Update Profiler to use std::chrono

src/common/Profiler.cpp

@@ -50,7 +50,7 @@ Profiler::m_worstCalls;
 static Mutex profileMutex;
 
 void
-Profiler::add(const char *id, float ms)
+Profiler::add(const char *id, double ms)
 {
     profileMutex.lock();
     
@@ -95,7 +95,7 @@ Profiler::getReport()
 #endif
     report += buffer;
 
-    typedef std::multimap<float, const char *> TimeRMap;
+    typedef std::multimap<double, const char *> TimeRMap;
     typedef std::multimap<int, const char *> IntRMap;
     TimeRMap totmap, avgmap, worstmap;
     IntRMap ncallmap;
@@ -186,11 +186,7 @@ Profiler::Profiler(const char* c) :
     m_c(c),
     m_ended(false)
 {
-#ifdef PROFILE_CLOCKS
-    m_start = clock();
-#else
-    (void)gettimeofday(&m_start, 0);
-#endif
+    m_start = std::chrono::steady_clock::now();
 }
 
 Profiler::~Profiler()
@@ -201,25 +197,9 @@ Profiler::~Profiler()
 void
 Profiler::end()
 {
-#ifdef PROFILE_CLOCKS
-    clock_t end = clock();
-    clock_t elapsed = end - m_start;
-    float ms = float((double(elapsed) / double(CLOCKS_PER_SEC)) * 1000.0);
-#else
-    struct timeval tv;
-    (void)gettimeofday(&tv, 0);
-
-    tv.tv_sec -= m_start.tv_sec;
-    if (tv.tv_usec < m_start.tv_usec) {
-        tv.tv_usec += 1000000;
-        tv.tv_sec -= 1;
-    }
-    tv.tv_usec -= m_start.tv_usec;
-    float ms = float((double(tv.tv_sec) + (double(tv.tv_usec) / 1000000.0)) * 1000.0);
-#endif
-
-    add(m_c, ms);
-
+    auto finish = std::chrono::steady_clock::now();
+    std::chrono::duration<double, std::milli> ms = finish - m_start;
+    add(m_c, ms.count());
     m_ended = true;
 }
  

src/common/Profiler.h

@@ -39,14 +39,7 @@
 #endif
 
 #ifndef NO_TIMING
-#ifdef PROFILE_CLOCKS
-#include <time.h>
-#else
-#include "sysutils.h"
-#ifndef _WIN32
-#include <sys/time.h>
-#endif
-#endif
+#include <chrono>
 #endif
 
 #ifndef NO_TIMING
@@ -75,21 +68,17 @@ public:
     static std::string getReport();
 
 protected:
-    const char* m_c;
-#ifdef PROFILE_CLOCKS
-    clock_t m_start;
-#else
-    struct timeval m_start;
-#endif
+    const char *const m_c;
+    std::chrono::time_point<std::chrono::steady_clock> m_start;
     bool m_showOnDestruct;
     bool m_ended;
 
-    typedef std::pair<int, float> TimePair;
+    typedef std::pair<int, double> TimePair;
     typedef std::map<const char *, TimePair> ProfileMap;
-    typedef std::map<const char *, float> WorstCallMap;
+    typedef std::map<const char *, double> WorstCallMap;
     static ProfileMap m_profiles;
     static WorstCallMap m_worstCalls;
-    static void add(const char *, float);
+    static void add(const char *, double);
 };
 
 #else

src/common/sysutils.cpp

@@ -150,22 +150,6 @@ system_is_multiprocessor()
     return mp;
 }
 
-#ifdef _WIN32
-
-void gettimeofday(struct timeval *tv, void *tz)
-{
-    union { 
-	long long ns100;  
-	FILETIME ft; 
-    } now; 
-    
-    ::GetSystemTimeAsFileTime(&now.ft); 
-    tv->tv_usec = (long)((now.ns100 / 10LL) % 1000000LL); 
-    tv->tv_sec = (long)((now.ns100 - 116444736000000000LL) / 10000000LL); 
-}
-
-#endif
-
 void system_specific_initialise()
 {
 #if defined HAVE_IPP

src/common/sysutils.h

@@ -99,11 +99,6 @@ extern bool system_is_multiprocessor();
 extern void system_specific_initialise();
 extern void system_specific_application_initialise();
 
-#ifdef _WIN32
-struct timeval { long tv_sec; long tv_usec; };
-void gettimeofday(struct timeval *p, void *tz);
-#endif // _WIN32
-
 } // end namespace
 
 // The following should be functions in the RubberBand namespace, really