llvm/libc/src/__support/StringUtil/signal_to_string.cpp

//===-- Implementation of a class for mapping signals to strings ----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "signal_to_string.h"
#include "platform_signals.h"

#include "src/__support/CPP/span.h"
#include "src/__support/CPP/string_view.h"
#include "src/__support/CPP/stringstream.h"
#include "src/__support/StringUtil/message_mapper.h"
#include "src/__support/integer_to_string.h"
#include "src/__support/macros/attributes.h"
#include "src/__support/macros/config.h"

#include <signal.h>
#include <stddef.h>

namespace LIBC_NAMESPACE_DECL {
namespace internal {

constexpr size_t max_buff_size() { … }

// This is to hold signal strings that have to be custom built. It may be
// rewritten on every call to strsignal (or other signal to string function).
constexpr size_t SIG_BUFFER_SIZE = …;
LIBC_THREAD_LOCAL char signal_buffer[SIG_BUFFER_SIZE];

constexpr size_t TOTAL_STR_LEN = …;

constexpr size_t SIG_ARRAY_SIZE = …;

constexpr MessageMapper<SIG_ARRAY_SIZE, TOTAL_STR_LEN>
    signal_mapper(PLATFORM_SIGNALS);

cpp::string_view build_signal_string(int sig_num, cpp::span<char> buffer) { … }

} // namespace internal

cpp::string_view get_signal_string(int sig_num) { … }

cpp::string_view get_signal_string(int sig_num, cpp::span<char> buffer) { … }

} // namespace LIBC_NAMESPACE_DECL