35 extern generic_scheduler* (*AllocateSchedulerPtr)( market& );
41 #if __TBB_TASK_GROUP_CONTEXT 42 context_state_propagation_mutex_type the_context_state_propagation_mutex;
44 uintptr_t the_context_state_propagation_epoch = 0;
55 #if __TBB_TASK_GROUP_CONTEXT 59 #if __TBB_TASK_PRIORITY 78 #if _MSC_VER && !defined(__INTEL_COMPILER) 81 #pragma warning(disable:4355) 88 , my_small_task_count(1)
90 , my_cilk_state(cs_none)
97 #if __TBB_PREVIEW_CRITICAL_TASKS 101 #if __TBB_TASK_PRIORITY 102 my_ref_top_priority = &m.my_global_top_priority;
103 my_ref_reload_epoch = &m.my_global_reload_epoch;
105 #if __TBB_TASK_GROUP_CONTEXT 107 my_context_state_propagation_epoch = the_context_state_propagation_epoch;
108 my_context_list_head.my_prev = &my_context_list_head;
109 my_context_list_head.my_next = &my_context_list_head;
110 ITT_SYNC_CREATE(&my_context_list_mutex, SyncType_Scheduler, SyncObj_ContextsList);
116 #if _MSC_VER && !defined(__INTEL_COMPILER) 118 #endif // warning 4355 is back 120 #if TBB_USE_ASSERT > 1 131 for (
size_t i = 0; i < H; ++i )
132 __TBB_ASSERT( tp[i] == poisoned_ptr,
"Task pool corrupted" );
133 for (
size_t i = H; i < T; ++i ) {
137 tp[i]->prefix().extra_state ==
es_task_proxy,
"task in the deque has invalid state" );
141 __TBB_ASSERT( tp[i] == poisoned_ptr,
"Task pool corrupted" );
152 #if defined(_MSC_VER)&&_MSC_VER<1400 && !_WIN64 154 __asm mov eax, fs:[0x18]
157 NT_TIB *pteb = (NT_TIB*)NtCurrentTeb();
159 __TBB_ASSERT( &pteb < pteb->StackBase && &pteb > pteb->StackLimit,
"invalid stack info in TEB" );
160 __TBB_ASSERT( stack_size >0,
"stack_size not initialized?" );
178 void *stack_base = &stack_size;
179 #if __linux__ && !__bg__ 183 size_t np_stack_size = 0;
184 void *stack_limit = NULL;
185 pthread_attr_t np_attr_stack;
186 if( 0 == pthread_getattr_np(pthread_self(), &np_attr_stack) ) {
187 if ( 0 == pthread_attr_getstack(&np_attr_stack, &stack_limit, &np_stack_size) ) {
189 pthread_attr_t attr_stack;
190 if ( 0 == pthread_attr_init(&attr_stack) ) {
191 if ( 0 == pthread_attr_getstacksize(&attr_stack, &stack_size) ) {
192 if ( np_stack_size < stack_size ) {
195 rsb_base = stack_limit;
196 stack_size = np_stack_size/2;
198 stack_limit = (
char*)stack_limit + stack_size;
204 pthread_attr_destroy(&attr_stack);
207 my_rsb_stealing_threshold = (uintptr_t)((
char*)rsb_base + stack_size/2);
210 stack_size = size_t((
char*)stack_base - (
char*)stack_limit);
212 pthread_attr_destroy(&np_attr_stack);
215 __TBB_ASSERT( stack_size>0,
"stack size must be positive" );
220 #if __TBB_TASK_GROUP_CONTEXT 226 void generic_scheduler::cleanup_local_context_list () {
228 bool wait_for_concurrent_destroyers_to_leave =
false;
229 uintptr_t local_count_snapshot = my_context_state_propagation_epoch;
230 my_local_ctx_list_update.store<
relaxed>(1);
238 if ( my_nonlocal_ctx_list_update.load<
