Timers. Probably.

src/xenia/kernel/objects/sources.gypi

@@ -15,5 +15,7 @@
     'xsemaphore.h',
     'xthread.cc',
     'xthread.h',
+    'xtimer.cc',
+    'xtimer.h',
   ],
 }

src/xenia/kernel/objects/xtimer.cc

@@ -0,0 +1,60 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/kernel/objects/xtimer.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+
+
+XTimer::XTimer(KernelState* kernel_state) :
+    XObject(kernel_state, kTypeTimer),
+    handle_(NULL) {
+}
+
+XTimer::~XTimer() {
+  if (handle_) {
+    CloseHandle(handle_);
+  }
+}
+
+void XTimer::Initialize(uint32_t timer_type) {
+  XEASSERTNULL(handle_);
+
+  bool manual_reset = false;
+  switch (timer_type) {
+  case 0: // NotificationTimer
+    manual_reset = true;
+    break;
+  case 1: // SynchronizationTimer
+    manual_reset = false;
+    break;
+  default:
+    XEASSERTALWAYS();
+    break;
+  }
+
+  handle_ = CreateWaitableTimer(NULL, manual_reset, NULL);
+}
+
+X_STATUS XTimer::SetTimer(int64_t due_time, uint32_t period_ms) {
+  LARGE_INTEGER due_time_li;
+  due_time_li.QuadPart = due_time;
+  if (SetWaitableTimer(handle_, &due_time_li, period_ms, NULL, NULL, TRUE)) {
+    return X_STATUS_SUCCESS;
+  } else {
+    return X_STATUS_UNSUCCESSFUL;
+  }
+}
+
+X_STATUS XTimer::Cancel() {
+  return CancelWaitableTimer(handle_) == 0 ?
+      X_STATUS_SUCCESS : X_STATUS_UNSUCCESSFUL;
+}

src/xenia/kernel/objects/xtimer.h

@@ -0,0 +1,44 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_KERNEL_XBOXKRNL_XTIMER_H_
+#define XENIA_KERNEL_XBOXKRNL_XTIMER_H_
+
+#include <xenia/kernel/xobject.h>
+
+#include <xenia/xbox.h>
+
+
+namespace xe {
+namespace kernel {
+
+
+class XTimer : public XObject {
+public:
+  XTimer(KernelState* kernel_state);
+  virtual ~XTimer();
+
+  void Initialize(uint32_t timer_type);
+
+  // completion routine, arg to completion routine
+  X_STATUS SetTimer(int64_t due_time, uint32_t period_ms);
+  X_STATUS Cancel();
+
+  virtual void* GetWaitHandle() { return handle_; }
+
+private:
+  HANDLE handle_;
+};
+
+
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_XBOXKRNL_TIMER_H_

src/xenia/kernel/xboxkrnl_threading.cc

@@ -15,6 +15,7 @@
 #include <xenia/kernel/objects/xmutant.h>
 #include <xenia/kernel/objects/xsemaphore.h>
 #include <xenia/kernel/objects/xthread.h>
+#include <xenia/kernel/objects/xtimer.h>
 #include <xenia/kernel/util/shim_utils.h>
 
 
@@ -945,6 +946,100 @@ SHIM_CALL NtReleaseMutant_shim(
 }
 
 
+SHIM_CALL NtCreateTimer_shim(
+    PPCContext* ppc_state, KernelState* state) {
+  uint32_t handle_ptr = SHIM_GET_ARG_32(0);
+  uint32_t obj_attributes_ptr = SHIM_GET_ARG_32(1);
+  uint32_t timer_type = SHIM_GET_ARG_32(2);
+
+  // timer_type = NotificationTimer (0) or SynchronizationTimer (1)
+
+  XELOGD(
+      "NtCreateTimer(%.8X, %.8X, %.1X)",
+      handle_ptr, obj_attributes_ptr, timer_type);
+
+  XTimer* timer = new XTimer(state);
+  timer->Initialize(timer_type);
+
+  // obj_attributes may have a name inside of it, if != NULL.
+  if (obj_attributes_ptr) {
+    //timer->SetName(...);
+  }
+
+  if (handle_ptr) {
+    SHIM_SET_MEM_32(handle_ptr, timer->handle());
+  }
+
+  SHIM_SET_RETURN(X_STATUS_SUCCESS);
+}
+
+
+SHIM_CALL NtSetTimerEx_shim(
+    PPCContext* ppc_state, KernelState* state) {
+  uint32_t timer_handle = SHIM_GET_ARG_32(0);
+  uint32_t info_class = SHIM_GET_ARG_32(1);
+  uint32_t info_ptr = SHIM_GET_ARG_32(2);
+  uint32_t info_length = SHIM_GET_ARG_32(3);
+
+  // UNVERIFIED
+  XEASSERTALWAYS();
+
+  XELOGD(
+      "NtSetTimerEx(%.8X, %.8X, %.8X, %d)",
+      timer_handle, info_class, info_ptr, info_length);
+
+  // TIMER_BASIC_INFORMATION
+  XEASSERT(info_class == 0);
+  XEASSERT(info_length == 12);
+
+  uint64_t due_time = SHIM_MEM_64(info_ptr + 0);
+  uint32_t timer_state = SHIM_MEM_32(info_ptr + 8); // unused?
+  uint32_t period_ms = 0; // Not repeating.
+
+  X_STATUS result = X_STATUS_SUCCESS;
+
+  XTimer* timer = NULL;
+  result = state->object_table()->GetObject(
+      timer_handle, (XObject**)&timer);
+  if (XSUCCEEDED(result)) {
+    result = timer->SetTimer(due_time, period_ms);
+    timer->Release();
+  }
+
+  SHIM_SET_RETURN(result);
+}
+
+
+SHIM_CALL NtCancelTimer_shim(
+    PPCContext* ppc_state, KernelState* state) {
+  uint32_t timer_handle = SHIM_GET_ARG_32(0);
+  uint32_t current_state_ptr = SHIM_GET_ARG_32(1);
+
+  // UNVERIFIED
+  XEASSERTALWAYS();
+
+  XELOGD(
+      "NtCancelTimer(%.8X, %.8X)",
+      timer_handle, current_state_ptr);
+
+  X_STATUS result = X_STATUS_SUCCESS;
+
+  XTimer* timer = NULL;
+  result = state->object_table()->GetObject(
+      timer_handle, (XObject**)&timer);
+  if (XSUCCEEDED(result)) {
+    result = timer->Cancel();
+    timer->Release();
+
+    if (current_state_ptr) {
+      SHIM_SET_MEM_32(current_state_ptr, 0);
+    }
+  }
+
+  SHIM_SET_RETURN(result);
+}
+
+
 X_STATUS xeKeWaitForSingleObject(
     void* object_ptr, uint32_t wait_reason, uint32_t processor_mode,
     uint32_t alertable, uint64_t* opt_timeout) {
@@ -1208,6 +1303,10 @@ void xe::kernel::xboxkrnl::RegisterThreadingExports(
   SHIM_SET_MAPPING("xboxkrnl.exe", NtCreateMutant, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", NtReleaseMutant, state);
 
