Display memory stats on the hud

src/memory.cpp

@@ -3,8 +3,11 @@
 #include <cstring>
 #include <stdio.h>
 #include <iostream>
+#include <thread>
 
 struct memory_information mem_info;
+pthread_t memoryThread;
+float memused, memmax;
 
 FILE *open_file(const char *file, int *reported) {
   FILE *fp = nullptr;
@@ -22,7 +25,7 @@ FILE *open_file(const char *file, int *reported) {
   return fp;
 }
 
-void update_meminfo() {
+void *update_meminfo(void *) {
   FILE *meminfo_fp;
   static int reported = 0;
 
@@ -90,7 +93,9 @@ void update_meminfo() {
   mem_info.bufmem = curbufmem;
   mem_info.memeasyfree = cureasyfree;
 	
-  std::cout << (float(mem_info.memmax) - float(mem_info.memeasyfree)) / (1024 * 1024) << " / " << float(mem_info.memmax) / (1024 * 1024) << std::endl;
+  memused = (float(mem_info.memmax) - float(mem_info.memeasyfree)) / (1024 * 1024);
+  memmax = float(mem_info.memmax) / (1024 * 1024);
 
   fclose(meminfo_fp);
+  return NULL;
 }

src/memory.h

@@ -1,6 +1,9 @@
 #include <stdio.h>
 #include <thread>
 
+extern pthread_t memoryThread;
+extern float memused, memmax;
+
 struct memory_information {
   /* memory information in kilobytes */
   unsigned long long mem, memwithbuffers, memeasyfree, memfree, memmax,
@@ -9,5 +12,5 @@ struct memory_information {
   unsigned long long bufmem, buffers, cached;
 };
 
-void update_meminfo(void);
+void *update_meminfo(void*);
 FILE *open_file(const char *file, int *reported);

src/overlay.cpp

@@ -976,6 +976,9 @@ static void snapshot_swapchain_frame(struct swapchain_data *data)
                 pthread_create(&gpuThread, NULL, &getAmdGpuUsage, NULL);
             }
 
+            // get ram usage/max
+               pthread_create(&memoryThread, NULL, &update_meminfo, NULL);
+
             // update variables for logging
             // cpuLoadLog = cpuArray[0].value;
             gpuLoadLog = gpuLoad;
@@ -1169,6 +1172,9 @@ static void compute_swapchain_display(struct swapchain_data *data)
             i++;
          }
       }
+      ImGui::TextColored(ImVec4(0.671, 0.251, 0.753, 1.00f), "MEM");
+      ImGui::SameLine(hudFirstRow);
+      ImGui::Text("%.1fG/%.1fG", memused, memmax);
       if (instance_data->params.enabled[OVERLAY_PARAM_ENABLED_fps]){
          ImGui::TextColored(ImVec4(0.925, 0.411, 0.411, 1.00f), "%s", engineName.c_str());
          ImGui::SameLine(hudFirstRow);
@@ -1189,7 +1195,6 @@ static void compute_swapchain_display(struct swapchain_data *data)
             ImGui::PopFont();
          }
       }
-
       // ImGui::ProgressBar(float(0.5), ImVec2(ImGui::GetContentRegionAvailWidth(), 21), NULL);
       ImGui::Dummy(ImVec2(0.0f, 20.0f));