15 #ifndef included_vlib_threads_h 16 #define included_vlib_threads_h 19 #include <linux/sched.h> 71 #define VLIB_MAX_CPUS 256 74 #if VLIB_MAX_CPUS > CLIB_MAX_MHEAPS 75 #error Please increase number of per-cpu mheaps 78 #define VLIB_CPU_MASK (VLIB_MAX_CPUS - 1) 79 #define VLIB_OFFSET_MASK (~VLIB_CPU_MASK) 81 #define VLIB_LOG2_THREAD_STACK_SIZE (21) 82 #define VLIB_THREAD_STACK_SIZE (1<<VLIB_LOG2_THREAD_STACK_SIZE) 113 void (*thread_function) (
void *);
121 #ifdef BARRIER_TRACING 122 const char *barrier_caller;
123 const char *barrier_context;
186 vlib_frame_queue_msg_type_t type);
194 void (*thread_function) (
void *));
200 #define BARRIER_SYNC_DELAY (0.030000) 204 #define BARRIER_SYNC_TIMEOUT (600.1) 206 #define BARRIER_SYNC_TIMEOUT (1.0) 209 #ifdef BARRIER_TRACING 210 #define vlib_worker_thread_barrier_sync(X) {vlib_worker_threads[0].barrier_caller=__FUNCTION__;vlib_worker_thread_barrier_sync_int(X);} 212 #define vlib_worker_thread_barrier_sync(X) vlib_worker_thread_barrier_sync_int(X) 223 return __os_thread_index;
232 fformat (stderr,
"%s: SMP unsafe warning...\n", __FUNCTION__);
244 #define foreach_vlib_main(body) \ 246 vlib_main_t ** __vlib_mains = 0, *this_vlib_main; \ 249 for (ii = 0; ii < vec_len (vlib_mains); ii++) \ 251 this_vlib_main = vlib_mains[ii]; \ 253 this_vlib_main->parked_at_barrier == 1); \ 254 if (this_vlib_main) \ 255 vec_add1 (__vlib_mains, this_vlib_main); \ 258 for (ii = 0; ii < vec_len (__vlib_mains); ii++) \ 260 this_vlib_main = __vlib_mains[ii]; \ 264 vec_free (__vlib_mains); \ 267 #define foreach_sched_policy \ 268 _(SCHED_OTHER, OTHER, "other") \ 269 _(SCHED_BATCH, BATCH, "batch") \ 270 _(SCHED_IDLE, IDLE, "idle") \ 271 _(SCHED_FIFO, FIFO, "fifo") \ 272 _(SCHED_RR, RR, "rr") 276 #define _(v,f,s) SCHED_POLICY_##f = v, 287 } vlib_thread_callbacks_t;
347 vlib_thread_callbacks_t
cb;
355 #define VLIB_REGISTER_THREAD(x,...) \ 356 __VA_ARGS__ vlib_thread_registration_t x; \ 357 static void __vlib_add_thread_registration_##x (void) \ 358 __attribute__((__constructor__)) ; \ 359 static void __vlib_add_thread_registration_##x (void) \ 361 vlib_thread_main_t * tm = &vlib_thread_main; \ 365 __VA_ARGS__ vlib_thread_registration_t x 376 return worker_index + 1;
382 return thread_index - 1;
425 ASSERT (worker_index < tm->n_vlib_mains - 1);
426 vm = vlib_mains[worker_index + 1];
451 new_tail = __sync_add_and_fetch (&fq->
tail, 1);
457 elt = fq->
elts + (new_tail & (fq->
nelts - 1));
474 handoff_queue_by_worker_index)
481 fq = handoff_queue_by_worker_index[index];
493 handoff_queue_by_worker_index[index] = fq;
503 u32 vlib_worker_index,
505 handoff_queue_elt_by_worker_index)
509 if (handoff_queue_elt_by_worker_index[vlib_worker_index])
510 return handoff_queue_elt_by_worker_index[vlib_worker_index];
514 handoff_queue_elt_by_worker_index[vlib_worker_index] = elt;
521 vlib_thread_callbacks_t * cb);
#define CLIB_CACHE_LINE_ALIGN_MARK(mark)
void vlib_worker_thread_init(vlib_worker_thread_t *w)
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)
void vlib_set_thread_name(char *name)
void * thread_function_arg
frame_queue_trace_t * frame_queue_traces
vlib_worker_thread_t * vlib_worker_threads
void vlib_rpc_call_main_thread(void *function, u8 *args, u32 size)
struct vlib_thread_registration_ * next
int vlib_thread_cb_register(struct vlib_main_t *vm, vlib_thread_callbacks_t *cb)
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 void vlib_smp_unsafe_warning(void)
pthread_t thread[MAX_CONNS]
volatile int parked_at_barrier
static void vlib_worker_thread_barrier_check(void)
vlib_thread_registration_t * next
static u32 vlib_get_worker_index(u32 thread_index)
#define static_always_inline
#define clib_smp_atomic_add(addr, increment)
vlib_frame_queue_msg_type_t
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
int vlib_frame_queue_dequeue(vlib_main_t *vm, vlib_frame_queue_main_t *fqm)
vlib_frame_queue_elt_t * elts
static u32 vlib_get_current_worker_index()
void vlib_process_signal_event_mt_helper(vlib_process_signal_event_mt_args_t *args)
u8 * vlib_thread_stack_init(uword thread_index)
vlib_thread_callbacks_t cb
void vlib_worker_thread_barrier_release(vlib_main_t *vm)
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)
void vlib_worker_thread_node_runtime_update(void)
void vlib_worker_thread_fork_fixup(vlib_fork_fixup_t which)
vlib_frame_queue_t ** vlib_frame_queues
static_always_inline uword vlib_get_thread_index(void)
frame_queue_nelt_counter_t * frame_queue_histogram
void * rpc_call_main_thread_cb_fn
vlib_worker_thread_t * worker_threads
static vlib_frame_queue_elt_t * vlib_get_frame_queue_elt(u32 frame_queue_index, u32 index)
volatile u32 * wait_at_barrier
vlib_frame_queue_main_t * frame_queue_mains
struct vlib_thread_registration_ vlib_thread_registration_t
uword * thread_registrations_by_name
u32 vlib_frame_queue_main_init(u32 node_index, u32 frame_queue_nelts)
volatile u32 * node_reforks_required
static vlib_main_t * vlib_get_main(void)
clib_error_t * vlib_thread_init(vlib_main_t *vm)
int no_data_structure_clone
vlib_main_t ** vlib_mains
void vlib_create_worker_threads(vlib_main_t *vm, int n, void(*thread_function)(void *))
static void vlib_put_frame_queue_elt(vlib_frame_queue_elt_t *hf)
volatile u32 * workers_at_barrier
static u32 vlib_num_workers()
void vlib_worker_thread_node_refork(void)
#define CLIB_MEMORY_BARRIER()
uword * cpu_socket_bitmap
#define foreach_sched_policy
void( vlib_thread_function_t)(void *arg)
vlib_thread_registration_t ** registrations
vlib_thread_main_t vlib_thread_main
vlib_thread_registration_t * registration
volatile u32 worker_thread_release
void vlib_worker_thread_barrier_sync_int(vlib_main_t *vm)
static vlib_main_t * vlib_get_worker_vlib_main(u32 worker_index)
static u32 vlib_get_worker_thread_index(u32 worker_index)