kernel: Divide Event into ReadableEvent and WritableEvent

More hardware accurate. On the actual system, there is a differentiation between the signaler and signalee, they form a client/server relationship much like ServerPort and ClientPort.
This commit is contained in:
Zach Hilman 2018-11-26 18:31:22 -05:00
parent d92989e787
commit c713383816
6 changed files with 210 additions and 61 deletions

View file

@ -97,8 +97,6 @@ add_library(core STATIC
hle/kernel/client_session.cpp
hle/kernel/client_session.h
hle/kernel/errors.h
hle/kernel/event.cpp
hle/kernel/event.h
hle/kernel/handle_table.cpp
hle/kernel/handle_table.h
hle/kernel/hle_ipc.cpp
@ -111,6 +109,8 @@ add_library(core STATIC
hle/kernel/object.h
hle/kernel/process.cpp
hle/kernel/process.h
hle/kernel/readable_event.cpp
hle/kernel/readable_event.h
hle/kernel/resource_limit.cpp
hle/kernel/resource_limit.h
hle/kernel/scheduler.cpp
@ -133,6 +133,8 @@ add_library(core STATIC
hle/kernel/vm_manager.h
hle/kernel/wait_object.cpp
hle/kernel/wait_object.h
hle/kernel/writable_event.cpp
hle/kernel/writable_event.h
hle/lock.cpp
hle/lock.h
hle/result.h

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@ -1,53 +0,0 @@
// 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/event.h"
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/thread.h"
namespace Kernel {
Event::Event(KernelCore& kernel) : WaitObject{kernel} {}
Event::~Event() = default;
SharedPtr<Event> Event::Create(KernelCore& kernel, ResetType reset_type, std::string name) {
SharedPtr<Event> evt(new Event(kernel));
evt->signaled = false;
evt->reset_type = reset_type;
evt->name = std::move(name);
return evt;
}
bool Event::ShouldWait(Thread* thread) const {
return !signaled;
}
void Event::Acquire(Thread* thread) {
ASSERT_MSG(!ShouldWait(thread), "object unavailable!");
if (reset_type == ResetType::OneShot)
signaled = false;
}
void Event::Signal() {
signaled = true;
WakeupAllWaitingThreads();
}
void Event::Clear() {
signaled = false;
}
void Event::WakeupAllWaitingThreads() {
WaitObject::WakeupAllWaitingThreads();
if (reset_type == ResetType::Pulse)
signaled = false;
}
} // namespace Kernel

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@ -0,0 +1,48 @@
// 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/object.h"
#include "core/hle/kernel/readable_event.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/writable_event.h"
namespace Kernel {
ReadableEvent::ReadableEvent(KernelCore& kernel) : WaitObject{kernel} {}
ReadableEvent::~ReadableEvent() = default;
bool ReadableEvent::ShouldWait(Thread* thread) const {
return !writable_event->IsSignaled();
}
void ReadableEvent::Acquire(Thread* thread) {
ASSERT_MSG(!ShouldWait(thread), "object unavailable!");
writable_event->ResetOnAcquire();
}
void ReadableEvent::AddWaitingThread(SharedPtr<Thread> thread) {
writable_event->AddWaitingThread(thread);
}
void ReadableEvent::RemoveWaitingThread(Thread* thread) {
writable_event->RemoveWaitingThread(thread);
}
void ReadableEvent::Signal() {
writable_event->Signal();
}
void ReadableEvent::Clear() {
writable_event->Clear();
}
void ReadableEvent::WakeupAllWaitingThreads() {
writable_event->WakeupAllWaitingThreads();
writable_event->ResetOnWakeup();
}
} // namespace Kernel

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@ -0,0 +1,56 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/wait_object.h"
namespace Kernel {
class KernelCore;
class WritableEvent;
class ReadableEvent final : public WaitObject {
friend class WritableEvent;
public:
~ReadableEvent() override;
std::string GetTypeName() const override {
return "ReadableEvent";
}
std::string GetName() const override {
return name;
}
static const HandleType HANDLE_TYPE = HandleType::Event;
HandleType GetHandleType() const override {
return HANDLE_TYPE;
}
bool ShouldWait(Thread* thread) const override;
void Acquire(Thread* thread) override;
void WakeupAllWaitingThreads() override;
void AddWaitingThread(SharedPtr<Thread> thread) override;
void RemoveWaitingThread(Thread* thread) override;
void Signal();
void Clear();
SharedPtr<WritableEvent> PromoteToWritable() const {
return writable_event;
}
private:
explicit ReadableEvent(KernelCore& kernel);
SharedPtr<WritableEvent> writable_event; ///< WritableEvent associated with this ReadableEvent
std::string name; ///< Name of event (optional)
};
} // namespace Kernel

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@ -0,0 +1,81 @@
// 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

View file

@ -11,20 +11,33 @@
namespace Kernel {
class KernelCore;
class ReadableEvent;
class Event final : public WaitObject {
class WritableEvent final : public WaitObject {
public:
~WritableEvent() override;
/**
* Creates an event
* @param kernel The kernel instance to create this event under.
* @param reset_type ResetType describing how to create event
* @param name Optional name of event
*/
static SharedPtr<Event> Create(KernelCore& kernel, ResetType reset_type,
std::string name = "Unknown");
static std::tuple<SharedPtr<WritableEvent>, SharedPtr<ReadableEvent>> CreateEventPair(
KernelCore& kernel, ResetType reset_type, std::string name = "Unknown");
/**
* Creates an event and registers it in the kernel's named event table
* @param kernel The kernel instance to create this event under.
* @param reset_type ResetType describing how to create event
* @param name name of event
*/
static SharedPtr<WritableEvent> CreateRegisteredEventPair(KernelCore& kernel,
ResetType reset_type,
std::string name);
std::string GetTypeName() const override {
return "Event";
return "WritableEvent";
}
std::string GetName() const override {
return name;
@ -46,10 +59,12 @@ public:
void Signal();
void Clear();
void ResetOnAcquire();
void ResetOnWakeup();
bool IsSignaled() const;
private:
explicit Event(KernelCore& kernel);
~Event() override;
explicit WritableEvent(KernelCore& kernel);
ResetType reset_type; ///< Current ResetType