mirror of
https://github.com/RGBCube/serenity
synced 2026-01-15 23:50:59 +00:00
ac1cac286b
Previously, we assumed that the `.text` segment was loaded at vaddr 0 in shared object, which is not the case with `-z separate-code` enabled. Because we didn't do the right calculations to translate an address from a performance event into its value within the ELF file, Profiler would try to disassemble out-of-bounds memory locations, leading to a crash. This commit also changes `LibraryMetadata` to apply to a loaded library as a whole, not just to one of its segments (like .text or .data). This lets us simplify the interface, as we no longer have to worry about `text_base`. Fixes #10628
73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "EventSerialNumber.h"
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#include <AK/HashMap.h>
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#include <AK/MappedFile.h>
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#include <AK/OwnPtr.h>
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#include <AK/Vector.h>
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#include <LibELF/Image.h>
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namespace Profiler {
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struct MappedObject {
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NonnullRefPtr<MappedFile> file;
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ELF::Image elf;
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};
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extern HashMap<String, OwnPtr<MappedObject>> g_mapped_object_cache;
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class LibraryMetadata {
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public:
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struct Library {
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FlatPtr base;
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size_t size;
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String name;
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MappedObject* object { nullptr };
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String symbolicate(FlatPtr, u32* offset) const;
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};
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void handle_mmap(FlatPtr base, size_t size, const String& name);
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const Library* library_containing(FlatPtr) const;
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private:
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mutable HashMap<String, NonnullOwnPtr<Library>> m_libraries;
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};
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struct Thread {
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pid_t tid;
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EventSerialNumber start_valid;
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EventSerialNumber end_valid;
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bool valid_at(EventSerialNumber serial) const
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{
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return serial >= start_valid && (end_valid == EventSerialNumber {} || serial <= end_valid);
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}
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};
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struct Process {
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pid_t pid {};
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String executable;
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String basename;
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HashMap<int, Vector<Thread>> threads {};
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LibraryMetadata library_metadata {};
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EventSerialNumber start_valid;
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EventSerialNumber end_valid;
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Thread* find_thread(pid_t tid, EventSerialNumber serial);
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void handle_thread_create(pid_t tid, EventSerialNumber serial);
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void handle_thread_exit(pid_t tid, EventSerialNumber serial);
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bool valid_at(EventSerialNumber serial) const
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{
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return serial >= start_valid && (end_valid == EventSerialNumber {} || serial <= end_valid);
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}
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};
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}
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