relaxed>() || local_count_snapshot != the_context_state_propagation_epoch )
239 lock.acquire(my_context_list_mutex);
243 while ( node != &my_context_list_head ) {
250 wait_for_concurrent_destroyers_to_leave =
true;
253 my_local_ctx_list_update.store<
release>(0);
255 if ( wait_for_concurrent_destroyers_to_leave )
262 #if __TBB_PREVIEW_CRITICAL_TASKS 265 #if __TBB_TASK_GROUP_CONTEXT 266 cleanup_local_context_list();
270 #if __TBB_HOARD_NONLOCAL_TASKS 271 while(
task* t = my_nonlocal_free_list ) {
273 my_nonlocal_free_list =
p.next;
290 #if __TBB_COUNT_TASK_NODES 291 my_market->update_task_node_count( my_task_node_count );
305 #if __TBB_HOARD_NONLOCAL_TASKS 306 if( (t = my_nonlocal_free_list) ) {
309 my_nonlocal_free_list = t->
prefix().next;
319 __TBB_ASSERT( t,
"another thread emptied the my_return_list" );
325 #if __TBB_COUNT_TASK_NODES 326 ++my_task_node_count;
328 t->
prefix().origin =
this;
332 #if __TBB_PREFETCHING 335 #if __TBB_HOARD_NONLOCAL_TASKS 351 #if __TBB_COUNT_TASK_NODES 352 ++my_task_node_count;
354 t->
prefix().origin = NULL;
357 #if __TBB_TASK_GROUP_CONTEXT 380 task* old =
s.my_return_list;
386 if(
as_atomic(
s.my_return_list).compare_and_swap(&t, old )==old ) {
387 #if __TBB_PREFETCHING 404 if ( T + num_tasks <= my_arena_slot->my_task_pool_size )
422 for (
size_t i = H; i < T; ++i )
431 if ( new_size < 2 * my_arena_slot->my_task_pool_size )
437 for (
size_t i = H; i < T; ++i )
459 bool sync_prepare_done =
false;
475 else if( !sync_prepare_done ) {
478 sync_prepare_done =
true;
501 task** victim_task_pool;
502 bool sync_prepare_done =
false;
504 victim_task_pool = victim_arena_slot->
task_pool;
510 if( sync_prepare_done )
521 else if( !sync_prepare_done ) {
524 sync_prepare_done =
true;
528 #if __TBB_STEALING_ABORT_ON_CONTENTION 529 if(!backoff.bounded_pause()) {
545 "not really locked victim's task pool?" );
546 return victim_task_pool;
550 task** victim_task_pool )
const {
551 __TBB_ASSERT( victim_arena_slot,
"empty victim arena slot pointer" );
564 __TBB_ASSERT( ref_count>=0,
"attempt to spawn task whose parent has a ref_count<0" );
565 __TBB_ASSERT( ref_count!=0,
"attempt to spawn task whose parent has a ref_count==0 (forgot to set_ref_count?)" );
571 "backwards compatibility to TBB 2.0 tasks is broken" );
572 #if __TBB_TASK_ISOLATION 574 t->
prefix().isolation = isolation;
584 #if __TBB_TASK_PRIORITY 596 #if __TBB_PREVIEW_CRITICAL_TASKS 597 bool generic_scheduler::handled_as_critical(
task& t ) {
600 #if __TBB_TASK_ISOLATION 606 my_arena->my_critical_task_stream.push(
621 if ( &
first->prefix().next == &next ) {
630 #if __TBB_PREVIEW_CRITICAL_TASKS 631 if( !handled_as_critical( *
first ) )
661 t_next = t->
prefix().next;
662 #if __TBB_PREVIEW_CRITICAL_TASKS 663 if( !handled_as_critical( *t ) )
669 if(
size_t num_tasks = tasks.
