ACE_Obstack_T< ACE_CHAR_T > Class Template Reference

Define a simple "mark and release" memory allocation utility. More...

#include <Obstack_T.h>

Collaboration diagram for ACE_Obstack_T< ACE_CHAR_T >:

Public Member Functions
	ACE_Obstack_T (size_t size=(4096 *sizeof(ACE_CHAR_T))-sizeof(ACE_Obchunk), ACE_Allocator *allocator_strategy=0)
	~ACE_Obstack_T (void)
int	request (size_t len)
ACE_CHAR_T *	grow (ACE_CHAR_T c)
void	grow_fast (ACE_CHAR_T c)
ACE_CHAR_T *	freeze (void)
ACE_CHAR_T *	copy (const ACE_CHAR_T *data, size_t len)
size_t	size (void) const
	Return the maximum size. More...
void	unwind (void *obj)
void	release (void)
void	dump (void) const
	Dump the state of an object. More...

Public Attributes
	ACE_ALLOC_HOOK_DECLARE
	Declare the dynamic allocation hooks. More...

Protected Member Functions
class ACE_Obchunk *	new_chunk (void)
void	unwind_i (void *obj)

Protected Attributes
ACE_Allocator *	allocator_strategy_
	Pointer to the allocator used by this Obstack. More...
size_t	size_
	Current size of the Obstack;. More...
class ACE_Obchunk *	head_
	Head of the Obchunk chain. More...
class ACE_Obchunk *	curr_
	Pointer to the current Obchunk. More...

Detailed Description

template<class ACE_CHAR_T>
class ACE_Obstack_T< ACE_CHAR_T >

Define a simple "mark and release" memory allocation utility.

The implementation is similar to the GNU obstack utility, which is used extensively in the GCC compiler.

Constructor & Destructor Documentation

template<class ACE_CHAR_T >

ACE_Obstack_T< ACE_CHAR_T >::ACE_Obstack_T	(	size_t	size = (4096 * sizeof (ACE_CHAR_T)) - sizeof (ACE_Obchunk),
		ACE_Allocator *	allocator_strategy = 0
	)

template<class ACE_CHAR_T >

ACE_Obstack_T< ACE_CHAR_T >::~ACE_Obstack_T

(

void

)

Member Function Documentation

template<class ACE_CHAR_T>

ACE_CHAR_T * ACE_Obstack_T< ACE_CHAR_T >::copy	(	const ACE_CHAR_T *	data,
		size_t	len
	)

Copy the data into the current Obchunk and freeze the current block. Return the starting address of the current building block, 0 if error occurs. len specify the string length, not the actually data size.

template<class ACE_CHAR_T >

void ACE_Obstack_T< ACE_CHAR_T >::dump

(

void

)

const

Dump the state of an object.

template<class ACE_CHAR_T >

ACE_CHAR_T * ACE_Obstack_T< ACE_CHAR_T >::freeze

(

void

)

Freeze the current building block by null terminating it. Return the starting address of the current building block, 0 if error occurs.

template<class ACE_CHAR_T>

ACE_CHAR_T * ACE_Obstack_T< ACE_CHAR_T >::grow

(

ACE_CHAR_T

c

)

Inserting a new ACE_CHAR_T c into the current building block without freezing (null terminating) the block. This function will create new chunk by checking the boundary of current Obchunk. Return the location c gets inserted to, or 0 if error.

template<class ACE_CHAR_T>

void ACE_Obstack_T< ACE_CHAR_T >::grow_fast

(

ACE_CHAR_T

c

)

Inserting a new ACE_CHAR_T c into the current building block without freezing (null terminating) the block and without checking for out-of-bound error.

template<class ACE_CHAR_T >

ACE_Obchunk * ACE_Obstack_T< ACE_CHAR_T >::new_chunk ( void  )

protected

template<class ACE_CHAR_T >

void ACE_Obstack_T< ACE_CHAR_T >::release

(

void

)

"Release" the entire stack of Obchunks, putting it back on the free list.

template<class ACE_CHAR_T >

int ACE_Obstack_T< ACE_CHAR_T >::request

(

size_t

len

)

Request Obstack to prepare a block at least len long for building a new string. Return -1 if fail, 0 if success.

template<class ACE_CHAR_T >

size_t ACE_Obstack_T< ACE_CHAR_T >::size ( void  ) const

inline

Return the maximum size.

template<class ACE_CHAR_T >

void ACE_Obstack_T< ACE_CHAR_T >::unwind

(

void *

obj

)

"Unwind" the stack. If obj is a null pointer, everything allocated in the stack is released. Otherwise, obj must be an address of an object allocated in the stack. In this case, obj is released along with everthing allocated in the Obstack since obj.

template<class ACE_CHAR_T >

void ACE_Obstack_T< ACE_CHAR_T >::unwind_i ( void *  obj )

protected

Search through the list of Obchunks and release them. Helper funtion used by unwind.

Member Data Documentation

template<class ACE_CHAR_T>

ACE_Obstack_T< ACE_CHAR_T >::ACE_ALLOC_HOOK_DECLARE

Declare the dynamic allocation hooks.

template<class ACE_CHAR_T>

ACE_Allocator* ACE_Obstack_T< ACE_CHAR_T >::allocator_strategy_

protected

Pointer to the allocator used by this Obstack.

template<class ACE_CHAR_T>

class ACE_Obchunk* ACE_Obstack_T< ACE_CHAR_T >::curr_

protected

Pointer to the current Obchunk.

template<class ACE_CHAR_T>

class ACE_Obchunk* ACE_Obstack_T< ACE_CHAR_T >::head_

protected

Head of the Obchunk chain.

template<class ACE_CHAR_T>

size_t ACE_Obstack_T< ACE_CHAR_T >::size_

protected

Current size of the Obstack;.

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

• Obstack_T.h
• Obstack_T.cpp
• Obstack_T.inl