116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
// Copyright 2015 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <cinttypes>
|
|
#include "common/assert.h"
|
|
#include "common/logging/log.h"
|
|
#include "core/core_timing.h"
|
|
#include "core/hle/kernel/handle_table.h"
|
|
#include "core/hle/kernel/kernel.h"
|
|
#include "core/hle/kernel/thread.h"
|
|
#include "core/hle/kernel/timer.h"
|
|
|
|
namespace Kernel {
|
|
|
|
/// The event type of the generic timer callback event
|
|
static CoreTiming::EventType* timer_callback_event_type = nullptr;
|
|
// TODO(yuriks): This can be removed if Timer objects are explicitly pooled in the future, allowing
|
|
// us to simply use a pool index or similar.
|
|
static Kernel::HandleTable timer_callback_handle_table;
|
|
|
|
Timer::Timer() {}
|
|
Timer::~Timer() {}
|
|
|
|
SharedPtr<Timer> Timer::Create(ResetType reset_type, std::string name) {
|
|
SharedPtr<Timer> timer(new Timer);
|
|
|
|
timer->reset_type = reset_type;
|
|
timer->signaled = false;
|
|
timer->name = std::move(name);
|
|
timer->initial_delay = 0;
|
|
timer->interval_delay = 0;
|
|
timer->callback_handle = timer_callback_handle_table.Create(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), timer_callback_event_type,
|
|
callback_handle);
|
|
}
|
|
}
|
|
|
|
void Timer::Cancel() {
|
|
CoreTiming::UnscheduleEvent(timer_callback_event_type, 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,
|
|
timer_callback_event_type, callback_handle);
|
|
}
|
|
}
|
|
|
|
/// The timer callback event, called when a timer is fired
|
|
static void TimerCallback(u64 timer_handle, int cycles_late) {
|
|
SharedPtr<Timer> timer =
|
|
timer_callback_handle_table.Get<Timer>(static_cast<Handle>(timer_handle));
|
|
|
|
if (timer == nullptr) {
|
|
LOG_CRITICAL(Kernel, "Callback fired for invalid timer {:016X}", timer_handle);
|
|
return;
|
|
}
|
|
|
|
timer->Signal(cycles_late);
|
|
}
|
|
|
|
void TimersInit() {
|
|
timer_callback_handle_table.Clear();
|
|
timer_callback_event_type = CoreTiming::RegisterEvent("TimerCallback", TimerCallback);
|
|
}
|
|
|
|
void TimersShutdown() {}
|
|
|
|
} // namespace Kernel
|