Remove processor dependency on XThread for breakpoints

src/xenia/base/threading.h

@@ -10,6 +10,7 @@
 #ifndef XENIA_BASE_THREADING_H_
 #define XENIA_BASE_THREADING_H_
 
+#include <algorithm>
 #include <atomic>
 #include <chrono>
 #include <climits>
@@ -344,6 +345,7 @@ class Thread : public WaitHandle {
   // within that thread.
   static std::unique_ptr<Thread> Create(CreationParameters params,
                                         std::function<void()> start_routine);
+  static std::unique_ptr<Thread> GetCurrentThread();
 
   // Ends the calling thread.
   // No destructors are called, and this function does not return.

src/xenia/base/threading_win.cc

@@ -442,7 +442,7 @@ std::unique_ptr<Thread> Thread::Create(CreationParameters params,
   HANDLE handle =
       CreateThread(NULL, params.stack_size, ThreadStartRoutine, start_data,
                    params.create_suspended ? CREATE_SUSPENDED : 0, NULL);
-  if (!handle) {
+  if (handle == INVALID_HANDLE_VALUE) {
     // TODO(benvanik): pass back?
     auto last_error = GetLastError();
     XELOGE("Unable to CreateThread: %d", last_error);
@@ -453,6 +453,15 @@ std::unique_ptr<Thread> Thread::Create(CreationParameters params,
   return std::make_unique<Win32Thread>(handle);
 }
 
+std::unique_ptr<Thread> Thread::GetCurrentThread() {
+  HANDLE handle = ::GetCurrentThread();
+  if (handle == INVALID_HANDLE_VALUE) {
+    return nullptr;
+  }
+
+  return std::make_unique<Win32Thread>(handle);
+}
+
 void Thread::Exit(int exit_code) { ExitThread(exit_code); }
 
 }  // namespace threading