Here are the data structures with brief descriptions:
[detail level 123]
  Arc | Arc namespace contains all core ARC classes |
   Config | Configuration element - represents (sub)tree of ARC XML configuration |
| BaseConfig | Configuration for client interface |
| ArcLocation | Determines ARC installation location |
| RegularExpression | A regular expression class |
| ArcVersion | Determines ARC HED libraries version at runtime |
| Base64 | Base64 encoding and decoding |
| CheckSum | Interface for checksum manipulations |
| CRC32Sum | Implementation of CRC32 checksum |
| MD5Sum | Implementation of MD5 checksum |
| Adler32Sum | Implementation of Adler32 checksum |
| CheckSumAny | Wrapper for CheckSum class |
| Counter | A class defining a common interface for counters |
| CounterTicket | A class for "tickets" that correspond to counter reservations |
| ExpirationReminder | A class intended for internal use within counters |
| Period | A Period represents a length of time |
| Time | A class for storing and manipulating times |
| Database | Interface for calling database client library |
| Query | Class representing a database query |
| FileAccess | Defines interface for accessing filesystems |
 header_t | Internal struct used for communication between processes |
| FileAccessContainer | Container for shared FileAccess objects |
| FileLock | A general file locking class |
| IniConfig | Class representing "ini-style" configuration |
| IntraProcessCounter | A class for counters used by threads within a single process |
| IString | Class used for localised output of log messages |
| LoggerFormat | Struct to contain LogFormat, to use with operator<<(std::ostream&, const LoggerFormat&) |
| LogMessage | A class for log messages |
| LogDestination | A base class for log destinations |
| LogStream | A class for logging to ostreams |
| LogFile | A class for logging to files |
| Logger | A logger class |
| MySQLDatabase | Implements a MySQL version of the Database interface |
| MySQLQuery | Implements a MySQL version of the Query database query class |
| OptionParser | Command line option parser used by ARC command line tools |
| Profile | Class used to convert human-friendly ini-style configuration to XML |
| Run | This class runs an external executable |
| ThreadDataItem | Base class for per-thread object |
| SimpleCondition | Simple triggered condition |
| SimpleCounter | Thread-safe counter with capability to wait for zero value |
| TimedMutex | Mutex which allows a timeout on locking |
| SharedMutex | Mutex which allows shared and exclusive locking |
| ThreadedPointer | Wrapper for pointer with automatic destruction and multiple references |
| ThreadRegistry | A set of conditions, mutexes, etc. conveniently exposed to monitor running child threads and to wait till they exit |
| ThreadInitializer | This class initializes the glibmm thread system |
| URL | Class to represent general URLs |
| URLLocation | Class to hold a resolved URL location |
| PathIterator | Class to iterate through elements of a path |
| User | Platform independent representation of system user |
| UserSwitch | Class for temporary switching of user id |
| ConfigEndpoint | Represents the endpoint of service with a given type and GLUE2 InterfaceName |
| initializeCredentialsType | Defines how user credentials are looked for |
| UserConfig | User configuration class |
| CertEnvLocker | Class for handling X509* variables in a multi-threaded environment |
| EnvLockWrapper | Class to provide automatic locking/unlocking of environment on creation/destruction |
| InterruptGuard | Marks off a section of code which should not be interrupted by signals |
| AutoPointer | Wrapper for pointer with automatic destruction |
| CountedPointer | Wrapper for pointer with automatic destruction and multiple references |
| WatchdogListener | This class is meant to provide interface for Watchdog executor part |
| WatchdogChannel | This class is meant to be used in code which provides "I'm alive" ticks to watchdog |
| NS | Class to represent an XML namespace |
| XMLNode | Wrapper for LibXML library Tree interface |
| XMLNodeContainer | Container for multiple XMLNode elements |
| ARCProxyUtil | |
| CredentialError | An exception class for the Credential class |
| Credential | Class for handling X509 credentials |
| VOMSACInfo | Represents VOMS attribute part of a credential |
| VOMSTrustList | Stores definitions for making decision if VOMS server is trusted |
| DataBuffer | Represents set of buffers |
| DataCallback | Callbacks to be used when there is not enough space on the local filesystem |
| DataHandle | This class is a wrapper around the DataPoint class |
| DataMover | DataMover provides an interface to transfer data between two DataPoints |
| DataPoint | A DataPoint represents a data resource and is an abstraction of a URL |
| DataPointDirect | DataPointDirect represents "physical" data objects |
| DataPointIndex | DataPointIndex represents "index" data objects, e.g. catalogs |
| DataSpeed | Keeps track of average and instantaneous transfer speed |
| DataStatus | Status code returned by many DataPoint methods |
| CacheParameters | Contains data on the parameters of a cache |
| FileCache | FileCache provides an interface to all cache operations |
| FileCacheHash | FileCacheHash provides methods to make hashes from strings |
| FileInfo | FileInfo stores information about files (metadata) |
| URLMap | URLMap allows mapping certain patterns of URLs to other URLs |