size() ) {
689 t->
prefix().parent = &dummy;
690 if( &t->
prefix().next==&next )
break;
691 #if __TBB_TASK_GROUP_CONTEXT 693 "all the root tasks in list must share the same context");
714 s->my_arena->enqueue_task(t, (intptr_t)prio,
s->my_random );
717 #if __TBB_TASK_PRIORITY 718 class auto_indicator :
no_copy {
719 volatile bool& my_indicator;
721 auto_indicator (
volatile bool& indicator ) : my_indicator(indicator) { my_indicator = true ;}
722 ~auto_indicator () { my_indicator =
false; }
730 #if __TBB_TASK_ISOLATION 732 bool tasks_omitted =
false;
733 while ( !t && T>H0 ) {
734 t =
get_task( --T, isolation, tasks_omitted );
735 if ( !tasks_omitted ) {
741 if ( t && tasks_omitted ) {
771 #if __TBB_TASK_ISOLATION 786 __TBB_ASSERT( my_offloaded_tasks,
"At least one task is expected to be already offloaded" );
793 auto_indicator indicator( my_pool_reshuffling_pending );
803 for (
size_t src = H0; src<T0; ++src ) {
807 intptr_t
p = priority( *t );
808 if (
p<*my_ref_top_priority ) {
809 offload_task( *t,
p );
825 #if __TBB_TASK_ISOLATION 836 task **link = &offloaded_tasks;
837 while (
task *t = *link ) {
838 task** next_ptr = &t->prefix().next_offloaded;
840 if ( priority(*t) >= top_priority ) {
841 tasks.push_back( t );
844 task* next = *next_ptr;
845 t->prefix().owner =
this;
853 if ( link == &offloaded_tasks ) {
854 offloaded_tasks = NULL;
856 offloaded_task_list_link = NULL;
863 offloaded_task_list_link = link;
866 size_t num_tasks = tasks.size();
879 if ( t ) --num_tasks;
887 uintptr_t reload_epoch = *my_ref_reload_epoch;
890 || my_local_reload_epoch - reload_epoch > uintptr_t(-1)/2,
891 "Reload epoch counter overflow?" );
892 if ( my_local_reload_epoch == reload_epoch )
895 intptr_t top_priority = effective_reference_priority();
897 task *t = reload_tasks( my_offloaded_tasks, my_offloaded_task_list_tail_link,
__TBB_ISOLATION_ARG( top_priority, isolation ) );
914 my_local_reload_epoch = reload_epoch;
919 #if __TBB_TASK_ISOLATION 926 || is_local_task_pool_quiescent(),
"Is it safe to get a task at position T?" );
928 task* result = my_arena_slot->task_pool_ptr[T];
929 __TBB_ASSERT( !is_poisoned( result ),
"The poisoned task is going to be processed" );
930 #if __TBB_TASK_ISOLATION 935 if ( !omit && !is_proxy( *result ) )
938 tasks_omitted =
true;
943 if ( !result || !is_proxy( *result ) )
947 task_proxy& tp = static_cast<task_proxy&>(*result);
951 __TBB_ASSERT( is_version_3_task( *t ),
"backwards compatibility with TBB 2.0 broken" );
953 my_innermost_running_task = t;
954 #if __TBB_TASK_ISOLATION 956 if ( !tasks_omitted )
960 t->note_affinity( my_affinity_id );
966 free_task<small_task>( tp );
967 #if __TBB_TASK_ISOLATION 969 my_arena_slot->task_pool_ptr[T] = NULL;
979 size_t H0 = (size_t)-1, T = T0;
981 bool task_pool_empty =
false;
990 if ( (intptr_t)H0 > (intptr_t)T ) {
994 && H0 == T + 1,
"victim/thief arbitration algorithm failure" );
997 task_pool_empty =
true;
999 }
else if ( H0 == T ) {
1002 task_pool_empty =
true;
1011 #if __TBB_TASK_ISOLATION 1012 result =
get_task( T, isolation, tasks_omitted );
1016 }
else if ( !tasks_omitted ) {
1024 }
while ( !result && !task_pool_empty );
1026 #if __TBB_TASK_ISOLATION 1027 if ( tasks_omitted ) {
1028 if ( task_pool_empty ) {
1091 free_task<no_cache_small_task>(tp);
1099 t->
prefix().owner =
this;
1110 task* result = NULL;
1113 bool tasks_omitted =
false;
1125 result = victim_pool[H-1];
1133 task_proxy& tp = *static_cast<task_proxy*>(result);
1141 tasks_omitted =
true;
1142 }
else if ( !tasks_omitted ) {
1148 }
while ( !result );
1152 ITT_NOTIFY( sync_acquired, (
void*)((uintptr_t)&victim_slot+
sizeof( uintptr_t )) );
1154 if ( tasks_omitted ) {
1156 victim_pool[H-1] = NULL;
1161 #if __TBB_PREFETCHING 1165 if ( tasks_omitted )
1171 #if __TBB_PREVIEW_CRITICAL_TASKS 1179 if(
my_arena->my_critical_task_stream.empty(0) )
1181 task* critical_task = NULL;
1184 #if __TBB_TASK_ISOLATION 1186 critical_task =
my_arena->my_critical_task_stream.pop_specific( 0, start_lane, isolation );
1192 return critical_task;
1205 free_task<no_cache_small_task>(*tp);
1212 __TBB_ASSERT ( my_arena_index < my_arena->my_num_slots,
"arena slot index is out-of-bound" );
1216 "entering arena without tasks to share" );
1238 s->my_arena_index = index;
1239 s->my_dummy_task->prefix().ref_count = 2;
1242 s->init_stack_info();
1253 task& t = *
s->my_dummy_task;
1255 t.
