1 files changed, 93 insertions, 0 deletions
diff --git a/lldb/include/lldb/Core/Timer.h b/lldb/include/lldb/Core/Timer.h
new file mode 100644
index 00000000000..50c8fdfd386
--- /dev/null
+++ b/lldb/include/lldb/Core/Timer.h
@@ -0,0 +1,93 @@
+//===-- Timer.h -------------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_Timer_h_
+#define liblldb_Timer_h_
+#if defined(__cplusplus)
+
+#include <memory>
+#include "lldb/lldb-private.h"
+#include "lldb/Host/TimeValue.h"
+
+namespace lldb_private {
+
+//----------------------------------------------------------------------
+/// @class Timer Timer.h "lldb/Core/Timer.h"
+/// @brief A timer class that simplifies common timing metrics.
+///
+/// A scoped timer class that allows a variety of pthread mutex
+/// objects to have a mutex locked when an Timer::Locker
+/// object is created, and unlocked when it goes out of scope or
+/// when the Timer::Locker::Reset(pthread_mutex_t *)
+/// is called. This provides an exception safe way to lock a mutex
+/// in a scope.
+//----------------------------------------------------------------------
+
+class Timer
+{
+public:
+    static void
+    Initialize ();
+
+    //--------------------------------------------------------------
+    /// Default constructor.
+    //--------------------------------------------------------------
+    Timer(const char *category, const char *format, ...);
+
+    //--------------------------------------------------------------
+    /// Desstructor
+    //--------------------------------------------------------------
+    ~Timer();
+
+    void
+    Dump ();
+
+    static void
+    SetDisplayDepth (uint32_t depth);
+
+    static void
+    DumpCategoryTimes (Stream *s);
+
+    static void
+    ResetCategoryTimes ();
+
+protected:
+
+    void
+    ChildStarted (const TimeValue& time);
+
+    void
+    ChildStopped (const TimeValue& time);
+
+    uint64_t
+    GetTotalElapsedNanoSeconds();
+
+    uint64_t
+    GetTimerElapsedNanoSeconds();
+
+    //--------------------------------------------------------------
+    /// Member variables
+    //--------------------------------------------------------------
+    const char *m_category;
+    TimeValue m_total_start;
+    TimeValue m_timer_start;
+    uint64_t m_total_ticks; // Total running time for this timer including when other timers below this are running
+    uint64_t m_timer_ticks; // Ticks for this timer that do not include when other timers below this one are running
+    static uint32_t g_depth;
+    static uint32_t g_display_depth;
+    static FILE * g_file;
+private:
+    Timer();
+    DISALLOW_COPY_AND_ASSIGN (Timer);
+};
+
+} // namespace lldb_private
+
+#endif  // #if defined(__cplusplus)
+#endif // #ifndef liblldb_Timer_h_