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-rw-r--r--src/core/hle/kernel/k_condition_variable.cpp2
-rw-r--r--src/core/hle/kernel/k_light_lock.cpp2
-rw-r--r--src/core/hle/kernel/k_memory_layout.h6
-rw-r--r--src/core/hle/kernel/k_thread.cpp21
-rw-r--r--src/core/hle/kernel/k_thread.h24
-rw-r--r--src/core/hle/kernel/kernel.cpp39
6 files changed, 52 insertions, 42 deletions
diff --git a/src/core/hle/kernel/k_condition_variable.cpp b/src/core/hle/kernel/k_condition_variable.cpp
index 124149697..0c6b20db3 100644
--- a/src/core/hle/kernel/k_condition_variable.cpp
+++ b/src/core/hle/kernel/k_condition_variable.cpp
@@ -171,7 +171,7 @@ Result KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 value)
R_UNLESS(owner_thread != nullptr, ResultInvalidHandle);
// Update the lock.
- cur_thread->SetAddressKey(addr, value);
+ cur_thread->SetUserAddressKey(addr, value);
owner_thread->AddWaiter(cur_thread);
// Begin waiting.
diff --git a/src/core/hle/kernel/k_light_lock.cpp b/src/core/hle/kernel/k_light_lock.cpp
index 43185320d..d791acbe3 100644
--- a/src/core/hle/kernel/k_light_lock.cpp
+++ b/src/core/hle/kernel/k_light_lock.cpp
@@ -68,7 +68,7 @@ bool KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {
// Add the current thread as a waiter on the owner.
KThread* owner_thread = reinterpret_cast<KThread*>(_owner & ~1ULL);
- cur_thread->SetAddressKey(reinterpret_cast<uintptr_t>(std::addressof(tag)));
+ cur_thread->SetKernelAddressKey(reinterpret_cast<uintptr_t>(std::addressof(tag)));
owner_thread->AddWaiter(cur_thread);
// Begin waiting to hold the lock.
diff --git a/src/core/hle/kernel/k_memory_layout.h b/src/core/hle/kernel/k_memory_layout.h
index fd6e1d3e6..17fa1a6ed 100644
--- a/src/core/hle/kernel/k_memory_layout.h
+++ b/src/core/hle/kernel/k_memory_layout.h
@@ -67,9 +67,9 @@ constexpr size_t KernelPageBufferAdditionalSize = 0x33C000;
constexpr std::size_t KernelResourceSize = KernelPageTableHeapSize + KernelInitialPageHeapSize +
KernelSlabHeapSize + KernelPageBufferHeapSize;
-constexpr bool IsKernelAddressKey(VAddr key) {
- return KernelVirtualAddressSpaceBase <= key && key <= KernelVirtualAddressSpaceLast;
-}
+//! NB: Use KThread::GetAddressKeyIsKernel().
+//! See explanation for deviation of GetAddressKey.
+bool IsKernelAddressKey(VAddr key) = delete;
constexpr bool IsKernelAddress(VAddr address) {
return KernelVirtualAddressSpaceBase <= address && address < KernelVirtualAddressSpaceEnd;
diff --git a/src/core/hle/kernel/k_thread.cpp b/src/core/hle/kernel/k_thread.cpp
index 21207fe99..84ff3c64b 100644
--- a/src/core/hle/kernel/k_thread.cpp
+++ b/src/core/hle/kernel/k_thread.cpp
@@ -330,7 +330,7 @@ void KThread::Finalize() {
KThread* const waiter = std::addressof(*it);
// The thread shouldn't be a kernel waiter.
- ASSERT(!IsKernelAddressKey(waiter->GetAddressKey()));
+ ASSERT(!waiter->GetAddressKeyIsKernel());
// Clear the lock owner.
waiter->SetLockOwner(nullptr);
@@ -763,19 +763,6 @@ void KThread::Continue() {
KScheduler::OnThreadStateChanged(kernel, this, old_state);
}
-void KThread::WaitUntilSuspended() {
- // Make sure we have a suspend requested.
- ASSERT(IsSuspendRequested());
-
- // Loop until the thread is not executing on any core.
- for (std::size_t i = 0; i < static_cast<std::size_t>(Core::Hardware::NUM_CPU_CORES); ++i) {
- KThread* core_thread{};
- do {
- core_thread = kernel.Scheduler(i).GetSchedulerCurrentThread();
- } while (core_thread == this);
- }
-}
-
Result KThread::SetActivity(Svc::ThreadActivity activity) {
// Lock ourselves.
KScopedLightLock lk(activity_pause_lock);
@@ -897,7 +884,7 @@ void KThread::AddWaiterImpl(KThread* thread) {
}
// Keep track of how many kernel waiters we have.