| Broker | A Broker filters and ranks acceptable targets for job submission |
| ExecutionTargetSorter | Wrapper around Broker functionality |
| BrokerPluginArgument | Internal class representing arguments passed to BrokerPlugin |
| BrokerPlugin | Base class for BrokerPlugins implementing different brokering algorithms |
| BrokerPluginLoader | Handles loading of the required BrokerPlugin plugin |
| ComputingServiceUniq | |
| ComputingServiceRetriever | Retrieves information about computing elements by querying service registries and CE information systems |
| EndpointStatusMap | Status map for Endpoint objects |
| Endpoint | Represents an endpoint of a service with a given interface type and capabilities |
| EndpointQueryingStatus | Represents the status in the EntityRetriever of the query process of an Endpoint (service registry, computing element) |
| EntityConsumer | A general concept of an object which can consume entities use by the retrievers to return results |
| EntityContainer | An entity consumer class storing all the consumed entities in a list |
| EntityRetriever | Queries Endpoint objects (using plugins in parallel) and sends the found entities to consumers |
| Common | |
| Result | |
| ThreadArg | |
| EndpointQueryOptions | Options controlling the query process |
| EndpointQueryOptions< Endpoint > | The EntityRetriever<Endpoint> (a.k.a. ServiceEndpointRetriever) needs different options |
| EntityRetrieverPlugin | |
| EntityRetrieverPluginLoader | |
| ServiceEndpointRetrieverPlugin | |
| TargetInformationRetrieverPlugin | |
| JobListRetrieverPlugin | |
| ApplicationEnvironment | ApplicationEnvironment |
| LocationAttributes | |
| AdminDomainAttributes | |
| ExecutionEnvironmentAttributes | |
| ComputingManagerAttributes | |
| ComputingShareAttributes | |
| ComputingEndpointAttributes | |
| ComputingServiceAttributes | |
| LocationType | |
| AdminDomainType | |
| ExecutionEnvironmentType | |
| ComputingManagerType | |
| ComputingShareType | |
| ComputingEndpointType | |
| ComputingServiceType | |
| ExecutionTarget | ExecutionTarget |
| GLUE2 | GLUE2 parser |
| GLUE2Entity | |
| Job | Job |
| JobControllerPlugin | |
| JobControllerPluginLoader | |
| JobControllerPluginArgument | |
| OptIn | |
| Range | |
| ScalableTime | |
| ScalableTime< int > | |
| JobIdentificationType | Job identification |
| ExecutableType | Executable |
| RemoteLoggingType | Remote logging |
| NotificationType | |
| ApplicationType | |
| SlotRequirementType | |
| DiskSpaceRequirementType | |
| ParallelEnvironmentType | |
| ResourcesType | |
| SourceType | |
| TargetType | Represent an output file destination |
| InputFileType | |
| OutputFileType | An output file |
| DataStagingType | Simple structure for in- and output files |
| JobDescriptionResult | |
| JobDescription | |
| JobDescriptionParserPluginResult | |
| JobDescriptionParserPlugin | Abstract class for the different parsers |
| JobDescriptionParserPluginLoader | |
| iterator | |
| JobInformationStorage | Abstract class for storing job information |
| JobInformationStorageXML | |
| JobState | |
| JobSupervisor | JobSupervisor class |
| Software | Used to represent software (names and version) and comparison |
| SoftwareRequirement | Class used to express and resolve version requirements on software |
| SubmissionStatus | |
| EndpointSubmissionStatus | |
| Submitter | Class for submitting jobs |
| SubmitterPlugin | Base class for the SubmitterPlugins |
| SubmitterPluginLoader | |
| SubmitterPluginArgument | |
| BrokerPluginTestACCControl | |
| JobDescriptionParserPluginTestACCControl | |
| JobControllerPluginTestACCControl | |
| SubmitterPluginTestACCControl | |
| JobStateTEST | |
| JobListRetrieverPluginTESTControl | |
| ServiceEndpointRetrieverPluginTESTControl | |
| TargetInformationRetrieverPluginTESTControl | |
| ArcCredential | Internal code for low-level credential handling |
| cert_verify_context | Struct representing a certificate verification context |
| AuthN | Code for handling Network Security Services (NSS) credentials |
| certInfo | NSS certificate information |
 DataStaging | DataStaging contains all components for data transfer scheduling and execution |
 DataDelivery | DataDelivery transfers data between specified physical locations |
| DataDeliveryComm | This class provides an abstract interface for the Delivery layer |
| Status | Plain C struct to pass information from executing process back to main thread |
| DataDeliveryCommHandler | Singleton class handling all active DataDeliveryComm objects |
| DataDeliveryLocalComm | This class starts, monitors and controls a local Delivery process |
| DataDeliveryRemoteComm | This class contacts a remote service to make a Delivery request |
| TransferParameters | Represents limits and properties of a DTR transfer. These generally apply to all DTRs |
| DTRCacheParameters | The configured cache directories |
| DTRCallback | The base class from which all callback-enabled classes should be derived |
| DTR | Data Transfer Request |
| DTRList | Global list of all active DTRs in the system |
| DTRStatus | Class representing the status of a DTR |
| DTRErrorStatus | A class to represent error states reported by various components |
| Processor | The Processor performs pre- and post-transfer operations |
| Scheduler | The Scheduler is the control centre of the data staging framework |
| TransferSharesConf | TransferSharesConf describes the configuration of TransferShares |
| TransferShares | TransferShares is used to implement fair-sharing and priorities |
