Adding namespace in timing macros

Sometime those macros are used under different namespaces. We need to use namespace ::paddle
to make it compile correctly.

Change-Id: I57a6d6ec8cd0d680b584aab62d72a35c226a24a4

paddle/utils/Stat.cpp

@@ -137,6 +137,9 @@ void StatSet::printSegTimerStatus() {
 
 void StatSet::printBarrierTimerStatus() {
   ReadLockGuard guard(lock_);
+  if (barrierStatSet_.empty()) {
+    return;
+  }
   // control barrierAbstact in runtime, so enable compliation
   LOG(INFO) << std::setiosflags(std::ios::left) << std::setfill(' ')
             << "======= BarrierStatSet status ======" << std::endl;

paddle/utils/Stat.h

@@ -258,28 +258,41 @@ inline StatSet& registerTimerArg2(uint64_t threshold = -1,
 // The default arguments are shown in the following line:
 // REGISTER_TIMER(statName, threshold = -1, statSet = globalStat)
 // TODO(yuyang18,wangyanfei01): if UNIQUE_NAME is needed
-#define REGISTER_TIMER(statName, ...)                                       \
-  static StatPtr __stat = registerTimerArg2(__VA_ARGS__).getStat(statName); \
-  TimerOnce __timerOnce(__stat.get(), "", registerTimerArg1(__VA_ARGS__));
+#define REGISTER_TIMER(statName, ...)                             \
+  static ::paddle::StatPtr __stat =                               \
+      ::paddle::registerTimerArg2(__VA_ARGS__).getStat(statName); \
+  ::paddle::TimerOnce __timerOnce(                                \
+      __stat.get(), "", ::paddle::registerTimerArg1(__VA_ARGS__));
 
 #define REGISTER_TIMER_SET(statName, start, ...)                            \
-  static StatPtr __stat = registerTimerArg2(__VA_ARGS__).getStat(statName); \
-  TimerOnce __timerOnce(                                                    \
-      __stat.get(), "", registerTimerArg1(__VA_ARGS__), false, start);
+  static ::paddle::StatPtr __stat =                                         \
+      ::paddle::registerTimerArg2(__VA_ARGS__).getStat(statName);           \
+  ::paddle::TimerOnce __timerOnce(__stat.get(),                             \
+                                  "",                                       \
+                                  ::paddle::registerTimerArg1(__VA_ARGS__), \
+                                  false,                                    \
+                                  start);
 
 // dynmaic timer, support to discriminate runtime entity, used in pserver
-#define REGISTER_TIMER_DYNAMIC(statName, ...)                        \
-  StatPtr __stat = registerTimerArg2(__VA_ARGS__).getStat(statName); \
-  TimerOnce __timerOnce(__stat.get(), "", registerTimerArg1(__VA_ARGS__));
-
-#define REGISTER_TIMER_DYNAMIC_SET(statName, start, ...)             \
-  StatPtr __stat = registerTimerArg2(__VA_ARGS__).getStat(statName); \
-  TimerOnce __timerOnce(                                             \
-      __stat.get(), "", registerTimerArg1(__VA_ARGS__), false, start);
-
-#define REGISTER_TIMER_INFO(statName, info)             \
-  static StatPtr __stat = globalStat.getStat(statName); \
-  TimerOnce __timerOnce(__stat.get(), info, 10 * 1000000LU /*threshold*/);
+#define REGISTER_TIMER_DYNAMIC(statName, ...)                     \
+  ::paddle::StatPtr __stat =                                      \
+      ::paddle::registerTimerArg2(__VA_ARGS__).getStat(statName); \
+  ::paddle::TimerOnce __timerOnce(                                \
+      __stat.get(), "", ::paddle::registerTimerArg1(__VA_ARGS__));
+
+#define REGISTER_TIMER_DYNAMIC_SET(statName, start, ...)                    \
+  ::paddle::StatPtr __stat =                                                \
+      ::paddle::registerTimerArg2(__VA_ARGS__).getStat(statName);           \
+  ::paddle::TimerOnce __timerOnce(__stat.get(),                             \
+                                  "",                                       \
+                                  ::paddle::registerTimerArg1(__VA_ARGS__), \
+                                  false,                                    \
+                                  start);
+
+#define REGISTER_TIMER_INFO(statName, info)                                 \
+  static ::paddle::StatPtr __stat = ::paddle::globalStat.getStat(statName); \
+  ::paddle::TimerOnce __timerOnce(                                          \
+      __stat.get(), info, 10 * 1000000LU /*threshold*/);
 
 #endif  // DISABLE_TIMER