2 files changed, 201 insertions, 0 deletions
diff --git a/src/modules/SystemBackendProc/SystemBackendProc.cpp b/src/modules/SystemBackendProc/SystemBackendProc.cpp
new file mode 100644
index 0000000..68f9cec
--- /dev/null
+++ b/src/modules/SystemBackendProc/SystemBackendProc.cpp
@@ -0,0 +1,134 @@
+/*
+ * SystemBackendProc.cpp
+ *
+ * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "SystemBackendProc.h"
+
+#include <Common/ActionManager.h>
+
+#include <cstdio>
+#include <cstring>
+
+#include <boost/bind.hpp>
+
+#define init SystemBackendProc_LTX_init
+#define deinit SystemBackendProc_LTX_deinit
+
+namespace Mad {
+namespace Modules {
+
+SystemBackendProc *SystemBackendProc::backend = 0;
+
+bool SystemBackendProc::getUptimeInfo(const boost::function2<void, unsigned long, unsigned long> &callback) {
+  unsigned long uptime = 0, idleTime = 0;
+
+  uptimeFile.seekg(0, std::ios::beg);
+
+  if(!uptimeFile.good())
+    return false;
+
+  float f;
+  uptimeFile >> f;
+  if(!uptimeFile.good())
+    return false;
+
+  uptime = (unsigned long)f;
+
+  uptimeFile >> f;
+  if(uptimeFile.good())
+    idleTime = (unsigned long)f;
+
+  Common::ActionManager::get()->add(boost::bind(callback, uptime, idleTime));
+
+  return true;
+}
+
+bool SystemBackendProc::getMemoryInfo(const boost::function4<void, unsigned long, unsigned long, unsigned long, unsigned long> &callback) {
+  unsigned long totalMem = 0, freeMem = 0, totalSwap = 0, freeSwap = 0;
+
+  meminfoFile.seekg(0, std::ios::beg);
+
+  if(!meminfoFile.good())
+    return false;
+
+  while(!meminfoFile.eof() && meminfoFile.good()) {
+    std::string line;
+    std::getline(meminfoFile, line);
+
+    char *name = new char[line.length()+1]; // is always long enough
+    unsigned long value;
+
+    if(std::sscanf(line.c_str(), "%s %lu", name, &value) == 2) {
+      if(std::strcmp(name, "MemTotal:") == 0)
+        totalMem = value;
+      else if(std::strcmp(name, "MemFree:") == 0)
+        freeMem = value;
+      else if(std::strcmp(name, "SwapTotal:") == 0)
+        totalSwap = value;
+      else if(std::strcmp(name, "SwapFree:") == 0)
+        freeSwap = value;
+    }
+
+    delete [] name;
+
+    if(totalMem && freeMem && totalSwap && freeSwap)
+      break;
+  }
+
+  Common::ActionManager::get()->add(boost::bind(callback, totalMem, freeMem, totalSwap, freeSwap));
+
+  return true;
+}
+
+bool SystemBackendProc::getLoadInfo(const boost::function5<void, unsigned long, unsigned long, float, float, float> &callback) {
+  unsigned long currentLoad = 0, nProcesses = 0;
+  float loadAvg1 = 0, loadAvg5 = 0, loadAvg15 = 0;
+
+  loadFile.seekg(0, std::ios::beg);
+
+  if(!loadFile.good())
+    return false;
+
+  std::string line;
+  std::getline(loadFile, line);
+
+  if(line.empty())
+    return false;
+
+  std::sscanf(line.c_str(), "%f %f %f %lu/%lu", &loadAvg1, &loadAvg5, &loadAvg15, &currentLoad, &nProcesses);
+
+  Common::ActionManager::get()->add(boost::bind(callback, currentLoad, nProcesses, loadAvg1, loadAvg5, loadAvg15));
+
+  return true;
+}
+
+}
+}
+
+
+extern "C" {
+
+void init() {
+  Mad::Modules::SystemBackendProc::registerBackend();
+}
+
+void deinit() {
+  Mad::Modules::SystemBackendProc::unregisterBackend();
+}
+
+}
diff --git a/src/modules/SystemBackendProc/SystemBackendProc.h b/src/modules/SystemBackendProc/SystemBackendProc.h
new file mode 100644
index 0000000..bf19e22
--- /dev/null
+++ b/src/modules/SystemBackendProc/SystemBackendProc.h
@@ -0,0 +1,67 @@
+/*
+ * SystemBackendProc.h
+ *
+ * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MAD_MODULES_SYSTEMBACKENDPROC_H_
+#define MAD_MODULES_SYSTEMBACKENDPROC_H_
+
+#include <Common/SystemBackend.h>
+
+#include <fstream>
+
+namespace Mad {
+namespace Modules {
+
+class SystemBackendProc : private Common::SystemBackend {
+  private:
+    static SystemBackendProc *backend;
+
+    std::ifstream uptimeFile;
+    std::ifstream meminfoFile;
+    std::ifstream loadFile;
+
+    SystemBackendProc() : uptimeFile("/proc/uptime"), meminfoFile("/proc/meminfo"), loadFile("/proc/loadavg") {}
+
+  protected:
+    virtual bool getUptimeInfo(const boost::function2<void, unsigned long, unsigned long> &callback);
+    virtual bool getMemoryInfo(const boost::function4<void, unsigned long, unsigned long, unsigned long, unsigned long> &callback);
+    virtual bool getLoadInfo(const boost::function5<void, unsigned long, unsigned long, float, float, float> &callback);
+
+  public:
+    static void registerBackend() {
+      if(backend)
+        return;
+
+      backend = new SystemBackendProc();
+      Common::SystemManager::get()->registerBackend(backend);
+    }
+
+    static void unregisterBackend() {
+      if(!backend)
+        return;
+
+      Common::SystemManager::get()->unregisterBackend(backend);
+      delete backend;
+      backend = 0;
+    }
+};
+
+}
+}
+
+#endif /* MAD_MODULES_SYSTEMBACKENDPROC_H_ */