milvus/sdk/interface/Status.cpp
yukun 79957330d7 Put C++ sdk out of milvus/core (#785)
* Put C++ sdk out of milvus/core

* Delete core/src/sdk

* Add clang-format for c++ sdk

* Add README.md for sdk

* Server unittest run failed on low-end server

* set gpu_cache_capacity to 1G
2019-12-20 14:08:45 +08:00

105 lines
2.5 KiB
C++

// 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 "Status.h"
#include <cstring>
namespace milvus {
constexpr int CODE_WIDTH = sizeof(StatusCode);
Status::Status(StatusCode code, const std::string& msg) {
// 4 bytes store code
// 4 bytes store message length
// the left bytes store message string
const uint32_t length = (uint32_t)msg.size();
auto result = new char[length + sizeof(length) + CODE_WIDTH];
memcpy(result, &code, CODE_WIDTH);
memcpy(result + CODE_WIDTH, &length, sizeof(length));
memcpy(result + sizeof(length) + CODE_WIDTH, msg.data(), length);
state_ = result;
}
Status::Status() : state_(nullptr) {
}
Status::~Status() {
delete state_;
}
Status::Status(const Status& s) : state_(nullptr) {
CopyFrom(s);
}
Status&
Status::operator=(const Status& s) {
CopyFrom(s);
return *this;
}
Status::Status(Status&& s) : state_(nullptr) {
MoveFrom(s);
}
Status&
Status::operator=(Status&& s) {
MoveFrom(s);
return *this;
}
void
Status::CopyFrom(const Status& s) {
delete state_;
state_ = nullptr;
if (s.state_ == nullptr) {
return;
}
uint32_t length = 0;
memcpy(&length, s.state_ + CODE_WIDTH, sizeof(length));
int buff_len = length + sizeof(length) + CODE_WIDTH;
state_ = new char[buff_len];
memcpy(state_, s.state_, buff_len);
}
void
Status::MoveFrom(Status& s) {
delete state_;
state_ = s.state_;
s.state_ = nullptr;
}
std::string
Status::message() const {
if (state_ == nullptr) {
return "OK";
}
std::string msg;
uint32_t length = 0;
memcpy(&length, state_ + CODE_WIDTH, sizeof(length));
if (length > 0) {
msg.append(state_ + sizeof(length) + CODE_WIDTH, length);
}
return msg;
}
} // namespace milvus