Region Class Reference

Region manager. More...

#include <region.h>

List of all members.

Static Public Member Functions
static void	init (Address begin, Address end)
	Initialize the region manager.
static Address	reserve_pages (size_t size, unsigned long alignment)
	Reserve an address region.
static void	return_pages (Address address, size_t size)
	Free an address region.
static void	debug_dump ()
	Dump an overview of current allocations to the screen.

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Detailed Description

Region manager.

The region manager is a module that keeps track of virtual-memory allocations in a predefined virtual-address region. It only allocates virtual addresses -- not physical memory. In other words, virtual-memory regions allocated using this module are not backed by physical memory; mapping in physical memory is the client's responsibility.

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Member Function Documentation

void Region::debug_dump (   )  [static]

Dump an overview of current allocations to the screen.

void Region::init (  Address  begin, Address  end )  [static]

Initialize the region manager. This function is called once at initialization. Parameters: begin  begin of the virtual-memory region end  end of the virtual-memory region

Address Region::reserve_pages (  size_t  size, unsigned long  alignment )  [static]

Reserve an address region. This function only reserves the region -- it does not back it with physical memory. Parameters: size  size of the requested region, in bytes. alignment  size-alignment of the requested region, in bytes. Returns: virtual address of the allocated virtual-memory region, or 0 if an error occurred.

void Region::return_pages (  Address  address, size_t  size )  [static]

Free an address region. This function only frees a reservation --- it does not flush the region itself. Parameters: address  virtual address of the allocated virtual memory region. size  size of the allocated region, in bytes.

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The documentation for this class was generated from the following files:

• region.h
• region.cc

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