/*
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* Copyright (c) 2015 PLUMgrid, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <cstdio>
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#include <string>
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namespace ebpf {
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class StatusTuple {
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public:
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StatusTuple(int ret) : ret_(ret) {}
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StatusTuple(int ret, const char *msg) : ret_(ret), msg_(msg) {}
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StatusTuple(int ret, const std::string &msg) : ret_(ret), msg_(msg) {}
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template <typename... Args>
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StatusTuple(int ret, const char *fmt, Args... args) : ret_(ret) {
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char buf[2048];
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snprintf(buf, sizeof(buf), fmt, args...);
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msg_ = std::string(buf);
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}
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void append_msg(const std::string& msg) {
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msg_ += msg;
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}
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int code() { return ret_; }
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std::string msg() { return msg_; }
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private:
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int ret_;
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std::string msg_;
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};
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#define TRY2(CMD) \
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do { \
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StatusTuple __stp = (CMD); \
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if (__stp.code() != 0) { \
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return __stp; \
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} \
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} while (0)
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} // namespace ebpf
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