1 files changed, 160 insertions, 0 deletions
diff --git a/include/lldb/Core/Timer.h b/include/lldb/Core/Timer.h
new file mode 100644
index 0000000..e354d91
--- /dev/null
+++ b/include/lldb/Core/Timer.h
@@ -0,0 +1,160 @@
+//===-- 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 <stdarg.h>
+#include <stdio.h>
+#include <string>
+#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 a 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, ...)  __attribute__ ((format (printf, 3, 4)));
+
+    //--------------------------------------------------------------
+    /// Desstructor
+    //--------------------------------------------------------------
+    ~Timer();
+
+    void
+    Dump ();
+
+    static void
+    SetDisplayDepth (uint32_t depth);
+    
+    static void
+    SetQuiet (bool value);
+
+    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);
+};
+    
+class IntervalTimer
+{
+public:
+    IntervalTimer() :
+        m_start (TimeValue::Now())
+    {
+    }
+    
+    ~IntervalTimer()
+    {
+    }
+
+    uint64_t
+    GetElapsedNanoSeconds() const
+    {
+        return TimeValue::Now() - m_start;
+    }
+    
+    void
+    Reset ()
+    {
+        m_start = TimeValue::Now();
+    }
+    
+    int
+    PrintfElapsed (const char *format, ...)  __attribute__ ((format (printf, 2, 3)))
+    {
+        TimeValue now (TimeValue::Now());
+        const uint64_t elapsed_nsec = now - m_start;
+        const char *unit = NULL;
+        float elapsed_value;
+        if (elapsed_nsec < 1000)
+        {
+            unit = "ns";
+            elapsed_value = (float)elapsed_nsec;
+        }
+        else if (elapsed_nsec < 1000000)
+        {
+            unit = "us";
+            elapsed_value = (float)elapsed_nsec/1000.0f;
+        }
+        else if (elapsed_nsec < 1000000000)
+        {
+            unit = "ms";
+            elapsed_value = (float)elapsed_nsec/1000000.0f;
+        }
+        else
+        {
+            unit = "sec";
+            elapsed_value = (float)elapsed_nsec/1000000000.0f;
+        }
+        int result = printf ("%3.2f %s: ", elapsed_value, unit);
+        va_list args;
+        va_start (args, format);
+        result += vprintf (format, args);
+        va_end (args);
+        return result;
+    }
+protected:
+    TimeValue m_start;
+};
+
+} // namespace lldb_private
+
+#endif  // #if defined(__cplusplus)
+#endif // #ifndef liblldb_Timer_h_