threads.h File Reference

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Data Structures
struct	vlib_thread_registration_
struct	vlib_frame_queue_elt_t
struct	vlib_worker_thread_t
struct	vlib_frame_queue_t
struct	vlib_frame_queue_main_t
struct	vlib_thread_callbacks_t
struct	vlib_thread_main_t

Macros
#define	VLIB_MAX_CPUS   256
#define	VLIB_CPU_MASK   (VLIB_MAX_CPUS - 1) /* 0x3f, max */
#define	VLIB_OFFSET_MASK   (~VLIB_CPU_MASK)
#define	VLIB_LOG2_THREAD_STACK_SIZE   (20)
#define	VLIB_THREAD_STACK_SIZE   (1<<VLIB_LOG2_THREAD_STACK_SIZE)
#define	BARRIER_SYNC_DELAY   (0.030000)
#define	BARRIER_SYNC_TIMEOUT   (600.1)
#define	foreach_vlib_main(body)
#define	foreach_sched_policy
#define	VLIB_REGISTER_THREAD(x, ...)

Typedefs
typedef void(	vlib_thread_function_t) (void *arg)
typedef struct vlib_thread_registration_	vlib_thread_registration_t

Enumerations
enum	vlib_frame_queue_msg_type_t { VLIB_FRAME_QUEUE_ELT_DISPATCH_FRAME }
enum	vlib_fork_fixup_t { VLIB_WORKER_THREAD_FORK_FIXUP_ILLEGAL = 0, VLIB_WORKER_THREAD_FORK_FIXUP_NEW_SW_IF_INDEX }
enum	sched_policy_t { SCHED_POLICY_N }

Functions
void	vlib_set_thread_name (char *name)
clib_error_t *	vlib_thread_init (vlib_main_t *vm)
vlib_worker_thread_t *	vlib_alloc_thread (vlib_main_t *vm)
int	vlib_frame_queue_enqueue (vlib_main_t *vm, u32 node_runtime_index, u32 frame_queue_index, vlib_frame_t *frame, vlib_frame_queue_msg_type_t type)
int	vlib_frame_queue_dequeue (vlib_main_t *vm, vlib_frame_queue_main_t *fqm)
u64	dispatch_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_node_type_t type, vlib_node_state_t dispatch_state, vlib_frame_t *frame, u64 last_time_stamp)
u64	dispatch_pending_node (vlib_main_t *vm, vlib_pending_frame_t *p, u64 last_time_stamp)
void	vlib_worker_thread_node_runtime_update (void)
void	vlib_create_worker_threads (vlib_main_t *vm, int n, void(*thread_function)(void *))
void	vlib_worker_thread_init (vlib_worker_thread_t *w)
u32	vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts)
void	vlib_worker_thread_barrier_sync (vlib_main_t *vm)
void	vlib_worker_thread_barrier_release (vlib_main_t *vm)
static void	vlib_smp_unsafe_warning (void)
void	vlib_worker_thread_fork_fixup (vlib_fork_fixup_t which)
static void	vlib_worker_thread_barrier_check (void)
static u32	vlib_num_workers ()
static u32	vlib_get_worker_cpu_index (u32 worker_index)
static u32	vlib_get_worker_index (u32 cpu_index)
static u32	vlib_get_current_worker_index ()
static vlib_main_t *	vlib_get_worker_vlib_main (u32 worker_index)
static void	vlib_put_frame_queue_elt (vlib_frame_queue_elt_t *hf)
static vlib_frame_queue_elt_t *	vlib_get_frame_queue_elt (u32 frame_queue_index, u32 index)
static vlib_frame_queue_t *	is_vlib_frame_queue_congested (u32 frame_queue_index, u32 index, u32 queue_hi_thresh, vlib_frame_queue_t **handoff_queue_by_worker_index)
static vlib_frame_queue_elt_t *	vlib_get_worker_handoff_queue_elt (u32 frame_queue_index, u32 vlib_worker_index, vlib_frame_queue_elt_t **handoff_queue_elt_by_worker_index)
int	vlib_thread_cb_register (struct vlib_main_t *vm, vlib_thread_callbacks_t *cb)

Variables
vlib_main_t **	vlib_mains
vlib_worker_thread_t *	vlib_worker_threads
vlib_thread_main_t	vlib_thread_main

Macro Definition Documentation

#define BARRIER_SYNC_DELAY   (0.030000)

Definition at line 183 of file threads.h.

