#include <RecoveryServer.h>

Inheritance diagram for RecoveryServer:

Public Member Functions
	RecoveryServer ()
	Class constructor function. More...

Public Member Functions inherited from ChannelServer< RecoveryServer, RecoveryMessage >
	ChannelServer (RecoveryServer *inst)
	Constructor function. More...

virtual	~ChannelServer ()
	Destructor function. More...

int	run ()
	Enters an infinite loop, serving incoming requests. More...

void	setTimeout (const uint msec)
	Set a sleep timeout. More...

Private Member Functions
void	restartProcess (RecoveryMessage *msg)
	Restart a process. More...

bool	reloadProgram (const ProcessID pid, const char *path) const
	Overwrite the given process by fetching a fresh program data copy. More...

bool	cleanupProgram (const ProcessID pid) const
	Release and unmap program data. More...

bool	rewriteProgram (const ProcessID pid, const Address program, const Size size) const
	Overwrite process with given program data. More...

Additional Inherited Members
Public Types inherited from ChannelServer< RecoveryServer, RecoveryMessage >
enum	Result
	Result codes. More...

Protected Types inherited from ChannelServer< RecoveryServer, RecoveryMessage >
typedef void(RecoveryServer ::*	IPCHandlerFunction) (RecoveryMessage *)
	Member function pointer inside Base, to handle IPC messages. More...

typedef void(RecoveryServer ::*	IRQHandlerFunction) (Size)
	Member function pointer inside Base, to handle interrupts. More...

Protected Member Functions inherited from ChannelServer< RecoveryServer, RecoveryMessage >
void	addIPCHandler (const Size slot, IPCHandlerFunction h, const bool sendReply=true)
	Register a new IPC message action handler. More...

void	addIRQHandler (const Size slot, IRQHandlerFunction h)
	Register a new IRQ message vector handler. More...

virtual void	timeout ()
	Called when sleep timeout is reached. More...

virtual bool	retryRequests ()
	Retry any pending requests. More...

virtual void	onProcessTerminated (const ProcessID pid)
	Called whenever another Process is terminated. More...

void	retryAllRequests ()
	Keep retrying requests until all served. More...

Protected Attributes inherited from ChannelServer< RecoveryServer, RecoveryMessage >
RecoveryServer *	m_instance
	Server object instance. More...

ChannelClient *	m_client
	Client for sending replies. More...

ChannelRegistry &	m_registry
	Contains registered channels. More...

MemoryChannel	m_kernelEvent
	Kernel event channel. More...

Index< MessageHandler< IPCHandlerFunction >, MaximumHandlerCount >	m_ipcHandlers
	IPC handler functions. More...

Index< MessageHandler< IRQHandlerFunction >, MaximumHandlerCount >	m_irqHandlers
	IRQ handler functions. More...

ProcessID	m_self
	ProcessID of ourselves. More...

Timer::Info	m_time
	System timer value. More...

Timer::Info	m_expiry
	System timer expiration value. More...

Detailed Description

Recovery Server.

Provides fault tolerance to servers by restarting on errors (recovery)

Todo:: Support automatic restart of a process when a CPU exception occurs

Todo:: Pro-actively send ping/pong requests to processes to verify they are still running properly and are not inside an infinite loop.

Todo:: Modify FileSystemServer to use new peek() and seek() functions of MemoryChannel to support mid-transaction recovery.

Todo:: Update various servers to actually use the DatastoreServer for storing persistent data that needs to be preserved on restart. For example, the block cache in TmpFileSystem.

Todo:: Add a fault injection tester that modifies the memory of running programs to introduce/simulate software errors and verify that the system keeps running while the programs are restarted.

Definition at line 53 of file RecoveryServer.h.