mp_chunk_t Struct Reference


Data Fields
unsigned long	magic
mp_chunk_t *	next
mp_chunk_t *	prev
mp_pool_t *	pool
mp_allocated_t *	first_free
int	n_allocated
int	capacity
size_t	mem_size
char *	next_mem
char	mem [1]

Detailed Description

A chunk of memory. Chunks come from malloc; we use them

Field Documentation

unsigned long mp_chunk_t::magic

Must be MP_CHUNK_MAGIC if this chunk is valid.

Referenced by mp_pool_clean(), and mp_pool_release().

mp_chunk_t* mp_chunk_t::next

The next free, used, or full chunk in sequence.

Referenced by mp_pool_clean(), mp_pool_get(), mp_pool_log_status(), and mp_pool_release().

mp_chunk_t* mp_chunk_t::prev

The previous free, used, or full chunk in sequence.

Referenced by mp_pool_get(), and mp_pool_release().

mp_pool_t* mp_chunk_t::pool

The pool that this chunk is part of.

Referenced by mp_pool_release().

mp_allocated_t* mp_chunk_t::first_free

First free item in the freelist for this chunk. Note that this may be NULL even if this chunk is not at capacity: if so, the free memory at next_mem has not yet been carved into items.

Referenced by mp_pool_get(), and mp_pool_release().

int mp_chunk_t::n_allocated

Number of currently allocated items in this chunk.

Referenced by mp_pool_get(), mp_pool_log_status(), and mp_pool_release().

int mp_chunk_t::capacity

Number of items that can be fit into this chunk.

Referenced by mp_pool_get(), and mp_pool_release().

size_t mp_chunk_t::mem_size

Number of usable bytes in mem.

Referenced by mp_pool_get(), and mp_pool_log_status().

char* mp_chunk_t::next_mem

Pointer into part of mem not yet carved up.