In progress XNotify stuff. Going to merge xam/xboxkrnl next.

src/xenia/kernel/xboxkrnl/objects/sources.gypi

@@ -7,6 +7,8 @@
     'xfile.h',
     'xmodule.cc',
     'xmodule.h',
+    'xnotify_listener.cc',
+    'xnotify_listener.h',
     'xsemaphore.cc',
     'xsemaphore.h',
     'xthread.cc',

src/xenia/kernel/xboxkrnl/objects/xnotify_listener.cc

@@ -0,0 +1,126 @@
+/**
+ ******************************************************************************
+ * 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/xboxkrnl/objects/xnotify_listener.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+using namespace xe::kernel::xboxkrnl;
+
+
+XNotifyListener::XNotifyListener(KernelState* kernel_state) :
+    XObject(kernel_state, kTypeNotifyListener),
+    wait_handle_(NULL), lock_(0), mask_(0), notification_count_(0) {
+}
+
+XNotifyListener::~XNotifyListener() {
+  xe_mutex_free(lock_);
+  if (wait_handle_) {
+    CloseHandle(wait_handle_);
+  }
+}
+
+void XNotifyListener::Initialize(uint64_t mask) {
+  XEASSERTNULL(wait_handle_);
+
+  lock_ = xe_mutex_alloc();
+  wait_handle_ = CreateEvent(NULL, TRUE, FALSE, NULL);
+  mask_ = mask;
+}
+
+void XNotifyListener::EnqueueNotification(XNotificationID id, uint32_t data) {
+  xe_mutex_lock(lock_);
+  auto existing = notifications_.find(id);
+  if (existing != notifications_.end()) {
+    // Already exists. Overwrite.
+    notifications_[id] = data;
+  } else {
+    // New.
+    notification_count_++;
+  }
+  SetEvent(wait_handle_);
+  xe_mutex_unlock(lock_);
+}
+
+bool XNotifyListener::DequeueNotification(
+    XNotificationID* out_id, uint32_t* out_data) {
+  bool dequeued = false;
+  xe_mutex_lock(lock_);
+  if (notification_count_) {
+    dequeued = true;
+    auto it = notifications_.begin();
+    *out_id = it->first;
+    *out_data = it->second;
+    notifications_.erase(it);
+    notification_count_--;
+    if (!notification_count_) {
+      ResetEvent(wait_handle_);
+    }
+  }
+  xe_mutex_unlock(lock_);
+  return dequeued;
+}
+
+bool XNotifyListener::DequeueNotification(
+    XNotificationID id, uint32_t* out_data) {
+  bool dequeued = false;
+  xe_mutex_lock(lock_);
+  if (notification_count_) {
+    dequeued = true;
+    auto it = notifications_.find(id);
+    if (it != notifications_.end()) {
+      *out_data = it->second;
+      notifications_.erase(it);
+      notification_count_--;
+      if (!notification_count_) {
+        ResetEvent(wait_handle_);
+      }
+    }
+  }
+  xe_mutex_unlock(lock_);
+  return dequeued;
+}
+
+// TODO(benvanik): move this to common class
+X_STATUS XNotifyListener::Wait(uint32_t wait_reason, uint32_t processor_mode,
+                               uint32_t alertable, uint64_t* opt_timeout) {
+  DWORD timeout_ms;
+  if (opt_timeout) {
+    int64_t timeout_ticks = (int64_t)(*opt_timeout);
+    if (timeout_ticks > 0) {
+      // Absolute time, based on January 1, 1601.
+      // TODO(benvanik): convert time to relative time.
+      XEASSERTALWAYS();
+      timeout_ms = 0;
+    } else if (timeout_ticks < 0) {
+      // Relative time.
+      timeout_ms = (DWORD)(-timeout_ticks / 10000); // Ticks -> MS
+    } else {
+      timeout_ms = 0;
+    }
+  } else {
+    timeout_ms = INFINITE;
+  }
+
+  DWORD result = WaitForSingleObjectEx(wait_handle_, timeout_ms, alertable);
+  switch (result) {
+  case WAIT_OBJECT_0:
+    return X_STATUS_SUCCESS;
+  case WAIT_IO_COMPLETION:
+    // Or X_STATUS_ALERTED?
+    return X_STATUS_USER_APC;
+  case WAIT_TIMEOUT:
+    return X_STATUS_TIMEOUT;
+  default:
+  case WAIT_FAILED:
+  case WAIT_ABANDONED:
+    return X_STATUS_ABANDONED_WAIT_0;
+  }
+}

src/xenia/kernel/xboxkrnl/objects/xnotify_listener.h

@@ -0,0 +1,57 @@
+/**
+ ******************************************************************************
+ * 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. *
+ ******************************************************************************
+ */
+
+// This should probably be in XAM, but I don't want to build an extensible
+// object system. Meh.
+
+#ifndef XENIA_KERNEL_XBOXKRNL_XNOTIFY_LISTENER_H_
+#define XENIA_KERNEL_XBOXKRNL_XNOTIFY_LISTENER_H_
+
+#include <xenia/kernel/xboxkrnl/xobject.h>
+
+#include <xenia/xbox.h>
+
+
+namespace xe {
+namespace kernel {
+namespace xboxkrnl {
+
+// Values seem to be all over the place - GUIDs?
+typedef uint32_t XNotificationID;
+
+
+class XNotifyListener : public XObject {
+public:
+  XNotifyListener(KernelState* kernel_state);
+  virtual ~XNotifyListener();
+
+  void Initialize(uint64_t mask);
+
+  void EnqueueNotification(XNotificationID id, uint32_t data);
+  bool DequeueNotification(XNotificationID* out_id, uint32_t* out_data);
+  bool DequeueNotification(XNotificationID id, uint32_t* out_data);
+
+  virtual X_STATUS Wait(uint32_t wait_reason, uint32_t processor_mode,
+                        uint32_t alertable, uint64_t* opt_timeout);
+
+private:
+  HANDLE wait_handle_;
+  xe_mutex_t* lock_;
+  std::unordered_map<XNotificationID, uint32_t> notifications_;
+  size_t notification_count_;
+  uint64_t mask_;
+};
+
+
+}  // namespace xboxkrnl
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_XBOXKRNL_XNOTIFY_LISTENER_H_

src/xenia/kernel/xboxkrnl/xobject.h

@@ -32,11 +32,12 @@ typedef struct {
 class XObject {
 public:
   enum Type {
-    kTypeModule     = 0x00000001,
-    kTypeThread     = 0x00000002,
-    kTypeEvent      = 0x00000003,
-    kTypeFile       = 0x00000004,
-    kTypeSemaphore  = 0x00000005,
+    kTypeModule,
+    kTypeThread,
+    kTypeEvent,
+    kTypeFile,
+    kTypeSemaphore,
+    kTypeNotifyListener,
   };
 
   XObject(KernelState* kernel_state, Type type);