From f67039c067282e560175b1b346405e898b40e993 Mon Sep 17 00:00:00 2001
From: David Marcec <dmarcecguzman@gmail.com>
Date: Wed, 26 Jun 2019 16:52:34 +1000
Subject: Addressed issues

---
 src/core/hle/service/time/interface.h           |  2 ++
 src/core/hle/service/time/time.cpp              |  3 +-
 src/core/hle/service/time/time.h                |  1 +
 src/core/hle/service/time/time_sharedmemory.cpp | 47 +++++++++++++++----------
 src/core/hle/service/time/time_sharedmemory.h   | 37 ++++++++++---------
 5 files changed, 53 insertions(+), 37 deletions(-)

(limited to 'src/core/hle/service/time')

diff --git a/src/core/hle/service/time/interface.h b/src/core/hle/service/time/interface.h
index 407acf960..bdf0883e2 100644
--- a/src/core/hle/service/time/interface.h
+++ b/src/core/hle/service/time/interface.h
@@ -7,7 +7,9 @@
 #include "core/hle/service/time/time.h"
 
 namespace Service::Time {
+
 class SharedMemory;
+
 class Time final : public Module::Interface {
 public:
     explicit Time(std::shared_ptr<Module> time, std::shared_ptr<SharedMemory> shared_memory,
diff --git a/src/core/hle/service/time/time.cpp b/src/core/hle/service/time/time.cpp
index 10a7e6c97..ae6446204 100644
--- a/src/core/hle/service/time/time.cpp
+++ b/src/core/hle/service/time/time.cpp
@@ -418,7 +418,8 @@ void InstallInterfaces(Core::System& system) {
 
     std::make_shared<Time>(time, shared_mem, "time:a")->InstallAsService(system.ServiceManager());
     std::make_shared<Time>(time, shared_mem, "time:s")->InstallAsService(system.ServiceManager());
-    std::make_shared<Time>(time, shared_mem, "time:u")->InstallAsService(system.ServiceManager());
+    std::make_shared<Time>(std::move(time), shared_mem, "time:u")
+        ->InstallAsService(system.ServiceManager());
 }
 
 } // namespace Service::Time
diff --git a/src/core/hle/service/time/time.h b/src/core/hle/service/time/time.h
index 6a05a22b9..e0708f856 100644
--- a/src/core/hle/service/time/time.h
+++ b/src/core/hle/service/time/time.h
@@ -9,6 +9,7 @@
 #include "core/hle/service/service.h"
 
 namespace Service::Time {
+
 class SharedMemory;
 
 struct LocationName {
diff --git a/src/core/hle/service/time/time_sharedmemory.cpp b/src/core/hle/service/time/time_sharedmemory.cpp
index 650c9af7a..bfc81b83c 100644
--- a/src/core/hle/service/time/time_sharedmemory.cpp
+++ b/src/core/hle/service/time/time_sharedmemory.cpp
@@ -1,4 +1,4 @@
-// Copyright 2018 yuzu emulator team
+// Copyright 2019 yuzu emulator team
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
@@ -6,15 +6,17 @@
 #include "core/hle/service/time/time_sharedmemory.h"
 
 namespace Service::Time {
+const std::size_t SHARED_MEMORY_SIZE = 0x1000;
 
 SharedMemory::SharedMemory(Core::System& system) : system(system) {
     shared_memory_holder = Kernel::SharedMemory::Create(
         system.Kernel(), nullptr, SHARED_MEMORY_SIZE, Kernel::MemoryPermission::ReadWrite,
         Kernel::MemoryPermission::Read, 0, Kernel::MemoryRegion::BASE, "Time:SharedMemory");
-    shared_memory_format = reinterpret_cast<Format*>(shared_memory_holder->GetPointer());
-    shared_memory_format->format_version =
-        14; // Seems static from 1.0.0 -> 8.1.0. Specific games seem to check this value and crash
-            // if it's set to anything else
+
+    // Seems static from 1.0.0 -> 8.1.0. Specific games seem to check this value and crash
+    // if it's set to anything else
+    shared_memory_format.format_version = 14;
+    std::memcpy(shared_memory_holder->GetPointer(), &shared_memory_format, sizeof(Format));
 }
 
