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This has been entirely superseded by MicroProfile.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.

13 files changed, 8 insertions, 306 deletions

diff --git a/src/citra_qt/debugger/profiler.cpp b/src/citra_qt/debugger/profiler.cpp
index e90973b8e..7bb010f77 100644
--- a/src/citra_qt/debugger/profiler.cpp
+++ b/src/citra_qt/debugger/profiler.cpp
@@ -9,6 +9,7 @@
 #include "citra_qt/debugger/profiler.h"
 #include "citra_qt/util/util.h"
 
+#include "common/common_types.h"
 #include "common/microprofile.h"
 #include "common/profiler_reporting.h"
 
@@ -36,21 +37,9 @@ static QVariant GetDataForColumn(int col, const AggregatedDuration& duration)
     }
 }
 
-static const TimingCategoryInfo* GetCategoryInfo(int id)
-{
-    const auto& categories = GetProfilingManager().GetTimingCategoriesInfo();
-    if ((size_t)id >= categories.size()) {
-        return nullptr;
-    } else {
-        return &categories[id];
-    }
-}
-
 ProfilerModel::ProfilerModel(QObject* parent) : QAbstractItemModel(parent)
 {
     updateProfilingInfo();
-    const auto& categories = GetProfilingManager().GetTimingCategoriesInfo();
-    results.time_per_category.resize(categories.size());
 }
 
 QVariant ProfilerModel::headerData(int section, Qt::Orientation orientation, int role) const
@@ -87,7 +76,7 @@ int ProfilerModel::rowCount(const QModelIndex& parent) const
     if (parent.isValid()) {
         return 0;
     } else {
-        return static_cast<int>(results.time_per_category.size() + 2);
+        return 2;
     }
 }
 
@@ -106,17 +95,6 @@ QVariant ProfilerModel::data(const QModelIndex& index, int role) const
             } else {
                 return GetDataForColumn(index.column(), results.interframe_time);
             }
-        } else {
-            if (index.column() == 0) {
-                const TimingCategoryInfo* info = GetCategoryInfo(index.row() - 2);
-                return info != nullptr ? QString(info->name) : QVariant();
-            } else {
-                if (index.row() - 2 < (int)results.time_per_category.size()) {
-                    return GetDataForColumn(index.column(), results.time_per_category[index.row() - 2]);
-                } else {
-                    return QVariant();
-                }
-            }
         }
     }
 
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index c839ce173..aa6eee2a3 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -47,7 +47,6 @@ set(HEADERS
             microprofile.h
             microprofileui.h
             platform.h
-            profiler.h
             profiler_reporting.h
             scm_rev.h
             scope_exit.h
diff --git a/src/common/microprofileui.h b/src/common/microprofileui.h
index 97c369bd9..41abe6b75 100644
--- a/src/common/microprofileui.h
+++ b/src/common/microprofileui.h
@@ -13,4 +13,7 @@
 #define MICROPROFILE_HELP_ALT "Right-Click"
 #define MICROPROFILE_HELP_MOD "Ctrl"
 
+// This isn't included by microprofileui.h :(
+#include <cstdlib> // For std::abs
+
 #include <microprofileui.h>
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;
 }
 
