mirror of
https://github.com/matrix-construct/construct
synced 2024-12-29 08:54:02 +01:00
103 lines
2.5 KiB
C++
103 lines
2.5 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_H
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namespace ircd::prof
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{
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struct init;
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struct type;
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struct event;
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enum dpl :uint8_t;
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using group = std::vector<std::unique_ptr<event>>;
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IRCD_EXCEPTION(ircd::error, error)
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IRCD_OVERLOAD(sample)
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// Samples
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uint64_t cycles() noexcept; ///< Monotonic reference cycles (since system boot)
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uint64_t time_user() noexcept; ///< Nanoseconds of CPU time in userspace.
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uint64_t time_kern() noexcept; ///< Nanoseconds of CPU time in kernelland.
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uint64_t time_real() noexcept; ///< Nanoseconds of CPU time real.
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uint64_t time_proc(); ///< Nanoseconds of CPU time for process.
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uint64_t time_thrd(); ///< Nanoseconds of CPU time for thread.
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// Control panel
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void stop(group &);
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void start(group &);
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void reset(group &);
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// Config
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extern conf::item<bool> enable;
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}
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#include "x86.h"
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#include "vg.h"
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#include "syscall_timer.h"
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#include "instructions.h"
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#include "resource.h"
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#include "times.h"
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#include "system.h"
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// Exports to ircd::
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namespace ircd
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{
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using prof::cycles;
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}
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/// Type descriptor for prof events. This structure is used to aggregate
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/// information that describes a profiling event type, including whether
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/// the kernel or the user is being profiled (dpl), the principal counter
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/// type being profiled (counter) and any other contextual attributes.
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struct ircd::prof::type
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{
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enum dpl dpl {0};
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uint8_t type_id {0};
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uint8_t counter {0};
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uint8_t cacheop {0};
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uint8_t cacheres {0};
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type(const event &);
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type(const enum dpl & = (enum dpl)0,
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const uint8_t &attr_type = 0,
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const uint8_t &counter = 0,
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const uint8_t &cacheop = 0,
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const uint8_t &cacheres = 0);
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};
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enum ircd::prof::dpl
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:std::underlying_type<ircd::prof::dpl>::type
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{
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KERNEL = 0,
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USER = 1,
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};
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struct ircd::prof::init
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{
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init();
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~init() noexcept;
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};
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#if defined(__x86_64__) || defined(__i386__)
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extern inline uint64_t
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__attribute__((flatten, always_inline, gnu_inline, artificial))
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ircd::prof::cycles()
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noexcept
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{
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return x86::rdtsc();
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}
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#else
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ircd::prof::cycles()
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noexcept
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{
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static_assert(false, "Select reference cycle counter for platform.");
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return 0;
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}
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#endif
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