Notes on actors in the Squeak image

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Tony Garnock-Jones 2022-05-26 13:35:59 +02:00
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# Actors in the Smalltalk image
## Dataspaces
- SystemDataspace
- LinuxInputDataspace
- TelephonyDataspace
- WidgetDataspace
## AppRegistryDaemon
- monitors for interest in open commands in SystemDataspace
- adds a menu item that, when clicked, issues an open command in same
- ACTION: should use the shared dataspace instead
## CallManager
- adds "open dialer" to app menu
- ACTION: move to shared dataspace
- monitors telephony dataspace for:
- active call -> opens call control UI, asserts "call in progress"
- modem present -> adds to set, removes from set when retracted
- (re)selects a modem from set of modems whenever no selection exists or current selection not in set
- unused `hangupAll`, interacts with telephony dataspace
- BUG: HayesModemCallState needs to respond to <disconnect-call all _>
- unused `dial:`, interacts with telephony dataspace
## MachineLock
- SystemDataspace. Assigns locks FIFO to entity carried in <acquire-lock lockid $entity>
- ACTION: make this machine-wide/shared!!
- clients:
- HayesModemActor: <system-device "/dev/...">
- MockModemActor: <mock-system-device "/dev/...">
- SamsungGalaxyS7ModemActor: <system-device "/dev/...">
## WidgetDaemon
- WidgetDataspace. Observers of <window id $w> trigger a new window, with its own dataspace `w`
- WidgetWindow is a complex beastie
## SoundEffectsDaemon
- SystemDataspace. Plays sounds in response to continuous-sound and alert-sound assertions.
## AudioProfileDaemon
- tracks LinuxInputDataspace headset/mic jack events
- reflects them as presence assertions in LinuxInputDataspace
- ACTION: move these assertions elsewhere
- tracks LinuxIOAudioSinkMapping entries to map abstract devices to concrete mixer output names
- tracks
- TelephonyDataspace: ringing, call active, speakerphone active
- SystemDataspace: alert playing
- LinuxInputDataspace: headset speaker present
- uses these to determine which subset of {speaker, headset, earpiece} should be enabled
- uses amixer to turn these on/off in response
- ACTION: switch to alsaucm and amixer, or be more sophisticated about specifying profiles
## RingToneDaemon
- monitors TelephonyDataspace for ring, sms, internal-ring conditions and asserts sound effects in response
## BacklightControlDaemon
- adds brightness control app to menu
- BrightnessUI does a bunch of sophisticated stuff that might be better done outside the UI?
- SystemDataspace <blank-screen> --> blanks all framebuffer devices
- TelephonyDataspace <call-in-progress> --> when speakerphone NOT in use, tracks proximity
- if proximity (in LinuxInputDataspace) is above a threshold, asserts <disable-touchscreen> and <blank-screen>
## PowerStatusDaemon
- adds power report app to menu
- PowerReportUI
## MachineConfiguration
- selects a MachineVariant and instantiates it during image configuredness
## PinePhoneProximitySensorDaemon
- LinuxInputDataspace during observation of proximity-above-threshold, tracks proximity
- polls the device file every 0.1s
## HardwareButtonsDaemon
- currently just logs switch state changes
## TiledMapDemoApp
- adds an entry to the apps menu
- otherwise traditional morphic
## PowerButtonListener
- LinuxInputDataspace <primary-device-event-type $name KEY> --> listens to it
- if it's a POWER button, toggles screen blanking and touchscreen disabling
## SmsStore '/home/tonyg/src/squeak-phone/sms-store'
- TelephonyDataspace sms-delivery and sms-transmission cause new entries in the filesystem-based database
- adds "open composer" app menu item
- SmsComposerUI
## MockModem 'mock1'
- as mock:
- TelephonyDataspace
- assert LinuxIOHayesModemPresent
- on <place-call ...> create a MockModemCall actor
- on <simulate-incoming-call ...> do the same
- on <sms-transmission ...> explore the record and acknowledge the continuation
- HayesModemActor:
- internal interactions on its own per-modem dataspace
- messes around with its parent/child linked-actor relationship to have a chance to tear down the modem on shutdown
- TelephonyDataspace
- assert LinuxIOHayesModemPresent
- on <place-call ...>, sends ATD
- spawns supporting actors:
- HayesModemCallDriver
- on unsolicited DSCI events, creates or updates a HayesModemCallState
- which interacts via TelephonyDataspace
- responds to answer-call, disconnect-call
- publishes LinuxIOTelephonyActiveCall
- HayesModemSmsDriver
- TelephonyDataspace sms-transmission -> sends it
- private modem dataspace unsolicited CMTI -> downloads waiting messages
- SamsungGalaxyS7ModemActor:
- out of date wrt state of the art, I've been using the PinePhone for dev
# Configuration of the system
All `MachineVariant`s:
- specify whether or not to debug exceptions in actors
- start:
- AppRegistryDaemon
- WidgetDaemon
- CallManager
- SoundEffectsDaemon
- AudioProfileDaemon
- RingToneDaemon
- BacklightControlDaemon
- HardwareButtonsDaemon
- PowerStatusDaemon
- TiledMapDemoApp
- PowerButtonListener
- stops LinuxInputDaemon, LinuxInputIndex
- uninstalls PhoneWorldMorph
- enables syntax highlighting
- starts an SmsStore in tonyg's home directory
- starts either a mock or hayes modem, depending on class configuration
- configures RingToneDaemon with sounds in tonyg's home directory
- starts LinuxInputDaemon, LinuxInputIndex
- installs PhoneWorldMorph
- restores an audio profile (if there is a sensible one to choose) using `alsactl restore -f -`
- disables syntax highlighting
- starts an SmsStore in user's home directory
- subclasses
- MachinePinePhone:
- sets DPI to 270 "We don't seem to be able to discover the correct setting from the hardware yet"
- starts a hayes modem on '/dev/EG25.AT'
- starts PinePhoneProximitySensorDaemon
- configures RingToneDaemon with sounds in user's home directory
- asserts `LinuxIOAudioSinkMapping`s
speaker -> Line Out
headset -> Headphone
earpiece -> Earpiece
- MachineQemuAmd64:
- starts a mock modem on 'mock1'
- configures RingToneDaemon with sounds in user's home directory
- MachineSamsungGalaxyS7:
- supervises SamsungGalaxyS7ModemActor