mirror of
https://github.com/RGBCube/serenity
synced 2025-05-22 17:15:08 +00:00
ccdcb6a635
The current method of emitting performance events requires a bit of boiler plate at every invocation, as well as having to ignore the return code which isn't used outside of the perf event syscall. This change attempts to clean that up by exposing high level API's that can be used around the code base.
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, Brian Gianforcaro <bgianf@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 <Kernel/PerformanceEventBuffer.h>
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#include <Kernel/Process.h>
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#include <Kernel/Thread.h>
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namespace Kernel {
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class PerformanceManager {
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public:
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inline static void add_thread_created_event(Thread& thread)
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{
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if (auto* event_buffer = thread.process().current_perf_events_buffer()) {
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[[maybe_unused]] auto rc = event_buffer->append(PERF_EVENT_THREAD_CREATE, thread.tid().value(), 0, nullptr, &thread);
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}
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}
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inline static void add_thread_exit_event(Thread& thread)
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{
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if (auto* event_buffer = thread.process().current_perf_events_buffer()) {
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[[maybe_unused]] auto rc = event_buffer->append(PERF_EVENT_THREAD_EXIT, thread.tid().value(), 0, nullptr, &thread);
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}
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}
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inline static void add_mmap_perf_event(Process& current_process, Region const& region)
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{
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if (auto* event_buffer = current_process.current_perf_events_buffer()) {
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[[maybe_unused]] auto res = event_buffer->append(PERF_EVENT_MMAP, region.vaddr().get(), region.size(), region.name());
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}
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}
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inline static void add_unmap_perf_event(Process& current_process, Range const& region)
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{
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if (auto* event_buffer = current_process.current_perf_events_buffer()) {
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[[maybe_unused]] auto res = event_buffer->append(PERF_EVENT_MUNMAP, region.base().get(), region.size(), nullptr);
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}
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}
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};
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}
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