From e3a8292495cf0fb4297be27c696649dc44e011f0 Mon Sep 17 00:00:00 2001
From: Yuri Kunde Schlesner <yuriks@yuriks.net>
Date: Fri, 29 Apr 2016 00:07:10 -0700
Subject: Common: Remove section measurement from profiler (#1731)

This has been entirely superseded by MicroProfile. The rest of the code
can go when a simpler frametime/FPS meter is added to the GUI.
---
 src/common/profiler.cpp | 82 -------------------------------------------------
 1 file changed, 82 deletions(-)

(limited to 'src/common/profiler.cpp')

diff --git a/src/common/profiler.cpp b/src/common/profiler.cpp
index 7792edd2f..49eb3f40c 100644
--- a/src/common/profiler.cpp
+++ b/src/common/profiler.cpp
@@ -7,71 +7,16 @@
 #include <vector>
 
 #include "common/assert.h"
-#include "common/profiler.h"
 #include "common/profiler_reporting.h"
 #include "common/synchronized_wrapper.h"
 
-#if defined(_MSC_VER) && _MSC_VER <= 1800 // MSVC 2013.
-    #define WIN32_LEAN_AND_MEAN
-    #include <Windows.h> // For QueryPerformanceCounter/Frequency
-#endif
-
 namespace Common {
 namespace Profiling {
 
-#if ENABLE_PROFILING
-thread_local Timer* Timer::current_timer = nullptr;
-#endif
-
-#if defined(_MSC_VER) && _MSC_VER <= 1800 // MSVC 2013
-QPCClock::time_point QPCClock::now() {
-    static LARGE_INTEGER freq;
-    // Use this dummy local static to ensure this gets initialized once.
-    static BOOL dummy = QueryPerformanceFrequency(&freq);
-
-    LARGE_INTEGER ticks;
-    QueryPerformanceCounter(&ticks);
-
-    // This is prone to overflow when multiplying, which is why I'm using micro instead of nano. The
-    // correct way to approach this would be to just return ticks as a time_point and then subtract
-    // and do this conversion when creating a duration from two time_points, however, as far as I
-    // could tell the C++ requirements for these types are incompatible with this approach.
-    return time_point(duration(ticks.QuadPart * std::micro::den / freq.QuadPart));
-}
-#endif
-
-TimingCategory::TimingCategory(const char* name, TimingCategory* parent)
-        : accumulated_duration(0) {
-
-    ProfilingManager& manager = GetProfilingManager();
-    category_id = manager.RegisterTimingCategory(this, name);
-    if (parent != nullptr)
-        manager.SetTimingCategoryParent(category_id, parent->category_id);
-}
-
 ProfilingManager::ProfilingManager()
         : last_frame_end(Clock::now()), this_frame_start(Clock::now()) {
 }
 
-unsigned int ProfilingManager::RegisterTimingCategory(TimingCategory* category, const char* name) {
-    TimingCategoryInfo info;
-    info.category = category;
-    info.name = name;
-    info.parent = TimingCategoryInfo::NO_PARENT;
-
-    unsigned int id = (unsigned int)timing_categories.size();
-    timing_categories.push_back(std::move(info));
-
-    return id;
-}
-
-void ProfilingManager::SetTimingCategoryParent(unsigned int category, unsigned int parent) {
-    ASSERT(category < timing_categories.size());
-    ASSERT(parent < timing_categories.size());
-
-    timing_categories[category].parent = parent;
-}
-
 void ProfilingManager::BeginFrame() {
     this_frame_start = Clock::now();
 }
@@ -82,11 +27,6 @@ void ProfilingManager::FinishFrame() {
     results.interframe_time = now - last_frame_end;
     results.frame_time = now - this_frame_start;
 
-    results.time_per_category.resize(timing_categories.size());
-    for (size_t i = 0; i < timing_categories.size(); ++i) {
-        results.time_per_category[i] = timing_categories[i].category->GetAccumulatedTime();
-    }
-
     last_frame_end = now;
 }
 
@@ -100,26 +40,9 @@ void TimingResultsAggregator::Clear() {
     window_size = cursor = 0;
 }
 
-void TimingResultsAggregator::SetNumberOfCategories(size_t n) {
-    size_t old_size = times_per_category.size();
-    if (n == old_size)
-        return;
-
-    times_per_category.resize(n);
-
-    for (size_t i = old_size; i < n; ++i) {
-        times_per_category[i].resize(max_window_size, Duration::zero());
-    }
-}
-
 void TimingResultsAggregator::AddFrame(const ProfilingFrameResult& frame_result) {
-    SetNumberOfCategories(frame_result.time_per_category.size());
-
     interframe_times[cursor] = frame_result.interframe_time;
     frame_times[cursor] = frame_result.frame_time;
-    for (size_t i = 0; i < frame_result.time_per_category.size(); ++i) {
-        times_per_category[i][cursor] = frame_result.time_per_category[i];
-    }
 
     ++cursor;
     if (cursor == max_window_size)
@@ -162,11 +85,6 @@ AggregatedFrameResult TimingResultsAggregator::GetAggregatedResults() const {
         result.fps = 0.0f;
     }
 
-    result.time_per_category.resize(times_per_category.size());
-    for (size_t i = 0; i < times_per_category.size(); ++i) {
-        result.time_per_category[i] = AggregateField(times_per_category[i], window_size);
-    }
-
     return result;
 }
 
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