MFC r262528: Update LLDB snapshot to upstream r202189

  Highlights include (upstream revs in parens):

  - Improvements to the remote GDB protocol client
    (r196610, r197579, r197857, r200072, and others)

  - Bug fixes for big-endian targets
    (r196808)

  - Initial support for libdispatch (GCD) queues in the debuggee
    (r197190)

  - Add "step-avoid-libraries" setting
    (r199943)

  - IO subsystem improvements (including initial work on a curses gui)
    (r200263)

  - Support hardware watchpoints on FreeBSD
    (r201706)

  - Improved unwinding through hand-written assembly functions
    (r201839)

  - Handle DW_TAG_unspecified_parameters for variadic functions
    (r202061)

  - Fix Ctrl+C interrupting a running inferior process
    (r202086, r202154)

  - Various bug fixes for memory leaks, LLDB segfaults, the C++ demangler,
    ELF core files, DWARF debug info, and others.

Sponsored by:	DARPA, AFRL

1 files changed, 77 insertions, 0 deletions

diff --git a/contrib/llvm/tools/lldb/source/Target/QueueItem.cpp b/contrib/llvm/tools/lldb/source/Target/QueueItem.cpp
new file mode 100644
index 0000000..bb67628
--- /dev/null
+++ b/contrib/llvm/tools/lldb/source/Target/QueueItem.cpp
@@ -0,0 +1,77 @@
+//===-- QueueItem.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/Queue.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/QueueItem.h"
+#include "lldb/Target/SystemRuntime.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+QueueItem::QueueItem (QueueSP queue_sp) :
+    m_queue_wp (),
+    m_kind (eQueueItemKindUnknown),
+    m_address (),
+    m_item_that_enqueued_this_ref (LLDB_INVALID_ADDRESS),
+    m_enqueueing_thread_id (LLDB_INVALID_THREAD_ID),
+    m_enqueueing_queue_id (LLDB_INVALID_QUEUE_ID),
+    m_target_queue_id (LLDB_INVALID_QUEUE_ID),
+    m_stop_id (0),
+    m_backtrace(),
+    m_thread_label(),
+    m_queue_label(),
+    m_target_queue_label()
+{
+    m_queue_wp = queue_sp;
+}
+
+QueueItem::~QueueItem ()
+{
+}
+
+QueueItemKind
+QueueItem::GetKind() const
+{
+    return m_kind;
+}
+
+void
+QueueItem::SetKind (QueueItemKind item_kind)
+{
+    m_kind = item_kind;
+}
+
+Address &
+QueueItem::GetAddress () 
+{
+    return m_address;
+}
+
+void
+QueueItem::SetAddress (Address addr)
+{
+    m_address = addr;
+}
+
+ThreadSP
+QueueItem::GetExtendedBacktraceThread (ConstString type)
+{
+    ThreadSP return_thread;
+    QueueSP queue_sp = m_queue_wp.lock();
+    if (queue_sp)
+    {
+        ProcessSP process_sp = queue_sp->GetProcess();
+        if (process_sp && process_sp->GetSystemRuntime())
+        {
+            return_thread = process_sp->GetSystemRuntime()->GetExtendedBacktraceForQueueItem (this->shared_from_this(), type);
+        }
+    }
+    return return_thread;
+}