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arch
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memory
panic
time
hpet.cpp
time.cpp
timer.cpp
tsc.cpp
video
acpi.cpp
cpu.cpp
debugger.cpp
disk.cpp
dsdt.cpp
interrupts_manager.cpp
lock.cpp
pci.cpp
power.cpp
random.cpp
smbios.cpp
smbios.hpp
stack_check.cpp
symbols.cpp
uart.cpp
ubsan.c
ubsan.h
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CREDITS.md
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kernel.cpp
kernel.h
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kernel_thread.cpp
kernel_vfs.cpp
syscalls.h
77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <time.hpp>
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#include <memory.hpp>
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#include <acpi.hpp>
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#include <debug.h>
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#include <io.h>
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#include "../../kernel.h"
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namespace Time
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{
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bool TimeStampCounter::Sleep(size_t Duration, Units Unit)
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{
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#if defined(a86)
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uint64_t Target = this->GetCounter() + (Duration * ConvertUnit(Unit)) / this->clk;
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while (this->GetCounter() < Target)
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CPU::Pause();
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return true;
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#endif
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}
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uint64_t TimeStampCounter::GetCounter()
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{
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#if defined(a86)
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return CPU::Counter();
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#endif
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}
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uint64_t TimeStampCounter::CalculateTarget(uint64_t Target, Units Unit)
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{
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#if defined(a86)
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return uint64_t((this->GetCounter() + (Target * ConvertUnit(Unit))) / this->clk);
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#endif
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}
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uint64_t TimeStampCounter::GetNanosecondsSinceClassCreation()
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{
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#if defined(a86)
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return uint64_t((this->GetCounter() - this->ClassCreationTime) / this->clk);
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#endif
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}
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TimeStampCounter::TimeStampCounter()
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{
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#if defined(a86)
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stub; // FIXME: This is not a good way to measure the clock speed
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uint64_t Start = CPU::Counter();
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TimeManager->Sleep(1, Units::Milliseconds);
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uint64_t End = CPU::Counter();
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this->clk = End - Start;
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this->ClassCreationTime = this->GetCounter();
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#endif
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}
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TimeStampCounter::~TimeStampCounter()
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{
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}
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}
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