errno_to_str.h

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/*
 * Copyright (c) 2015 Roc Streaming authors
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
//! @file roc_core/target_posix/roc_core/errno_to_str.h
//! @brief Convert errno to string.
 
#ifndef ROC_CORE_ERRNO_TO_STR_H_
#define ROC_CORE_ERRNO_TO_STR_H_
 
#include "roc_core/noncopyable.h"
 
namespace roc {
namespace core {
 
//! Convert errno to string.
//! @remarks
//!  Uses strerror_r(), which is thread-safe unlike strerror().
class errno_to_str : public NonCopyable<> {
public:
    //! Construct from errno.
    errno_to_str();
 
    //! Construct from custom error code.
    explicit errno_to_str(int err);
 
    //! Get error message.
    const char* c_str() const {
        return buffer_;
    }
 
private:
    void format_(int err);
 
    char buffer_[96];
};
 
} // namespace core
} // namespace roc
 
#endif // ROC_CORE_ERRNO_TO_STR_H_