From 26c06e13d92c02d75cafafde89603edad368105f Mon Sep 17 00:00:00 2001
From: Ben Vanik <ben.vanik@gmail.com>
Date: Tue, 15 Oct 2013 22:51:19 -0700
Subject: [PATCH] Checking in intermediate FS work before moving code.

---
 .../kernel/modules/xboxkrnl/async_request.cc  | 36 +++++++++++
 .../kernel/modules/xboxkrnl/async_request.h   | 59 +++++++++++++++++++
 .../kernel/modules/xboxkrnl/objects/xfile.cc  |  5 ++
 .../kernel/modules/xboxkrnl/objects/xfile.h   |  4 ++
 .../kernel/modules/xboxkrnl/sources.gypi      |  2 +
 5 files changed, 106 insertions(+)
 create mode 100644 src/xenia/kernel/modules/xboxkrnl/async_request.cc
 create mode 100644 src/xenia/kernel/modules/xboxkrnl/async_request.h

diff --git a/src/xenia/kernel/modules/xboxkrnl/async_request.cc b/src/xenia/kernel/modules/xboxkrnl/async_request.cc
new file mode 100644
index 000000000..b1f7bc909
--- /dev/null
+++ b/src/xenia/kernel/modules/xboxkrnl/async_request.cc
@@ -0,0 +1,36 @@
+/**
+ ******************************************************************************
+ * 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/modules/xboxkrnl/async_request.h>
+
+#include <xenia/kernel/modules/xboxkrnl/xobject.h>
+#include <xenia/kernel/modules/xboxkrnl/objects/xevent.h>
+
+
+using namespace xe;
+using namespace xe::kernel;
+using namespace xe::kernel::xboxkrnl;
+
+
+XAsyncRequest::XAsyncRequest(
+    XObject* object,
+    CompletionCallback callback, void* callback_context) :
+    object_(object),
+    callback_(callback), callback_context_(callback_context),
+    wait_event_(0),
+    apc_routine_(0), apc_context_(0) {
+  object_->Retain();
+}
+
+XAsyncRequest::~XAsyncRequest() {
+  if (wait_event_) {
+    wait_event_->Release();
+  }
+  object_->Release();
+}
diff --git a/src/xenia/kernel/modules/xboxkrnl/async_request.h b/src/xenia/kernel/modules/xboxkrnl/async_request.h
new file mode 100644
index 000000000..c4d05291b
--- /dev/null
+++ b/src/xenia/kernel/modules/xboxkrnl/async_request.h
@@ -0,0 +1,59 @@
+/**
+ ******************************************************************************
+ * 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_MODULES_XBOXKRNL_ASYNC_REQUEST_H_
+#define XENIA_KERNEL_MODULES_XBOXKRNL_ASYNC_REQUEST_H_
+
+#include <xenia/common.h>
+#include <xenia/core.h>
+
+#include <xenia/kernel/xbox.h>
+
+
+namespace xe {
+namespace kernel {
+namespace xboxkrnl {
+
+class XEvent;
+
+
+class XAsyncRequest {
+public:
+  typedef void (*CompletionCallback)(XAsyncRequest* request, void* context);
+
+  XAsyncRequest(
+      XObject* object,
+      CompletionCallback callback, void* callback_context);
+  virtual ~XAsyncRequest();
+
+  XObject* object() const { return object_; }
+
+  XEvent* wait_event() const { return wait_event_; }
+  uint32_t apc_routine() const { return apc_routine_; }
+  uint32_t apc_context() const { return apc_context_; }
+
+  // Complete(result)
+
+protected:
+  XObject*            object_;
+  CompletionCallback  callback_;
+  void*               callback_context_;
+
+  XEvent*     wait_event_;
+  uint32_t    apc_routine_;
+  uint32_t    apc_context_;
+};
+
+
+}  // namespace xboxkrnl
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_MODULES_XBOXKRNL_ASYNC_REQUEST_H_
diff --git a/src/xenia/kernel/modules/xboxkrnl/objects/xfile.cc b/src/xenia/kernel/modules/xboxkrnl/objects/xfile.cc
index 4db262a47..d82c50910 100644
--- a/src/xenia/kernel/modules/xboxkrnl/objects/xfile.cc
+++ b/src/xenia/kernel/modules/xboxkrnl/objects/xfile.cc
@@ -25,3 +25,8 @@ XFile::XFile(KernelState* kernel_state, FileEntry* entry) :
 
 XFile::~XFile() {
 }
+
+X_STATUS XFile::Read(void* buffer, size_t buffer_length, size_t byte_offset,
+                     XAsyncRequest* request) {
+  return X_STATUS_ACCESS_DENIED;
+}
diff --git a/src/xenia/kernel/modules/xboxkrnl/objects/xfile.h b/src/xenia/kernel/modules/xboxkrnl/objects/xfile.h
index 5cd7d3cce..b30ae4702 100644
--- a/src/xenia/kernel/modules/xboxkrnl/objects/xfile.h
+++ b/src/xenia/kernel/modules/xboxkrnl/objects/xfile.h
@@ -14,6 +14,7 @@
 
 #include <xenia/kernel/xbox.h>
 #include <xenia/kernel/fs/entry.h>
+#include <xenia/kernel/modules/xboxkrnl/async_request.h>
 
 
 namespace xe {
@@ -26,6 +27,9 @@ public:
   XFile(KernelState* kernel_state, fs::FileEntry* entry);
   virtual ~XFile();
 
+  X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
+                XAsyncRequest* request);
+
 private:
   fs::FileEntry*  entry_;
 };
diff --git a/src/xenia/kernel/modules/xboxkrnl/sources.gypi b/src/xenia/kernel/modules/xboxkrnl/sources.gypi
index 2cf0db113..4cdca38cd 100644
--- a/src/xenia/kernel/modules/xboxkrnl/sources.gypi
+++ b/src/xenia/kernel/modules/xboxkrnl/sources.gypi
@@ -1,6 +1,8 @@
 # Copyright 2013 Ben Vanik. All Rights Reserved.
 {
   'sources': [
+    'async_request.cc',
+    'async_request.h',
     'kernel_state.cc',
     'kernel_state.h',
     'module.cc',