#define BARRIER_SYNC_TIMEOUT   (600.1)

Definition at line 187 of file threads.h.

#define foreach_sched_policy

Value:

_(SCHED_OTHER, OTHER, "other") \
  _(SCHED_BATCH, BATCH, "batch") \
  _(SCHED_IDLE, IDLE, "idle")   \
  _(SCHED_FIFO, FIFO, "fifo")   \
  _(SCHED_RR, RR, "rr")

Definition at line 246 of file threads.h.

#define foreach_vlib_main

(

body

)

Value:

do {                                                    \
  vlib_main_t ** __vlib_mains = 0, *this_vlib_main;     \
  int ii;                                               \
                                                        \
  for (ii = 0; ii < vec_len (vlib_mains); ii++)         \
    {                                                   \
      this_vlib_main = vlib_mains[ii];                  \
      if (this_vlib_main)                               \
        vec_add1 (__vlib_mains, this_vlib_main);        \
    }                                                   \
                                                        \
  for (ii = 0; ii < vec_len (__vlib_mains); ii++)       \
    {                                                   \
      this_vlib_main = __vlib_mains[ii];                \
      /* body uses this_vlib_main... */                 \
      (body);                                           \
    }                                                   \
  vec_free (__vlib_mains);                              \
} while (0);

Definition at line 225 of file threads.h.

#define VLIB_CPU_MASK   (VLIB_MAX_CPUS - 1) /* 0x3f, max */

Definition at line 62 of file threads.h.

#define VLIB_LOG2_THREAD_STACK_SIZE   (20)

Definition at line 65 of file threads.h.

#define VLIB_MAX_CPUS   256

Definition at line 55 of file threads.h.

#define VLIB_OFFSET_MASK   (~VLIB_CPU_MASK)

Definition at line 63 of file threads.h.

#define VLIB_REGISTER_THREAD	(		x,
			...
	)

Value:

__VA_ARGS__ vlib_thread_registration_t x;             \
static void __vlib_add_thread_registration_##x (void)   \
  __attribute__((__constructor__)) ;                    \
static void __vlib_add_thread_registration_##x (void)   \
{                                                       \
  vlib_thread_main_t * tm = &vlib_thread_main;          \
  x.next = tm->next;                                    \
  tm->next = &x;                                        \
}                                                       \
__VA_ARGS__ vlib_thread_registration_t x

Definition at line 332 of file threads.h.

#define VLIB_THREAD_STACK_SIZE   (1<<VLIB_LOG2_THREAD_STACK_SIZE)

Definition at line 66 of file threads.h.

Typedef Documentation

typedef void( vlib_thread_function_t) (void *arg)

Definition at line 26 of file threads.h.

typedef struct vlib_thread_registration_ vlib_thread_registration_t

Enumeration Type Documentation

enum sched_policy_t

Enumerator
SCHED_POLICY_N

Definition at line 253 of file threads.h.

enum vlib_fork_fixup_t

Enumerator
VLIB_WORKER_THREAD_FORK_FIXUP_ILLEGAL
VLIB_WORKER_THREAD_FORK_FIXUP_NEW_SW_IF_INDEX

Definition at line 205 of file threads.h.

enum vlib_frame_queue_msg_type_t

Enumerator
VLIB_FRAME_QUEUE_ELT_DISPATCH_FRAME

Definition at line 68 of file threads.h.

Function Documentation

u64 dispatch_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_node_type_t	type,
		vlib_node_state_t	dispatch_state,
		vlib_frame_t *	frame,
		u64	last_time_stamp
	)

Definition at line 921 of file main.c.

