GRASS GIS 8 Programmer's Manual: struct_alloc.c File Reference

GRASS GIS 8 Programmer's Manual 8.5.0dev(2024)-d6dec75dd4

Vector library - allocate and zero array space (lower level functions) More...

#include <stdlib.h>
#include <grass/vector.h>
#include <grass/glocale.h>

Include dependency graph for struct_alloc.c:

Go to the source code of this file.

Functions
struct P_node *	dig_alloc_node (void)
	Allocate new node structure. More...

void	dig_free_node (struct P_node *Node)
	Free node structure. More...

int	dig_node_alloc_line (struct P_node *node, int add)
	Allocate space in P_node struct. More...

int	dig_alloc_nodes (struct Plus_head *Plus, int add)
	Reallocate array of pointers to nodes. More...

struct P_line *	dig_alloc_line (void)
	Allocate new line structure. More...

void *	dig_alloc_topo (char type)
	Allocate new topo struct. More...

void	dig_free_line (struct P_line *Line)
	Free line structure. More...

int	dig_alloc_lines (struct Plus_head *Plus, int add)
	Reallocate array of pointers to lines. More...

int	dig_alloc_areas (struct Plus_head *Plus, int add)
	Reallocate array of pointers to areas. More...

int	dig_alloc_isles (struct Plus_head *Plus, int add)
	Reallocate array of pointers to isles. More...

struct P_area *	dig_alloc_area (void)
	Allocate new area structure. More...

void	dig_free_area (struct P_area *Area)
	Free area structure. More...

struct P_isle *	dig_alloc_isle (void)
	Allocate new isle structure. More...

void	dig_free_isle (struct P_isle *Isle)
	Free isle structure. More...

int	dig_alloc_points (struct line_pnts *points, int num)
	allocate room for 'num' X and Y arrays in struct line_pnts More...

int	dig_alloc_cats (struct line_cats *cats, int num)
	Allocate room for 'num' fields and category arrays in struct line_cats. More...

int	dig_area_alloc_line (struct P_area *area, int add)
	allocate space in P_area for add new lines More...

int	dig_area_alloc_isle (struct P_area *area, int add)
	Allocate space in P_area for add new isles. More...

int	dig_isle_alloc_line (struct P_isle *isle, int add)
	Allocate space in P_isle for add new lines. More...

int	dig_out_of_memory (void)
	For now just print message and return error code. More...

Detailed Description

Vector library - allocate and zero array space (lower level functions)

Lower level functions for reading/writing/manipulating vectors.

These routines all eventually call calloc() to allocate and zero the new space. BUT It is not necessarily safe to assume that the memory will be zero. The next memory location asked for could have been previously used and not zeroed. (e.g. compress()).

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author: CERL (probably Dave Gerdes); Radim Blazek

Definition in file struct_alloc.c.

Function Documentation

◆ dig_alloc_area()

struct P_area* dig_alloc_area ( void )

Allocate new area structure.

Returns: pointer to allocated P_area struct; NULL on error

Definition at line 266 of file struct_alloc.c.

References G_malloc, G_zero(), and NULL.

Referenced by dig_Rd_P_area().

◆ dig_alloc_areas()

int dig_alloc_areas	(	struct Plus_head *	Plus,
		int	add
	)

Reallocate array of pointers to areas.

Parameters

Plus	pointer to Plus_head structure
add	space for 'add' number of areas is added

Returns: 0 on success; -1 on error

Definition at line 218 of file struct_alloc.c.

Referenced by dig_load_plus().

◆ dig_alloc_cats()

int dig_alloc_cats	(	struct line_cats *	cats,
		int	num
	)

Allocate room for 'num' fields and category arrays in struct line_cats.

Parameters

cats	pointer to line_cats struct
num	number of cats

Returns: 0 on success; returns -1 on out of memory

Definition at line 380 of file struct_alloc.c.

References line_cats::alloc_cats, line_cats::cat, dig__alloc_space(), dig_out_of_memory(), and line_cats::field.

Referenced by Vect_cat_set().

◆ dig_alloc_isle()

struct P_isle* dig_alloc_isle ( void )

Allocate new isle structure.

Returns: pointer to allocated P_isle struct; NULL on error

Definition at line 301 of file struct_alloc.c.

References G_malloc, G_zero(), and NULL.

Referenced by dig_Rd_P_isle().

◆ dig_alloc_isles()

int dig_alloc_isles	(	struct Plus_head *	Plus,
		int	add
	)

Reallocate array of pointers to isles.

Parameters

Plus	pointer to Plus_head structure
add	space for 'add' number of isles is added.

Returns: 0 on success; -1 on error

Definition at line 243 of file struct_alloc.c.

Referenced by dig_load_plus().

◆ dig_alloc_line()

struct P_line* dig_alloc_line ( void )

Allocate new line structure.

Returns: pointer to allocated P_node struct; NULL on error

Definition at line 127 of file struct_alloc.c.

References G_malloc, G_zero(), and NULL.

Referenced by dig_Rd_P_line().

◆ dig_alloc_lines()

int dig_alloc_lines	(	struct Plus_head *	Plus,
		int	add
	)

Reallocate array of pointers to lines.

Parameters

Plus	pointer to Plus_head structure
add	space for 'add' number of lines is added.

Returns: 0 on success; -1 on error

Definition at line 193 of file struct_alloc.c.

Referenced by dig_load_plus(), and Vect__load_map_lines_pg().

◆ dig_alloc_node()

struct P_node* dig_alloc_node ( void )

Allocate new node structure.

Returns: pointer to allocated P_node struct; NULL on error

Definition at line 30 of file struct_alloc.c.

References G_malloc, G_zero(), and NULL.

Referenced by dig_add_node(), and dig_Rd_P_node().

◆ dig_alloc_nodes()

int dig_alloc_nodes	(	struct Plus_head *	Plus,
		int	add
	)

Reallocate array of pointers to nodes.

Parameters

Plus	pointer to Plus_head structure
add	number of nodes to be added

Returns: 0 on success; -1 on error

Definition at line 105 of file struct_alloc.c.

Referenced by dig_add_node(), dig_load_plus(), and Vect__load_map_nodes_pg().

◆ dig_alloc_points()

int dig_alloc_points	(	struct line_pnts *	points,
		int	num
	)

allocate room for 'num' X and Y arrays in struct line_pnts

Parameters

points	pointer to line_pnts struct
num	number of points

Returns: 0 on success; returns -1 on out of memory

Definition at line 336 of file struct_alloc.c.

References line_pnts::alloc_points, dig__alloc_space(), dig_out_of_memory(), line_pnts::x, line_pnts::y, and line_pnts::z.

◆ dig_alloc_topo()

void* dig_alloc_topo ( char type )

Allocate new topo struct.

Parameters

type	to of struct to allocate

Definition at line 145 of file struct_alloc.c.

Referenced by dig_Rd_P_line().

◆ dig_area_alloc_isle()

int dig_area_alloc_isle	(	struct P_area *	area,
		int	add
	)

Allocate space in P_area for add new isles.

Parameters

area	pointer to P_area struct
add	number of isle to be added

Returns: 0 on success; -1 on error

Definition at line 440 of file struct_alloc.c.

Referenced by dig_Rd_P_area().

◆ dig_area_alloc_line()

int dig_area_alloc_line	(	struct P_area *	area,
		int	add
	)

allocate space in P_area for add new lines

Parameters

area	pointer to P_area struct
add	number of lines to be added

Returns: 0 on success; -1 on error

Definition at line 414 of file struct_alloc.c.

Referenced by dig_Rd_P_area().

◆ dig_free_area()

void dig_free_area ( struct P_area * Area )

Free area structure.

Parameters

Area	pointer to P_area struct to be freed

Definition at line 284 of file struct_alloc.c.

References P_area::alloc_isles, P_area::alloc_lines, free(), G_free(), P_area::isles, and P_area::lines.

Referenced by dig_free_plus_areas(), and dig_Rd_P_area().

◆ dig_free_isle()

void dig_free_isle ( struct P_isle * Isle )

Free isle structure.

Parameters

Isle	pointer to P_isle struct to be freed

Definition at line 319 of file struct_alloc.c.

References P_isle::alloc_lines, G_free(), and P_isle::lines.

Referenced by dig_free_plus_isles(), and dig_Rd_P_isle().

◆ dig_free_line()

void dig_free_line ( struct P_line * Line )

Free line structure.

Parameters

pointer to P_line struct to be freed

Definition at line 177 of file struct_alloc.c.

References G_free(), and P_line::topo.

Referenced by dig_free_plus_lines(), and dig_Rd_P_line().

◆ dig_free_node()

void dig_free_node ( struct P_node * Node )

Free node structure.

Parameters

Node	pointer to P_node struct to be freed

Definition at line 48 of file struct_alloc.c.

References P_node::alloc_lines, P_node::angles, G_free(), and P_node::lines.

Referenced by dig_free_plus_nodes(), and dig_Rd_P_node().

◆ dig_isle_alloc_line()

int dig_isle_alloc_line	(	struct P_isle *	isle,
		int	add
	)

Allocate space in P_isle for add new lines.

Parameters

isle	pointer to P_area struct
add	number of isle to be added

Returns: 0 on success; -1 on error

Definition at line 466 of file struct_alloc.c.

Referenced by dig_Rd_P_isle().

◆ dig_node_alloc_line()

int dig_node_alloc_line	(	struct P_node *	node,
		int	add
	)

Allocate space in P_node struct.

Lines and angles arrays to add 'add' more lines

Parameters

node	pointer to P_node struct
add	number lines to be added

Returns: 0 on success; -1 on error

Definition at line 69 of file struct_alloc.c.

Referenced by dig_Rd_P_node().

◆ dig_out_of_memory()

int dig_out_of_memory ( void )

For now just print message and return error code.

Definition at line 487 of file struct_alloc.c.

References _, and G_warning().

Referenced by dig_alloc_cats(), and dig_alloc_points().

lib
vector
diglib
struct_alloc.c
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