folly: allow folly::init to build on systems without the symbolizer (macOS)

[folly.git] / folly / stats / MultiLevelTimeSeries-defs.h

diff --git a/folly/stats/MultiLevelTimeSeries-defs.h b/folly/stats/MultiLevelTimeSeries-defs.h
index cb119d8036691b048d609d3eada08867e5ac240c..763aaebe08a56099ecaf82c40c91413476113342 100644 (file)
--- a/folly/stats/MultiLevelTimeSeries-defs.h
+++ b/folly/stats/MultiLevelTimeSeries-defs.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2016 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-#ifndef FOLLY_STATS_MULTILEVELTIMESERIES_DEFS_H_
-#define FOLLY_STATS_MULTILEVELTIMESERIES_DEFS_H_
+#pragma once
 
+#include <folly/stats/MultiLevelTimeSeries.h>
 #include <glog/logging.h>
 
 namespace folly {
@@ -33,7 +33,7 @@ MultiLevelTimeSeries<VT, TT>::MultiLevelTimeSeries(
     CHECK(levelDurations);
 
     levels_.reserve(nLevels);
-    for (int i = 0; i < nLevels; ++i) {
+    for (size_t i = 0; i < nLevels; ++i) {
       if (levelDurations[i] == TT(0)) {
         CHECK_EQ(i, nLevels - 1);
       } else if (i > 0) {
@@ -44,8 +44,31 @@ MultiLevelTimeSeries<VT, TT>::MultiLevelTimeSeries(
 }
 
 template <typename VT, typename TT>
-void MultiLevelTimeSeries<VT, TT>::addValue(TimeType now,
-                                            const ValueType& val) {
+MultiLevelTimeSeries<VT, TT>::MultiLevelTimeSeries(
+    size_t nBuckets,
+    std::initializer_list<TimeType> durations)
+    : cachedTime_(0), cachedSum_(0), cachedCount_(0) {
+  CHECK_GT(durations.size(), 0);
+
+  levels_.reserve(durations.size());
+  int i = 0;
+  TimeType prev;
+  for (auto dur : durations) {
+    if (dur == TT(0)) {
+      CHECK_EQ(i, durations.size() - 1);
+    } else if (i > 0) {
+      CHECK(prev < dur);
+    }
+    levels_.emplace_back(nBuckets, dur);
+    prev = dur;
+    i++;
+  }
+}
+
+template <typename VT, typename TT>
+void MultiLevelTimeSeries<VT, TT>::addValue(
+    TimeType now,
+    const ValueType& val) {
   addValueAggregated(now, val, 1);
 }
 
@@ -71,7 +94,7 @@ void MultiLevelTimeSeries<VT, TT>::addValueAggregated(TimeType now,
 template <typename VT, typename TT>
 void MultiLevelTimeSeries<VT, TT>::update(TimeType now) {
   flush();
-  for (int i = 0; i < levels_.size(); ++i) {
+  for (size_t i = 0; i < levels_.size(); ++i) {
     levels_[i].update(now);
   }
 }
@@ -80,7 +103,7 @@ template <typename VT, typename TT>
 void MultiLevelTimeSeries<VT, TT>::flush() {
   // update all the underlying levels
   if (cachedCount_ > 0) {
-    for (int i = 0; i < levels_.size(); ++i) {
+    for (size_t i = 0; i < levels_.size(); ++i) {
       levels_[i].addValueAggregated(cachedTime_, cachedSum_, cachedCount_);
     }
     cachedCount_ = 0;
@@ -100,5 +123,3 @@ void MultiLevelTimeSeries<VT, TT>::clear() {
 }
 
 }  // folly
-
-#endif // FOLLY_STATS_MULTILEVELTIMESERIES_DEFS_H_