95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
// Copyright (c) 2011-2016 The Cryptonote developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "Timer.h"
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#include <cassert>
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#include <string>
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#include <System/InterruptedException.h>
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#include "Dispatcher.h"
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namespace System {
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namespace {
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struct TimerContext {
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uint64_t time;
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NativeContext* context;
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bool interrupted;
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};
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}
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Timer::Timer() : dispatcher(nullptr) {
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}
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Timer::Timer(Dispatcher& dispatcher) : dispatcher(&dispatcher), context(nullptr) {
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}
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Timer::Timer(Timer&& other) : dispatcher(other.dispatcher) {
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if (dispatcher != nullptr) {
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assert(other.context == nullptr);
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context = nullptr;
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other.dispatcher = nullptr;
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}
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}
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Timer::~Timer() {
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assert(dispatcher == nullptr || context == nullptr);
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}
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Timer& Timer::operator=(Timer&& other) {
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assert(dispatcher == nullptr || context == nullptr);
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dispatcher = other.dispatcher;
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if (dispatcher != nullptr) {
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assert(other.context == nullptr);
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context = nullptr;
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other.dispatcher = nullptr;
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}
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return *this;
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}
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void Timer::sleep(std::chrono::nanoseconds duration) {
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assert(dispatcher != nullptr);
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assert(context == nullptr);
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if (dispatcher->interrupted()) {
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throw InterruptedException();
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}
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LARGE_INTEGER frequency;
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LARGE_INTEGER ticks;
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QueryPerformanceCounter(&ticks);
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QueryPerformanceFrequency(&frequency);
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uint64_t currentTime = ticks.QuadPart / (frequency.QuadPart / 1000);
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uint64_t time = currentTime + duration.count() / 1000000;
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TimerContext timerContext{ time, dispatcher->getCurrentContext(), false };
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context = &timerContext;
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dispatcher->addTimer(time, dispatcher->getCurrentContext());
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dispatcher->getCurrentContext()->interruptProcedure = [&]() {
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assert(dispatcher != nullptr);
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assert(context != nullptr);
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TimerContext* timerContext = static_cast<TimerContext*>(context);
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if (!timerContext->interrupted) {
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dispatcher->interruptTimer(timerContext->time, timerContext->context);
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timerContext->interrupted = true;
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}
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};
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dispatcher->dispatch();
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dispatcher->getCurrentContext()->interruptProcedure = nullptr;
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assert(timerContext.context == dispatcher->getCurrentContext());
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assert(dispatcher != nullptr);
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assert(context == &timerContext);
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context = nullptr;
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if (timerContext.interrupted) {
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throw InterruptedException();
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}
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}
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}
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