/*
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* Copyright (C) 2015 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <stdint.h>
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#include <string>
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#include <unordered_map>
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constexpr uint64_t FRONT_GUARD = 0x1;
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constexpr uint64_t REAR_GUARD = 0x2;
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constexpr uint64_t BACKTRACE = 0x4;
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constexpr uint64_t FILL_ON_ALLOC = 0x8;
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constexpr uint64_t FILL_ON_FREE = 0x10;
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constexpr uint64_t EXPAND_ALLOC = 0x20;
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constexpr uint64_t FREE_TRACK = 0x40;
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constexpr uint64_t TRACK_ALLOCS = 0x80;
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constexpr uint64_t LEAK_TRACK = 0x100;
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constexpr uint64_t RECORD_ALLOCS = 0x200;
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constexpr uint64_t BACKTRACE_FULL = 0x400;
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constexpr uint64_t ABORT_ON_ERROR = 0x800;
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constexpr uint64_t VERBOSE = 0x1000;
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// In order to guarantee posix compliance, set the minimum alignment
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// to 8 bytes for 32 bit systems and 16 bytes for 64 bit systems.
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#if defined(__LP64__)
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constexpr size_t MINIMUM_ALIGNMENT_BYTES = 16;
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#else
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constexpr size_t MINIMUM_ALIGNMENT_BYTES = 8;
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#endif
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// If one or more of these options is set, then a special header is needed.
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constexpr uint64_t HEADER_OPTIONS = FRONT_GUARD | REAR_GUARD;
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class Config {
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public:
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bool Init(const char* options_str);
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void LogUsage() const;
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uint64_t options() const { return options_; }
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int backtrace_signal() const { return backtrace_signal_; }
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int backtrace_dump_signal() const { return backtrace_dump_signal_; }
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size_t backtrace_frames() const { return backtrace_frames_; }
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size_t backtrace_enabled() const { return backtrace_enabled_; }
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size_t backtrace_enable_on_signal() const { return backtrace_enable_on_signal_; }
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bool backtrace_dump_on_exit() const { return backtrace_dump_on_exit_; }
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const std::string& backtrace_dump_prefix() const { return backtrace_dump_prefix_; }
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size_t front_guard_bytes() const { return front_guard_bytes_; }
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size_t rear_guard_bytes() const { return rear_guard_bytes_; }
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uint8_t front_guard_value() const { return front_guard_value_; }
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uint8_t rear_guard_value() const { return rear_guard_value_; }
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size_t expand_alloc_bytes() const { return expand_alloc_bytes_; }
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size_t free_track_allocations() const { return free_track_allocations_; }
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size_t free_track_backtrace_num_frames() const { return free_track_backtrace_num_frames_; }
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size_t fill_on_alloc_bytes() const { return fill_on_alloc_bytes_; }
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size_t fill_on_free_bytes() const { return fill_on_free_bytes_; }
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uint8_t fill_alloc_value() const { return fill_alloc_value_; }
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uint8_t fill_free_value() const { return fill_free_value_; }
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int record_allocs_signal() const { return record_allocs_signal_; }
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size_t record_allocs_num_entries() const { return record_allocs_num_entries_; }
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const std::string& record_allocs_file() const { return record_allocs_file_; }
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private:
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struct OptionInfo {
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uint64_t option;
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bool (Config::*process_func)(const std::string&, const std::string&);
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};
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bool ParseValue(const std::string& option, const std::string& value, size_t default_value,
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size_t min_value, size_t max_value, size_t* new_value) const;
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bool ParseValue(const std::string& option, const std::string& value, size_t min_value,
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size_t max_value, size_t* parsed_value) const;
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bool SetGuard(const std::string& option, const std::string& value);
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bool SetFrontGuard(const std::string& option, const std::string& value);
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bool SetRearGuard(const std::string& option, const std::string& value);
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bool SetFill(const std::string& option, const std::string& value);
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bool SetFillOnAlloc(const std::string& option, const std::string& value);
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bool SetFillOnFree(const std::string& option, const std::string& value);
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bool SetBacktrace(const std::string& option, const std::string& value);
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bool SetBacktraceEnableOnSignal(const std::string& option, const std::string& value);
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bool SetBacktraceDumpOnExit(const std::string& option, const std::string& value);
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bool SetBacktraceDumpPrefix(const std::string& option, const std::string& value);
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bool SetExpandAlloc(const std::string& option, const std::string& value);
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bool SetFreeTrack(const std::string& option, const std::string& value);
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bool SetFreeTrackBacktraceNumFrames(const std::string& option, const std::string& value);
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bool SetRecordAllocs(const std::string& option, const std::string& value);
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bool SetRecordAllocsFile(const std::string& option, const std::string& value);
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bool VerifyValueEmpty(const std::string& option, const std::string& value);
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static bool GetOption(const char** option_str, std::string* option, std::string* value);
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const static std::unordered_map<std::string, OptionInfo> kOptions;
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size_t front_guard_bytes_ = 0;
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size_t rear_guard_bytes_ = 0;
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bool backtrace_enable_on_signal_ = false;
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int backtrace_signal_ = 0;
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int backtrace_dump_signal_ = 0;
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bool backtrace_enabled_ = false;
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size_t backtrace_frames_ = 0;
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bool backtrace_dump_on_exit_ = false;
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std::string backtrace_dump_prefix_;
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size_t fill_on_alloc_bytes_ = 0;
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size_t fill_on_free_bytes_ = 0;
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size_t expand_alloc_bytes_ = 0;
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size_t free_track_allocations_ = 0;
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size_t free_track_backtrace_num_frames_ = 0;
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int record_allocs_signal_ = 0;
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size_t record_allocs_num_entries_ = 0;
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std::string record_allocs_file_;
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uint64_t options_ = 0;
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uint8_t fill_alloc_value_;
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uint8_t fill_free_value_;
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uint8_t front_guard_value_;
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uint8_t rear_guard_value_;
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};
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