+  SHIM_SET_MAPPING("xboxkrnl.exe", NtCreateTimer, state);
+  SHIM_SET_MAPPING("xboxkrnl.exe", NtSetTimerEx, state);
+  SHIM_SET_MAPPING("xboxkrnl.exe", NtCancelTimer, state);
+
   SHIM_SET_MAPPING("xboxkrnl.exe", KeWaitForSingleObject, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", NtWaitForSingleObjectEx, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", KeWaitForMultipleObjects, state);

src/xenia/kernel/xobject.cc

@@ -71,8 +71,7 @@ X_STATUS XObject::Delete() {
   return shared_kernel_state_->object_table()->RemoveHandle(handle_);
 }
 
-namespace {
-uint32_t ConvertTimeoutTicks(int64_t timeout_ticks) {
+uint32_t XObject::TimeoutTicksToMs(int64_t timeout_ticks) {
   if (timeout_ticks > 0) {
     // Absolute time, based on January 1, 1601.
     // TODO(benvanik): convert time to relative time.
@@ -85,7 +84,6 @@ uint32_t ConvertTimeoutTicks(int64_t timeout_ticks) {
     return 0;
   }
 }
-}
 
 X_STATUS XObject::Wait(uint32_t wait_reason, uint32_t processor_mode,
                        uint32_t alertable, uint64_t* opt_timeout) {
@@ -96,7 +94,7 @@ X_STATUS XObject::Wait(uint32_t wait_reason, uint32_t processor_mode,
   }
 
   DWORD timeout_ms = opt_timeout ?
-      ConvertTimeoutTicks(*opt_timeout) : INFINITE;
+      TimeoutTicksToMs(*opt_timeout) : INFINITE;
 
   DWORD result = WaitForSingleObjectEx(wait_handle, timeout_ms, alertable);
   switch (result) {
@@ -119,7 +117,7 @@ X_STATUS XObject::SignalAndWait(
     uint32_t wait_reason, uint32_t processor_mode, uint32_t alertable,
     uint64_t* opt_timeout) {
   DWORD timeout_ms = opt_timeout ?
-      ConvertTimeoutTicks(*opt_timeout) : INFINITE;
+      TimeoutTicksToMs(*opt_timeout) : INFINITE;
 
   DWORD result = SignalObjectAndWait(
       signal_object->GetWaitHandle(),
@@ -141,7 +139,7 @@ X_STATUS XObject::WaitMultiple(
   }
 
   DWORD timeout_ms = opt_timeout ?
-      ConvertTimeoutTicks(*opt_timeout) : INFINITE;
+      TimeoutTicksToMs(*opt_timeout) : INFINITE;
 
   DWORD result = WaitForMultipleObjectsEx(
       count, wait_handles,

src/xenia/kernel/xobject.h

@@ -38,6 +38,7 @@ public:
     kTypeSemaphore,
     kTypeNotifyListener,
     kTypeMutant,
+    kTypeTimer,
   };
 
   XObject(KernelState* kernel_state, Type type);
@@ -81,6 +82,8 @@ protected:
   Memory* memory() const;
   void SetNativePointer(uint32_t native_ptr);
 
+  static uint32_t TimeoutTicksToMs(int64_t timeout_ticks);
+
   KernelState*  kernel_state_;
 
 private: