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Trash Stacks

Trash Stacks — maintain a stack of unused allocated memory chunks

Types and Values

struct GTrashStack

Includes

#include <glib.h>

Description

A GTrashStack is an efficient way to keep a stack of unused allocated memory chunks. Each memory chunk is required to be large enough to hold a gpointer. This allows the stack to be maintained without any space overhead, since the stack pointers can be stored inside the memory chunks.

There is no function to create a GTrashStack. A NULL GTrashStack* is a perfectly valid empty stack.

There is no longer any good reason to use GTrashStack. If you have extra pieces of memory, free() them and allocate them again later.

Functions

g_trash_stack_push ()

void
g_trash_stack_push (GTrashStack **stack_p,
                    gpointer data_p);

g_trash_stack_push has been deprecated since version 2.48 and should not be used in newly-written code.

GTrashStack is deprecated without replacement

Pushes a piece of memory onto a GTrashStack.

Parameters

stack_p

a GTrashStack

 

data_p

the piece of memory to push on the stack.

[not nullable]

g_trash_stack_pop ()

gpointer
g_trash_stack_pop (GTrashStack **stack_p);

g_trash_stack_pop has been deprecated since version 2.48 and should not be used in newly-written code.

GTrashStack is deprecated without replacement

Pops a piece of memory off a GTrashStack.

Parameters

stack_p

a GTrashStack

 

Returns

the element at the top of the stack


g_trash_stack_peek ()

gpointer
g_trash_stack_peek (GTrashStack **stack_p);

g_trash_stack_peek has been deprecated since version 2.48 and should not be used in newly-written code.

GTrashStack is deprecated without replacement

Returns the element at the top of a GTrashStack which may be NULL.

Parameters

stack_p

a GTrashStack

 

Returns

the element at the top of the stack


g_trash_stack_height ()

guint
g_trash_stack_height (GTrashStack **stack_p);

g_trash_stack_height has been deprecated since version 2.48 and should not be used in newly-written code.

GTrashStack is deprecated without replacement

Returns the height of a GTrashStack.

Note that execution of this function is of O(N) complexity where N denotes the number of items on the stack.

Parameters

stack_p

a GTrashStack

 

Returns

the height of the stack

Types and Values

struct GTrashStack

struct GTrashStack {
  GTrashStack *next;
};

GTrashStack has been deprecated since version 2.48 and should not be used in newly-written code.

GTrashStack is deprecated without replacement

Each piece of memory that is pushed onto the stack is cast to a GTrashStack*.

Members

GTrashStack *next;

pointer to the previous element of the stack, gets stored in the first sizeof (gpointer) bytes of the element

 
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