arena.c File Reference

#include "arena.h"
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <sys/mman.h>
#include <unistd.h>
#include <libgen.h>
#include "util/abort.h"

Go to the source code of this file.

Macros
#define	_PSDebug(...)   /* nothing */
#define	NUSED   __attribute__((unused))
#define	_PS_ARENA_ALLOCATE(arena, n)

Functions
void	ps_arena_open (enum ps_arena_domain domain)
	Initializes the given arena for allocation.
void	ps_arena_close (enum ps_arena_domain domain)
	Destroys any allocated objects in the given arena.
void *	ps_arena_allocate (enum ps_arena_domain domain, size_t n)
void *	ps_arena_allocate_debug (enum ps_arena_domain domain, size_t n, const char *file NUSED, const char *func NUSED, size_t line NUSED)
char *	arena_strndup (enum ps_arena_domain arena, const char *str, size_t length)

Variables
struct ps_arena_allocator	arenas [__PS_ARENA_COUNT]

Macro Definition Documentation

_PS_ARENA_ALLOCATE

#define _PS_ARENA_ALLOCATE	(		arena,
			n
	)

Value:

    do {                                                                       \
        if (arena->offset + n >= PS_INITIAL_ARENA_MMAP) {                      \
            _PSDebug("Exhausted arena virtual memory\n%s", "");                \
            ps_exit(1);                                                        \
        }                                                                      \
        arena->offset += n;                                                    \
        if ((arena->offset & (arena->page_size - 1)) > 0) {                    \
            const size_t new_size = (arena->offset + arena->page_size - 1)     \
                                    & -(arena->page_size);                     \
            mprotect(arena->start, new_size, PROT_READ | PROT_WRITE);          \
        }                                                                      \
    } while (0)

Definition at line 62 of file arena.c.

_PSDebug

#define _PSDebug

(

...

)

/* nothing */

Definition at line 18 of file arena.c.

NUSED

#define NUSED   __attribute__((unused))

Definition at line 20 of file arena.c.

Function Documentation

arena_strndup()

char * arena_strndup	(	enum ps_arena_domain	arena,
		const char *	str,
		size_t	length
	)

Definition at line 92 of file arena.c.

ps_arena_allocate()

void * ps_arena_allocate	(	enum ps_arena_domain	domain,
		size_t	n
	)

Definition at line 76 of file arena.c.

ps_arena_allocate_debug()

void * ps_arena_allocate_debug	(	enum ps_arena_domain	domain,
		size_t	n,
		const char *file	NUSED,
		const char *func	NUSED,
		size_t line	NUSED
	)

Definition at line 84 of file arena.c.

ps_arena_close()

void ps_arena_close

(

enum ps_arena_domain

domain

)

Destroys any allocated objects in the given arena.

If the arena is already closed, this function does nothing.

Parameters

domain

The arena to close.

Definition at line 45 of file arena.c.

ps_arena_open()

void ps_arena_open

(

enum ps_arena_domain

domain

)

Initializes the given arena for allocation.

Parameters

domain

The arena to initialize.

Definition at line 24 of file arena.c.

Variable Documentation

arenas

struct ps_arena_allocator arenas[__PS_ARENA_COUNT]

Definition at line 22 of file arena.c.