 SharedMemory::~SharedMemory() = default;
@@ -24,36 +26,43 @@ Kernel::SharedPtr<Kernel::SharedMemory> SharedMemory::GetSharedMemoryHolder() co
 }
 
 void SharedMemory::SetStandardSteadyClockTimepoint(const SteadyClockTimePoint& timepoint) {
-    shared_memory_format->standard_steady_clock_timepoint.StoreData(timepoint);
+    shared_memory_format.standard_steady_clock_timepoint.StoreData(
+        shared_memory_holder->GetPointer(), timepoint);
 }
 
 void SharedMemory::SetStandardLocalSystemClockContext(const SystemClockContext& context) {
-    shared_memory_format->standard_local_system_clock_context.StoreData(context);
+    shared_memory_format.standard_local_system_clock_context.StoreData(
+        shared_memory_holder->GetPointer(), context);
 }
 
 void SharedMemory::SetStandardNetworkSystemClockContext(const SystemClockContext& context) {
-    shared_memory_format->standard_network_system_clock_context.StoreData(context);
+    shared_memory_format.standard_network_system_clock_context.StoreData(
+        shared_memory_holder->GetPointer(), context);
 }
 
-void SharedMemory::SetStandardUserSystemClockAutomaticCorrectionEnabled(const bool enabled) {
-    shared_memory_format->standard_user_system_clock_automatic_correction.StoreData(enabled ? 1
-                                                                                            : 0);
+void SharedMemory::SetStandardUserSystemClockAutomaticCorrectionEnabled(bool enabled) {
+    shared_memory_format.standard_user_system_clock_automatic_correction.StoreData(
+        shared_memory_holder->GetPointer(), enabled);
 }
 
-SteadyClockTimePoint SharedMemory::GetStandardSteadyClockTimepoint() const {
-    return shared_memory_format->standard_steady_clock_timepoint.ReadData();
+SteadyClockTimePoint SharedMemory::GetStandardSteadyClockTimepoint() {
+    return shared_memory_format.standard_steady_clock_timepoint.ReadData(
+        shared_memory_holder->GetPointer());
 }
 
-SystemClockContext SharedMemory::GetStandardLocalSystemClockContext() const {
-    return shared_memory_format->standard_local_system_clock_context.ReadData();
+SystemClockContext SharedMemory::GetStandardLocalSystemClockContext() {
+    return shared_memory_format.standard_local_system_clock_context.ReadData(
+        shared_memory_holder->GetPointer());
 }
 
-SystemClockContext SharedMemory::GetStandardNetworkSystemClockContext() const {
-    return shared_memory_format->standard_network_system_clock_context.ReadData();
+SystemClockContext SharedMemory::GetStandardNetworkSystemClockContext() {
+    return shared_memory_format.standard_network_system_clock_context.ReadData(
+        shared_memory_holder->GetPointer());
 }
 
-bool SharedMemory::GetStandardUserSystemClockAutomaticCorrectionEnabled() const {
-    return shared_memory_format->standard_user_system_clock_automatic_correction.ReadData() > 0;
+bool SharedMemory::GetStandardUserSystemClockAutomaticCorrectionEnabled() {
+    return shared_memory_format.standard_user_system_clock_automatic_correction.ReadData(
+        shared_memory_holder->GetPointer());
 }
 
 } // namespace Service::Time
diff --git a/src/core/hle/service/time/time_sharedmemory.h b/src/core/hle/service/time/time_sharedmemory.h
index ab536005c..cb8253541 100644
--- a/src/core/hle/service/time/time_sharedmemory.h
+++ b/src/core/hle/service/time/time_sharedmemory.h
@@ -1,4 +1,4 @@
-// Copyright 2018 yuzu emulator team
+// Copyright 2019 yuzu emulator team
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
@@ -11,7 +11,7 @@
 namespace Service::Time {
 class SharedMemory {
 public:
-    SharedMemory(Core::System& system);
+    explicit SharedMemory(Core::System& system);
     ~SharedMemory();
 