prefix().ref_count = 1;
1256 #if __TBB_TASK_GROUP_CONTEXT 1259 #if __TBB_FP_CONTEXT 1260 s->default_context()->capture_fp_settings();
1263 s->init_stack_info();
1264 context_state_propagation_mutex_type::scoped_lock
lock(the_context_state_propagation_mutex);
1265 s->my_market->my_masters.push_front( *
s );
1270 s->attach_arena( a, 0,
true );
1271 s->my_arena_slot->my_scheduler =
s;
1272 a->my_default_ctx =
s->default_context();
1274 __TBB_ASSERT(
s->my_arena_index == 0,
"Master thread must occupy the first slot in its arena" );
1278 s->my_market->register_master(
s->master_exec_resource );
1281 #if __TBB_ARENA_OBSERVER 1282 __TBB_ASSERT( !a || a->my_observers.empty(),
"Just created arena cannot have any observers associated with it" );
1284 #if __TBB_SCHEDULER_OBSERVER 1285 the_global_observer_list.notify_entry_observers(
s->my_last_global_observer,
false );
1292 __TBB_ASSERT( !
s.my_arena_slot,
"cleaning up attached worker" );
1293 #if __TBB_SCHEDULER_OBSERVER 1295 the_global_observer_list.notify_exit_observers(
s.my_last_global_observer,
true );
1321 #if __TBB_ARENA_OBSERVER 1323 a->my_observers.notify_exit_observers( my_last_local_observer,
false );
1325 #if __TBB_SCHEDULER_OBSERVER 1326 the_global_observer_list.notify_exit_observers( my_last_global_observer,
false );
1329 m->unregister_master( master_exec_resource );
1333 #if __TBB_STATISTICS 1338 #if __TBB_TASK_GROUP_CONTEXT 1340 default_context()->~task_group_context();
1343 context_state_propagation_mutex_type::scoped_lock
lock(the_context_state_propagation_mutex);
1353 return m->
release( a != NULL, blocking_terminate );
void deallocate_task(task &t)
Return task object to the memory allocator.
static const intptr_t mailbox_bit
static generic_scheduler * local_scheduler()
Obtain the thread-local instance of the TBB scheduler.
virtual ~scheduler()=0
Pure virtual destructor;.
generic_scheduler * allocate_scheduler(market &m)
unsigned short get()
Get a random number.
__TBB_atomic size_t head
Index of the first ready task in the deque.
size_t my_arena_index
Index of the arena slot the scheduler occupies now, or occupied last time.
void release_task_pool() const
Unlocks the local task pool.
static task * plugged_return_list()
Special value used to mark my_return_list as not taking any more entries.
static const intptr_t num_priority_levels
static void sign_off(generic_scheduler *s)
Unregister TBB scheduler instance from thread-local storage.
static void cleanup_worker(void *arg, bool worker)
Perform necessary cleanup when a worker thread finishes.
generic_scheduler(market &)
T __TBB_load_relaxed(const volatile T &location)
static market & global_market(bool is_public, unsigned max_num_workers=0, size_t stack_size=0)
Factory method creating new market object.
static const intptr_t location_mask
void leave_task_pool()
Leave the task pool.
virtual void local_wait_for_all(task &parent, task *child)=0
task * my_dummy_task
Fake root task created by slave threads.
void spawn_root_and_wait(task &first, task *&next) __TBB_override
For internal use only.
void __TBB_store_relaxed(volatile T &location, V value)
__TBB_atomic intptr_t my_small_task_count
Number of small tasks that have been allocated by this scheduler.
void Scheduler_OneTimeInitialization(bool itt_present)
Defined in scheduler.cpp.
mail_outbox & mailbox(affinity_id id)
Get reference to mailbox corresponding to given affinity_id.
void acquire_task_pool() const
Locks the local task pool.
void spin_wait_until_eq(const volatile T &location, const U value)
Spin UNTIL the value of the variable is equal to a given value.
atomic< unsigned > my_limit
The maximal number of currently busy slots.
#define __TBB_ISOLATION_EXPR(isolation)
void reset_task_pool_and_leave()
Resets head and tail indices to 0, and leaves task pool.
intptr_t reference_count
A reference count.
task_proxy * pop(__TBB_ISOLATION_EXPR(isolation_tag isolation))
Get next piece of mail, or NULL if mailbox is empty.
size_t prepare_task_pool(size_t n)
Makes sure that the task pool can accommodate at least n more elements.
task ** lock_task_pool(arena_slot *victim_arena_slot) const
Locks victim's task pool, and returns pointer to it. The pointer can be NULL.
void local_spawn(task *first, task *&next)
size_t worker_stack_size() const
Returns the requested stack size of worker threads.
task_group_context * context()
This method is deprecated and will be removed in the future.
