mirror of
https://github.com/RGBCube/serenity
synced 2025-05-15 16:24:58 +00:00
121 lines
3.3 KiB
C++
121 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "Process.h"
|
|
|
|
namespace Profiler {
|
|
|
|
Thread* Process::find_thread(pid_t tid, u64 timestamp)
|
|
{
|
|
auto it = threads.find(tid);
|
|
if (it == threads.end())
|
|
return nullptr;
|
|
for (auto& thread : it->value) {
|
|
if (thread.start_valid < timestamp && (thread.end_valid == 0 || thread.end_valid > timestamp))
|
|
return &thread;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void Process::handle_thread_create(pid_t tid, u64 timestamp)
|
|
{
|
|
auto it = threads.find(tid);
|
|
if (it == threads.end()) {
|
|
threads.set(tid, {});
|
|
it = threads.find(tid);
|
|
}
|
|
|
|
auto thread = Thread { tid, timestamp, 0 };
|
|
it->value.append(move(thread));
|
|
}
|
|
|
|
void Process::handle_thread_exit(pid_t tid, u64 timestamp)
|
|
{
|
|
auto* thread = find_thread(tid, timestamp);
|
|
if (!thread)
|
|
return;
|
|
thread->end_valid = timestamp;
|
|
}
|
|
|
|
HashMap<String, OwnPtr<MappedObject>> g_mapped_object_cache;
|
|
|
|
static MappedObject* get_or_create_mapped_object(const String& path)
|
|
{
|
|
if (auto it = g_mapped_object_cache.find(path); it != g_mapped_object_cache.end())
|
|
return it->value.ptr();
|
|
|
|
auto file_or_error = MappedFile::map(path);
|
|
if (file_or_error.is_error()) {
|
|
g_mapped_object_cache.set(path, {});
|
|
return nullptr;
|
|
}
|
|
auto elf = ELF::Image(file_or_error.value()->bytes());
|
|
if (!elf.is_valid()) {
|
|
g_mapped_object_cache.set(path, {});
|
|
return nullptr;
|
|
}
|
|
auto new_mapped_object = adopt_own(*new MappedObject {
|
|
.file = file_or_error.release_value(),
|
|
.elf = elf,
|
|
});
|
|
auto* ptr = new_mapped_object.ptr();
|
|
g_mapped_object_cache.set(path, move(new_mapped_object));
|
|
return ptr;
|
|
}
|
|
|
|
void LibraryMetadata::handle_mmap(FlatPtr base, size_t size, const String& name)
|
|
{
|
|
String path;
|
|
if (name.contains("Loader.so"))
|
|
path = "Loader.so";
|
|
else if (!name.contains(":"))
|
|
return;
|
|
else
|
|
path = name.substring(0, name.view().find_first_of(":").value());
|
|
|
|
String full_path;
|
|
if (name.contains(".so"))
|
|
full_path = String::formatted("/usr/lib/{}", path);
|
|
else
|
|
full_path = path;
|
|
|
|
auto* mapped_object = get_or_create_mapped_object(full_path);
|
|
if (!mapped_object) {
|
|
full_path = String::formatted("/usr/local/lib/{}", path);
|
|
mapped_object = get_or_create_mapped_object(full_path);
|
|
if (!mapped_object)
|
|
return;
|
|
}
|
|
|
|
FlatPtr text_base {};
|
|
mapped_object->elf.for_each_program_header([&](const ELF::Image::ProgramHeader& ph) {
|
|
if (ph.is_executable())
|
|
text_base = ph.vaddr().get();
|
|
return IterationDecision::Continue;
|
|
});
|
|
|
|
m_libraries.set(name, adopt_own(*new Library { base, size, name, text_base, mapped_object }));
|
|
}
|
|
|
|
String LibraryMetadata::Library::symbolicate(FlatPtr ptr, u32* offset) const
|
|
{
|
|
if (!object)
|
|
return String::formatted("?? <{:p}>", ptr);
|
|
|
|
return object->elf.symbolicate(ptr - base + text_base, offset);
|
|
}
|
|
|
|
const LibraryMetadata::Library* LibraryMetadata::library_containing(FlatPtr ptr) const
|
|
{
|
|
for (auto& it : m_libraries) {
|
|
auto& library = *it.value;
|
|
if (ptr >= library.base && ptr < (library.base + library.size))
|
|
return &library;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
}
|