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-rw-r--r--src/core/hle/kernel/address_arbiter.cpp117
-rw-r--r--src/core/hle/kernel/address_arbiter.h68
-rw-r--r--src/core/hle/kernel/kernel.cpp11
-rw-r--r--src/core/hle/kernel/kernel.h7
-rw-r--r--src/core/hle/kernel/svc.cpp14
5 files changed, 135 insertions, 82 deletions
diff --git a/src/core/hle/kernel/address_arbiter.cpp b/src/core/hle/kernel/address_arbiter.cpp
index a250d088d..f14283cca 100644
--- a/src/core/hle/kernel/address_arbiter.cpp
+++ b/src/core/hle/kernel/address_arbiter.cpp
@@ -9,6 +9,7 @@
#include "common/common_types.h"
#include "core/core.h"
#include "core/core_cpu.h"
+#include "core/hle/kernel/address_arbiter.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/process.h"
@@ -17,53 +18,10 @@
#include "core/hle/result.h"
#include "core/memory.h"
-namespace Kernel::AddressArbiter {
-
-// Performs actual address waiting logic.
-static ResultCode WaitForAddress(VAddr address, s64 timeout) {
- SharedPtr<Thread> current_thread = GetCurrentThread();
- current_thread->SetArbiterWaitAddress(address);
- current_thread->SetStatus(ThreadStatus::WaitArb);
- current_thread->InvalidateWakeupCallback();
-
- current_thread->WakeAfterDelay(timeout);
-
- Core::System::GetInstance().CpuCore(current_thread->GetProcessorID()).PrepareReschedule();
- return RESULT_TIMEOUT;
-}
-
-// Gets the threads waiting on an address.
-static std::vector<SharedPtr<Thread>> GetThreadsWaitingOnAddress(VAddr address) {
- const auto RetrieveWaitingThreads = [](std::size_t core_index,
- std::vector<SharedPtr<Thread>>& waiting_threads,
- VAddr arb_addr) {
- const auto& scheduler = Core::System::GetInstance().Scheduler(core_index);
- const auto& thread_list = scheduler.GetThreadList();
-
- for (const auto& thread : thread_list) {
- if (thread->GetArbiterWaitAddress() == arb_addr)
- waiting_threads.push_back(thread);
- }
- };
-
- // Retrieve all threads that are waiting for this address.
- std::vector<SharedPtr<Thread>> threads;
- RetrieveWaitingThreads(0, threads, address);
- RetrieveWaitingThreads(1, threads, address);
- RetrieveWaitingThreads(2, threads, address);
- RetrieveWaitingThreads(3, threads, address);
-
- // Sort them by priority, such that the highest priority ones come first.
- std::sort(threads.begin(), threads.end(),
- [](const SharedPtr<Thread>& lhs, const SharedPtr<Thread>& rhs) {
- return lhs->GetPriority() < rhs->GetPriority();
- });
-
- return threads;
-}
-
+namespace Kernel {
+namespace {
// Wake up num_to_wake (or all) threads in a vector.
-static void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num_to_wake) {
+void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num_to_wake) {
// Only process up to 'target' threads, unless 'target' is <= 0, in which case process
// them all.
std::size_t last = waiting_threads.size();
@@ -78,17 +36,20 @@ static void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num
waiting_threads[i]->ResumeFromWait();
}
}
+} // Anonymous namespace
-// Signals an address being waited on.
-ResultCode SignalToAddress(VAddr address, s32 num_to_wake) {
+AddressArbiter::AddressArbiter() = default;
+AddressArbiter::~AddressArbiter() = default;
+
+ResultCode AddressArbiter::SignalToAddress(VAddr address, s32 num_to_wake) {
std::vector<SharedPtr<Thread>> waiting_threads = GetThreadsWaitingOnAddress(address);
WakeThreads(waiting_threads, num_to_wake);
return RESULT_SUCCESS;
}
-// Signals an address being waited on and increments its value if equal to the value argument.
-ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake) {
+ResultCode AddressArbiter::IncrementAndSignalToAddressIfEqual(VAddr address, s32 value,
+ s32 num_to_wake) {
// Ensure that we can write to the address.
if (!Memory::IsValidVirtualAddress(address)) {
return ERR_INVALID_ADDRESS_STATE;
@@ -103,10 +64,8 @@ ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_
return SignalToAddress(address, num_to_wake);
}
-// Signals an address being waited on and modifies its value based on waiting thread count if equal
-// to the value argument.
-ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value,
- s32 num_to_wake) {
+ResultCode AddressArbiter::ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value,
+ s32 num_to_wake) {
// Ensure that we can write to the address.
if (!Memory::IsValidVirtualAddress(address)) {
return ERR_INVALID_ADDRESS_STATE;
@@ -135,8 +94,8 @@ ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 valu
return RESULT_SUCCESS;
}
-// Waits on an address if the value passed is less than the argument value, optionally decrementing.
-ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool should_decrement) {
+ResultCode AddressArbiter::WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout,
+ bool should_decrement) {
// Ensure that we can read the address.
if (!Memory::IsValidVirtualAddress(address)) {
return ERR_INVALID_ADDRESS_STATE;
@@ -158,8 +117,7 @@ ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool
return WaitForAddress(address, timeout);
}
-// Waits on an address if the value passed is equal to the argument value.
-ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) {
+ResultCode AddressArbiter::WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) {
// Ensure that we can read the address.
if (!Memory::IsValidVirtualAddress(address)) {
return ERR_INVALID_ADDRESS_STATE;
@@ -175,4 +133,45 @@ ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) {
return WaitForAddress(address, timeout);
}
-} // namespace Kernel::AddressArbiter
+
+ResultCode AddressArbiter::WaitForAddress(VAddr address, s64 timeout) {
+ SharedPtr<Thread> current_thread = GetCurrentThread();
+ current_thread->SetArbiterWaitAddress(address);
+ current_thread->SetStatus(ThreadStatus::WaitArb);
+ current_thread->InvalidateWakeupCallback();
+
+ current_thread->WakeAfterDelay(timeout);
+
+ Core::System::GetInstance().CpuCore(current_thread->GetProcessorID()).PrepareReschedule();
+ return RESULT_TIMEOUT;
+}
+
+std::vector<SharedPtr<Thread>> AddressArbiter::GetThreadsWaitingOnAddress(VAddr address) const {
+ const auto RetrieveWaitingThreads = [](std::size_t core_index,
+ std::vector<SharedPtr<Thread>>& waiting_threads,
+ VAddr arb_addr) {
+ const auto& scheduler = Core::System::GetInstance().Scheduler(core_index);
+ const auto& thread_list = scheduler.GetThreadList();
+
+ for (const auto& thread : thread_list) {
+ if (thread->GetArbiterWaitAddress() == arb_addr)
+ waiting_threads.push_back(thread);
+ }
+ };
+
+ // Retrieve all threads that are waiting for this address.
+ std::vector<SharedPtr<Thread>> threads;
+ RetrieveWaitingThreads(0, threads, address);
+ RetrieveWaitingThreads(1, threads, address);
+ RetrieveWaitingThreads(2, threads, address);
+ RetrieveWaitingThreads(3, threads, address);
+
+ // Sort them by priority, such that the highest priority ones come first.
+ std::sort(threads.begin(), threads.end(),
+ [](const SharedPtr<Thread>& lhs, const SharedPtr<Thread>& rhs) {
+ return lhs->GetPriority() < rhs->GetPriority();
+ });
+
+ return threads;
+}
+} // namespace Kernel
diff --git a/src/core/hle/kernel/address_arbiter.h b/src/core/hle/kernel/address_arbiter.h
index b58f21bec..6f46190f6 100644
--- a/src/core/hle/kernel/address_arbiter.h
+++ b/src/core/hle/kernel/address_arbiter.h
@@ -5,28 +5,62 @@
#pragma once
#include "common/common_types.h"
+#include "core/hle/kernel/address_arbiter.h"
union ResultCode;
-namespace Kernel::AddressArbiter {
+namespace Kernel {
-enum class ArbitrationType {
- WaitIfLessThan = 0,
- DecrementAndWaitIfLessThan = 1,
- WaitIfEqual = 2,
-};
+class Thread;
-enum class SignalType {
- Signal = 0,
- IncrementAndSignalIfEqual = 1,
- ModifyByWaitingCountAndSignalIfEqual = 2,
-};
+class AddressArbiter {
+public:
+ enum class ArbitrationType {
+ WaitIfLessThan = 0,
+ DecrementAndWaitIfLessThan = 1,
+ WaitIfEqual = 2,
+ };
+
+ enum class SignalType {
+ Signal = 0,
+ IncrementAndSignalIfEqual = 1,
+ ModifyByWaitingCountAndSignalIfEqual = 2,
+ };
+
+ AddressArbiter();
+ ~AddressArbiter();
+
+ AddressArbiter(const AddressArbiter&) = delete;
+ AddressArbiter& operator=(const AddressArbiter&) = delete;
+
+ AddressArbiter(AddressArbiter&&) = default;
+ AddressArbiter& operator=(AddressArbiter&&) = delete;
-ResultCode SignalToAddress(VAddr address, s32 num_to_wake);
-ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake);
-ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake);
+ /// Signals an address being waited on.
+ ResultCode SignalToAddress(VAddr address, s32 num_to_wake);
-ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool should_decrement);
-ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout);
+ /// Signals an address being waited on and increments its value if equal to the value argument.
+ ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake);
+
+ /// Signals an address being waited on and modifies its value based on waiting thread count if
+ /// equal to the value argument.
+ ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value,
+ s32 num_to_wake);
+
+ /// Waits on an address if the value passed is less than the argument value,
+ /// optionally decrementing.
+ ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout,
+ bool should_decrement);
+
+ /// Waits on an address if the value passed is equal to the argument value.
+ ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout);
+
+private:
+ // Waits on the given address with a timeout in nanoseconds
+ ResultCode WaitForAddress(VAddr address, s64 timeout);
+
+ // Gets the threads waiting on an address.
+ std::vector<SharedPtr<Thread>> GetThreadsWaitingOnAddress(VAddr address) const;
+};
-} // namespace Kernel::AddressArbiter
+} // namespace Kernel
diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp
index dd749eed4..b771a33a6 100644
--- a/src/core/hle/kernel/kernel.cpp
+++ b/src/core/hle/kernel/kernel.cpp
@@ -12,6 +12,7 @@
#include "core/core.h"
#include "core/core_timing.h"
+#include "core/hle/kernel/address_arbiter.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/kernel.h"
@@ -135,6 +136,8 @@ struct KernelCore::Impl {
std::vector<SharedPtr<Process>> process_list;
Process* current_process = nullptr;
+ Kernel::AddressArbiter address_arbiter;
+
SharedPtr<ResourceLimit> system_resource_limit;
Core::Timing::EventType* thread_wakeup_event_type = nullptr;
@@ -184,6 +187,14 @@ const Process* KernelCore::CurrentProcess() const {
return impl->current_process;
}
+AddressArbiter& KernelCore::AddressArbiter() {
+ return impl->address_arbiter;
+}
+
+const AddressArbiter& KernelCore::AddressArbiter() const {
+ return impl->address_arbiter;
+}
+
void KernelCore::AddNamedPort(std::string name, SharedPtr<ClientPort> port) {
impl->named_ports.emplace(std::move(name), std::move(port));
}
diff --git a/src/core/hle/kernel/kernel.h b/src/core/hle/kernel/kernel.h
index 154bced42..32b8ede0e 100644
--- a/src/core/hle/kernel/kernel.h
+++ b/src/core/hle/kernel/kernel.h
@@ -18,6 +18,7 @@ struct EventType;
namespace Kernel {
+class AddressArbiter;
class ClientPort;
class HandleTable;
class Process;
@@ -67,6 +68,12 @@ public:
/// Retrieves a const pointer to the current process.
const Process* CurrentProcess() const;
+ /// Provides a reference to the kernel's address arbiter.
+ Kernel::AddressArbiter& AddressArbiter();
+
+ /// Provides a const reference to the kernel's address arbiter.
+ const Kernel::AddressArbiter& AddressArbiter() const;
+
/// Adds a port to the named port table
void AddNamedPort(std::string name, SharedPtr<ClientPort> port);
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index c5d399bab..b7546087e 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -1495,13 +1495,14 @@ static ResultCode WaitForAddress(VAddr address, u32 type, s32 value, s64 timeout
return ERR_INVALID_ADDRESS;
}
+ auto& address_arbiter = Core::System::GetInstance().Kernel().AddressArbiter();
switch (static_cast<AddressArbiter::ArbitrationType>(type)) {
case AddressArbiter::ArbitrationType::WaitIfLessThan:
- return AddressArbiter::WaitForAddressIfLessThan(address, value, timeout, false);
+ return address_arbiter.WaitForAddressIfLessThan(address, value, timeout, false);
case AddressArbiter::ArbitrationType::DecrementAndWaitIfLessThan:
- return AddressArbiter::WaitForAddressIfLessThan(address, value, timeout, true);
+ return address_arbiter.WaitForAddressIfLessThan(address, value, timeout, true);
case AddressArbiter::ArbitrationType::WaitIfEqual:
- return AddressArbiter::WaitForAddressIfEqual(address, value, timeout);
+ return address_arbiter.WaitForAddressIfEqual(address, value, timeout);
default:
LOG_ERROR(Kernel_SVC,
"Invalid arbitration type, expected WaitIfLessThan, DecrementAndWaitIfLessThan "
@@ -1526,13 +1527,14 @@ static ResultCode SignalToAddress(VAddr address, u32 type, s32 value, s32 num_to
return ERR_INVALID_ADDRESS;
}
+ auto& address_arbiter = Core::System::GetInstance().Kernel().AddressArbiter();
switch (static_cast<AddressArbiter::SignalType>(type)) {
case AddressArbiter::SignalType::Signal:
- return AddressArbiter::SignalToAddress(address, num_to_wake);
+ return address_arbiter.SignalToAddress(address, num_to_wake);
case AddressArbiter::SignalType::IncrementAndSignalIfEqual:
- return AddressArbiter::IncrementAndSignalToAddressIfEqual(address, value, num_to_wake);
+ return address_arbiter.IncrementAndSignalToAddressIfEqual(address, value, num_to_wake);
case AddressArbiter::SignalType::ModifyByWaitingCountAndSignalIfEqual:
- return AddressArbiter::ModifyByWaitingCountAndSignalToAddressIfEqual(address, value,
+ return address_arbiter.ModifyByWaitingCountAndSignalToAddressIfEqual(address, value,
num_to_wake);
default:
LOG_ERROR(Kernel_SVC,
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 05:38:50 +0000