wrench::ComputeThread Class Reference

A one-shot service that simulates a CPU-bound thread that performs a given number of flops and then reports to some mailbox saying "I am done". More...

#include <ComputeThread.h>

Inheritance diagram for wrench::ComputeThread:
wrench::Service wrench::S4U_Daemon

Public Member Functions

 ComputeThread (std::string hostname, double flops, std::string reply_mailbox)
 Constructor. More...
 
void cleanup (bool has_returned_from_main, int return_value) override
 Cleanup method that overrides the base method and does nothing as a compute thread does not need to implement any particular fault-tolerant behavior (it runs on the same how as a workunit executor, which is also dead anyway) More...
 
void kill ()
 Terminate (brutally) the compute thread.
 
int main () override
 The main method of the compute thread. More...
 
- Public Member Functions inherited from wrench::Service
void assertServiceIsUp ()
 Throws an exception if the service is not up. More...
 
std::string getHostname ()
 Get the name of the host on which the service is / will be running. More...
 
double getMessagePayloadValue (std::string)
 Get a message payload of the Service as a double. More...
 
double getNetworkTimeoutValue ()
 Returns the service's network timeout value. More...
 
bool getPropertyValueAsBoolean (std::string)
 Get a property of the Service as a boolean. More...
 
double getPropertyValueAsDouble (std::string)
 Get a property of the Service as a double. More...
 
std::string getPropertyValueAsString (std::string)
 Get a property of the Service as a string. More...
 
unsigned long getPropertyValueAsUnsignedLong (std::string)
 Get a property of the Service as an unsigned long. More...
 
bool isUp ()
 Returns true if the service is UP, false otherwise. More...
 
void resume ()
 Resume the service. More...
 
void setNetworkTimeoutValue (double value)
 Sets the service's network timeout value. More...
 
void setStateToDown ()
 Set the state of the service to DOWN.
 
void start (std::shared_ptr< Service > this_service, bool daemonize, bool auto_restart)
 Start the service. More...
 
virtual void stop ()
 Synchronously stop the service (does nothing if the service is already stopped) More...
 
void suspend ()
 Suspend the service.
 
- Public Member Functions inherited from wrench::S4U_Daemon
 S4U_Daemon (std::string hostname, std::string process_name_prefix, std::string mailbox_prefix)
 Constructor (daemon with a mailbox) More...
 
virtual ~S4U_Daemon ()
 
void createLifeSaver (std::shared_ptr< S4U_Daemon > reference)
 Create a life saver for the daemon. More...
 
std::string getName ()
 Retrieve the process name. More...
 
int getReturnValue ()
 Returns the value returned by main() (if the daemon has returned from main) More...
 
S4U_Daemon::State getState ()
 Get the daemon's state. More...
 
bool hasReturnedFromMain ()
 Returns true if the daemon has returned from main() (i.e., not brutally killed) More...
 
bool isDaemonized ()
 Return the daemonized status of the daemon. More...
 
bool isSetToAutoRestart ()
 Return the auto-restart status of the daemon. More...
 
std::pair< bool, int > join ()
 Join (i.e., wait for) the daemon. More...
 
void resumeActor ()
 Resume the daemon/actor.
 
void setupOnExitFunction ()
 Sets up the on_exit functionf for the actor.
 
void startDaemon (bool daemonized, bool auto_restart)
 Start the daemon. More...
 
void suspendActor ()
 Suspend the daemon/actor.
 

Additional Inherited Members

- Public Types inherited from wrench::S4U_Daemon
enum  State { UP, DOWN, SUSPENDED }
 Daemon states. More...
 
- Static Public Member Functions inherited from wrench::Service
static void cleanupTrackedServices ()
 Go through the tracked services and remove all entries with a refcount of 1!
 
static void clearTrackedServices ()
 Forget all tracked services.
 
static void increaseNumCompletedServicesCount ()
 Increase the completed service count.
 
