74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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struct [[gnu::packed]] MallocPerformanceEvent {
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size_t size;
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uintptr_t ptr;
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};
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struct [[gnu::packed]] FreePerformanceEvent {
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size_t size;
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uintptr_t 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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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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uintptr_t stack[32];
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};
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class PerformanceEventBuffer {
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public:
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PerformanceEventBuffer();
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KResult append(int type, uintptr_t arg1, uintptr_t arg2);
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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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KBuffer to_json(pid_t, const String& executable_path) const;
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private:
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PerformanceEvent& at(size_t index);
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size_t m_count { 0 };
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KBuffer m_buffer;
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};
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