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Kernel: Make PerformanceEventBuffer::add_process fallible with ErrorOr
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commit
8a4654a924
4 changed files with 22 additions and 16 deletions
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@ -313,29 +313,34 @@ OwnPtr<PerformanceEventBuffer> PerformanceEventBuffer::try_create_with_size(size
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return adopt_own_if_nonnull(new (nothrow) PerformanceEventBuffer(buffer_or_error.release_value()));
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}
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void PerformanceEventBuffer::add_process(const Process& process, ProcessEventType event_type)
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ErrorOr<void> PerformanceEventBuffer::add_process(const Process& process, ProcessEventType event_type)
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{
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SpinlockLocker locker(process.address_space().get_lock());
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OwnPtr<KString> executable;
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if (process.executable())
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executable = MUST(process.executable()->try_serialize_absolute_path());
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executable = TRY(process.executable()->try_serialize_absolute_path());
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else
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executable = MUST(KString::formatted("<{}>", process.name()));
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executable = TRY(KString::formatted("<{}>", process.name()));
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[[maybe_unused]] auto rc = append_with_ip_and_bp(process.pid(), 0, 0, 0,
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TRY(append_with_ip_and_bp(process.pid(), 0, 0, 0,
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event_type == ProcessEventType::Create ? PERF_EVENT_PROCESS_CREATE : PERF_EVENT_PROCESS_EXEC,
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0, process.pid().value(), 0, executable->view());
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0, process.pid().value(), 0, executable->view()));
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ErrorOr<void> result;
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process.for_each_thread([&](auto& thread) {
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[[maybe_unused]] auto rc = append_with_ip_and_bp(process.pid(), thread.tid().value(),
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result = append_with_ip_and_bp(process.pid(), thread.tid().value(),
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0, 0, PERF_EVENT_THREAD_CREATE, 0, 0, 0, nullptr);
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return result.is_error() ? IterationDecision::Break : IterationDecision::Continue;
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});
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TRY(result);
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for (auto const& region : process.address_space().regions()) {
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[[maybe_unused]] auto rc = append_with_ip_and_bp(process.pid(), 0,
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0, 0, PERF_EVENT_MMAP, 0, region->range().base().get(), region->range().size(), region->name());
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TRY(append_with_ip_and_bp(process.pid(), 0,
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0, 0, PERF_EVENT_MMAP, 0, region->range().base().get(), region->range().size(), region->name()));
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}
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return {};
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}
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ErrorOr<FlatPtr> PerformanceEventBuffer::register_string(NonnullOwnPtr<KString> string)
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