- if (IsKernelAddressKey(thread->GetAddressKey())) {
+ if (thread->GetAddressKeyIsKernel()) {
ASSERT((num_kernel_waiters++) >= 0);
KScheduler::SetSchedulerUpdateNeeded(kernel);
}
@@ -911,7 +898,7 @@ void KThread::RemoveWaiterImpl(KThread* thread) {
ASSERT(kernel.GlobalSchedulerContext().IsLocked());
// Keep track of how many kernel waiters we have.
- if (IsKernelAddressKey(thread->GetAddressKey())) {
+ if (thread->GetAddressKeyIsKernel()) {
ASSERT((num_kernel_waiters--) > 0);
KScheduler::SetSchedulerUpdateNeeded(kernel);
}
@@ -987,7 +974,7 @@ KThread* KThread::RemoveWaiterByKey(s32* out_num_waiters, VAddr key) {
KThread* thread = std::addressof(*it);
// Keep track of how many kernel waiters we have.
- if (IsKernelAddressKey(thread->GetAddressKey())) {
+ if (thread->GetAddressKeyIsKernel()) {
ASSERT((num_kernel_waiters--) > 0);
KScheduler::SetSchedulerUpdateNeeded(kernel);
}
diff --git a/src/core/hle/kernel/k_thread.h b/src/core/hle/kernel/k_thread.h
index 7cd94a340..9d771de0e 100644
--- a/src/core/hle/kernel/k_thread.h
+++ b/src/core/hle/kernel/k_thread.h
@@ -214,8 +214,6 @@ public:
void Continue();
- void WaitUntilSuspended();
-
constexpr void SetSyncedIndex(s32 index) {
synced_index = index;
}
@@ -607,13 +605,30 @@ public:
return address_key_value;
}
- void SetAddressKey(VAddr key) {
+ [[nodiscard]] bool GetAddressKeyIsKernel() const {
+ return address_key_is_kernel;
+ }
+
+ //! NB: intentional deviation from official kernel.
+ //
+ // Separate SetAddressKey into user and kernel versions
+ // to cope with arbitrary host pointers making their way
+ // into things.
+
+ void SetUserAddressKey(VAddr key) {
address_key = key;
+ address_key_is_kernel = false;
}
- void SetAddressKey(VAddr key, u32 val) {
+ void SetUserAddressKey(VAddr key, u32 val) {
address_key = key;
address_key_value = val;
+ address_key_is_kernel = false;
+ }
+
+ void SetKernelAddressKey(VAddr key) {
+ address_key = key;
+ address_key_is_kernel = true;
}
void ClearWaitQueue() {
@@ -772,6 +787,7 @@ private:
bool debug_attached{};
s8 priority_inheritance_count{};
bool resource_limit_release_hint{};
+ bool address_key_is_kernel{};
StackParameters stack_parameters{};
Common::SpinLock context_guard{};
diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp
index 1fb25f221..d9eafe261 100644
--- a/src/core/hle/kernel/kernel.cpp
+++ b/src/core/hle/kernel/kernel.cpp
@@ -1198,28 +1198,35 @@ void KernelCore::Suspend(bool suspended) {
const bool should_suspend{exception_exited || suspended};
const auto activity = should_suspend ? ProcessActivity::Paused : ProcessActivity::Runnable;
- std::vector<KScopedAutoObject<KThread>> process_threads;
- {
- KScopedSchedulerLock sl{*this};
+ //! This refers to the application process, not the current process.
+ KScopedAutoObject<KProcess> process = CurrentProcess();
+ if (process.IsNull()) {
+ return;
+ }
- if (auto* process = CurrentProcess(); process != nullptr) {
- process->SetActivity(activity);
+ // Set the new activity.
+ process->SetActivity(activity);
- if (!should_suspend) {
- // Runnable now; no need to wait.
- return;
- }
+ // Wait for process execution to stop.
+ bool must_wait{should_suspend};
+
+ // KernelCore::Suspend must be called from locked context, or we
+ // could race another call to SetActivity, interfering with waiting.
+ while (must_wait) {
+ KScopedSchedulerLock sl{*this};
+
+ // Assume that all threads have finished running.
+ must_wait = false;
- for (auto* thread : process->GetThreadList()) {
- process_threads.emplace_back(thread);
+ for (auto i = 0; i < static_cast<s32>(Core::Hardware::NUM_CPU_CORES); ++i) {
+ if (Scheduler(i).GetSchedulerCurrentThread()->GetOwnerProcess() ==
+ process.GetPointerUnsafe()) {
+ // A thread has not finished running yet.
+ // Continue waiting.
+ must_wait = true;
}
}
}
-
- // Wait for execution to stop.
- for (auto& thread : process_threads) {
- thread->WaitUntilSuspended();
- }
}
void KernelCore::ShutdownCores() {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 21:12:38 +0100