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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include "common/assert.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/readable_event.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/writable_event.h"
namespace Kernel {
WritableEvent::WritableEvent(KernelCore& kernel) : WaitObject{kernel} {}
WritableEvent::~WritableEvent() = default;
std::tuple<SharedPtr<WritableEvent>, SharedPtr<ReadableEvent>> WritableEvent::CreateEventPair(
KernelCore& kernel, ResetType reset_type, std::string name) {
SharedPtr<WritableEvent> writable_event(new WritableEvent(kernel));
SharedPtr<ReadableEvent> readable_event(new ReadableEvent(kernel));
writable_event->name = name + ":Writable";
writable_event->signaled = false;
writable_event->reset_type = reset_type;
readable_event->name = name + ":Readable";
readable_event->writable_event = writable_event;
return std::make_tuple(std::move(writable_event), std::move(readable_event));
}
SharedPtr<WritableEvent> WritableEvent::CreateRegisteredEventPair(KernelCore& kernel,
ResetType reset_type,
std::string name) {
auto [writable_event, readable_event] = CreateEventPair(kernel, reset_type, name);
kernel.AddNamedEvent(name, std::move(readable_event));
return std::move(writable_event);
}
bool WritableEvent::ShouldWait(Thread* thread) const {
return !signaled;
}
void WritableEvent::Acquire(Thread* thread) {
ASSERT_MSG(!ShouldWait(thread), "object unavailable!");
if (reset_type == ResetType::OneShot)
signaled = false;
}
void WritableEvent::Signal() {
signaled = true;
WakeupAllWaitingThreads();
}
void WritableEvent::Clear() {
signaled = false;
}
void WritableEvent::ResetOnAcquire() {
if (reset_type == ResetType::OneShot)
Clear();
}
void WritableEvent::ResetOnWakeup() {
if (reset_type == ResetType::Pulse)
Clear();
}
bool WritableEvent::IsSignaled() const {
return signaled;
}
void WritableEvent::WakeupAllWaitingThreads() {
WaitObject::WakeupAllWaitingThreads();
if (reset_type == ResetType::Pulse)
signaled = false;
}
} // namespace Kernel
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