#define ITT_SYNC_CREATE(obj, type, name)
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t new_size
bool cleanup_master(bool blocking_terminate)
Perform necessary cleanup when a master thread stops using TBB.
void const char const char int ITT_FORMAT __itt_group_sync s
#define __TBB_get_object_ref(class_name, member_name, member_addr)
Returns address of the object containing a member with the given name and address.
Memory prefix to a task object.
#define __TBB_FetchAndDecrementWrelease(P)
#define __TBB_cl_prefetch(p)
static void sign_on(generic_scheduler *s)
Register TBB scheduler instance in thread-local storage.
#define GATHER_STATISTIC(x)
void poison_pointer(T *__TBB_atomic &)
bool is_task_pool_published() const
context_list_node_t * my_next
const size_t task_prefix_reservation_size
Number of bytes reserved for a task prefix.
task **__TBB_atomic task_pool
state_type state() const
Current execution state.
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p sync_cancel
auto first(Container &c) -> decltype(begin(c))
scheduler_properties my_properties
affinity_id my_affinity_id
The mailbox id assigned to this scheduler.
void free_nonlocal_small_task(task &t)
Free a small task t that that was allocated by a different scheduler.
static bool is_shared(intptr_t tat)
True if the proxy is stored both in its sender's pool and in the destination mailbox.
task * my_free_list
Free list of small tasks that can be reused.
Used to form groups of tasks.
arena * my_arena
The arena that I own (if master) or am servicing at the moment (if worker)
task object is freshly allocated or recycled.
void * __TBB_get_bsp()
Retrieves the current RSE backing store pointer. IA64 specific.
task * prepare_for_spawning(task *t)
Checks if t is affinitized to another thread, and if so, bundles it as proxy.
internal::task_prefix & prefix(internal::version_tag *=NULL) const
Get reference to corresponding task_prefix.
void __TBB_EXPORTED_FUNC NFS_Free(void *)
Free memory allocated by NFS_Allocate.
uintptr_t my_stealing_threshold
Position in the call stack specifying its maximal filling when stealing is still allowed.
bool is_local_task_pool_quiescent() const
unsigned short affinity_id
An id as used for specifying affinity.
Base class for types that should not be copied or assigned.
static const kind_type dying
Vector that grows without reallocations, and stores items in the reverse order.
task * steal_task_from(__TBB_ISOLATION_ARG(arena_slot &victim_arena_slot, isolation_tag isolation))
Steal task from another scheduler's ready pool.
void publish_task_pool()
Used by workers to enter the task pool.
atomic< T > & as_atomic(T &t)
static const size_t quick_task_size
If sizeof(task) is <=quick_task_size, it is handled on a free list instead of malloc'd.
task * get_mailbox_task(__TBB_ISOLATION_EXPR(isolation_tag isolation))
Attempt to get a task from the mailbox.
static const intptr_t pool_bit
__TBB_atomic kind_type my_kind
Flavor of this context: bound or isolated.
generic_scheduler * my_scheduler
Scheduler of the thread attached to the slot.
task & allocate_task(size_t number_of_bytes, __TBB_CONTEXT_ARG(task *parent, task_group_context *context))
Allocate task object, either from the heap or a free list.
FastRandom my_random
Random number generator used for picking a random victim from which to steal.
int my_num_workers_requested
The number of workers that are currently requested from the resource manager.
task object is on free list, or is going to be put there, or was just taken off.
static bool is_set(generic_scheduler *s)
Used to check validity of the local scheduler TLS contents.
task * my_return_list
List of small tasks that have been returned to this scheduler by other schedulers.
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t int ITT_FORMAT d no args no args unsigned int ITT_FORMAT u const __itt_domain __itt_id ITT_FORMAT lu const __itt_domain __itt_id __itt_id parent
__TBB_atomic reference_count ref_count
Reference count used for synchronization.
static generic_scheduler * create_worker(market &m, size_t index)
Initialize a scheduler for a worker thread.
#define __TBB_ASSERT(predicate, comment)
No-op version of __TBB_ASSERT.
