mirror of
https://github.com/matrix-construct/construct
synced 2024-12-28 08:24:08 +01:00
70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_PROF_PSI_H
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namespace ircd::prof::psi
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{
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struct file;
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struct metric;
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struct trigger;
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// Read and update the referenced extern.
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bool refresh(file &) noexcept;
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// Yield ircd::ctx until event; returns unrefreshed
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file &wait(const vector_view<const trigger> & = {});
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extern const bool supported;
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extern const string_view path[3];
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extern file cpu, mem, io;
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}
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struct ircd::prof::psi::trigger
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{
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const psi::file &file;
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string_view string;
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};
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struct ircd::prof::psi::metric
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{
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struct avg
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{
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seconds window;
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float pct;
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};
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struct
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{
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microseconds total; // stall value direct from system
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microseconds relative; // value since last sample only
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microseconds window; // duration since last sample
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float pct; // % of stall time since last sample
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}
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stall;
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std::array<struct avg, 3> avg;
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};
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struct ircd::prof::psi::file
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{
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string_view name;
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system_point sampled;
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metric some, full;
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};
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#ifndef __linux__
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inline bool
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ircd::prof::psi::refresh(metric &)
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noexcept
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{
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return false; // unsupported platform
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}
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#endif
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