From 31bf2ba85b17b9085681eb4fdaca940e6f4c17e3 Mon Sep 17 00:00:00 2001
From: Paweł Redman <pawel.redman@gmail.com>
Date: Fri, 13 Apr 2018 00:03:20 +0200
Subject: Show RSS on Linux.

---
 src/common.hpp         |  8 ++++++++
 src/game/interface.cpp | 31 ++++++++++++++++++-------------
 src/main.cpp           | 29 +++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 13 deletions(-)

(limited to 'src')

diff --git a/src/common.hpp b/src/common.hpp
index 3d7483d..7d3a1f9 100644
--- a/src/common.hpp
+++ b/src/common.hpp
@@ -28,6 +28,10 @@ along with Minitrem.  If not, see <http://www.gnu.org/licenses/>.
 #include <SFML/Audio.hpp>
 #include "math.hpp"
 
+#ifdef __linux
+#define CONFIG_SHOW_RSS
+#endif
+
 #define COUNT(A) (sizeof(A) / sizeof((A)[0]))
 
 extern bool debug_draw_cmodels;
@@ -63,6 +67,10 @@ public:
 extern freq_counter_t fc_render;
 extern freq_counter_t fc_game;
 
+#ifdef CONFIG_SHOW_RSS
+size_t sys_get_rss(void);
+#endif
+
 namespace procgen {
 	class prng_t {
 		uint32_t state = 0;
diff --git a/src/game/interface.cpp b/src/game/interface.cpp
index c6d5e19..d249f38 100644
--- a/src/game/interface.cpp
+++ b/src/game/interface.cpp
@@ -371,18 +371,19 @@ void state_t::render_to(render::state_t *render)
 		x[1] += em;
 	}
 	
-	x = v2f_t(0.0f, h - em * 5.5);
-	ss << "World S/T:";
-	ss << game->world.stats.sectors << "/";
-	ss << game->world.stats.tiles;
+	x = v2f_t(0.0f, h - em * 1.5);
+
+	ss << std::fixed << std::setprecision(3);
+	ss << "Game t/F/B: " << game->time * 1.0e-9 << "/" << game->frames << "/" << game->frames_behind;
 	render->render_text(x, em, ss.str(), render::ALIGN_LEFT_TOP, sf::Color::White);
 
-	x[1] += em;
+	x[1] -= em;
 	ss.str(std::string());
-	ss << "Awake: " << game->awake_entities.size() << "/" << game->world.stats.entities;
+	ss << std::fixed << std::setprecision(1);
+	ss << "FPS: " << fc_render.freq_ma() << ", " << fc_game.freq_ma() << " Hz";
 	render->render_text(x, em, ss.str(), render::ALIGN_LEFT_TOP, sf::Color::White);
 
-	x[1] += em;
+	x[1] -= em;
 	ss.str(std::string());
 	ss << "View S/T/E: ";
 	ss << render->stats.sectors << "/";
@@ -390,16 +391,20 @@ void state_t::render_to(render::state_t *render)
 	ss << render->stats.entities;
 	render->render_text(x, em, ss.str(), render::ALIGN_LEFT_TOP, sf::Color::White);
 
-	x[1] += em;
+	x[1] -= em;
 	ss.str(std::string());
-	ss << std::fixed << std::setprecision(1);
-	ss << "FPS: " << fc_render.freq_ma() << ", " << fc_game.freq_ma() << " Hz";
+	ss << "Awake: " << game->awake_entities.size() << "/" << game->world.stats.entities;
 	render->render_text(x, em, ss.str(), render::ALIGN_LEFT_TOP, sf::Color::White);
 
-	x[1] += em;
+	x[1] -= em;
 	ss.str(std::string());
-	ss << std::fixed << std::setprecision(3);
-	ss << "Game t/F/B: " << game->time * 1.0e-9 << "/" << game->frames << "/" << game->frames_behind;
+	ss << "World S/T:";
+	ss << game->world.stats.sectors << "/";
+	ss << game->world.stats.tiles;
+#ifdef CONFIG_SHOW_RSS
+	ss << ", " << sys_get_rss() / 1000000.0f;
+	ss << "MB RSS";
+#endif
 	render->render_text(x, em, ss.str(), render::ALIGN_LEFT_TOP, sf::Color::White);
 }
 
diff --git a/src/main.cpp b/src/main.cpp
index 1e43d76..cb6d753 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -17,6 +17,11 @@ along with Minitrem.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "common.hpp"
 #include <chrono>
+#ifdef CONFIG_SHOW_RSS
+#include <sys/types.h>
+#include <unistd.h>
+#include <fstream>
+#endif
 
 bool debug_draw_cmodels = false;
 bool debug_draw_paths = false;
@@ -85,6 +90,28 @@ float freq_counter_t::freq_ma(void)
 freq_counter_t fc_render = freq_counter_t(20);
 freq_counter_t fc_game = freq_counter_t(10);
 
+#ifdef CONFIG_SHOW_RSS
+size_t sys_get_rss(void)
+{
+	std::ifstream file;
+	pid_t pid;
+	std::string line;
+	size_t res = 0;
+
+	pid = getpid();
+
+	file.open("/proc/" + std::to_string(pid) + "/status");
+	while (file >> line) {
+		if (line == "VmRSS:") {
+			file >> res;
+			break;
+		}
+	}
+
+	return res * 1024;
+}
+#endif
+
 int main()
 {
 	nclock_ref = nclock() - 1;
@@ -117,6 +144,8 @@ int main()
 		if (!window.isOpen())
 			break;
 
+		sys_get_rss();
+
 		window.clear();
 		render.begin_frame(now, dt);
 		render.render(&game);
-- 
cgit