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Profiler: Use CoreDumpReader::library_containing

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This commit is contained in:
Itamar 2021-01-09 11:10:31 +02:00 • committed by Andreas Kling
parent 65ffd8de69
commit 1af2f65df5
2 changed files with 10 additions and 50 deletions
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55
DevTools/Profiler/Profile.cpp
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@ -32,7 +32,6 @@
#include <AK/QuickSort.h>
#include <AK/RefPtr.h>
#include <LibCore/File.h>
#include <LibCoreDump/Reader.h>
#include <LibELF/Image.h>
#include <stdio.h>
#include <sys/stat.h>
@ -47,61 +46,19 @@ static void sort_profile_nodes(Vector<NonnullRefPtr<ProfileNode>>& nodes)
child->sort_children();
}
struct CachedLibData {
OwnPtr<MappedFile> file;
ELF::Image lib_elf;
};
static String symbolicate(FlatPtr eip, const ELF::Core::MemoryRegionInfo* region, u32& offset)
{
static HashMap<String, OwnPtr<CachedLibData>> cached_libs;
auto name = region->object_name();
String path;
if (name.contains(".so"))
path = String::format("/usr/lib/%s", name.characters());
else {
path = name;
}
struct stat st;
if (stat(path.characters(), &st)) {
return {};
}
if (!cached_libs.contains(path)) {
auto lib_file = make<MappedFile>(path);
if (!lib_file->is_valid())
return {};
auto image = ELF::Image((const u8*)lib_file->data(), lib_file->size());
cached_libs.set(path, make<CachedLibData>(move(lib_file), move(image)));
}
auto lib_data = cached_libs.get(path).value();
return String::format("[%s] %s", name.characters(), lib_data->lib_elf.symbolicate(eip - region->region_start, &offset).characters());
}
static String symbolicate_from_coredump(CoreDump::Reader& coredump, u32 ptr, [[maybe_unused]] u32& offset)
{
auto* region = coredump.region_containing((FlatPtr)ptr);
if (!region) {
dbgln("did not find region for eip: {:p}", ptr);
return "??";
}
auto name = symbolicate((FlatPtr)ptr, region, offset);
if (name.is_null()) {
auto library_data = coredump.library_containing(ptr);
if (!library_data) {
dbgln("could not symbolicate: {:p}", ptr);
return "??";
}
return name;
return String::formatted("[{}] {}", library_data->name, library_data->lib_elf.symbolicate(ptr - library_data->base_address, &offset));
}
Profile::Profile(String executable_path, Vector<Event> events)
Profile::Profile(String executable_path, NonnullOwnPtr<CoreDump::Reader>&& coredump, Vector<Event> events)
: m_executable_path(move(executable_path))
, m_coredump(move(coredump))
, m_events(move(events))
{
m_first_timestamp = m_events.first().timestamp;
@ -332,7 +289,7 @@ Result<NonnullOwnPtr<Profile>, String> Profile::load_from_perfcore_file(const St
events.append(move(event));
}
return adopt_own(*new Profile(executable_path, move(events)));
return adopt_own(*new Profile(executable_path, coredump.release_nonnull(), move(events)));
}
void ProfileNode::sort_children()