mem.c File Reference

Include dependency graph for mem.c:

Data Structures
struct	mempool
struct	memblock
struct	mapping
struct	memmap

Macros
#define	NAME   "mempool"
#define	MFD_CLOEXEC   0x0001U
#define	MFD_ALLOW_SEALING   0x0002U
#define	F_LINUX_SPECIFIC_BASE   1024
#define	F_ADD_SEALS   (F_LINUX_SPECIFIC_BASE + 9)
#define	F_GET_SEALS   (F_LINUX_SPECIFIC_BASE + 10)
#define	F_SEAL_SEAL   0x0001 /* prevent further seals from being set */
#define	F_SEAL_SHRINK   0x0002 /* prevent file from shrinking */
#define	F_SEAL_GROW   0x0004 /* prevent file from growing */
#define	F_SEAL_WRITE   0x0008 /* prevent writes */
#define	pw_mempool_emit(p, m, v, ...)   spa_hook_list_call(&p->listener_list, struct pw_mempool_events, m, v, ##__VA_ARGS__)
#define	pw_mempool_emit_destroy(p)   pw_mempool_emit(p, destroy, 0)
#define	pw_mempool_emit_added(p, b)   pw_mempool_emit(p, added, 0, b)
#define	pw_mempool_emit_removed(p, b)   pw_mempool_emit(p, removed, 0, b)

Functions
struct pw_mempool *	pw_mempool_new (struct pw_properties *props)
	Create a new memory pool. More...
void	pw_mempool_clear (struct pw_mempool *pool)
	Clear a pool. More...
void	pw_mempool_destroy (struct pw_mempool *pool)
	Clear and destroy a pool. More...
void	pw_mempool_add_listener (struct pw_mempool *pool, struct spa_hook *listener, const struct pw_mempool_events *events, void *data)
	Listen for events. More...
SPA_EXPORT 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. More...
SPA_EXPORT 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. More...
SPA_EXPORT int	pw_memmap_free (struct pw_memmap *map)
	Unmap a region. More...
SPA_EXPORT 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. More...
SPA_EXPORT struct pw_memblock *	pw_mempool_import_block (struct pw_mempool *pool, struct pw_memblock *mem)
	Import a block from another pool. More...
SPA_EXPORT struct pw_memmap *	pw_mempool_import_map (struct pw_mempool *pool, struct pw_mempool *other, void *data, uint32_t size, uint32_t tag[5])
int	pw_mempool_remove_id (struct pw_mempool *pool, uint32_t id)
	Remove a memblock for given id. More...
SPA_EXPORT struct pw_memblock *	pw_mempool_find_ptr (struct pw_mempool *pool, const void *ptr)
	Find memblock for given ptr. More...
SPA_EXPORT struct pw_memblock *	pw_mempool_find_id (struct pw_mempool *pool, uint32_t id)
	Find memblock for given id. More...
SPA_EXPORT struct pw_memblock *	pw_mempool_find_fd (struct pw_mempool *pool, int fd)
	Find memblock for given fd. More...
SPA_EXPORT 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 More...

Macro Definition Documentation

F_ADD_SEALS

#define F_ADD_SEALS   (F_LINUX_SPECIFIC_BASE + 9)

F_GET_SEALS

#define F_GET_SEALS   (F_LINUX_SPECIFIC_BASE + 10)

F_LINUX_SPECIFIC_BASE

#define F_LINUX_SPECIFIC_BASE   1024

F_SEAL_GROW

#define F_SEAL_GROW   0x0004 /* prevent file from growing */

F_SEAL_SEAL

#define F_SEAL_SEAL   0x0001 /* prevent further seals from being set */

F_SEAL_SHRINK

#define F_SEAL_SHRINK   0x0002 /* prevent file from shrinking */

F_SEAL_WRITE

#define F_SEAL_WRITE   0x0008 /* prevent writes */

MFD_ALLOW_SEALING

#define MFD_ALLOW_SEALING   0x0002U

MFD_CLOEXEC

#define MFD_CLOEXEC   0x0001U

NAME

#define NAME   "mempool"

pw_mempool_emit

#define pw_mempool_emit	(		p,
			m,
			v,
			...
	)		spa_hook_list_call(&p->listener_list, struct pw_mempool_events, m, v, ##__VA_ARGS__)

pw_mempool_emit_added

#define pw_mempool_emit_added	(		p,
			b
	)		pw_mempool_emit(p, added, 0, b)

pw_mempool_emit_destroy

#define pw_mempool_emit_destroy

(

p

)

pw_mempool_emit(p, destroy, 0)

pw_mempool_emit_removed

#define pw_mempool_emit_removed	(		p,
			b
	)		pw_mempool_emit(p, removed, 0, b)

Function Documentation

pw_memblock_map()

SPA_EXPORT 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.

