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-rw-r--r--src/core/hle/kernel/k_interrupt_manager.cpp8
-rw-r--r--src/core/hle/kernel/k_interrupt_manager.h4
-rw-r--r--src/core/hle/kernel/k_thread.cpp76
-rw-r--r--src/core/hle/kernel/k_thread.h4
4 files changed, 91 insertions, 1 deletions
diff --git a/src/core/hle/kernel/k_interrupt_manager.cpp b/src/core/hle/kernel/k_interrupt_manager.cpp
index 1b577a5b3..ad73f3eab 100644
--- a/src/core/hle/kernel/k_interrupt_manager.cpp
+++ b/src/core/hle/kernel/k_interrupt_manager.cpp
@@ -36,4 +36,12 @@ void HandleInterrupt(KernelCore& kernel, s32 core_id) {
kernel.CurrentScheduler()->RequestScheduleOnInterrupt();
}
+void SendInterProcessorInterrupt(KernelCore& kernel, u64 core_mask) {
+ for (std::size_t core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; ++core_id) {
+ if (core_mask & (1ULL << core_id)) {
+ kernel.PhysicalCore(core_id).Interrupt();
+ }
+ }
+}
+
} // namespace Kernel::KInterruptManager
diff --git a/src/core/hle/kernel/k_interrupt_manager.h b/src/core/hle/kernel/k_interrupt_manager.h
index f103dfe3f..803dc9211 100644
--- a/src/core/hle/kernel/k_interrupt_manager.h
+++ b/src/core/hle/kernel/k_interrupt_manager.h
@@ -11,6 +11,8 @@ class KernelCore;
namespace KInterruptManager {
void HandleInterrupt(KernelCore& kernel, s32 core_id);
-}
+void SendInterProcessorInterrupt(KernelCore& kernel, u64 core_mask);
+
+} // namespace KInterruptManager
} // namespace Kernel
diff --git a/src/core/hle/kernel/k_thread.cpp b/src/core/hle/kernel/k_thread.cpp
index 174afc80d..89b32d509 100644
--- a/src/core/hle/kernel/k_thread.cpp
+++ b/src/core/hle/kernel/k_thread.cpp
@@ -30,6 +30,7 @@
#include "core/hle/kernel/k_worker_task_manager.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_results.h"
+#include "core/hle/kernel/svc_types.h"
#include "core/hle/result.h"
#include "core/memory.h"
@@ -38,6 +39,9 @@
#endif
namespace {
+
+constexpr inline s32 TerminatingThreadPriority = Kernel::Svc::SystemThreadPriorityHighest - 1;
+
static void ResetThreadContext32(Core::ARM_Interface::ThreadContext32& context, u32 stack_top,
u32 entry_point, u32 arg) {
context = {};
@@ -1073,6 +1077,78 @@ void KThread::Exit() {
UNREACHABLE_MSG("KThread::Exit() would return");
}
+Result KThread::Terminate() {
+ ASSERT(this != GetCurrentThreadPointer(kernel));
+
+ // Request the thread terminate if it hasn't already.
+ if (const auto new_state = this->RequestTerminate(); new_state != ThreadState::Terminated) {
+ // If the thread isn't terminated, wait for it to terminate.
+ s32 index;
+ KSynchronizationObject* objects[] = {this};
+ R_TRY(KSynchronizationObject::Wait(kernel, std::addressof(index), objects, 1,
+ Svc::WaitInfinite));
+ }
+
+ return ResultSuccess;
+}
+
+ThreadState KThread::RequestTerminate() {
+ ASSERT(this != GetCurrentThreadPointer(kernel));
+
+ KScopedSchedulerLock sl{kernel};
+
+ // Determine if this is the first termination request.
+ const bool first_request = [&]() -> bool {
+ // Perform an atomic compare-and-swap from false to true.
+ bool expected = false;
+ return termination_requested.compare_exchange_strong(expected, true);
+ }();
+
+ // If this is the first request, start termination procedure.
+ if (first_request) {
+ // If the thread is in initialized state, just change state to terminated.
+ if (this->GetState() == ThreadState::Initialized) {
+ thread_state = ThreadState::Terminated;
+ return ThreadState::Terminated;
+ }
+
+ // Register the terminating dpc.
+ this->RegisterDpc(DpcFlag::Terminating);
+
+ // If the thread is pinned, unpin it.
+ if (this->GetStackParameters().is_pinned) {
+ this->GetOwnerProcess()->UnpinThread(this);
+ }
+
+ // If the thread is suspended, continue it.
+ if (this->IsSuspended()) {
+ suspend_allowed_flags = 0;
+ this->UpdateState();
+ }
+
+ // Change the thread's priority to be higher than any system thread's.
+ if (this->GetBasePriority() >= Svc::SystemThreadPriorityHighest) {
+ this->SetBasePriority(TerminatingThreadPriority);
+ }
+
+ // If the thread is runnable, send a termination interrupt to other cores.
+ if (this->GetState() == ThreadState::Runnable) {
+ if (const u64 core_mask =
+ physical_affinity_mask.GetAffinityMask() & ~(1ULL << GetCurrentCoreId(kernel));
+ core_mask != 0) {
+ Kernel::KInterruptManager::SendInterProcessorInterrupt(kernel, core_mask);
+ }
+ }
+
+ // Wake up the thread.
+ if (this->GetState() == ThreadState::Waiting) {
+ wait_queue->CancelWait(this, ResultTerminationRequested, true);
+ }
+ }
+
+ return this->GetState();
+}
+
Result KThread::Sleep(s64 timeout) {
ASSERT(!kernel.GlobalSchedulerContext().IsLocked());
ASSERT(this == GetCurrentThreadPointer(kernel));
diff --git a/src/core/hle/kernel/k_thread.h b/src/core/hle/kernel/k_thread.h
index 9ee20208e..e2a27d603 100644
--- a/src/core/hle/kernel/k_thread.h
+++ b/src/core/hle/kernel/k_thread.h
@@ -180,6 +180,10 @@ public:
void Exit();
+ Result Terminate();
+
+ ThreadState RequestTerminate();
+
[[nodiscard]] u32 GetSuspendFlags() const {
return suspend_allowed_flags & suspend_request_flags;
}