Class that implements exponential backoff.
void unlock_task_pool(arena_slot *victim_arena_slot, task **victim_task_pool) const
Unlocks victim's task pool.
void on_thread_leaving()
Notification that worker or master leaves its arena.
bool is_quiescent_local_task_pool_reset() const
void assert_task_valid(const task *)
void advertise_new_work()
If necessary, raise a flag that there is new job in arena.
void spawn(task &first, task *&next) __TBB_override
For internal use only.
void copy_memory(T *dst) const
Copies the contents of the vector into the dst array.
task * get_task(__TBB_ISOLATION_EXPR(isolation_tag isolation))
Get a task from the local pool.
void allocate_task_pool(size_t n)
static bool is_version_3_task(task &t)
#define __TBB_control_consistency_helper()
bool outermost
Indicates that a scheduler is on outermost level.
void free_scheduler()
Destroy and deallocate this scheduler object.
task **__TBB_atomic task_pool_ptr
static const size_t min_task_pool_size
static const kind_type detached
#define __TBB_CONTEXT_ARG(arg1, context)
void push_back(const T &val)
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p sync_releasing
Base class for user-defined tasks.
void local_spawn_root_and_wait(task *first, task *&next)
__TBB_atomic size_t tail
Index of the element following the last ready task in the deque.
Work stealing task scheduler.
void __TBB_store_with_release(volatile T &location, V value)
void init_stack_info()
Sets up the data necessary for the stealing limiting heuristics.
#define __TBB_cl_evict(p)
bool is_quiescent_local_task_pool_empty() const
#define ITT_NOTIFY(name, obj)
void assert_task_pool_valid() const
void commit_spawned_tasks(size_t new_tail)
Makes newly spawned tasks visible to thieves.
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task * task
bool release(bool is_public, bool blocking_terminate)
Decrements market's refcount and destroys it in the end.
static const unsigned ref_external
Reference increment values for externals and workers.
bool is_critical(task &t)
Smart holder for the empty task class with automatic destruction.
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void * lock
void fill_with_canary_pattern(size_t, size_t)
market * my_market
The market I am in.
Set if ref_count might be changed by another thread. Used for debugging.
intptr_t isolation_tag
A tag for task isolation.
task * parent() const
task on whose behalf this task is working, or NULL if this is a root.
A scheduler with a customized evaluation loop.
static generic_scheduler * create_master(arena *a)
Initialize a scheduler for a master thread.
arena_slot * my_arena_slot
Pointer to the slot in the arena we own at the moment.
uintptr_t my_version_and_traits
Version for run-time checks and behavioral traits of the context.
mail_outbox * outbox
Mailbox to which this was mailed.
void enqueue(task &, void *reserved) __TBB_override
For internal use only.
#define __TBB_ISOLATION_ARG(arg1, isolation)
const isolation_tag no_isolation
static bool is_proxy(const task &t)
True if t is a task_proxy.
task * extract_task()
Returns a pointer to the encapsulated task or NULL, and frees proxy if necessary.
generic_scheduler *(* AllocateSchedulerPtr)(market &)
Pointer to the scheduler factory function.
virtual void __TBB_EXPORTED_METHOD note_affinity(affinity_id id)
Invoked by scheduler to notify task that it ran on unexpected thread.
void atomic_fence()
Sequentially consistent full memory fence.
task is in ready pool, or is going to be put there, or was just taken off.
T max(const T &val1, const T &val2)
Utility template function returning greater of the two values.
void const char const char int ITT_FORMAT __itt_group_sync p
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t int ITT_FORMAT d no args no args unsigned int ITT_FORMAT u const __itt_domain __itt_id ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain __itt_id ITT_FORMAT p const __itt_domain __itt_id __itt_timestamp __itt_timestamp end
bool is_worker() const
True if running on a worker thread, false otherwise.
task * steal_task(__TBB_ISOLATION_EXPR(isolation_tag isolation))
Attempts to steal a task from a randomly chosen thread/scheduler.
void push(task_proxy *t)
Push task_proxy onto the mailbox queue of another thread.
static const kind_type binding_required
size_t my_task_pool_size
Capacity of the primary task pool (number of elements - pointers to task).
void commit_relocated_tasks(size_t new_tail)
Makes relocated tasks visible to thieves and releases the local task pool.
Represents acquisition of a mutex.
task * my_innermost_running_task
Innermost task whose task::execute() is running. A dummy task on the outermost level.
void pause()
Pause for a while.
Set if the task has been stolen.
bool recipient_is_idle()
True if thread that owns this mailbox is looking for work.
void *__TBB_EXPORTED_FUNC NFS_Allocate(size_t n_element, size_t element_size, void *hint)
Allocate memory on cache/sector line boundary.