PipeWire 1.2.5
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Memory allocation and pools. More...
Files | |
file | mem.h |
pipewire/mem.h | |
Data Structures | |
struct | pw_mempool |
A memory pool is a collection of pw_memblocks. More... | |
struct | pw_memblock |
Memory block structure. More... | |
struct | pw_memmap |
a mapped region of a pw_memblock More... | |
struct | pw_mempool_events |
struct | pw_map_range |
parameters to map a memory range More... | |
struct | pw_memchunk |
Enumerations | |
enum | pw_memblock_flags { PW_MEMBLOCK_FLAG_NONE = 0 , PW_MEMBLOCK_FLAG_READABLE = (1 << 0) , PW_MEMBLOCK_FLAG_WRITABLE = (1 << 1) , PW_MEMBLOCK_FLAG_SEAL = (1 << 2) , PW_MEMBLOCK_FLAG_MAP = (1 << 3) , PW_MEMBLOCK_FLAG_DONT_CLOSE = (1 << 4) , PW_MEMBLOCK_FLAG_DONT_NOTIFY = (1 << 5) , PW_MEMBLOCK_FLAG_UNMAPPABLE = (1 << 6) , PW_MEMBLOCK_FLAG_READWRITE = PW_MEMBLOCK_FLAG_READABLE | PW_MEMBLOCK_FLAG_WRITABLE } |
Flags passed to pw_mempool_alloc() More... | |
enum | pw_memmap_flags { PW_MEMMAP_FLAG_NONE = 0 , PW_MEMMAP_FLAG_READ = (1 << 0) , PW_MEMMAP_FLAG_WRITE = (1 << 1) , PW_MEMMAP_FLAG_TWICE = (1 << 2) , PW_MEMMAP_FLAG_PRIVATE = (1 << 3) , PW_MEMMAP_FLAG_LOCKED = (1 << 4) , PW_MEMMAP_FLAG_READWRITE = PW_MEMMAP_FLAG_READ | PW_MEMMAP_FLAG_WRITE } |
Macros | |
#define | PW_VERSION_MEMPOOL_EVENTS 0 |
#define | PW_MAP_RANGE_INIT (struct pw_map_range){ 0, } |
Functions | |
struct pw_mempool * | pw_mempool_new (struct pw_properties *props) |
Create a new memory pool. | |
void | pw_mempool_add_listener (struct pw_mempool *pool, struct spa_hook *listener, const struct pw_mempool_events *events, void *data) |
Listen for events. | |
void | pw_mempool_clear (struct pw_mempool *pool) |
Clear a pool. | |
void | pw_mempool_destroy (struct pw_mempool *pool) |
Clear and destroy a pool. | |
struct pw_memblock * | pw_mempool_alloc (struct pw_mempool *pool, enum pw_memblock_flags flags, uint32_t type, size_t size) |
Allocate a memory block from the pool. | |
struct pw_memblock * | pw_mempool_import_block (struct pw_mempool *pool, struct pw_memblock *mem) |
Import a block from another pool. | |
struct pw_memblock * | pw_mempool_import (struct pw_mempool *pool, enum pw_memblock_flags flags, uint32_t type, int fd) |
Import an fd into the pool. | |
void | pw_memblock_free (struct pw_memblock *mem) |
Free a memblock regardless of the refcount and destroy all mappings. | |
static void | pw_memblock_unref (struct pw_memblock *mem) |
Unref a memblock. | |
int | pw_mempool_remove_id (struct pw_mempool *pool, uint32_t id) |
Remove a memblock for given id. | |
struct pw_memblock * | pw_mempool_find_ptr (struct pw_mempool *pool, const void *ptr) |
Find memblock for given ptr. | |
struct pw_memblock * | pw_mempool_find_id (struct pw_mempool *pool, uint32_t id) |
Find memblock for given id. | |
struct pw_memblock * | pw_mempool_find_fd (struct pw_mempool *pool, int fd) |
Find memblock for given fd. | |
struct pw_memmap * | pw_memblock_map (struct pw_memblock *block, enum pw_memmap_flags flags, uint32_t offset, uint32_t size, uint32_t tag[5]) |
Map a region of a memory block. | |
struct pw_memmap * | pw_mempool_map_id (struct pw_mempool *pool, uint32_t id, enum pw_memmap_flags flags, uint32_t offset, uint32_t size, uint32_t tag[5]) |
Map a region of a memory block with id. | |
struct pw_memmap * | pw_mempool_import_map (struct pw_mempool *pool, struct pw_mempool *other, void *data, uint32_t size, uint32_t tag[5]) |
struct pw_memmap * | pw_mempool_find_tag (struct pw_mempool *pool, uint32_t tag[5], size_t size) |
find a map with the given tag | |
int | pw_memmap_free (struct pw_memmap *map) |
Unmap a region. | |
static void | pw_map_range_init (struct pw_map_range *range, uint32_t offset, uint32_t size, uint32_t page_size) |
Calculate parameters to mmap() memory into range so that size bytes at offset can be mapped with mmap(). | |
Memory allocation and pools.