     // Return the shared memory handle
@@ -21,51 +21,54 @@ public:
     void SetStandardSteadyClockTimepoint(const SteadyClockTimePoint& timepoint);
     void SetStandardLocalSystemClockContext(const SystemClockContext& context);
     void SetStandardNetworkSystemClockContext(const SystemClockContext& context);
-    void SetStandardUserSystemClockAutomaticCorrectionEnabled(const bool enabled);
+    void SetStandardUserSystemClockAutomaticCorrectionEnabled(bool enabled);
 
     // Pull from memory barriers in the shared memory
-    SteadyClockTimePoint GetStandardSteadyClockTimepoint() const;
-    SystemClockContext GetStandardLocalSystemClockContext() const;
-    SystemClockContext GetStandardNetworkSystemClockContext() const;
-    bool GetStandardUserSystemClockAutomaticCorrectionEnabled() const;
+    SteadyClockTimePoint GetStandardSteadyClockTimepoint();
+    SystemClockContext GetStandardLocalSystemClockContext();
+    SystemClockContext GetStandardNetworkSystemClockContext();
+    bool GetStandardUserSystemClockAutomaticCorrectionEnabled();
 
     // TODO(ogniK): We have to properly simulate memory barriers, how are we going to do this?
-    template <typename T>
+    template <typename T, std::size_t Offset>
     struct MemoryBarrier {
+        static_assert(std::is_trivially_constructible_v<T>, "T must be trivially constructable");
         u32_le read_attempt{};
-        T data[2]{};
+        std::array<T, 2> data{};
 
         // These are not actually memory barriers at the moment as we don't have multicore and all
         // HLE is mutexed. This will need to properly be implemented when we start updating the time
         // points on threads. As of right now, we'll be updated both values synchronously and just
         // incrementing the read_attempt to indicate that we waited.
-        void StoreData(T data_to_store) {
+        void StoreData(u8* shared_memory, T data_to_store) {
+            std::memcpy(this, shared_memory + Offset, sizeof(*this));
             read_attempt++;
             data[read_attempt & 1] = data_to_store;
+            std::memcpy(shared_memory + Offset, this, sizeof(*this));
         }
 
         // For reading we're just going to read the last stored value. If there was no value stored
         // it will just end up reading an empty value as intended.
-        T ReadData() const {
+        T ReadData(u8* shared_memory) {
+            std::memcpy(this, shared_memory + Offset, sizeof(*this));
             return data[(read_attempt - 1) & 1];
         }
     };
 
     // Shared memory format
     struct Format {
-        MemoryBarrier<SteadyClockTimePoint> standard_steady_clock_timepoint;
-        MemoryBarrier<SystemClockContext> standard_local_system_clock_context;
-        MemoryBarrier<SystemClockContext> standard_network_system_clock_context;
-        MemoryBarrier<u8> standard_user_system_clock_automatic_correction;
+        MemoryBarrier<SteadyClockTimePoint, 0x0> standard_steady_clock_timepoint;
+        MemoryBarrier<SystemClockContext, 0x38> standard_local_system_clock_context;
+        MemoryBarrier<SystemClockContext, 0x80> standard_network_system_clock_context;
+        MemoryBarrier<bool, 0xc8> standard_user_system_clock_automatic_correction;
         u32_le format_version;
     };
     static_assert(sizeof(Format) == 0xd8, "Format is an invalid size");
 
 private:
-    const std::size_t SHARED_MEMORY_SIZE = 0x1000;
     Kernel::SharedPtr<Kernel::SharedMemory> shared_memory_holder{};
     Core::System& system;
-    Format* shared_memory_format;
+    Format shared_memory_format{};
 };
 
 } // namespace Service::Time
-- 
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