- Public Attributes inherited from wrench::S4U_Daemon
std::string hostname
 The name of the host on which the daemon is running.
 
std::string initial_mailbox_name
 The initial name of the daemon's mailbox.
 
LifeSaver * life_saver = nullptr
 The daemon's life saver.
 
std::string mailbox_name
 The current name of the daemon's mailbox.
 
std::string process_name
 The name of the daemon.
 
Simulationsimulation
 a pointer to the simulation object
 
- Protected Member Functions inherited from wrench::Service
 Service (std::string hostname, std::string process_name_prefix, std::string mailbox_name_prefix)
 Constructor. More...
 
 ~Service ()
 Destructor.
 
template<class T >
std::shared_ptr< T > getSharedPtr ()
 Method to retrieve the shared_ptr to a service. More...
 
void serviceSanityCheck ()
 Check whether the service is properly configured and running. More...
 
void setMessagePayload (std::string, double)
 Set a message payload of the Service. More...
 
void setMessagePayloads (std::map< std::string, double > default_messagepayload_values, std::map< std::string, double > overriden_messagepayload_values)
 Set default and user-defined message payloads. More...
 
void setProperties (std::map< std::string, std::string > default_property_values, std::map< std::string, std::string > overriden_property_values)
 Set default and user-defined properties. More...
 
void setProperty (std::string, std::string)
 Set a property of the Service. More...
 
- Protected Member Functions inherited from wrench::S4U_Daemon
void acquireDaemonLock ()
 Lock the daemon's lock.
 
void killActor ()
 Kill the daemon/actor (does nothing if already dead) More...
 
void releaseDaemonLock ()
 Unlock the daemon's lock.
 
void runMainMethod ()
 Method that run's the user-defined main method (that's called by the S4U actor class)
 
- Static Protected Member Functions inherited from wrench::Service
static void assertServiceIsUp (std::shared_ptr< Service > s)
 Assert for the service being up. More...
 
template<class T >
static std::shared_ptr< T > getServiceByName (std::string name)
 Method to retrieve the shared_ptr to a service based on the service's name (not efficient) More...
 
- Protected Attributes inherited from wrench::Service
std::map< std::string, double > messagepayload_list
 The service's messagepayload list.
 
std::string name
 The service's name.
 
double network_timeout = 30.0
 The time (in seconds) after which a service that doesn't send back a reply (control) message causes a NetworkTimeOut exception. (default: 30 second; if <0 never timeout)
 
std::map< std::string, std::string > property_list
 The service's property list.
 
- Protected Attributes inherited from wrench::S4U_Daemon
unsigned int num_starts = 0
 The number of time that this daemon has started (i.e., 1 + number of restarts)
 
State state
 The service's state.
 

Detailed Description

A one-shot service that simulates a CPU-bound thread that performs a given number of flops and then reports to some mailbox saying "I am done".

Constructor & Destructor Documentation

◆ ComputeThread()

wrench::ComputeThread::ComputeThread ( std::string  hostname,
double  flops,
std::string  reply_mailbox 
)

Constructor.

Parameters
hostnamethe host on which the compute thread should run
flopsthe number of flops to perform
reply_mailboxthe mailbox to which the "done/failed" message should be sent

Member Function Documentation

◆ cleanup()

void wrench::ComputeThread::cleanup ( bool  has_returned_from_main,
int  return_value 
)
overridevirtual

Cleanup method that overrides the base method and does nothing as a compute thread does not need to implement any particular fault-tolerant behavior (it runs on the same how as a workunit executor, which is also dead anyway)

Parameters
has_returned_from_mainwhether the daemon has terminated cleanly (i.e., returned from main)
return_valuemain's return value

Reimplemented from wrench::S4U_Daemon.

◆ main()

int wrench::ComputeThread::main ( )
overridevirtual

The main method of the compute thread.

Returns

Implements wrench::S4U_Daemon.


The documentation for this class was generated from the following files: