Initial import of lldb

Change-Id: Ib244e837bee349effa12b2ff6ffffbe3d730e929

external/bsd/llvm/dist/lldb/source/Target/OperatingSystem.cpp

@@ -0,0 +1,67 @@
+//===-- OperatingSystem.cpp --------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+
+#include "lldb/Target/OperatingSystem.h"
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+#include "lldb/Core/PluginManager.h"
+#include "lldb/Target/Thread.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+
+OperatingSystem*
+OperatingSystem::FindPlugin (Process *process, const char *plugin_name)
+{
+    OperatingSystemCreateInstance create_callback = NULL;
+    if (plugin_name)
+    {
+        ConstString const_plugin_name(plugin_name);
+        create_callback  = PluginManager::GetOperatingSystemCreateCallbackForPluginName (const_plugin_name);
+        if (create_callback)
+        {
+            std::unique_ptr<OperatingSystem> instance_ap(create_callback(process, true));
+            if (instance_ap.get())
+                return instance_ap.release();
+        }
+    }
+    else
+    {
+        for (uint32_t idx = 0; (create_callback = PluginManager::GetOperatingSystemCreateCallbackAtIndex(idx)) != NULL; ++idx)
+        {
+            std::unique_ptr<OperatingSystem> instance_ap(create_callback(process, false));
+            if (instance_ap.get())
+                return instance_ap.release();
+        }
+    }
+    return NULL;
+}
+
+
+OperatingSystem::OperatingSystem (Process *process) :
+    m_process (process)
+{
+}
+
+OperatingSystem::~OperatingSystem()
+{
+}
+
+
+bool
+OperatingSystem::IsOperatingSystemPluginThread (const lldb::ThreadSP &thread_sp)
+{
+    if (thread_sp)
+        return thread_sp->IsOperatingSystemPluginThread();
+    return false;
+}
+