25 #ifndef PIPEWIRE_MEM_H 26 #define PIPEWIRE_MEM_H 90 #define PW_VERSION_MEMPOOL_EVENTS 0 94 void (*destroy) (
void *
data);
108 struct spa_hook *listener,
135 static inline void pw_memblock_unref(
struct pw_memblock *mem)
181 #define PW_MAP_RANGE_INIT (struct pw_map_range){ 0, } 185 static inline void pw_map_range_init(
struct pw_map_range *range,
186 uint32_t offset, uint32_t size,
189 range->
offset = SPA_ROUND_DOWN_N(offset, page_size);
191 range->
size = SPA_ROUND_UP_N(range->
start + size, page_size);
parameters to map a memory range
Definition: mem.h:175
struct pw_memblock * pw_mempool_find_id(struct pw_mempool *pool, uint32_t id)
Find memblock for given id.
Definition: mem.c:737
A collection of key/value pairs.
Definition: properties.h:45
int pw_memmap_free(struct pw_memmap *map)
Unmap a region.
Definition: mem.c:419
struct pw_memmap * map
optional map when PW_MEMBLOCK_FLAG_MAP was given
Definition: mem.h:76
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.
Definition: mem.c:554
uint32_t offset
offset in first page with start of data
Definition: mem.h:177
struct pw_memblock * block
owner memblock
Definition: mem.h:81
struct pw_memblock * pw_mempool_find_ptr(struct pw_mempool *pool, const void *ptr)
Find memblock for given ptr.
Definition: mem.c:718
void * ptr
mapped pointer
Definition: mem.h:82
uint32_t type
type of the fd, one of enum spa_data_type
Definition: mem.h:73
pw_memmap_flags
Definition: mem.h:47
mmap the fd
Definition: mem.h:40
pw_memblock_flags
Flags passed to pw_mempool_alloc()
Definition: mem.h:35
uint32_t version
Definition: mem.h:91
void pw_mempool_add_listener(struct pw_mempool *pool, struct spa_hook *listener, const struct pw_mempool_events *events, void *data)
Listen for events.
Definition: mem.c:191
uint32_t flags
flags for the memory block on of enum pw_memblock_flags
Definition: mem.h:72
writes will be private
Definition: mem.h:53
uint32_t size
size in memblock
Definition: mem.h:85
int fd
fd
Definition: mem.h:74
struct pw_memblock * pw_mempool_find_fd(struct pw_mempool *pool, int fd)
Find memblock for given fd.
Definition: mem.c:751
memory is writable
Definition: mem.h:38
uint32_t offset
offset in memblock
Definition: mem.h:84
void pw_memblock_free(struct pw_memblock *mem)
Free a memblock regardless of the refcount and destroy all mappings.
struct pw_mempool * pool
owner pool
Definition: mem.h:69
uint32_t start
Definition: mem.h:176
map in read mode
Definition: mem.h:49
struct pw_mempool * pw_mempool_new(struct pw_properties *props)
Create a new memory pool.
Definition: mem.c:135
memory is readable
Definition: mem.h:37
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
Definition: mem.c:763
a mapped region of a pw_memblock
Definition: mem.h:80
uint32_t flags
flags for the mapping on of enum pw_memmap_flags
Definition: mem.h:83
void pw_mempool_clear(struct pw_mempool *pool)
Clear a pool.
Definition: mem.c:160
uint32_t id
unique id
Definition: mem.h:70
int ref
refcount
Definition: mem.h:71
map the same area twice after each other, creating a circular ringbuffer
Definition: mem.h:51
A memory pool is a collection of pw_memblocks.
Definition: mem.h:68
uint32_t tag[5]
user tag
Definition: mem.h:86
don't close fd
Definition: mem.h:41
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.
Definition: mem.c:357
don't notify events
Definition: mem.h:42
uint32_t size
size of memory
Definition: mem.h:75
seal the fd
Definition: mem.h:39
int pw_mempool_remove_id(struct pw_mempool *pool, uint32_t id)
Remove a memblock for given id.
Definition: mem.c:654
struct pw_properties * props
Definition: mem.h:63
struct pw_memblock * pw_mempool_import_block(struct pw_mempool *pool, struct pw_memblock *mem)
Import a block from another pool.
Definition: mem.c:591
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.
Definition: mem.c:404
uint32_t size
page aligned offset to map
Definition: mem.h:178
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.
void pw_mempool_destroy(struct pw_mempool *pool)
Clear and destroy a pool.
Definition: mem.c:172
map in write mode
Definition: mem.h:50
struct pw_memmap * pw_mempool_import_map(struct pw_mempool *pool, struct pw_mempool *other, void *data, uint32_t size, uint32_t tag[5])
Definition: mem.c:602