788e3b31e1
The "pure" and "const" attributes are not so well-defined, and a recent clang version implements an optimization which pushes the definition's boundary beyond what I believed it was. clang now assumes that functions declared "pure" cannot throw exceptions, even if they lack the "noexcept" specification. When compiled with this new clang version, MPD will crash randomly if an exception happens to get thrown by such as "pure" function (https://github.com/MusicPlayerDaemon/MPD/issues/41). This commit removes all such misplaced "pure" and "const" attributes, closing #41.
108 lines
2.9 KiB
C++
108 lines
2.9 KiB
C++
/*
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* Copyright 2003-2017 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_CONFIG_GLOBAL_HXX
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#define MPD_CONFIG_GLOBAL_HXX
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#include "ConfigOption.hxx"
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#include "Compiler.h"
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#include <chrono>
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class Path;
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class AllocatedPath;
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struct ConfigParam;
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struct ConfigBlock;
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void
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config_global_init();
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void
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config_global_finish();
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/**
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* Call this function after all configuration has been evaluated. It
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* checks for unused parameters, and logs warnings.
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*/
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void
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config_global_check();
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void
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ReadConfigFile(Path path);
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gcc_pure
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const ConfigParam *
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config_get_param(enum ConfigOption option) noexcept;
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gcc_pure
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const ConfigBlock *
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config_get_block(enum ConfigBlockOption option) noexcept;
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/**
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* Find a block with a matching attribute.
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*
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* @param option the blocks to search
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* @param key the attribute name
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* @param value the expected attribute value
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*/
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const ConfigBlock *
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config_find_block(ConfigBlockOption option, const char *key, const char *value);
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const char *
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config_get_string(enum ConfigOption option,
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const char *default_value=nullptr) noexcept;
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/**
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* Returns an optional configuration variable which contains an
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* absolute path. If there is a tilde prefix, it is expanded.
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* Returns AllocatedPath::Null() if the value is not present.
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*
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* Throws #std::runtime_error on error.
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*/
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AllocatedPath
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config_get_path(enum ConfigOption option);
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unsigned
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config_get_unsigned(enum ConfigOption option, unsigned default_value);
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static inline std::chrono::steady_clock::duration
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config_get_unsigned(ConfigOption option,
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std::chrono::steady_clock::duration default_value)
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{
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// TODO: allow unit suffixes
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auto u = config_get_unsigned(option, default_value.count());
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return std::chrono::steady_clock::duration(u);
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}
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unsigned
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config_get_positive(enum ConfigOption option, unsigned default_value);
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static inline std::chrono::steady_clock::duration
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config_get_positive(ConfigOption option,
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std::chrono::steady_clock::duration default_value)
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{
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// TODO: allow unit suffixes
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auto u = config_get_positive(option, default_value.count());
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return std::chrono::steady_clock::duration(u);
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}
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bool config_get_bool(enum ConfigOption option, bool default_value);
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#endif
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