Module_BufferManager

Module: BufferManager

Status summary

Component	Section	32-bit	64-bit	Claimant	Source	Repo summary
BufferManager	ROM modules	Internals	Internals	Gerph		32-bit built, 64-bit built, tested in repo

Development status

Completeness

SWIs	Services	Vectors	Others	Uses Services	Uses Vectors	Uses Events	Uses UpCalls	TOTAL
95.00%	0.00%	50.00%	80.00%	100.00%	100.00%	100.00%	100.00%	82.86%

Summary

BufferManager owns shared character buffers used by DeviceFS-backed drivers. It links devices to buffers, schedules filling/emptying, and drives the BufferFilling/BufferEmptying upcall path used by serial and parallel-style devices.

Documentation

URL: PRM

Relationships

Discovered features

• Has services
• Has services fast
• Has swis
• Uses dynamic area
• Uses heap dynamic area
• Uses messagetrans

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Provides

Functionality

In 32bit	In 64 bit	Interface

None found

Commands

None

SWIs

In 32bit	In 64 bit	Interface
✅	✅	Buffer_Create (&42940)
✅	✅	Buffer_Remove (&42941)
✅	✅	Buffer_Register (&42942)
✅	✅	Buffer_Deregister (&42943)
✅	✅	Buffer_ModifyFlags (&42944)
✅	✅	Buffer_LinkDevice (&42945)
✅	✅	Buffer_UnlinkDevice (&42946)
✅	✅	Buffer_GetInfo (&42947)
✅	✅	Buffer_Threshold (&42948)
✅	🔲	Buffer_InternalInfo (&42949)

Services

In 32bit	In 64 bit	Interface
🔲	🔲	Service_Reset

Vectors

In 32bit	In 64 bit	Interface
✅	🔲	CNPV
✅	🔲	INSV
✅	🔲	REMV

Events

None

UpCalls

None

Others

In 32bit	In 64 bit	Interface
🔲	🔲	Call device for wakeup
🔲	🔲	Call device for owner change
✅	✅	System buffer SerialIn (1)
✅	✅	System buffer SerialOut (2)
✅	✅	System buffer Keyboard (0)
✅	✅	Fast dispatch InsertByte (0)
✅	✅	Fast dispatch InsertBlock (1)
✅	✅	Fast dispatch RemoveByte (2)
✅	✅	Fast dispatch RemoveBlock (3)
✅	✅	Fast dispatch ExamineByte (4)
✅	✅	Fast dispatch ExamineBlock (5)
✅	✅	Fast dispatch UsedSpace (6)
✅	✅	Fast dispatch FreeSpace (7)
✅	✅	Fast dispatch PurgeBuffer (8)
🔲	🔲	Fast dispatch NextBlock (9)

---

Issues calls to

Services

In 32bit	In 64 bit	Interface
✅	✅	Service_BufferStarting

Vectors

In 32bit	In 64 bit	Interface
✅	✅	UpCallV

Events

In 32bit	In 64 bit	Interface
✅	✅	Event_InputFull
✅	✅	Event_OutputEmpty

UpCalls

In 32bit	In 64 bit	Interface
✅	✅	UpCall_BufferEmptying
✅	✅	UpCall_BufferFilling

Modules

• MessageTrans