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Kernel: Convert Timer to (mostly) not use Handles

This commit is contained in:
Yuri Kunde Schlesner 2015-01-23 02:19:33 -02:00
parent 882b6fed75
commit ad80ff1e32
3 changed files with 110 additions and 109 deletions

View file

@ -13,75 +13,54 @@
namespace Kernel { namespace Kernel {
class Timer : public WaitObject { /// The event type of the generic timer callback event
public: static int timer_callback_event_type = -1;
std::string GetTypeName() const override { return "Timer"; }
std::string GetName() const override { return name; }
static const HandleType HANDLE_TYPE = HandleType::Timer; ResultVal<SharedPtr<Timer>> Timer::Create(ResetType reset_type, std::string name) {
HandleType GetHandleType() const override { return HANDLE_TYPE; } SharedPtr<Timer> timer(new Timer);
// TOOD(yuriks): Don't create Handle (see Thread::Create())
ResetType reset_type; ///< The ResetType of this timer CASCADE_RESULT(auto unused, Kernel::g_handle_table.Create(timer));
bool signaled; ///< Whether the timer has been signaled or not
std::string name; ///< Name of timer (optional)
u64 initial_delay; ///< The delay until the timer fires for the first time
u64 interval_delay; ///< The delay until the timer fires after the first time
bool ShouldWait() override {
return !signaled;
}
void Acquire() override {
_assert_msg_(Kernel, !ShouldWait(), "object unavailable!");
}
};
/**
* Creates a timer.
* @param handle Reference to handle for the newly created timer
* @param reset_type ResetType describing how to create timer
* @param name Optional name of timer
* @return Newly created Timer object
*/
static Timer* CreateTimer(Handle& handle, const ResetType reset_type, const std::string& name) {
Timer* timer = new Timer;
handle = Kernel::g_handle_table.Create(timer).ValueOr(INVALID_HANDLE);
timer->reset_type = reset_type; timer->reset_type = reset_type;
timer->signaled = false; timer->signaled = false;
timer->name = name; timer->name = std::move(name);
timer->initial_delay = 0; timer->initial_delay = 0;
timer->interval_delay = 0; timer->interval_delay = 0;
return timer; return MakeResult<SharedPtr<Timer>>(timer);
} }
ResultCode CreateTimer(Handle* handle, const ResetType reset_type, const std::string& name) { bool Timer::ShouldWait() {
CreateTimer(*handle, reset_type, name); return !signaled;
return RESULT_SUCCESS;
} }
ResultCode ClearTimer(Handle handle) { void Timer::Acquire() {
SharedPtr<Timer> timer = Kernel::g_handle_table.Get<Timer>(handle); _assert_msg_(Kernel, !ShouldWait(), "object unavailable!");
if (timer == nullptr)
return InvalidHandle(ErrorModule::Kernel);
timer->signaled = false;
return RESULT_SUCCESS;
} }
/// The event type of the generic timer callback event void Timer::Set(s64 initial, s64 interval) {
static int TimerCallbackEventType = -1; initial_delay = initial;
interval_delay = interval;
u64 initial_microseconds = initial / 1000;
// TODO(yuriks): Figure out a replacement for GetHandle here
CoreTiming::ScheduleEvent(usToCycles(initial_microseconds), timer_callback_event_type,
GetHandle());
}
void Timer::Cancel() {
CoreTiming::UnscheduleEvent(timer_callback_event_type, GetHandle());
}
void Timer::Clear() {
signaled = false;
}
/// The timer callback event, called when a timer is fired /// The timer callback event, called when a timer is fired
static void TimerCallback(u64 timer_handle, int cycles_late) { static void TimerCallback(u64 timer_handle, int cycles_late) {
SharedPtr<Timer> timer = Kernel::g_handle_table.Get<Timer>(timer_handle); SharedPtr<Timer> timer = Kernel::g_handle_table.Get<Timer>(timer_handle);
if (timer == nullptr) { if (timer == nullptr) {
LOG_CRITICAL(Kernel, "Callback fired for invalid timer %u", timer_handle); LOG_CRITICAL(Kernel, "Callback fired for invalid timer %08X", timer_handle);
return; return;
} }
@ -99,36 +78,12 @@ static void TimerCallback(u64 timer_handle, int cycles_late) {
// Reschedule the timer with the interval delay // Reschedule the timer with the interval delay
u64 interval_microseconds = timer->interval_delay / 1000; u64 interval_microseconds = timer->interval_delay / 1000;
CoreTiming::ScheduleEvent(usToCycles(interval_microseconds) - cycles_late, CoreTiming::ScheduleEvent(usToCycles(interval_microseconds) - cycles_late,
TimerCallbackEventType, timer_handle); timer_callback_event_type, timer_handle);
} }
} }
ResultCode SetTimer(Handle handle, s64 initial, s64 interval) {
SharedPtr<Timer> timer = Kernel::g_handle_table.Get<Timer>(handle);
if (timer == nullptr)
return InvalidHandle(ErrorModule::Kernel);
timer->initial_delay = initial;
timer->interval_delay = interval;
u64 initial_microseconds = initial / 1000;
CoreTiming::ScheduleEvent(usToCycles(initial_microseconds), TimerCallbackEventType, handle);
return RESULT_SUCCESS;
}
ResultCode CancelTimer(Handle handle) {
SharedPtr<Timer> timer = Kernel::g_handle_table.Get<Timer>(handle);
if (timer == nullptr)
return InvalidHandle(ErrorModule::Kernel);
CoreTiming::UnscheduleEvent(TimerCallbackEventType, handle);
return RESULT_SUCCESS;
}
void TimersInit() { void TimersInit() {
TimerCallbackEventType = CoreTiming::RegisterEvent("TimerCallback", TimerCallback); timer_callback_event_type = CoreTiming::RegisterEvent("TimerCallback", TimerCallback);
} }
void TimersShutdown() { void TimersShutdown() {

