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118 lines (97 loc) · 3.26 KB
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 "arrow/python/common.h"
#include <cstdlib>
#include <mutex>
#include <sstream>
#include "arrow/memory_pool.h"
#include "arrow/status.h"
#include "arrow/util/logging.h"
namespace arrow {
namespace py {
static std::mutex memory_pool_mutex;
static MemoryPool* default_python_pool = nullptr;
void set_default_memory_pool(MemoryPool* pool) {
std::lock_guard<std::mutex> guard(memory_pool_mutex);
default_python_pool = pool;
}
MemoryPool* get_memory_pool() {
std::lock_guard<std::mutex> guard(memory_pool_mutex);
if (default_python_pool) {
return default_python_pool;
} else {
return default_memory_pool();
}
}
// ----------------------------------------------------------------------
// PyBuffer
PyBuffer::PyBuffer() : Buffer(nullptr, 0) {}
Status PyBuffer::Init(PyObject* obj) {
if (!PyObject_GetBuffer(obj, &py_buf_, PyBUF_ANY_CONTIGUOUS)) {
data_ = reinterpret_cast<const uint8_t*>(py_buf_.buf);
DCHECK(data_ != nullptr);
size_ = py_buf_.len;
capacity_ = py_buf_.len;
is_mutable_ = !py_buf_.readonly;
return Status::OK();
} else {
return Status(StatusCode::PythonError, "");
}
}
Status PyBuffer::FromPyObject(PyObject* obj, std::shared_ptr<Buffer>* out) {
PyBuffer* buf = new PyBuffer();
std::shared_ptr<Buffer> res(buf);
RETURN_NOT_OK(buf->Init(obj));
*out = res;
return Status::OK();
}
PyBuffer::~PyBuffer() {
if (data_ != nullptr) {
PyAcquireGIL lock;
PyBuffer_Release(&py_buf_);
}
}
// ----------------------------------------------------------------------
// Python exception -> Status
Status CheckPyError(StatusCode code) {
if (PyErr_Occurred()) {
PyObject* exc_type = nullptr;
PyObject* exc_value = nullptr;
PyObject* traceback = nullptr;
OwnedRef exc_type_ref(exc_type);
OwnedRef exc_value_ref(exc_value);
OwnedRef traceback_ref(traceback);
PyErr_Fetch(&exc_type, &exc_value, &traceback);
PyErr_NormalizeException(&exc_type, &exc_value, &traceback);
OwnedRef exc_value_str(PyObject_Str(exc_value));
PyObjectStringify stringified(exc_value_str.obj());
std::string message(stringified.bytes);
PyErr_Clear();
return Status(code, message);
}
return Status::OK();
}
Status PassPyError() {
if (PyErr_Occurred()) {
// Do not call PyErr_Clear, the assumption is that someone further
// up the call stack will want to deal with the Python error.
return Status(StatusCode::PythonError, "");
}
return Status::OK();
}
} // namespace py
} // namespace arrow