4 files changed, 23 insertions, 19 deletions
diff --git a/src/Common/Backends/FileLogger.h b/src/Common/Backends/FileLogger.h
index 8a72bec..09946df 100644
--- a/src/Common/Backends/FileLogger.h
+++ b/src/Common/Backends/FileLogger.h
@@ -36,7 +36,7 @@ class FileLogger : public Logger {
 
   public:
     FileLogger(const std::string &filename)
-    : file(filename.c_str(), std::ios_base::out|std::ios_base::app) {}
+    : file(filename.c_str(), std::ios::out|std::ios::app) {}
 };
 
 }
diff --git a/src/Common/Backends/SystemBackendProc.cpp b/src/Common/Backends/SystemBackendProc.cpp
index 3a3f283..f2d9152 100644
--- a/src/Common/Backends/SystemBackendProc.cpp
+++ b/src/Common/Backends/SystemBackendProc.cpp
@@ -19,30 +19,29 @@
 
 #include "SystemBackendProc.h"
 
-#include <fstream>
 #include <pcrecpp.h>
 
 namespace Mad {
 namespace Common {
 namespace Backends {
 
-SystemBackend::UptimeInfo SystemBackendProc::getUptimeInfo() const {
+SystemBackend::UptimeInfo SystemBackendProc::getUptimeInfo() {
   UptimeInfo uptime = {0, 0};
 
-  std::ifstream file("/proc/uptime");
+  uptimeFile.seekg(0, std::ios::beg);
 
-  if(!file.good())
+  if(!uptimeFile.good())
     return uptime;
 
   float f;
-  file >> f;
-  if(!file.good())
+  uptimeFile >> f;
+  if(!uptimeFile.good())
     return uptime;
 
   uptime.uptime = (unsigned long)f;
 
-  file >> f;
-  if(!file.good())
+  uptimeFile >> f;
+  if(!uptimeFile.good())
     return uptime;
 
   uptime.idleTime = (unsigned long)f;
@@ -50,19 +49,19 @@ SystemBackend::UptimeInfo SystemBackendProc::getUptimeInfo() const {
   return uptime;
 }
 
-SystemBackend::MemoryInfo SystemBackendProc::getMemoryInfo() const {
+SystemBackend::MemoryInfo SystemBackendProc::getMemoryInfo() {
   MemoryInfo memInfo = {0, 0, 0, 0};
 
-  std::ifstream file("/proc/meminfo");
+  meminfoFile.seekg(0, std::ios::beg);
 
-  if(!file.good())
+  if(!meminfoFile.good())
     return memInfo;
 
   pcrecpp::RE re("(.+):\\s*(\\d+).*");
 
-  while(!file.eof() && file.good()) {
+  while(!meminfoFile.eof() && meminfoFile.good()) {
     std::string line;
-    std::getline(file, line);
+    std::getline(meminfoFile, line);
 
     std::string name;
     unsigned long value;
diff --git a/src/Common/Backends/SystemBackendProc.h b/src/Common/Backends/SystemBackendProc.h
index 2a85b86..fb9ecf5 100644
--- a/src/Common/Backends/SystemBackendProc.h
+++ b/src/Common/Backends/SystemBackendProc.h
@@ -22,21 +22,26 @@
 
 #include "../SystemBackend.h"
 
+#include <fstream>
+
 namespace Mad {
 namespace Common {
 namespace Backends {
 
 class SystemBackendProc : public SystemBackend {
   private:
-    SystemBackendProc() {}
+    std::ifstream uptimeFile;
+    std::ifstream meminfoFile;
+
+    SystemBackendProc() : uptimeFile("/proc/uptime"), meminfoFile("/proc/meminfo") {}
 
   public:
     static void useBackend() {
       setBackend(std::auto_ptr<SystemBackend>(new SystemBackendProc()));
     }
 
-    virtual UptimeInfo getUptimeInfo() const;
-    virtual MemoryInfo getMemoryInfo() const;
+    virtual UptimeInfo getUptimeInfo();
+    virtual MemoryInfo getMemoryInfo();
 };
 
 }
diff --git a/src/Common/SystemBackend.h b/src/Common/SystemBackend.h
index 8942ff0..9157e07 100644
--- a/src/Common/SystemBackend.h
+++ b/src/Common/SystemBackend.h
@@ -52,12 +52,12 @@ class SystemBackend {
 
     virtual ~SystemBackend() {}
 
-    virtual UptimeInfo getUptimeInfo() const {
+    virtual UptimeInfo getUptimeInfo() {
       UptimeInfo ret = {0, 0};
       return ret;
     }
 
-    virtual MemoryInfo getMemoryInfo() const {
+    virtual MemoryInfo getMemoryInfo() {
       MemoryInfo ret = {0, 0, 0, 0};
       return ret;
     }