- add support for a future timeout callback mechanism

svn path=/trunk/; revision=33712

reactos/tools/sysreg/sysreg.rbuild

@@ -21,4 +21,5 @@
 	<file>sysreg.cpp</file>
 	<file>file_reader.cpp</file>
 	<file>os_support.cpp</file>
+	<file>timer_command_callback.cpp</file>
 </module>

reactos/tools/sysreg/timer_callback.h

@@ -0,0 +1,56 @@
+#ifndef TIMER_CALLBACK_H__
+#define TIMER_CALLBACK_H__
+
+
+namespace System_
+{
+//---------------------------------------------------------------------------------------
+///
+/// TimerCallback
+///
+/// Description: base class for all timer callback functions
+
+    class TimerCallback
+    {
+	public:
+//---------------------------------------------------------------------------------------
+///
+/// TimerCallback
+///
+/// Description: constructor of class TimerCallback
+
+    TimerCallback() {}
+
+//---------------------------------------------------------------------------------------
+///
+/// TimerCallback
+///
+/// Description: destructor of class TimerCallback
+
+    virtual ~TimerCallback() {}
+
+
+//---------------------------------------------------------------------------------------
+///
+/// initialize
+///
+/// Description: this function is called when the timercallback object is initialized in
+/// in the callback mechanism
+
+    virtual bool initialize(){ return true;}
+
+
+//---------------------------------------------------------------------------------------
+///
+/// hasExpired
+///
+/// Description: this function is called everytime timer event has started. The callback object
+/// should return true if the expiration function has expired.
+/// Note: the function should then also cleanup all consumed resourced
+
+    virtual bool hasExpired() = 0;
+    }; //end of class TimerCallback
+
+}// end of namespace System_
+
+#endif

reactos/tools/sysreg/timer_command_callback.cpp

@@ -0,0 +1,41 @@
+#include "timer_command_callback.h"
+
+
+namespace System_
+{
+    using Sysreg_::ConfigParser;
+
+    string TimerCommandCallback::ROS_TIMER_COMMAND="ROS_TIMER_COMMAND";
+    string TimerCommandCallback::ROS_TIMER_TIMEOUT="ROS_TIMER_TIMEOUT";
+
+//---------------------------------------------------------------
+    TimerCommandCallback::TimerCommandCallback(ConfigParser &conf_parser) : TimerCallback(), m_parser(conf_parser), m_Cmd(""), m_Timeout(0)
+    {
+    }
+//---------------------------------------------------------------
+    TimerCommandCallback::~TimerCommandCallback()
+    {
+    }
+//---------------------------------------------------------------
+    bool TimerCommandCallback::initialize()
+    {
+        m_parser.getStringValue(ROS_TIMER_COMMAND, m_Cmd);
+        m_parser.getIntValue(ROS_TIMER_TIMEOUT, m_Timeout);
+        //FIXME
+        // calculate current time 
+
+        return true;
+    }
+
+//---------------------------------------------------------------
+    bool TimerCommandCallback::hasExpired()
+    {
+
+        // FIXME
+        // calculate current time
+        // calculate difference
+        // and invoke m_Cmd when it has expired
+        return false;
+    }
+
+} // end of namespace System_

reactos/tools/sysreg/timer_command_callback.h

@@ -0,0 +1,57 @@
+#ifndef TIMER_COMMAND_CALLBACK_H__ //timer_command_callback.h
+#define TIMER_COMMAND_CALLBACK_H__
+
+#include "conf_parser.h"
+#include "timer_callback.h"
+
+namespace System_
+{
+
+    class TimerCommandCallback : public TimerCallback
+    {
+    public:
+//---------------------------------------------------------------
+///
+/// TimerCommandCallback
+///
+/// Description: constructor of class TimerCommandCallback
+///
+/// @param conf_parser contains configuration data
+
+          TimerCommandCallback(Sysreg_::ConfigParser &conf_parser);
+
+//---------------------------------------------------------------
+///
+/// ~TimerCommandCallback
+///
+/// Description: destructor of class TimerCommandCallback
+
+          virtual ~TimerCommandCallback();
+
+//---------------------------------------------------------------
+///
+/// initialize
+///
+/// Description: initializes the callback object
+
+          virtual bool initialize();
+
+//---------------------------------------------------------------
+///
+/// hasExpired
+///
+/// Description: returns true when the callback object has expired
+
+          virtual bool hasExpired();
+    protected:
+        Sysreg_::ConfigParser & m_parser;
+        string m_Cmd;
+        long int m_Timeout;
+        static string ROS_TIMER_TIMEOUT;
+        static string ROS_TIMER_COMMAND;
+    };
+
+} /* EOF namspace System_ */
+
+
+#endif /* EOF TIMER_COMMAND_CALLBACK_H__ */