
}

SEXP LGBM_BoosterSaveModel_R(LGBM_SE handle,
LGBM_SE num_iteration,
LGBM_SE feature_importance_type,
SEXP num_iteration,
SEXP feature_importance_type,
LGBM_SE filename) {
R_API_BEGIN();
CHECK_CALL(LGBM_BoosterSaveModel(R_GET_PTR(handle), 0, R_AS_INT(num_iteration), R_AS_INT(feature_importance_type), R_CHAR_PTR(filename)));
CHECK_CALL(LGBM_BoosterSaveModel(R_GET_PTR(handle), 0, Rf_asInteger(num_iteration), Rf_asInteger(feature_importance_type), R_CHAR_PTR(filename)));
R_API_END();
}

SEXP LGBM_BoosterSaveModelToString_R(LGBM_SE handle,
LGBM_SE num_iteration,
LGBM_SE feature_importance_type,
LGBM_SE buffer_len,
SEXP num_iteration,
SEXP feature_importance_type,
SEXP buffer_len,
LGBM_SE actual_len,
LGBM_SE out_str) {
R_API_BEGIN();
int64_t out_len = 0;
std::vector<char> inner_char_buf(R_AS_INT(buffer_len));
CHECK_CALL(LGBM_BoosterSaveModelToString(R_GET_PTR(handle), 0, R_AS_INT(num_iteration), R_AS_INT(feature_importance_type), R_AS_INT(buffer_len), &out_len, inner_char_buf.data()));
int64_t buf_len = static_cast<int64_t>(Rf_asInteger(buffer_len));
std::vector<char> inner_char_buf(buf_len);
CHECK_CALL(LGBM_BoosterSaveModelToString(R_GET_PTR(handle), 0, Rf_asInteger(num_iteration), Rf_asInteger(feature_importance_type), buf_len, &out_len, inner_char_buf.data()));
EncodeChar(out_str, inner_char_buf.data(), buffer_len, actual_len, static_cast<size_t>(out_len));
R_API_END();
}

SEXP LGBM_BoosterDumpModel_R(LGBM_SE handle,
LGBM_SE num_iteration,
LGBM_SE feature_importance_type,
LGBM_SE buffer_len,
SEXP num_iteration,
SEXP feature_importance_type,
SEXP buffer_len,
LGBM_SE actual_len,
LGBM_SE out_str) {
R_API_BEGIN();
int64_t out_len = 0;
std::vector<char> inner_char_buf(R_AS_INT(buffer_len));
CHECK_CALL(LGBM_BoosterDumpModel(R_GET_PTR(handle), 0, R_AS_INT(num_iteration), R_AS_INT(feature_importance_type), R_AS_INT(buffer_len), &out_len, inner_char_buf.data()));
int64_t buf_len = static_cast<int64_t>(Rf_asInteger(buffer_len));
std::vector<char> inner_char_buf(buf_len);
CHECK_CALL(LGBM_BoosterDumpModel(R_GET_PTR(handle), 0, Rf_asInteger(num_iteration), Rf_asInteger(feature_importance_type), buf_len, &out_len, inner_char_buf.data()));
EncodeChar(out_str, inner_char_buf.data(), buffer_len, actual_len, static_cast<size_t>(out_len));
R_API_END();
}
Expand Down
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