ustl::memblock Class Reference
[Memory Management]

Allocated memory block. More...

#include <ustl.h>

Inheritance diagram for ustl::memblock:

List of all members.

Public Member Functions
	memblock (void)
	Allocates 0 bytes for the internal block.
	memblock (const void *p, size_type n)
	links to p, n. Data can not be modified and will not be freed.
	memblock (size_type n)
	Allocates n bytes for the internal block.
	memblock (const cmemlink &b)
	Links to what b is linked to.
	memblock (const memlink &b)
	Links to what b is linked to.
	memblock (const memblock &b)
	Links to what b is linked to.
virtual	~memblock (void)
virtual void	unlink (void)
	Unlinks object.
void	assign (const cmemlink &l)
const memblock &	operator= (const cmemlink &l)
const memblock &	operator= (const memlink &l)
const memblock &	operator= (const memblock &l)
void	assign (const void *p, size_type n)
	Copies data from p, n.
void	swap (memblock &l)
	Swaps the contents with l.
void	reserve (size_type newSize, bool bExact=true)
	Reallocates internal block to hold at least newSize bytes.
void	resize (size_type newSize, bool bExact=true)
	resizes the block to newSize bytes, reallocating if necessary.
iterator	insert (iterator start, size_type size)
	Shifts the data in the linked block from start to start + n.
iterator	erase (iterator start, size_type size)
	Shifts the data in the linked block from start + n to start.
void	clear (void)
size_type	capacity (void) const
bool	is_linked (void) const
size_type	max_size (void) const
void	manage (memlink &l)
void	deallocate (void) throw ()
	Frees internal data.
void	manage (void *p, size_type n)
void	copy_link (void)
	"Instantiate" a linked block by allocating and copying the linked data.
void	read (istream &is)
	Reads the object from stream s.
void	read_file (const char *filename)
	Reads the entire file "filename".
Static Public Attributes
static const size_type	c_PageSize = 64
	The default minimum allocation unit.
Protected Member Functions
virtual size_type	minimumFreeCapacity (void) const

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Detailed Description

Allocated memory block.

Adds memory management capabilities to memlink. Uses malloc and realloc to maintain the internal pointer, but only if allocated using members of this class, or if linked to using the Manage() member function. Managed memory is automatically freed in the destructor.

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Constructor & Destructor Documentation

ustl::memblock::~memblock

(

void

)

[virtual]

Frees internal data, if appropriate Only if the block was allocated using resize, or linked to using Manage, will it be freed. Also, Derived classes should call DestructBlock from their destructor, because upstream virtual functions are unavailable at this point and will not be called automatically.

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Member Function Documentation

void ustl::memblock::reserve	(	size_type	newSize,
		bool	bExact = true
	)

Reallocates internal block to hold at least newSize bytes.

Additional memory may be allocated, but for efficiency it is a very good idea to call reserve before doing byte-by-byte edit operations. The block size as returned by size() is not altered. reserve will not reduce allocated memory. If you think you are wasting space, call deallocate and start over. To avoid wasting space, use the block for only one purpose, and try to get that purpose to use similar amounts of memory on each iteration.

void ustl::memblock::manage	(	void *	p,
		size_type	n
	)

Assumes control of the memory block p of size n. The block assigned using this function will be freed in the destructor.

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

• memblock.h
• memblock.cc

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