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