125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
// Copyright 2014 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <map>
|
|
#include <algorithm>
|
|
#include <vector>
|
|
|
|
#include "common/common.h"
|
|
|
|
#include "core/hle/kernel/kernel.h"
|
|
#include "core/hle/kernel/event.h"
|
|
#include "core/hle/kernel/thread.h"
|
|
|
|
namespace Kernel {
|
|
|
|
class Event : public WaitObject {
|
|
public:
|
|
std::string GetTypeName() const override { return "Event"; }
|
|
std::string GetName() const override { return name; }
|
|
|
|
static const HandleType HANDLE_TYPE = HandleType::Event;
|
|
HandleType GetHandleType() const override { return HANDLE_TYPE; }
|
|
|
|
ResetType intitial_reset_type; ///< ResetType specified at Event initialization
|
|
ResetType reset_type; ///< Current ResetType
|
|
|
|
bool locked; ///< Event signal wait
|
|
std::string name; ///< Name of event (optional)
|
|
|
|
ResultVal<bool> WaitSynchronization() override {
|
|
bool wait = locked;
|
|
if (locked) {
|
|
AddWaitingThread(GetCurrentThread());
|
|
Kernel::WaitCurrentThread(WAITTYPE_EVENT, this);
|
|
}
|
|
if (reset_type != RESETTYPE_STICKY) {
|
|
locked = true;
|
|
}
|
|
return MakeResult<bool>(wait);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Changes whether an event is locked or not
|
|
* @param handle Handle to event to change
|
|
* @param locked Boolean locked value to set event
|
|
* @return Result of operation, 0 on success, otherwise error code
|
|
*/
|
|
ResultCode SetEventLocked(const Handle handle, const bool locked) {
|
|
Event* evt = g_handle_table.Get<Event>(handle).get();
|
|
if (evt == nullptr) return InvalidHandle(ErrorModule::Kernel);
|
|
|
|
evt->locked = locked;
|
|
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* Signals an event
|
|
* @param handle Handle to event to signal
|
|
* @return Result of operation, 0 on success, otherwise error code
|
|
*/
|
|
ResultCode SignalEvent(const Handle handle) {
|
|
Event* evt = g_handle_table.Get<Event>(handle).get();
|
|
if (evt == nullptr) return InvalidHandle(ErrorModule::Kernel);
|
|
|
|
// If any thread is signalled awake by this event, assume the event was "caught" and reset
|
|
// the event. This will result in the next thread waiting on the event to block. Otherwise,
|
|
// the event will not be reset, and the next thread to call WaitSynchronization on it will
|
|
// not block. Not sure if this is correct behavior, but it seems to work.
|
|
// TODO(bunnei): Test how this works on hardware
|
|
evt->locked = evt->ResumeAllWaitingThreads();
|
|
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* Clears an event
|
|
* @param handle Handle to event to clear
|
|
* @return Result of operation, 0 on success, otherwise error code
|
|
*/
|
|
ResultCode ClearEvent(Handle handle) {
|
|
Event* evt = g_handle_table.Get<Event>(handle).get();
|
|
if (evt == nullptr) return InvalidHandle(ErrorModule::Kernel);
|
|
|
|
evt->locked = true;
|
|
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* Creates an event
|
|
* @param handle Reference to handle for the newly created mutex
|
|
* @param reset_type ResetType describing how to create event
|
|
* @param name Optional name of event
|
|
* @return Newly created Event object
|
|
*/
|
|
Event* CreateEvent(Handle& handle, const ResetType reset_type, const std::string& name) {
|
|
Event* evt = new Event;
|
|
|
|
// TOOD(yuriks): Fix error reporting
|
|
handle = Kernel::g_handle_table.Create(evt).ValueOr(INVALID_HANDLE);
|
|
|
|
evt->locked = true;
|
|
evt->reset_type = evt->intitial_reset_type = reset_type;
|
|
evt->name = name;
|
|
|
|
return evt;
|
|
}
|
|
|
|
/**
|
|
* Creates an event
|
|
* @param reset_type ResetType describing how to create event
|
|
* @param name Optional name of event
|
|
* @return Handle to newly created Event object
|
|
*/
|
|
Handle CreateEvent(const ResetType reset_type, const std::string& name) {
|
|
Handle handle;
|
|
Event* evt = CreateEvent(handle, reset_type, name);
|
|
return handle;
|
|
}
|
|
|
|
} // namespace
|