diff --git a/src/common/profiler.h b/src/common/profiler.h
deleted file mode 100644
index 3e967b4bc..000000000
--- a/src/common/profiler.h
+++ /dev/null
@@ -1,152 +0,0 @@
-// Copyright 2015 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <atomic>
-#include <chrono>
-
-#include "common/assert.h"
-#include "common/thread.h"
-
-namespace Common {
-namespace Profiling {
-
-// If this is defined to 0, it turns all Timers into no-ops.
-#ifndef ENABLE_PROFILING
-#define ENABLE_PROFILING 1
-#endif
-
-#if defined(_MSC_VER) && _MSC_VER <= 1800 // MSVC 2013
-// MSVC up to 2013 doesn't use QueryPerformanceCounter for high_resolution_clock, so it has bad
-// precision. We manually implement a clock based on QPC to get good results.
-
-struct QPCClock {
-    using duration = std::chrono::microseconds;
-    using time_point = std::chrono::time_point<QPCClock>;
-    using rep = duration::rep;
-    using period = duration::period;
-    static const bool is_steady = false;
-
-    static time_point now();
-};
-
-using Clock = QPCClock;
-#else
-using Clock = std::chrono::high_resolution_clock;
-#endif
-
-using Duration = Clock::duration;
-
-/**
- * Represents a timing category that measured time can be accounted towards. Should be declared as a
- * global variable and passed to Timers.
- */
-class TimingCategory final {
-public:
-    TimingCategory(const char* name, TimingCategory* parent = nullptr);
-
-    unsigned int GetCategoryId() const {
-        return category_id;
-    }
-
-    /// Adds some time to this category. Can safely be called from multiple threads at the same time.
-    void AddTime(Duration amount) {
-        std::atomic_fetch_add_explicit(
-                &accumulated_duration, amount.count(),
-                std::memory_order_relaxed);
-    }
-
-    /**
-     * Atomically retrieves the accumulated measured time for this category and resets the counter
-     * to zero. Can be safely called concurrently with AddTime.
-     */
-    Duration GetAccumulatedTime() {
-        return Duration(std::atomic_exchange_explicit(
-                &accumulated_duration, (Duration::rep)0,
-                std::memory_order_relaxed));
-    }
-
-private:
-    unsigned int category_id;
-    std::atomic<Duration::rep> accumulated_duration;
-};
-
-/**
- * Measures time elapsed between a call to Start and a call to Stop and attributes it to the given
- * TimingCategory. Start/Stop can be called multiple times on the same timer, but each call must be
- * appropriately paired.
- *
- * When a Timer is started, it automatically pauses a previously running timer on the same thread,
- * which is resumed when it is stopped. As such, no special action needs to be taken to avoid
- * double-accounting of time on two categories.
- */
-class Timer {
-public:
-    Timer(TimingCategory& category) : category(category) {
-    }
-
-    void Start() {
-#if ENABLE_PROFILING
-        ASSERT(!running);
-        previous_timer = current_timer;
-        current_timer = this;
-        if (previous_timer != nullptr)
-            previous_timer->StopTiming();
-
-        StartTiming();
-#endif
-    }
-
-    void Stop() {
-#if ENABLE_PROFILING
-        ASSERT(running);
-        StopTiming();
-
-        if (previous_timer != nullptr)
-            previous_timer->StartTiming();
-        current_timer = previous_timer;
-#endif
-    }
-
-private:
-#if ENABLE_PROFILING
-    void StartTiming() {
-        start = Clock::now();
-        running = true;
-    }
-
-    void StopTiming() {
-        auto duration = Clock::now() - start;
-        running = false;
-        category.AddTime(std::chrono::duration_cast<Duration>(duration));
-    }
-
-    Clock::time_point start;
-    bool running = false;
-
-    Timer* previous_timer;
-    static thread_local Timer* current_timer;
-#endif
-
-    TimingCategory& category;
-};
-
-/**
- * A Timer that automatically starts timing when created and stops at the end of the scope. Should
- * be used in the majority of cases.
- */
-class ScopeTimer : public Timer {
-public:
-    ScopeTimer(TimingCategory& category) : Timer(category) {
-        Start();
-    }
-
-    ~ScopeTimer() {
-        Stop();
-    }
-};
-
-} // namespace Profiling
-} // namespace Common
diff --git a/src/common/profiler_reporting.h b/src/common/profiler_reporting.h
index df98e05b7..fa1ac883f 100644
--- a/src/common/profiler_reporting.h
+++ b/src/common/profiler_reporting.h
@@ -4,22 +4,17 @@
 
 #pragma once
 
+#include <chrono>
 #include <cstddef>
 #include <vector>
 
-#include "common/profiler.h"
 #include "common/synchronized_wrapper.h"
 
 namespace Common {
 namespace Profiling {
 
-struct TimingCategoryInfo {
-    static const unsigned int NO_PARENT = -1;
-
-    TimingCategory* category;
-    const char* name;
-    unsigned int parent;
-};
+using Clock = std::chrono::high_resolution_clock;
+using Duration = Clock::duration;
 
 struct ProfilingFrameResult {
     /// Time since the last delivered frame
@@ -27,22 +22,12 @@ struct ProfilingFrameResult {
 
     /// Time spent processing a frame, excluding VSync
     Duration frame_time;
-
-    /// Total amount of time spent inside each category in this frame. Indexed by the category id
-    std::vector<Duration> time_per_category;
 };
 
 class ProfilingManager final {
 public:
     ProfilingManager();
 
-    unsigned int RegisterTimingCategory(TimingCategory* category, const char* name);
-    void SetTimingCategoryParent(unsigned int category, unsigned int parent);
-
-    const std::vector<TimingCategoryInfo>& GetTimingCategoriesInfo() const {
-        return timing_categories;
-    }
-
     /// This should be called after swapping screen buffers.
     void BeginFrame();
     /// This should be called before swapping screen buffers.
@@ -54,7 +39,6 @@ public:
     }
 
 private:
-    std::vector<TimingCategoryInfo> timing_categories;
     Clock::time_point last_frame_end;
     Clock::time_point this_frame_start;
 
