Transcript LBTO Common Software Presentation

LBTO Common Software
August 15, 2006
Chris Biddick
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Introduction
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Common software elements:
• CommandReturn
• CommandSequencer
• Core
• DataDictionary (*)
• EventHandler (*)
• NetworkConfig
• ReflectiveMemory (*)
• RPC
• SetValue (*)
• TelemetryClient
Reference document: 481s501
(*) data dictionary
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CommandReturn
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Standard return object for client
commands
• Indicates success or failure
• May contain
• Strings
• Other CommandReturn objects
• Event descriptions
• Serialized object (XML) is returned
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CommandSequencer
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Commands from client to subsystem
Layer above lower level RPC
Supports
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Subsystem reference 481s008
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• Status of command
• Block on command
• Results of command
Core
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ArgumentList
• Used to pass arguments from client to
subsystem
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BitArray
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Configuration
• Supports arrays of packed bits and bit fields
• Reads parameters from LBT.conf
Core (cont)
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Conversions
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LoadMonitor
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Shm
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Socket
• Provides unit conversions
• Used when starting subsystems
• Supports access to shared memory segments
• Socket support
Core (cont)
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Signal
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Synchronization (IMutex, MsgQueue,
PMutex, Semaphore)
• Simple signal handling
• Provides mutexes, semaphores and condition
synchronization
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SysLog
• syslog support
Core (cont)
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System
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SystemClock
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Thread
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XML support
• Gets IP addresses and PIDs
• Get time, MJD, calendar time; do delays
• Support for POSIX threads in TCS context
• Xerces based XML parsing
DataDictionary
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Supports reflective memory and events
• Writing (ddsconfig) and reading binary
definition files
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EventHandler
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Event class
Logs events to local flat file
Interfaces with the LSS
NetworkConfig
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Handles starting/stopping TCS networks
and subsystems
• netconfig
• networkserver
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ReflectiveMemory
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Reflective memory network support
• gshmconfig
• gshmserver
RPC
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Underlying layer for all TCS
communications
• rpcconfig
• rpcserver
• RPC class
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SetValue
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Reads and writes from/to reflective
memory
• Gtype class
• SetValueInterface class
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Provides reflective memory write
protection
• Only owning subsystem may write its memory
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Metadata retrieval
TelemetryClient
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Hook for subsystems to interface to the
TEL subsystem
• startStream
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