feat: add rss record

include/Cubed/tools/memory_used.hpp

@@ -0,0 +1,26 @@
+#pragma once
+#ifdef _WIN32
+#include <windows.h>
+#include <psapi.h>
+#else
+#include <sys/resource.h>
+#include <unistd.h>
+#include <fstream>
+#endif
+
+inline size_t get_current_rss() {
+#ifdef _WIN32
+    PROCESS_MEMORY_COUNTERS_EX pmc;
+    if (GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc))) {
+        return pmc.WorkingSetSize;
+    }
+    return 0;
+#else
+    std::ifstream statm("/proc/self/statm");
+    long vsz = 0, rss_pages = 0;
+    statm >> vsz >> rss_pages;
+    statm.close();
+    long page_size = sysconf(_SC_PAGESIZE);
+    return rss_pages * page_size;
+#endif
+}

src/app.cpp

@@ -4,6 +4,7 @@
 #include <Cubed/map_table.hpp>
 #include <Cubed/tools/cubed_assert.hpp>
 #include <Cubed/tools/log.hpp>
+#include <Cubed/tools/memory_used.hpp>
 #include <Cubed/tools/perlin_noise.hpp>
 
 #include <exception>
@@ -161,10 +162,11 @@ void App::update() {
     if (fps_time_count >= 1.0f) {
         fps = static_cast<int>(frame_count / fps_time_count);
         std::string title = "Cubed FPS: " + std::to_string(fps);
-        DebugCollector::get().report("fps", std::string{"FPS: " + std::to_string(fps)});
         glfwSetWindowTitle(m_window.get_glfw_window(), title.c_str());
         frame_count = 0;
         fps_time_count = 0.0f;
+        DebugCollector::get().report("fps", std::string{"FPS: " + std::to_string(fps)});
+        DebugCollector::get().report("rss", std::format("RSS: {}mb", get_current_rss() / (1024 * 1024)));
     }
     m_texture_manager.update();
     m_world.update(delta_time);

src/debug_collector.cpp

@@ -17,7 +17,7 @@ void DebugCollector::init_text() {
     Text fps_text("fps");
     Text player_pos_text("player_pos");
     Text rendered_chunk_text("rendered_chunk");
-    
+    Text rss_text("rss");
     version_text
         .position(0.0f, 100.0f)
         .scale(0.8f)
@@ -34,6 +34,10 @@ void DebugCollector::init_text() {
         .text("Rendered Chunk: 0")
         .scale(0.8f)
         .position(0.0, 200.0f);
+    rss_text
+        .text("RSS: 0mb")
+        .scale(0.8f)
+        .position(0.0f, 300.0f);
     std::string os;
     
     Text os_text("os");
@@ -54,6 +58,7 @@ void DebugCollector::init_text() {
     m_texts.insert({player_pos_text.uuid(), std::move(player_pos_text)});
     m_texts.insert({rendered_chunk_text.uuid(), std::move(rendered_chunk_text)});
     m_texts.insert({os_text.uuid(), std::move(os_text)});
+    m_texts.insert({rss_text.uuid(), std::move(rss_text)});
 }
 
 std::unordered_map<std::size_t, Text>& DebugCollector::all_texts() {