mem.h File Reference

pipewire/mem.h More...

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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...

Macros
#define	PW_VERSION_MEMPOOL_EVENTS   0
#define	PW_MAP_RANGE_INIT   (struct pw_map_range){ 0, }

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 }

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().

Detailed Description

pipewire/mem.h