View file

@ -11,37 +11,50 @@
namespace Kernel { namespace Kernel {
/** class Timer : public WaitObject {
* Cancels a timer public:
* @param handle Handle of the timer to cancel /**
*/ * Creates a timer
ResultCode CancelTimer(Handle handle); * @param reset_type ResetType describing how to create the timer
* @param name Optional name of timer
* @return The created Timer
*/
static ResultVal<SharedPtr<Timer>> Create(ResetType reset_type, std::string name = "Unknown");
/** std::string GetTypeName() const override { return "Timer"; }
* Starts a timer with the specified initial delay and interval std::string GetName() const override { return name; }
* @param handle Handle of the timer to start
* @param initial Delay until the timer is first fired
* @param interval Delay until the timer is fired after the first time
*/
ResultCode SetTimer(Handle handle, s64 initial, s64 interval);
/** static const HandleType HANDLE_TYPE = HandleType::Timer;
* Clears a timer HandleType GetHandleType() const override { return HANDLE_TYPE; }
* @param handle Handle of the timer to clear
*/
ResultCode ClearTimer(Handle handle);
/** ResetType reset_type; ///< The ResetType of this timer
* Creates a timer
* @param handle Handle to the newly created Timer object bool signaled; ///< Whether the timer has been signaled or not
* @param reset_type ResetType describing how to create the timer std::string name; ///< Name of timer (optional)
* @param name Optional name of timer
* @return ResultCode of the error u64 initial_delay; ///< The delay until the timer fires for the first time
*/ u64 interval_delay; ///< The delay until the timer fires after the first time
ResultCode CreateTimer(Handle* handle, const ResetType reset_type, const std::string& name="Unknown");
bool ShouldWait() override;
void Acquire() override;
/**
* Starts the timer, with the specified initial delay and interval.
* @param initial Delay until the timer is first fired
* @param interval Delay until the timer is fired after the first time
*/
void Set(s64 initial, s64 interval);
void Cancel();
void Clear();
private:
Timer() = default;
};
/// Initializes the required variables for timers /// Initializes the required variables for timers
void TimersInit(); void TimersInit();
/// Tears down the timer variables /// Tears down the timer variables
void TimersShutdown(); void TimersShutdown();
} // namespace } // namespace

View file

@ -479,28 +479,61 @@ static Result ClearEvent(Handle evt) {
/// Creates a timer /// Creates a timer
static Result CreateTimer(Handle* handle, u32 reset_type) { static Result CreateTimer(Handle* handle, u32 reset_type) {
ResultCode res = Kernel::CreateTimer(handle, static_cast<ResetType>(reset_type)); using Kernel::Timer;
LOG_TRACE(Kernel_SVC, "called reset_type=0x%08X : created handle=0x%08X",
reset_type, *handle); auto timer_res = Timer::Create(static_cast<ResetType>(reset_type));
return res.raw; if (timer_res.Failed())
return timer_res.Code().raw;
auto handle_res = Kernel::g_handle_table.Create(timer_res.MoveFrom());
if (handle_res.Failed())
return handle_res.Code().raw;
*handle = handle_res.MoveFrom();
LOG_TRACE(Kernel_SVC, "called reset_type=0x%08X : created handle=0x%08X", reset_type, *handle);
return RESULT_SUCCESS.raw;
} }
/// Clears a timer /// Clears a timer
static Result ClearTimer(Handle handle) { static Result ClearTimer(Handle handle) {
using Kernel::Timer;
LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle); LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle);
return Kernel::ClearTimer(handle).raw;
SharedPtr<Timer> timer = Kernel::g_handle_table.Get<Timer>(handle);
if (timer == nullptr)
return InvalidHandle(ErrorModule::Kernel).raw;
timer->Clear();
return RESULT_SUCCESS.raw;
} }
/// Starts a timer /// Starts a timer
static Result SetTimer(Handle handle, s64 initial, s64 interval) { static Result SetTimer(Handle handle, s64 initial, s64 interval) {
using Kernel::Timer;
LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle); LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle);
return Kernel::SetTimer(handle, initial, interval).raw;
SharedPtr<Timer> timer = Kernel::g_handle_table.Get<Timer>(handle);
if (timer == nullptr)
return InvalidHandle(ErrorModule::Kernel).raw;
timer->Set(initial, interval);
return RESULT_SUCCESS.raw;
} }
/// Cancels a timer /// Cancels a timer
static Result CancelTimer(Handle handle) { static Result CancelTimer(Handle handle) {
using Kernel::Timer;
LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle); LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle);
return Kernel::CancelTimer(handle).raw;
SharedPtr<Timer> timer = Kernel::g_handle_table.Get<Timer>(handle);
if (timer == nullptr)
return InvalidHandle(ErrorModule::Kernel).raw;
timer->Cancel();
return RESULT_SUCCESS.raw;
} }
/// Sleep the current thread /// Sleep the current thread