Adding some GPU docs and creating output directories automatically.

src/xenia/gpu/tracing.cc

@@ -0,0 +1,49 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/gpu/tracing.h"
+
+#include "xenia/base/fs.h"
+#include "xenia/base/string.h"
+
+namespace xe {
+namespace gpu {
+
+TraceWriter::TraceWriter(uint8_t* membase)
+    : membase_(membase), file_(nullptr) {}
+
+TraceWriter::~TraceWriter() = default;
+
+bool TraceWriter::Open(const std::wstring& path) {
+  Close();
+
+  auto canonical_path = xe::to_absolute_path(path);
+  auto base_path = xe::find_base_path(canonical_path);
+  xe::fs::CreateFolder(base_path);
+
+  file_ = _wfopen(canonical_path.c_str(), L"wb");
+  return file_ != nullptr;
+}
+
+void TraceWriter::Flush() {
+  if (file_) {
+    fflush(file_);
+  }
+}
+
+void TraceWriter::Close() {
+  if (file_) {
+    fflush(file_);
+    fclose(file_);
+    file_ = nullptr;
+  }
+}
+
+}  //  namespace gpu
+}  //  namespace xe