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u64 dispatch_pending_node	(	vlib_main_t *	vm,
		vlib_pending_frame_t *	p,
		u64	last_time_stamp
	)

Definition at line 1097 of file main.c.

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static vlib_frame_queue_t* is_vlib_frame_queue_congested ( u32  frame_queue_index, u32  index, u32  queue_hi_thresh, vlib_frame_queue_t **  handoff_queue_by_worker_index  )

inlinestatic

Definition at line 418 of file threads.h.

vlib_worker_thread_t* vlib_alloc_thread

(

vlib_main_t *

vm

)

Definition at line 279 of file threads.c.

void vlib_create_worker_threads	(	vlib_main_t *	vm,
		int	n,
		void(*)(void *)	thread_function
	)

int vlib_frame_queue_dequeue	(	vlib_main_t *	vm,
		vlib_frame_queue_main_t *	fqm
	)

Definition at line 1261 of file threads.c.

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int vlib_frame_queue_enqueue	(	vlib_main_t *	vm,
		u32	node_runtime_index,
		u32	frame_queue_index,
		vlib_frame_t *	frame,
		vlib_frame_queue_msg_type_t	type
	)

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u32 vlib_frame_queue_main_init	(	u32	node_index,
		u32	frame_queue_nelts
	)

Definition at line 1423 of file threads.c.

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static u32 vlib_get_current_worker_index ( )

inlinestatic

Definition at line 363 of file threads.h.

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static vlib_frame_queue_elt_t* vlib_get_frame_queue_elt ( u32  frame_queue_index, u32  index  )

inlinestatic

Definition at line 387 of file threads.h.

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static u32 vlib_get_worker_cpu_index ( u32  worker_index )

inlinestatic

Definition at line 351 of file threads.h.

static vlib_frame_queue_elt_t* vlib_get_worker_handoff_queue_elt ( u32  frame_queue_index, u32  vlib_worker_index, vlib_frame_queue_elt_t **  handoff_queue_elt_by_worker_index  )

inlinestatic

Definition at line 450 of file threads.h.

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static u32 vlib_get_worker_index ( u32  cpu_index )

inlinestatic

Definition at line 357 of file threads.h.

static vlib_main_t* vlib_get_worker_vlib_main ( u32  worker_index )

inlinestatic

Definition at line 369 of file threads.h.

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static u32 vlib_num_workers ( )

inlinestatic

Definition at line 345 of file threads.h.

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static void vlib_put_frame_queue_elt ( vlib_frame_queue_elt_t *  hf )

inlinestatic

Definition at line 380 of file threads.h.

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void vlib_set_thread_name

(

char *

name

)

Definition at line 74 of file threads.c.

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static void vlib_smp_unsafe_warning ( void  )

inlinestatic

Definition at line 196 of file threads.h.

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int vlib_thread_cb_register	(	struct vlib_main_t *	vm,
		vlib_thread_callbacks_t *	cb
	)

Definition at line 1450 of file threads.c.

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clib_error_t* vlib_thread_init

(

vlib_main_t *

vm

)

Definition at line 129 of file threads.c.

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static void vlib_worker_thread_barrier_check ( void  )

inlinestatic

Definition at line 214 of file threads.h.

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void vlib_worker_thread_barrier_release

(

vlib_main_t *

vm

)

Definition at line 1231 of file threads.c.

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void vlib_worker_thread_barrier_sync

(

vlib_main_t *

vm

)

Definition at line 1199 of file threads.c.

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void vlib_worker_thread_fork_fixup

(

vlib_fork_fixup_t

which

)

Definition at line 1176 of file threads.c.

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void vlib_worker_thread_init

(

vlib_worker_thread_t *

w

)

Definition at line 455 of file threads.c.

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void vlib_worker_thread_node_runtime_update

(

void

)

Definition at line 814 of file threads.c.

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Variable Documentation

vlib_main_t** vlib_mains

Definition at line 285 of file buffer.c.

vlib_thread_main_t vlib_thread_main

Definition at line 36 of file threads.c.

vlib_worker_thread_t* vlib_worker_threads

Definition at line 35 of file threads.c.