mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 17:42:43 +00:00
784ab75d2d
This was completely unnecessary and accounted for 6% of the total time spent when loading a WebContent coredump into CrashReporter.
118 lines
3.6 KiB
C++
118 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/HashMap.h>
|
|
#include <AK/MappedFile.h>
|
|
#include <AK/Noncopyable.h>
|
|
#include <AK/OwnPtr.h>
|
|
#include <LibELF/Core.h>
|
|
#include <LibELF/Image.h>
|
|
|
|
namespace Coredump {
|
|
|
|
class Reader {
|
|
AK_MAKE_NONCOPYABLE(Reader);
|
|
AK_MAKE_NONMOVABLE(Reader);
|
|
|
|
public:
|
|
static OwnPtr<Reader> create(const String&);
|
|
~Reader();
|
|
|
|
template<typename Func>
|
|
void for_each_memory_region_info(Func func) const;
|
|
|
|
template<typename Func>
|
|
void for_each_thread_info(Func func) const;
|
|
|
|
const ELF::Image& image() const { return m_coredump_image; }
|
|
|
|
Optional<FlatPtr> peek_memory(FlatPtr address) const;
|
|
ELF::Core::MemoryRegionInfo const* first_region_for_object(StringView object_name) const;
|
|
const ELF::Core::MemoryRegionInfo* region_containing(FlatPtr address) const;
|
|
|
|
struct LibraryData {
|
|
String name;
|
|
FlatPtr base_address { 0 };
|
|
NonnullRefPtr<MappedFile> file;
|
|
ELF::Image lib_elf;
|
|
};
|
|
const LibraryData* library_containing(FlatPtr address) const;
|
|
|
|
int process_pid() const;
|
|
u8 process_termination_signal() const;
|
|
String process_executable_path() const;
|
|
Vector<String> process_arguments() const;
|
|
Vector<String> process_environment() const;
|
|
HashMap<String, String> metadata() const;
|
|
|
|
private:
|
|
explicit Reader(ReadonlyBytes);
|
|
explicit Reader(ByteBuffer);
|
|
explicit Reader(NonnullRefPtr<MappedFile>);
|
|
|
|
static Optional<ByteBuffer> decompress_coredump(const ReadonlyBytes&);
|
|
|
|
class NotesEntryIterator {
|
|
public:
|
|
NotesEntryIterator(const u8* notes_data);
|
|
|
|
ELF::Core::NotesEntryHeader::Type type() const;
|
|
const ELF::Core::NotesEntry* current() const;
|
|
|
|
void next();
|
|
bool at_end() const;
|
|
|
|
private:
|
|
const ELF::Core::NotesEntry* m_current { nullptr };
|
|
const u8* start { nullptr };
|
|
};
|
|
|
|
// Private as we don't need anyone poking around in this JsonObject
|
|
// manually - we know very well what should be included and expose that
|
|
// as getters with the appropriate (non-JsonValue) types.
|
|
const JsonObject process_info() const;
|
|
|
|
// For uncompressed coredumps, we keep the MappedFile
|
|
RefPtr<MappedFile> m_mapped_file;
|
|
|
|
// For compressed coredumps, we decompress them into a ByteBuffer
|
|
ByteBuffer m_coredump_buffer;
|
|
|
|
ReadonlyBytes m_coredump_bytes;
|
|
|
|
ELF::Image m_coredump_image;
|
|
ssize_t m_notes_segment_index { -1 };
|
|
};
|
|
|
|
template<typename Func>
|
|
void Reader::for_each_memory_region_info(Func func) const
|
|
{
|
|
for (NotesEntryIterator it((const u8*)m_coredump_image.program_header(m_notes_segment_index).raw_data()); !it.at_end(); it.next()) {
|
|
if (it.type() != ELF::Core::NotesEntryHeader::Type::MemoryRegionInfo)
|
|
continue;
|
|
auto& memory_region_info = reinterpret_cast<const ELF::Core::MemoryRegionInfo&>(*it.current());
|
|
IterationDecision decision = func(memory_region_info);
|
|
if (decision == IterationDecision::Break)
|
|
return;
|
|
}
|
|
}
|
|
|
|
template<typename Func>
|
|
void Reader::for_each_thread_info(Func func) const
|
|
{
|
|
for (NotesEntryIterator it((const u8*)m_coredump_image.program_header(m_notes_segment_index).raw_data()); !it.at_end(); it.next()) {
|
|
if (it.type() != ELF::Core::NotesEntryHeader::Type::ThreadInfo)
|
|
continue;
|
|
auto& thread_info = reinterpret_cast<const ELF::Core::ThreadInfo&>(*it.current());
|
|
IterationDecision decision = func(thread_info);
|
|
if (decision == IterationDecision::Break)
|
|
return;
|
|
}
|
|
}
|
|
|
|
}
|