@@ -73,9 +57,6 @@ struct AggregatedFrameResult {
     AggregatedDuration frame_time;
 
     float fps;
-
-    /// Total amount of time spent inside each category in this frame. Indexed by the category id
-    std::vector<AggregatedDuration> time_per_category;
 };
 
 class TimingResultsAggregator final {
@@ -83,7 +64,6 @@ public:
     TimingResultsAggregator(size_t window_size);
 
     void Clear();
-    void SetNumberOfCategories(size_t n);
 
     void AddFrame(const ProfilingFrameResult& frame_result);
 
@@ -95,7 +75,6 @@ public:
 
     std::vector<Duration> interframe_times;
     std::vector<Duration> frame_times;
-    std::vector<std::vector<Duration>> times_per_category;
 };
 
 ProfilingManager& GetProfilingManager();
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
index 647784208..8d4b26815 100644
--- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
+++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
@@ -10,7 +10,6 @@
 #include "common/common_types.h"
 #include "common/logging/log.h"
 #include "common/microprofile.h"
-#include "common/profiler.h"
 
 #include "core/memory.h"
 #include "core/hle/svc.h"
@@ -25,9 +24,6 @@
 
 #include "core/gdbstub/gdbstub.h"
 
-Common::Profiling::TimingCategory profile_execute("DynCom::Execute");
-Common::Profiling::TimingCategory profile_decode("DynCom::Decode");
-
 enum {
     COND            = (1 << 0),
     NON_BRANCH      = (1 << 1),
@@ -3496,7 +3492,6 @@ static unsigned int InterpreterTranslateInstruction(const ARMul_State* cpu, cons
 }
 
 static int InterpreterTranslateBlock(ARMul_State* cpu, int& bb_start, u32 addr) {
-    Common::Profiling::ScopeTimer timer_decode(profile_decode);
     MICROPROFILE_SCOPE(DynCom_Decode);
 
     // Decode instruction, get index
@@ -3530,7 +3525,6 @@ static int InterpreterTranslateBlock(ARMul_State* cpu, int& bb_start, u32 addr)
 }
 
 static int InterpreterTranslateSingle(ARMul_State* cpu, int& bb_start, u32 addr) {
-    Common::Profiling::ScopeTimer timer_decode(profile_decode);
     MICROPROFILE_SCOPE(DynCom_Decode);
 
     ARM_INST_PTR inst_base = nullptr;
@@ -3565,7 +3559,6 @@ static int clz(unsigned int x) {
 MICROPROFILE_DEFINE(DynCom_Execute, "DynCom", "Execute", MP_RGB(255, 0, 0));
 
 unsigned InterpreterMainLoop(ARMul_State* cpu) {
-    Common::Profiling::ScopeTimer timer_execute(profile_execute);
     MICROPROFILE_SCOPE(DynCom_Execute);
 
     GDBStub::BreakpointAddress breakpoint_data;
diff --git a/src/core/hle/service/gsp_gpu.cpp b/src/core/hle/service/gsp_gpu.cpp
index 211fcf599..233592d7f 100644
--- a/src/core/hle/service/gsp_gpu.cpp
+++ b/src/core/hle/service/gsp_gpu.cpp
@@ -4,7 +4,6 @@
 
 #include "common/bit_field.h"
 #include "common/microprofile.h"
-#include "common/profiler.h"
 
 #include "core/memory.h"
 #include "core/hle/kernel/event.h"
diff --git a/src/core/hle/svc.cpp b/src/core/hle/svc.cpp
index ae54afb1c..a9a1a3244 100644
--- a/src/core/hle/svc.cpp
+++ b/src/core/hle/svc.cpp
@@ -6,7 +6,6 @@
 
 #include "common/logging/log.h"
 #include "common/microprofile.h"
-#include "common/profiler.h"
 #include "common/string_util.h"
 #include "common/symbols.h"
 
@@ -1031,8 +1030,6 @@ static const FunctionDef SVC_Table[] = {
     {0x7D, HLE::Wrap<QueryProcessMemory>,   "QueryProcessMemory"},
 };
 
-Common::Profiling::TimingCategory profiler_svc("SVC Calls");
-
 static const FunctionDef* GetSVCInfo(u32 func_num) {
     if (func_num >= ARRAY_SIZE(SVC_Table)) {
         LOG_ERROR(Kernel_SVC, "unknown svc=0x%02X", func_num);
@@ -1044,7 +1041,6 @@ static const FunctionDef* GetSVCInfo(u32 func_num) {
 MICROPROFILE_DEFINE(Kernel_SVC, "Kernel", "SVC", MP_RGB(70, 200, 70));
 
 void CallSVC(u32 immediate) {
-    Common::Profiling::ScopeTimer timer_svc(profiler_svc);
     MICROPROFILE_SCOPE(Kernel_SVC);
 
     const FunctionDef* info = GetSVCInfo(immediate);
diff --git a/src/video_core/command_processor.cpp b/src/video_core/command_processor.cpp
index 3abe79c09..97ba8214e 100644
--- a/src/video_core/command_processor.cpp
+++ b/src/video_core/command_processor.cpp
@@ -7,7 +7,6 @@
 
 #include "common/alignment.h"
 #include "common/microprofile.h"
-#include "common/profiler.h"
 
 #include "core/settings.h"
 #include "core/hle/service/gsp_gpu.h"
@@ -35,8 +34,6 @@ static int default_attr_counter = 0;
 
 static u32 default_attr_write_buffer[3];
 
-Common::Profiling::TimingCategory category_drawing("Drawing");
-
 // Expand a 4-bit mask to 4-byte mask, e.g. 0b0101 -> 0x00FF00FF
 static const u32 expand_bits_to_bytes[] = {
     0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff,
@@ -186,7 +183,6 @@ static void WritePicaReg(u32 id, u32 value, u32 mask) {
         case PICA_REG_INDEX(trigger_draw):
         case PICA_REG_INDEX(trigger_draw_indexed):
         {
-            Common::Profiling::ScopeTimer scope_timer(category_drawing);
             MICROPROFILE_SCOPE(GPU_Drawing);
 
 #if PICA_LOG_TEV
diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp
index 0434ad05a..9cf77b1f2 100644
--- a/src/video_core/rasterizer.cpp
+++ b/src/video_core/rasterizer.cpp
@@ -9,7 +9,6 @@
 #include "common/common_types.h"
 #include "common/math_util.h"
 #include "common/microprofile.h"
-#include "common/profiler.h"
 
 #include "core/memory.h"
 #include "core/hw/gpu.h"
@@ -287,7 +286,6 @@ static int SignedArea (const Math::Vec2<Fix12P4>& vtx1,
     return Math::Cross(vec1, vec2).z;
 };
 
-static Common::Profiling::TimingCategory rasterization_category("Rasterization");
 MICROPROFILE_DEFINE(GPU_Rasterization, "GPU", "Rasterization", MP_RGB(50, 50, 240));
 
 /**
@@ -300,7 +298,6 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0,
                                     bool reversed = false)
 {
     const auto& regs = g_state.regs;
-    Common::Profiling::ScopeTimer timer(rasterization_category);
     MICROPROFILE_SCOPE(GPU_Rasterization);
 
     // vertex positions in rasterizer coordinates
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 30187d4cf..a8c775c80 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -11,7 +11,6 @@
 #include "common/file_util.h"
 #include "common/math_util.h"
 #include "common/microprofile.h"
-#include "common/profiler.h"
 
 #include "core/memory.h"
 #include "core/settings.h"
diff --git a/src/video_core/shader/shader.cpp b/src/video_core/shader/shader.cpp
index 75301accd..043e99190 100644
--- a/src/video_core/shader/shader.cpp
+++ b/src/video_core/shader/shader.cpp
@@ -9,7 +9,6 @@
 
 #include "common/hash.h"
 #include "common/microprofile.h"
-#include "common/profiler.h"
 
 #include "video_core/debug_utils/debug_utils.h"
 #include "video_core/pica.h"
@@ -57,13 +56,11 @@ void Shutdown() {
 #endif // ARCHITECTURE_x86_64
 }
 
-static Common::Profiling::TimingCategory shader_category("Vertex Shader");
 MICROPROFILE_DEFINE(GPU_VertexShader, "GPU", "Vertex Shader", MP_RGB(50, 50, 240));
 
 OutputVertex Run(UnitState<false>& state, const InputVertex& input, int num_attributes) {
     auto& config = g_state.regs.vs;
 
-    Common::Profiling::ScopeTimer timer(shader_category);
     MICROPROFILE_SCOPE(GPU_VertexShader);
 
     state.program_counter = config.main_offset;