segment_manager.c File Reference

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Functions
void	segment_manager_get_segment_info (u32 index, u8 **name, u32 *size)
static int	session_manager_add_segment_i (segment_manager_t *sm, u32 segment_size, u8 *segment_name)
int	session_manager_add_segment (segment_manager_t *sm)
int	session_manager_add_first_segment (segment_manager_t *sm, u32 segment_size)
static void	segment_manager_alloc_process_private_segment (segment_manager_properties_t *props)
int	segment_manager_init (segment_manager_t *sm, segment_manager_properties_t *properties, u32 first_seg_size)
	Initializes segment manager based on options provided. More...
void	segment_manager_del (segment_manager_t *sm)
	Removes segment manager. More...
static int	segment_manager_notify_app_seg_add (segment_manager_t *sm, u32 fifo_segment_index)
int	segment_manager_alloc_session_fifos (segment_manager_t *sm, svm_fifo_t **server_rx_fifo, svm_fifo_t **server_tx_fifo, u32 *fifo_segment_index)
void	segment_manager_dealloc_fifos (u32 svm_segment_index, svm_fifo_t *rx_fifo, svm_fifo_t *tx_fifo)
unix_shared_memory_queue_t *	segment_manager_alloc_queue (segment_manager_t *sm, u32 queue_size)
	Allocates shm queue in the first segment. More...
void	segment_manager_dealloc_queue (segment_manager_t *sm, unix_shared_memory_queue_t *q)
	Frees shm queue allocated in the first segment. More...

Variables
u32	segment_name_counter = 0
	Counter used to build segment names. More...
segment_manager_t *	segment_managers = 0
	Pool of segment managers. More...
u32	private_segment_index = ~0
	Process private segment index. More...
u32	default_fifo_size = 1 << 16
	Default fifo and segment size. More...
u32	default_segment_size = 1 << 20

Function Documentation

static void segment_manager_alloc_process_private_segment ( segment_manager_properties_t *  props )

static

Definition at line 111 of file segment_manager.c.

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unix_shared_memory_queue_t* segment_manager_alloc_queue	(	segment_manager_t *	sm,
		u32	queue_size
	)

Allocates shm queue in the first segment.

Definition at line 378 of file segment_manager.c.

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int segment_manager_alloc_session_fifos	(	segment_manager_t *	sm,
		svm_fifo_t **	server_rx_fifo,
		svm_fifo_t **	server_tx_fifo,
		u32 *	fifo_segment_index
	)

Definition at line 240 of file segment_manager.c.

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void segment_manager_dealloc_fifos	(	u32	svm_segment_index,
		svm_fifo_t *	rx_fifo,
		svm_fifo_t *	tx_fifo
	)

Definition at line 344 of file segment_manager.c.

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void segment_manager_dealloc_queue	(	segment_manager_t *	sm,
		unix_shared_memory_queue_t *	q
	)

Frees shm queue allocated in the first segment.

Definition at line 403 of file segment_manager.c.

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void segment_manager_del

(

segment_manager_t *

sm

)

Removes segment manager.

Since the fifos allocated in the segment keep backpointers to the sessions prior to removing the segment, we call session disconnect. This subsequently propages into transport.

Definition at line 178 of file segment_manager.c.

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void segment_manager_get_segment_info	(	u32	index,
		u8 **	name,
		u32 *	size
	)

Definition at line 42 of file segment_manager.c.

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int segment_manager_init	(	segment_manager_t *	sm,
		segment_manager_properties_t *	properties,
		u32	first_seg_size
	)

Initializes segment manager based on options provided.

Returns error if svm segment allocation fails.

Definition at line 138 of file segment_manager.c.

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static int segment_manager_notify_app_seg_add ( segment_manager_t *  sm, u32  fifo_segment_index  )

static

Definition at line 224 of file segment_manager.c.

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int session_manager_add_first_segment	(	segment_manager_t *	sm,
		u32	segment_size
	)

Definition at line 98 of file segment_manager.c.

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int session_manager_add_segment

(

segment_manager_t *

sm

)

Definition at line 80 of file segment_manager.c.

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static int session_manager_add_segment_i ( segment_manager_t *  sm, u32  segment_size, u8 *  segment_name  )

inlinestatic

Definition at line 51 of file segment_manager.c.

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Variable Documentation

u32 default_fifo_size = 1 << 16

Default fifo and segment size.

TODO config.

Definition at line 38 of file segment_manager.c.

u32 default_segment_size = 1 << 20

Definition at line 39 of file segment_manager.c.

u32 private_segment_index = ~0

Process private segment index.

Definition at line 33 of file segment_manager.c.

segment_manager_t* segment_managers = 0

Pool of segment managers.

Definition at line 28 of file segment_manager.c.

u32 segment_name_counter = 0

Counter used to build segment names.

Definition at line 23 of file segment_manager.c.