References pw_memblock::pool.

Referenced by pw_memblock::pw_mempool_alloc(), and pw_mempool_map_id().

pw_memmap_free()

SPA_EXPORT int pw_memmap_free

(

struct pw_memmap *

map

)

Unmap a region.

References mapping::block, pw_memblock::fd, memmap::link, memmap::mapping, NAME, pw_memblock::pool, pw_memmap::ptr, pw_log::pw_log_debug, mapping::ref, memblock::this, and memmap::this.

Referenced by pw_memblock::pw_memblock_free().

pw_mempool_add_listener()

void pw_mempool_add_listener	(	struct pw_mempool *	pool,
		struct spa_hook *	listener,
		const struct pw_mempool_events *	events,
		void *	data
	)

Listen for events.

Referenced by pw_impl_client::pw_context_create_client().

pw_mempool_clear()

void pw_mempool_clear

(

struct pw_mempool *

pool

)

Clear a pool.

References memblock::link, NAME, pw_log::pw_log_debug, pw_memblock::pw_memblock_free(), and memblock::this.

Referenced by pw_mempool_destroy().

pw_mempool_destroy()

void pw_mempool_destroy

(

struct pw_mempool *

pool

)

Clear and destroy a pool.

References NAME, pw_mempool::props, pw_log::pw_log_debug, pw_map::pw_map_clear(), pw_mempool_clear(), pw_mempool_emit_destroy, and pw_properties::pw_properties_free().

pw_mempool_find_fd()

SPA_EXPORT struct pw_memblock* pw_mempool_find_fd	(	struct pw_mempool *	pool,
		int	fd
	)

Find memblock for given fd.

pw_mempool_find_id()

SPA_EXPORT struct pw_memblock* pw_mempool_find_id	(	struct pw_mempool *	pool,
		uint32_t	id
	)

Find memblock for given id.

References NAME, pw_log::pw_log_debug, pw_map::pw_map_lookup(), and memblock::this.

pw_mempool_find_ptr()

SPA_EXPORT struct pw_memblock* pw_mempool_find_ptr	(	struct pw_mempool *	pool,
		const void *	ptr
	)

Find memblock for given ptr.

References pw_memblock::id, mapping::link, memblock::mappings, NAME, mapping::ptr, pw_log::pw_log_debug, mapping::size, and memblock::this.

Referenced by pw_mempool_import_map().

pw_mempool_find_tag()

SPA_EXPORT 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

References memmap::link, memblock::memmaps, NAME, pw_log::pw_log_debug, pw_memmap::tag, and memmap::this.

pw_mempool_import()

SPA_EXPORT 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.

Referenced by pw_mempool_import_block().

pw_mempool_import_block()

SPA_EXPORT struct pw_memblock* pw_mempool_import_block	(	struct pw_mempool *	pool,
		struct pw_memblock *	mem
	)

Import a block from another pool.

References pw_memblock::fd, pw_memblock::flags, NAME, pw_memblock::pool, pw_log::pw_log_debug, PW_MEMBLOCK_FLAG_DONT_CLOSE, pw_mempool_import(), and pw_memblock::type.

Referenced by pw_mempool_import_map().

pw_mempool_import_map()

SPA_EXPORT struct pw_memmap* pw_mempool_import_map	(	struct pw_mempool *	pool,
		struct pw_mempool *	other,
		void *	data,
		uint32_t	size,
		uint32_t	tag[5]
	)

References pw_memmap::block, mapping::block, pw_memblock::map, pw_memmap::offset, pw_mempool_find_ptr(), pw_mempool_import_block(), and pw_memblock::ref.

pw_mempool_map_id()

SPA_EXPORT 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.

References pw_map::pw_map_lookup(), pw_memblock_map(), and memblock::this.

pw_mempool_new()

struct pw_mempool* pw_mempool_new

(

struct pw_properties *

props

)

Create a new memory pool.

References NAME, pw_mempool::props, pw_log::pw_log_debug, pw_map::pw_map_init(), and impl::this.

Referenced by pw_impl_client::pw_context_create_client().

pw_mempool_remove_id()

int pw_mempool_remove_id	(	struct pw_mempool *	pool,
		uint32_t	id
	)

Remove a memblock for given id.

References pw_memblock::fd, pw_memblock::id, NAME, pw_log::pw_log_debug, pw_map::pw_map_lookup(), pw_map::pw_map_remove(), pw_memblock::ref, and memblock::this.