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SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
/*
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* Copyright (c) 2020, 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 <Kernel/KBuffer.h>
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#include <Kernel/KResult.h>
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namespace Kernel {
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class KBufferBuilder;
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struct [[gnu::packed]] MallocPerformanceEvent {
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size_t size;
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FlatPtr ptr;
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};
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struct [[gnu::packed]] FreePerformanceEvent {
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size_t size;
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FlatPtr ptr;
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};
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struct [[gnu::packed]] PerformanceEvent {
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u8 type { 0 };
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u8 stack_size { 0 };
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u32 tid { 0 };
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u64 timestamp;
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union {
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MallocPerformanceEvent malloc;
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FreePerformanceEvent free;
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} data;
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static constexpr size_t max_stack_frame_count = 32;
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FlatPtr stack[max_stack_frame_count];
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};
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class PerformanceEventBuffer {
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public:
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static OwnPtr<PerformanceEventBuffer> try_create_with_size(size_t buffer_size);
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KResult append(int type, FlatPtr arg1, FlatPtr arg2);
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KResult append_with_eip_and_ebp(u32 eip, u32 ebp, int type, FlatPtr arg1, FlatPtr arg2);
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void clear()
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{
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m_count = 0;
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}
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size_t capacity() const { return m_buffer->size() / sizeof(PerformanceEvent); }
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size_t count() const { return m_count; }
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const PerformanceEvent& at(size_t index) const
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{
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return const_cast<PerformanceEventBuffer&>(*this).at(index);
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}
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bool to_json(KBufferBuilder&) const;
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void add_process(const Process&);
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private:
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explicit PerformanceEventBuffer(NonnullOwnPtr<KBuffer>);
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struct SampledProcess {
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ProcessID pid;
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String executable;
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HashTable<ThreadID> threads;
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struct Region {
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String name;
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Range range;
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};
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Vector<Region> regions;
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};
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template<typename Serializer>
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bool to_json_impl(Serializer&) const;
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PerformanceEvent& at(size_t index);
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size_t m_count { 0 };
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NonnullOwnPtr<KBuffer> m_buffer;
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HashMap<ProcessID, NonnullOwnPtr<SampledProcess>> m_processes;
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};
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}
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