enum pw_memblock_flags |
Flags passed to pw_mempool_alloc()
enum pw_memmap_flags |
#define PW_VERSION_MEMPOOL_EVENTS 0 |
#define PW_MAP_RANGE_INIT (struct pw_map_range){ 0, } |
struct pw_mempool * pw_mempool_new | ( | struct pw_properties * | props | ) |
Create a new memory pool.
void pw_mempool_add_listener | ( | struct pw_mempool * | pool, |
struct spa_hook * | listener, | ||
const struct pw_mempool_events * | events, | ||
void * | data ) |
Listen for events.
void pw_mempool_clear | ( | struct pw_mempool * | pool | ) |
Clear a pool.
void pw_mempool_destroy | ( | struct pw_mempool * | pool | ) |
Clear and destroy a pool.
struct pw_memblock * pw_mempool_alloc | ( | struct pw_mempool * | pool, |
enum pw_memblock_flags | flags, | ||
uint32_t | type, | ||
size_t | size ) |
Allocate a memory block from the pool.
Allocate a memory block from the pool.
pool | the pool to use |
flags | memblock flags |
type | the requested memory type one of enum spa_data_type |
size | size to allocate |
struct pw_memblock * pw_mempool_import_block | ( | struct pw_mempool * | pool, |
struct pw_memblock * | mem ) |
Import a block from another pool.
struct pw_memblock * pw_mempool_import | ( | struct pw_mempool * | pool, |
enum pw_memblock_flags | flags, | ||
uint32_t | type, | ||
int | fd ) |
Import an fd into the pool.
void pw_memblock_free | ( | struct pw_memblock * | block | ) |
Free a memblock regardless of the refcount and destroy all mappings.
Free a memblock regardless of the refcount and destroy all mappings.
block | a memblock |
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inlinestatic |
Unref a memblock.
int pw_mempool_remove_id | ( | struct pw_mempool * | pool, |
uint32_t | id ) |
Remove a memblock for given id.
struct pw_memblock * pw_mempool_find_ptr | ( | struct pw_mempool * | pool, |
const void * | ptr ) |
Find memblock for given ptr.
struct pw_memblock * pw_mempool_find_id | ( | struct pw_mempool * | pool, |
uint32_t | id ) |
Find memblock for given id.
struct pw_memblock * pw_mempool_find_fd | ( | struct pw_mempool * | pool, |
int | fd ) |
Find memblock for given fd.
struct pw_memmap * pw_memblock_map | ( | struct pw_memblock * | block, |
enum pw_memmap_flags | flags, | ||
uint32_t | offset, | ||
uint32_t | size, | ||
uint32_t | tag[5] ) |
Map a region of a memory block.
struct pw_memmap * pw_mempool_map_id | ( | struct pw_mempool * | pool, |
uint32_t | id, | ||
enum pw_memmap_flags | flags, | ||
uint32_t | offset, | ||
uint32_t | size, | ||
uint32_t | tag[5] ) |
Map a region of a memory block with id.
struct pw_memmap * pw_mempool_import_map | ( | struct pw_mempool * | pool, |
struct pw_mempool * | other, | ||
void * | data, | ||
uint32_t | size, | ||
uint32_t | tag[5] ) |
struct pw_memmap * pw_mempool_find_tag | ( | struct pw_mempool * | pool, |
uint32_t | tag[5], | ||
size_t | size ) |
find a map with the given tag
int pw_memmap_free | ( | struct pw_memmap * | map | ) |
Unmap a region.
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inlinestatic |
Calculate parameters to mmap() memory into range so that size bytes at offset can be mapped with mmap().