From c73841500a7bf98f9f4006d25507b7b596257cbd Mon Sep 17 00:00:00 2001 From: bunnei Date: Fri, 17 Dec 2021 16:05:51 -0800 Subject: core: hle: Remove global HLE lock. - This was added early on as a hack to protect against some concurrency issues. - It's not clear that this serves any purpose anymore, and if it does, individual components should be fixed rather than using a global recursive mutex. --- src/core/CMakeLists.txt | 2 -- src/core/hle/kernel/k_process.cpp | 2 -- src/core/hle/kernel/svc.cpp | 9 --------- src/core/hle/lock.cpp | 9 --------- src/core/hle/lock.h | 18 ------------------ src/core/hle/service/bcat/backend/backend.cpp | 12 +----------- src/core/hle/service/bcat/backend/backend.h | 5 ----- src/core/hle/service/nfp/nfp.cpp | 2 -- 8 files changed, 1 insertion(+), 58 deletions(-) delete mode 100644 src/core/hle/lock.cpp delete mode 100644 src/core/hle/lock.h (limited to 'src/core') diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt index 49bed614a..698c4f912 100644 --- a/src/core/CMakeLists.txt +++ b/src/core/CMakeLists.txt @@ -265,8 +265,6 @@ add_library(core STATIC hle/kernel/svc_wrap.h hle/kernel/time_manager.cpp hle/kernel/time_manager.h - hle/lock.cpp - hle/lock.h hle/result.h hle/service/acc/acc.cpp hle/service/acc/acc.h diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp index 90dda40dc..aee313995 100644 --- a/src/core/hle/kernel/k_process.cpp +++ b/src/core/hle/kernel/k_process.cpp @@ -28,7 +28,6 @@ #include "core/hle/kernel/k_thread.h" #include "core/hle/kernel/kernel.h" #include "core/hle/kernel/svc_results.h" -#include "core/hle/lock.h" #include "core/memory.h" namespace Kernel { @@ -543,7 +542,6 @@ void KProcess::FreeTLSRegion(VAddr tls_address) { } void KProcess::LoadModule(CodeSet code_set, VAddr base_addr) { - std::lock_guard lock{HLE::g_hle_lock}; const auto ReprotectSegment = [&](const CodeSet::Segment& segment, KMemoryPermission permission) { page_table->SetProcessMemoryPermission(segment.addr + base_addr, segment.size, permission); diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index a9f7438ea..bb9475c56 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -41,7 +41,6 @@ #include "core/hle/kernel/svc_results.h" #include "core/hle/kernel/svc_types.h" #include "core/hle/kernel/svc_wrap.h" -#include "core/hle/lock.h" #include "core/hle/result.h" #include "core/memory.h" #include "core/reporter.h" @@ -137,7 +136,6 @@ enum class ResourceLimitValueType { /// Set the process heap to a given Size. It can both extend and shrink the heap. static ResultCode SetHeapSize(Core::System& system, VAddr* heap_addr, u64 heap_size) { - std::lock_guard lock{HLE::g_hle_lock}; LOG_TRACE(Kernel_SVC, "called, heap_size=0x{:X}", heap_size); // Size must be a multiple of 0x200000 (2MB) and be equal to or less than 8GB. @@ -168,7 +166,6 @@ static ResultCode SetHeapSize32(Core::System& system, u32* heap_addr, u32 heap_s static ResultCode SetMemoryAttribute(Core::System& system, VAddr address, u64 size, u32 mask, u32 attribute) { - std::lock_guard lock{HLE::g_hle_lock}; LOG_DEBUG(Kernel_SVC, "called, address=0x{:016X}, size=0x{:X}, mask=0x{:08X}, attribute=0x{:08X}", address, size, mask, attribute); @@ -212,7 +209,6 @@ static ResultCode SetMemoryAttribute32(Core::System& system, u32 address, u32 si /// Maps a memory range into a different range. static ResultCode MapMemory(Core::System& system, VAddr dst_addr, VAddr src_addr, u64 size) { - std::lock_guard lock{HLE::g_hle_lock}; LOG_TRACE(Kernel_SVC, "called, dst_addr=0x{:X}, src_addr=0x{:X}, size=0x{:X}", dst_addr, src_addr, size); @@ -232,7 +228,6 @@ static ResultCode MapMemory32(Core::System& system, u32 dst_addr, u32 src_addr, /// Unmaps a region that was previously mapped with svcMapMemory static ResultCode UnmapMemory(Core::System& system, VAddr dst_addr, VAddr src_addr, u64 size) { - std::lock_guard lock{HLE::g_hle_lock}; LOG_TRACE(Kernel_SVC, "called, dst_addr=0x{:X}, src_addr=0x{:X}, size=0x{:X}", dst_addr, src_addr, size); @@ -642,7 +637,6 @@ static void OutputDebugString(Core::System& system, VAddr address, u64 len) { /// Gets system/memory information for the current process static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle handle, u64 info_sub_id) { - std::lock_guard lock{HLE::g_hle_lock}; LOG_TRACE(Kernel_SVC, "called info_id=0x{:X}, info_sub_id=0x{:X}, handle=0x{:08X}", info_id, info_sub_id, handle); @@ -924,7 +918,6 @@ static ResultCode GetInfo32(Core::System& system, u32* result_low, u32* result_h /// Maps memory at a desired address static ResultCode MapPhysicalMemory(Core::System& system, VAddr addr, u64 size) { - std::lock_guard lock{HLE::g_hle_lock}; LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size); if (!Common::Is4KBAligned(addr)) { @@ -978,7 +971,6 @@ static ResultCode MapPhysicalMemory32(Core::System& system, u32 addr, u32 size) /// Unmaps memory previously mapped via MapPhysicalMemory static ResultCode UnmapPhysicalMemory(Core::System& system, VAddr addr, u64 size) { - std::lock_guard lock{HLE::g_hle_lock}; LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size); if (!Common::Is4KBAligned(addr)) { @@ -1520,7 +1512,6 @@ static ResultCode ControlCodeMemory(Core::System& system, Handle code_memory_han static ResultCode QueryProcessMemory(Core::System& system, VAddr memory_info_address, VAddr page_info_address, Handle process_handle, VAddr address) { - std::lock_guard lock{HLE::g_hle_lock}; LOG_TRACE(Kernel_SVC, "called process=0x{:08X} address={:X}", process_handle, address); const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable(); KScopedAutoObject process = handle_table.GetObject(process_handle); diff --git a/src/core/hle/lock.cpp b/src/core/hle/lock.cpp deleted file mode 100644 index be4bfce3b..000000000 --- a/src/core/hle/lock.cpp +++ /dev/null @@ -1,9 +0,0 @@ -// Copyright 2017 Citra Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include - -namespace HLE { -std::recursive_mutex g_hle_lock; -} diff --git a/src/core/hle/lock.h b/src/core/hle/lock.h deleted file mode 100644 index 5c99fe996..000000000 --- a/src/core/hle/lock.h +++ /dev/null @@ -1,18 +0,0 @@ -// Copyright 2017 Citra Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#pragma once - -#include - -namespace HLE { -/* - * Synchronizes access to the internal HLE kernel structures, it is acquired when a guest - * application thread performs a syscall. It should be acquired by any host threads that read or - * modify the HLE kernel state. Note: Any operation that directly or indirectly reads from or writes - * to the emulated memory is not protected by this mutex, and should be avoided in any threads other - * than the CPU thread. - */ -extern std::recursive_mutex g_hle_lock; -} // namespace HLE diff --git a/src/core/hle/service/bcat/backend/backend.cpp b/src/core/hle/service/bcat/backend/backend.cpp index 4c7d3bb6e..ee49edbb9 100644 --- a/src/core/hle/service/bcat/backend/backend.cpp +++ b/src/core/hle/service/bcat/backend/backend.cpp @@ -6,7 +6,6 @@ #include "common/logging/log.h" #include "core/core.h" #include "core/hle/kernel/k_event.h" -#include "core/hle/lock.h" #include "core/hle/service/bcat/backend/backend.h" namespace Service::BCAT { @@ -29,10 +28,6 @@ DeliveryCacheProgressImpl& ProgressServiceBackend::GetImpl() { return impl; } -void ProgressServiceBackend::SetNeedHLELock(bool need) { - need_hle_lock = need; -} - void ProgressServiceBackend::SetTotalSize(u64 size) { impl.total_bytes = size; SignalUpdate(); @@ -88,12 +83,7 @@ void ProgressServiceBackend::FinishDownload(ResultCode result) { } void ProgressServiceBackend::SignalUpdate() { - if (need_hle_lock) { - std::lock_guard lock(HLE::g_hle_lock); - update_event->GetWritableEvent().Signal(); - } else { - update_event->GetWritableEvent().Signal(); - } + update_event->GetWritableEvent().Signal(); } Backend::Backend(DirectoryGetter getter) : dir_getter(std::move(getter)) {} diff --git a/src/core/hle/service/bcat/backend/backend.h b/src/core/hle/service/bcat/backend/backend.h index 59c6d4740..63833c927 100644 --- a/src/core/hle/service/bcat/backend/backend.h +++ b/src/core/hle/service/bcat/backend/backend.h @@ -71,10 +71,6 @@ class ProgressServiceBackend { public: ~ProgressServiceBackend(); - // Clients should call this with true if any of the functions are going to be called from a - // non-HLE thread and this class need to lock the hle mutex. (default is false) - void SetNeedHLELock(bool need); - // Sets the number of bytes total in the entire download. void SetTotalSize(u64 size); @@ -109,7 +105,6 @@ private: DeliveryCacheProgressImpl impl{}; Kernel::KEvent* update_event; - bool need_hle_lock = false; }; // A class representing an abstract backend for BCAT functionality. diff --git a/src/core/hle/service/nfp/nfp.cpp b/src/core/hle/service/nfp/nfp.cpp index 693ffc71a..761d0d3c6 100644 --- a/src/core/hle/service/nfp/nfp.cpp +++ b/src/core/hle/service/nfp/nfp.cpp @@ -9,7 +9,6 @@ #include "core/core.h" #include "core/hle/ipc_helpers.h" #include "core/hle/kernel/k_event.h" -#include "core/hle/lock.h" #include "core/hle/service/nfp/nfp.h" #include "core/hle/service/nfp/nfp_user.h" @@ -337,7 +336,6 @@ void Module::Interface::CreateUserInterface(Kernel::HLERequestContext& ctx) { } bool Module::Interface::LoadAmiibo(const std::vector& buffer) { - std::lock_guard lock{HLE::g_hle_lock}; if (buffer.size() < sizeof(AmiiboFile)) { return false; } -- cgit v1.2.3