Contiki-NG
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Files | |
file | memb.c |
Memory block allocation routines. | |
file | memb.h |
Memory block allocation routines. | |
Macros | |
#define | MEMB(name, structure, num) |
Declare a memory block. | |
Functions | |
void | memb_init (struct memb *m) |
Initialize a memory block that was declared with MEMB(). | |
void * | memb_alloc (struct memb *m) |
Allocate a memory block from a block of memory declared with MEMB(). | |
int | memb_free (struct memb *m, void *ptr) |
Deallocate a memory block from a memory block previously declared with MEMB(). | |
int | memb_inmemb (struct memb *m, void *ptr) |
Check if a given address is within a memory area previously declared with MEMB(). | |
size_t | memb_numfree (struct memb *m) |
Count free memory blocks. | |
The memory block allocation routines provide a simple yet powerful set of functions for managing a set of memory blocks of fixed size. A set of memory blocks is statically declared with the MEMB() macro. Memory blocks are allocated from the declared memory by the memb_alloc() function, and are deallocated with the memb_free() function.
#define MEMB | ( | name, | |
structure, | |||
num ) |
Declare a memory block.
This macro is used to statically declare a block of memory that can be used by the block allocation functions. The macro statically declares a C array with a size that matches the specified number of blocks and their individual sizes.
Example:
name | The name of the memory block (later used with memb_init(), memb_alloc() and memb_free()). |
structure | The name of the struct that the memory block holds |
num | The total number of memory chunks in the block. |
void * memb_alloc | ( | struct memb * | m | ) |
Allocate a memory block from a block of memory declared with MEMB().
m | A set of memory blocks previously declared with MEMB(). |
Definition at line 59 of file memb.c.
Referenced by sixp_trans_alloc(), tsch_queue_add_packet(), tsch_schedule_add_link(), tsch_schedule_add_slotframe(), uip_ds6_nbr_add(), uip_mcast6_route_add(), uip_nameserver_update(), and uip_sr_update_node().
int memb_free | ( | struct memb * | m, |
void * | ptr ) |
Deallocate a memory block from a memory block previously declared with MEMB().
m | m A set of memory blocks previously declared with MEMB(). |
ptr | A pointer to the memory block that is to be deallocated. |
Definition at line 78 of file memb.c.
Referenced by sixp_trans_free(), tsch_queue_add_packet(), tsch_queue_free_packet(), tsch_schedule_remove_link(), tsch_schedule_remove_slotframe(), uip_ds6_nbr_add(), uip_mcast6_route_rm(), uip_nameserver_update(), uip_sr_free_all(), and uip_sr_periodic().
void memb_init | ( | struct memb * | m | ) |
Initialize a memory block that was declared with MEMB().
m | A set of memory blocks previously declared with MEMB(). |
Definition at line 52 of file memb.c.
Referenced by sixp_trans_init(), tsch_queue_init(), tsch_schedule_init(), uip_mcast6_route_init(), and uip_sr_init().
int memb_inmemb | ( | struct memb * | m, |
void * | ptr ) |
size_t memb_numfree | ( | struct memb * | m | ) |
Count free memory blocks.
m | m A set of memory blocks previously declared with MEMB(). |
Definition at line 108 of file memb.c.
Referenced by tsch_queue_global_packet_count().