From c6e173a34e9257ea4f5e7c390a710f6121f53c42 Mon Sep 17 00:00:00 2001
From: Brett <brettmaster1@gmail.com>
Date: Thu, 29 Dec 2022 00:56:37 -0500
Subject: [PATCH] Basic intervals on the profiler

---
 include/blt/profiling/profiler.h | 16 +++++++++++++---
 src/blt/profiling/profiler.cpp   | 24 +++++++++++++++++++++++-
 2 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/include/blt/profiling/profiler.h b/include/blt/profiling/profiler.h
index 78d2ed1..f767be8 100644
--- a/include/blt/profiling/profiler.h
+++ b/include/blt/profiling/profiler.h
@@ -10,6 +10,7 @@
 #include <string>
 #include <string_view>
 #include <blt/config.h>
+#include <mutex>
 
 #ifdef PHMAP_ENABLED
     #include <parallel_hashmap/phmap.h>
@@ -30,17 +31,26 @@ namespace BLT {
 #ifdef PHMAP_ENABLED
     typedef phmap::parallel_flat_hash_map<std::string_view, CaptureInterval> INTERVAL_MAP;
     typedef phmap::parallel_flat_hash_map<std::string_view, CapturePoint> POINT_MAP;
+    typedef phmap::parallel_flat_hash_map<int, std::string_view> ORDER_MAP;
 #else
     typedef std::unordered_map<std::string_view, CaptureInterval> INTERVAL_MAP;
     typedef std::unordered_map<std::string_view, CapturePoint> POINT_MAP;
+    typedef std::unordered_map<int, std::string_view> ORDER_MAP;
 #endif
     
     class Profiler {
         private:
-            INTERVAL_MAP intervals;
-            POINT_MAP points;
+            INTERVAL_MAP intervals{};
+            POINT_MAP points{};
+            ORDER_MAP order{};
+            
+            std::mutex timerLock{};
+            int lastOrder = 0;
         public:
-            Profiler();
+            Profiler() = default;
+            void finishCycle();
+            void startInterval(const std::string_view& name);
+            void endInterval(const std::string_view& name);
     };
 }
 
diff --git a/src/blt/profiling/profiler.cpp b/src/blt/profiling/profiler.cpp
index 34f21cd..b85c681 100644
--- a/src/blt/profiling/profiler.cpp
+++ b/src/blt/profiling/profiler.cpp
@@ -4,7 +4,29 @@
  * See LICENSE file for license detail
  */
 #include <blt/profiling/profiler.h>
+#include <iostream>
+#include <utility>
 
 namespace BLT {
-
+    
+    void Profiler::finishCycle() {
+    
+    }
+    
+    static inline auto getCurrentTimeNanoseconds() {
+        return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
+    }
+    
+    void Profiler::startInterval(const std::string_view& name) {
+        std::scoped_lock lock(timerLock);
+        CaptureInterval interval{};
+        interval.start = {getCurrentTimeNanoseconds()};
+        intervals[name] = interval;
+    }
+    
+    void Profiler::endInterval(const std::string_view& name) {
+        std::scoped_lock lock(timerLock);
+        intervals[name].end = {getCurrentTimeNanoseconds()};
+        order[lastOrder++] = name;
+    }
 }
\ No newline at end of file