From f5237d486a3edaae4b45459405226d7c8523d257 Mon Sep 17 00:00:00 2001
From: "Dr. Chat" <arkolbed@gmail.com>
Date: Wed, 16 Dec 2015 12:00:35 -0600
Subject: [PATCH] KernelState::TerminateTitle - Release the global lock in
 smaller regions / No need for an argument specifying if called from guest

---
 src/xenia/kernel/kernel_state.cc | 17 +++++++----------
 src/xenia/kernel/kernel_state.h  |  2 +-
 src/xenia/kernel/xam/xam_info.cc |  8 +++++---
 3 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/src/xenia/kernel/kernel_state.cc b/src/xenia/kernel/kernel_state.cc
index 4f934470d..68f8d00af 100644
--- a/src/xenia/kernel/kernel_state.cc
+++ b/src/xenia/kernel/kernel_state.cc
@@ -333,7 +333,7 @@ object_ref<UserModule> KernelState::LoadUserModule(const char* raw_name,
   return module;
 }
 
-void KernelState::TerminateTitle(bool from_guest_thread) {
+void KernelState::TerminateTitle() {
   XELOGD("KernelState::TerminateTitle");
   auto global_lock = global_critical_region_.Acquire();
 
@@ -352,13 +352,11 @@ void KernelState::TerminateTitle(bool from_guest_thread) {
   */
 
   // Kill all guest threads.
-  // Need to not be holding the lock to do this.
-  global_lock.unlock();
   for (auto it = threads_by_id_.begin(); it != threads_by_id_.end();) {
     if (it->second->is_guest_thread()) {
       auto thread = it->second;
 
-      if (from_guest_thread && XThread::IsInThread(thread)) {
+      if (XThread::IsInThread(thread)) {
         // Don't terminate ourselves.
         ++it;
         continue;
@@ -372,8 +370,10 @@ void KernelState::TerminateTitle(bool from_guest_thread) {
           thread->thread()->Suspend();
         }
 
+        global_lock.unlock();
         thread->StepToSafePoint();
         thread->Terminate(0);
+        global_lock.lock();
       }
 
       // Erase it from the thread list.
@@ -382,13 +382,12 @@ void KernelState::TerminateTitle(bool from_guest_thread) {
       ++it;
     }
   }
-  global_lock.lock();
 
   // Third: Unload all user modules (including the executable)
   for (int i = 0; i < user_modules_.size(); i++) {
     X_STATUS status = user_modules_[i]->Unload();
     assert_true(XSUCCEEDED(status));
-  
+
     object_table_.RemoveHandle(user_modules_[i]->handle());
   }
   user_modules_.clear();
@@ -399,13 +398,11 @@ void KernelState::TerminateTitle(bool from_guest_thread) {
   // Unregister all notify listeners.
   notify_listeners_.clear();
 
-  if (from_guest_thread) {
+  if (XThread::IsInThread()) {
     threads_by_id_.erase(XThread::GetCurrentThread()->thread_id());
 
     // Now commit suicide (using Terminate, because we can't call into guest
     // code anymore)
-    // Also, manually invoke the lock guard's destructor, because Terminate
-    // does not return.
     global_lock.unlock();
     XThread::GetCurrentThread()->Terminate(0);
   }
@@ -624,7 +621,7 @@ bool KernelState::Save(ByteStream* stream) {
     }
 
     if (!thread->Save(stream)) {
-      XELOGD("Did not save thread \"%s\"", thread->name().c_str());
+      XELOGD("Failed to save thread \"%s\"", thread->name().c_str());
       num_threads--;
     }
   }
diff --git a/src/xenia/kernel/kernel_state.h b/src/xenia/kernel/kernel_state.h
index f730968c9..aa59cba6b 100644
--- a/src/xenia/kernel/kernel_state.h
+++ b/src/xenia/kernel/kernel_state.h
@@ -143,7 +143,7 @@ class KernelState {
 
   // Terminates a title: Unloads all modules, and kills all guest threads.
   // This DOES NOT RETURN if called from a guest thread!
-  void TerminateTitle(bool from_guest_thread = false);
+  void TerminateTitle();
 
   void RegisterThread(XThread* thread);
   void UnregisterThread(XThread* thread);
diff --git a/src/xenia/kernel/xam/xam_info.cc b/src/xenia/kernel/xam/xam_info.cc
index 447391ef4..9d5673e34 100644
--- a/src/xenia/kernel/xam/xam_info.cc
+++ b/src/xenia/kernel/xam/xam_info.cc
@@ -147,7 +147,9 @@ void XamLoaderLaunchTitle(lpstring_t raw_name, dword_t flags) {
   loader_data.launch_flags = flags;
 
   // Translate the launch path to a full path.
-  if (raw_name) {
+  if (raw_name && raw_name.value() == "") {
+    loader_data.launch_path = "game:\\default.xex";
+  } else if (raw_name) {
     std::string name = xe::find_name_from_path(std::string(raw_name));
     std::string path(raw_name);
     if (name == std::string(raw_name)) {
@@ -162,13 +164,13 @@ void XamLoaderLaunchTitle(lpstring_t raw_name, dword_t flags) {
   }
 
   // This function does not return.
-  kernel_state()->TerminateTitle(true);
+  kernel_state()->TerminateTitle();
 }
 DECLARE_XAM_EXPORT(XamLoaderLaunchTitle, ExportTag::kSketchy);
 
 void XamLoaderTerminateTitle() {
   // This function does not return.
-  kernel_state()->TerminateTitle(true);
+  kernel_state()->TerminateTitle();
 }
 DECLARE_XAM_EXPORT(XamLoaderTerminateTitle, ExportTag::kSketchy);