From 89551ddfc2879530981eba3db9ab857b88409ad8 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Sat, 20 Sep 2008 11:59:36 +0200
Subject: Lese /proc/loadavg f?r weitere Statusinformationen aus

---
 src/Common/Backends/SystemBackendProc.cpp           | 20 ++++++++++++++++++++
 src/Common/Backends/SystemBackendProc.h             |  4 +++-
 src/Common/RequestHandlers/StatusRequestHandler.cpp |  3 ++-
 src/Common/SystemBackend.h                          | 14 ++++++++++++++
 4 files changed, 39 insertions(+), 2 deletions(-)

(limited to 'src/Common')

diff --git a/src/Common/Backends/SystemBackendProc.cpp b/src/Common/Backends/SystemBackendProc.cpp
index f2d9152..51e14f8 100644
--- a/src/Common/Backends/SystemBackendProc.cpp
+++ b/src/Common/Backends/SystemBackendProc.cpp
@@ -20,6 +20,7 @@
 #include "SystemBackendProc.h"
 
 #include <pcrecpp.h>
+#include <cstdio>
 
 namespace Mad {
 namespace Common {
@@ -86,6 +87,25 @@ SystemBackend::MemoryInfo SystemBackendProc::getMemoryInfo() {
   return memInfo;
 }
 
+SystemBackend::LoadInfo SystemBackendProc::getLoadInfo() {
+  LoadInfo loadInfo = {0, 0, 0, 0, 0};
+
+  loadFile.seekg(0, std::ios::beg);
+
+  if(!loadFile.good())
+    return loadInfo;
+
+  std::string line;
+  std::getline(loadFile, line);
+
+  if(line.empty())
+    return loadInfo;
+
+  std::sscanf(line.c_str(), "%f %f %f %lu/%lu", &loadInfo.loadAvg1, &loadInfo.loadAvg5, &loadInfo.loadAvg15, &loadInfo.currentLoad, &loadInfo.nProcesses);
+
+  return loadInfo;
+}
+
 }
 }
 }
diff --git a/src/Common/Backends/SystemBackendProc.h b/src/Common/Backends/SystemBackendProc.h
index fb9ecf5..8caa080 100644
--- a/src/Common/Backends/SystemBackendProc.h
+++ b/src/Common/Backends/SystemBackendProc.h
@@ -32,8 +32,9 @@ class SystemBackendProc : public SystemBackend {
   private:
     std::ifstream uptimeFile;
     std::ifstream meminfoFile;
+    std::ifstream loadFile;
 
-    SystemBackendProc() : uptimeFile("/proc/uptime"), meminfoFile("/proc/meminfo") {}
+    SystemBackendProc() : uptimeFile("/proc/uptime"), meminfoFile("/proc/meminfo"), loadFile("/proc/loadavg") {}
 
   public:
     static void useBackend() {
@@ -42,6 +43,7 @@ class SystemBackendProc : public SystemBackend {
 
     virtual UptimeInfo getUptimeInfo();
     virtual MemoryInfo getMemoryInfo();
+    virtual LoadInfo getLoadInfo();
 };
 
 }
diff --git a/src/Common/RequestHandlers/StatusRequestHandler.cpp b/src/Common/RequestHandlers/StatusRequestHandler.cpp
index a3f8675..6280ab3 100644
--- a/src/Common/RequestHandlers/StatusRequestHandler.cpp
+++ b/src/Common/RequestHandlers/StatusRequestHandler.cpp
@@ -41,9 +41,10 @@ void StatusRequestHandler::handlePacket(Net::Connection *connection, const Net::
 
   SystemBackend::UptimeInfo uptimeInfo = SystemBackend::getBackend()->getUptimeInfo();
   SystemBackend::MemoryInfo memInfo = SystemBackend::getBackend()->getMemoryInfo();
+  SystemBackend::LoadInfo loadInfo = SystemBackend::getBackend()->getLoadInfo();
 
   connection->send(Net::Packets::HostStatusPacket(Net::Packet::OK, packet.getRequestId(), uptimeInfo.uptime, uptimeInfo.idleTime,
-      memInfo.totalMem, memInfo.freeMem, memInfo.totalSwap, memInfo.freeSwap));
+      memInfo.totalMem, memInfo.freeMem, memInfo.totalSwap, memInfo.freeSwap, loadInfo.currentLoad, loadInfo.nProcesses, loadInfo.loadAvg1, loadInfo.loadAvg5, loadInfo.loadAvg15));
 
   signalFinished().emit();
 }
diff --git a/src/Common/SystemBackend.h b/src/Common/SystemBackend.h
index 9157e07..8ba1e7d 100644
--- a/src/Common/SystemBackend.h
+++ b/src/Common/SystemBackend.h
@@ -21,6 +21,7 @@
 #define MAD_COMMON_SYSTEMBACKEND_H_
 
 #include <stdint.h>
+#include <string>
 #include <memory>
 
 namespace Mad {
@@ -50,6 +51,14 @@ class SystemBackend {
       unsigned long freeSwap;
     };
 
+    struct LoadInfo {
+      unsigned long currentLoad;
+      unsigned long nProcesses;
+      float loadAvg1;
+      float loadAvg5;
+      float loadAvg15;
+    };
+
     virtual ~SystemBackend() {}
 
     virtual UptimeInfo getUptimeInfo() {
@@ -62,6 +71,11 @@ class SystemBackend {
       return ret;
     }
 
+    virtual LoadInfo getLoadInfo() {
+      LoadInfo ret = {0, 0, 0, 0, 0};
+      return ret;
+    }
+
     static SystemBackend *getBackend() {
       return backend.get();
     }
-- 
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