Inside Macintosh: Memory

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Contents

• About Memory
• Organization of Memory by the Operating System
• The System Heap
• The System Global Variables
• Organization of Memory in an Application Partition
• The Application Stack
• The Application Heap
• The Application Global Variables and A5 World
• Temporary Memory
• Virtual Memory
• Addressing Modes
• Heap Management
• Relocatable and Nonrelocatable Blocks
• Properties of Relocatable Blocks
• Locking and Unlocking Relocatable Blocks
• Purging and Reallocating Relocatable Blocks
• Memory Reservation
• Heap Purging and Compaction
• Heap Fragmentation
• Deallocating Nonrelocatable Blocks
• Reserving Memory
• Locking Relocatable Blocks
• Allocating Nonrelocatable Blocks
• Summary of Preventing Fragmentation
• Dangling Pointers
• Compiler Dereferencing
• Loading Code Segments
• Callback Routines
• Invalid Handles
• Disposed Handles
• Empty Handles
• Fake Handles
• Low-Memory Conditions
• Memory Cushions
• Memory Reserves
• Grow-Zone Functions
• Using Memory
• Setting Up the Application Heap
• Changing the Size of the Stack
• Expanding the Heap
• Allocating Master Pointer Blocks
• Determining the Amount of Free Memory
• Allocating Blocks of Memory
• Maintaining a Memory Reserve
• Defining a Grow-Zone Function
• Memory Management Reference
• Memory Management Routines
• Setting Up the Application Heap
• MaxApplZone
• MoreMasters
• GetApplLimit
• SetApplLimit
• Allocating and Releasing Relocatable Blocks of Memory
• NewHandle
• NewHandleClear
• DisposeHandle
• Allocating and Releasing Nonrelocatable Blocks of Memory
• NewPtr
• NewPtrClear
• DisposePtr
• Setting the Properties of Relocatable Blocks
• HGetState
• HSetState
• HLock
• HUnlock
• HPurge
• HNoPurge
• Managing Relocatable Blocks
• EmptyHandle
• ReallocateHandle
• ReserveMem
• MoveHHi
• HLockHi
• Manipulating Blocks of Memory
• BlockMove
• Assessing Memory Conditions
• PurgeSpace
• MemError
• Grow-Zone Operations
• SetGrowZone
• GZSaveHnd
• Setting and Restoring the A5 Register
• SetCurrentA5
• SetA5
• Application-Defined Routines
• Grow-Zone Functions
• MyGrowZone

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