92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
// Copyright 2015 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/assert.h"
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#include "common/logging/log.h"
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#include "core/core.h"
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#include "core/core_timing.h"
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#include "core/core_timing_util.h"
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#include "core/hle/kernel/handle_table.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/object.h"
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#include "core/hle/kernel/thread.h"
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#include "core/hle/kernel/timer.h"
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namespace Kernel {
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Timer::Timer(KernelCore& kernel) : WaitObject{kernel} {}
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Timer::~Timer() = default;
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SharedPtr<Timer> Timer::Create(KernelCore& kernel, ResetType reset_type, std::string name) {
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SharedPtr<Timer> timer(new Timer(kernel));
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timer->reset_type = reset_type;
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timer->signaled = false;
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timer->name = std::move(name);
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timer->initial_delay = 0;
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timer->interval_delay = 0;
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timer->callback_handle = kernel.CreateTimerCallbackHandle(timer).Unwrap();
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return timer;
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}
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bool Timer::ShouldWait(Thread* thread) const {
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return !signaled;
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}
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void Timer::Acquire(Thread* thread) {
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ASSERT_MSG(!ShouldWait(thread), "object unavailable!");
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if (reset_type == ResetType::OneShot)
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signaled = false;
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}
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void Timer::Set(s64 initial, s64 interval) {
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// Ensure we get rid of any previous scheduled event
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Cancel();
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initial_delay = initial;
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interval_delay = interval;
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if (initial == 0) {
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// Immediately invoke the callback
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Signal(0);
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} else {
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CoreTiming::ScheduleEvent(CoreTiming::nsToCycles(initial), kernel.TimerCallbackEventType(),
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callback_handle);
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}
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}
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void Timer::Cancel() {
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CoreTiming::UnscheduleEvent(kernel.TimerCallbackEventType(), callback_handle);
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}
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void Timer::Clear() {
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signaled = false;
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}
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void Timer::WakeupAllWaitingThreads() {
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WaitObject::WakeupAllWaitingThreads();
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if (reset_type == ResetType::Pulse)
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signaled = false;
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}
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void Timer::Signal(int cycles_late) {
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LOG_TRACE(Kernel, "Timer {} fired", GetObjectId());
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signaled = true;
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// Resume all waiting threads
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WakeupAllWaitingThreads();
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if (interval_delay != 0) {
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// Reschedule the timer with the interval delay
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CoreTiming::ScheduleEvent(CoreTiming::nsToCycles(interval_delay) - cycles_late,
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kernel.TimerCallbackEventType(), callback_handle);
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}
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}
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} // namespace Kernel
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