35 extern generic_scheduler* (*AllocateSchedulerPtr)( market&, bool );
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) 89 , my_co_context(m.worker_stack_size(), genuine ? NULL : this)
91 , my_small_task_count(1)
93 , my_cilk_state(cs_none)
100 #if __TBB_PREVIEW_CRITICAL_TASKS 103 #if __TBB_PREVIEW_RESUMABLE_TASKS 105 my_current_is_recalled = NULL;
106 my_post_resume_action = PRA_NONE;
107 my_post_resume_arg = NULL;
113 #if __TBB_TASK_PRIORITY 114 my_ref_top_priority = &m.my_global_top_priority;
115 my_ref_reload_epoch = &m.my_global_reload_epoch;
117 #if __TBB_TASK_GROUP_CONTEXT 119 my_context_state_propagation_epoch = the_context_state_propagation_epoch;
120 my_context_list_head.my_prev = &my_context_list_head;
121 my_context_list_head.my_next = &my_context_list_head;
122 ITT_SYNC_CREATE(&my_context_list_mutex, SyncType_Scheduler, SyncObj_ContextsList);
128 #if _MSC_VER && !defined(__INTEL_COMPILER) 130 #endif // warning 4355 is back 132 #if TBB_USE_ASSERT > 1 143 for (
size_t i = 0; i < H; ++i )
144 __TBB_ASSERT( tp[i] == poisoned_ptr,
"Task pool corrupted" );
145 for (
size_t i = H; i < T; ++i ) {
149 tp[i]->prefix().extra_state ==
es_task_proxy,
"task in the deque has invalid state" );
153 __TBB_ASSERT( tp[i] == poisoned_ptr,
"Task pool corrupted" );
164 #if defined(_MSC_VER)&&_MSC_VER<1400 && !_WIN64 166 __asm mov eax, fs:[0x18]
169 NT_TIB *pteb = (NT_TIB*)NtCurrentTeb();
171 __TBB_ASSERT( &pteb < pteb->StackBase && &pteb > pteb->StackLimit,
"invalid stack info in TEB" );
172 __TBB_ASSERT( stack_size >0,
"stack_size not initialized?" );
190 void *stack_base = &stack_size;
191 #if __linux__ && !__bg__ 195 size_t np_stack_size = 0;
197 void *stack_limit = NULL;
199 #if __TBB_PREVIEW_RESUMABLE_TASKS 201 stack_limit = my_co_context.get_stack_limit();
202 __TBB_ASSERT( (uintptr_t)stack_base > (uintptr_t)stack_limit,
"stack size must be positive" );
204 stack_size = size_t((
char*)stack_base - (
char*)stack_limit);
208 pthread_attr_t np_attr_stack;
209 if( !stack_limit && 0 == pthread_getattr_np(pthread_self(), &np_attr_stack) ) {
210 if ( 0 == pthread_attr_getstack(&np_attr_stack, &stack_limit, &np_stack_size) ) {
212 pthread_attr_t attr_stack;
213 if ( 0 == pthread_attr_init(&attr_stack) ) {
214 if ( 0 == pthread_attr_getstacksize(&attr_stack, &stack_size) ) {
215 if ( np_stack_size < stack_size ) {
218 rsb_base = stack_limit;
219 stack_size = np_stack_size/2;
221 stack_limit = (
char*)stack_limit + stack_size;
227 pthread_attr_destroy(&attr_stack);
230 my_rsb_stealing_threshold = (uintptr_t)((
char*)rsb_base + stack_size/2);
235 stack_size = size_t((
char*)stack_base - (
char*)stack_limit);
237 pthread_attr_destroy(&np_attr_stack);
240 __TBB_ASSERT( stack_size>0,
"stack size must be positive" );
245 #if __TBB_TASK_GROUP_CONTEXT 251 void generic_scheduler::cleanup_local_context_list () {
253 bool wait_for_concurrent_destroyers_to_leave =
false;
254 uintptr_t local_count_snapshot = my_context_state_propagation_epoch;
255 my_local_ctx_list_update.store<
relaxed>(1);
263 if ( my_nonlocal_ctx_list_update.load<
relaxed>() || local_count_snapshot != the_context_state_propagation_epoch )
264 lock.acquire(my_context_list_mutex);
268 while ( node != &my_context_list_head ) {
275 wait_for_concurrent_destroyers_to_leave =
true;
278 my_local_ctx_list_update.store<
release>(0);
280 if ( wait_for_concurrent_destroyers_to_leave )
296 #if __TBB_TASK_PRIORITY 299 #if __TBB_PREVIEW_CRITICAL_TASKS 302 #if __TBB_TASK_GROUP_CONTEXT 303 cleanup_local_context_list();
305 free_task<small_local_task>( *my_dummy_task );
307 #if __TBB_HOARD_NONLOCAL_TASKS 308 while(
task* t = my_nonlocal_free_list ) {
310 my_nonlocal_free_list =
p.next;
327 #if __TBB_COUNT_TASK_NODES 328 my_market->update_task_node_count( my_task_node_count );
342 #if __TBB_HOARD_NONLOCAL_TASKS 343 if( (t = my_nonlocal_free_list) ) {
356 __TBB_ASSERT( t,
"another thread emptied the my_return_list" );
362 #if __TBB_COUNT_TASK_NODES 363 ++my_task_node_count;
369 #if __TBB_PREFETCHING 372 #if __TBB_HOARD_NONLOCAL_TASKS 388 #if __TBB_COUNT_TASK_NODES 389 ++my_task_node_count;
394 #if __TBB_TASK_GROUP_CONTEXT 417 task* old =
s.my_return_list;
423 if(
as_atomic(
s.my_return_list).compare_and_swap(&t, old )==old ) {
424 #if __TBB_PREFETCHING 441 if ( T + num_tasks <= my_arena_slot->my_task_pool_size )
459 for (
size_t i = H; i < T; ++i )
468 if ( new_size < 2 * my_arena_slot->my_task_pool_size )
474 for (
size_t i = H; i < T; ++i )
496 bool sync_prepare_done =
false;
512 else if( !sync_prepare_done ) {
515 sync_prepare_done =
true;
538 task** victim_task_pool;
539 bool sync_prepare_done =
false;
541 victim_task_pool = victim_arena_slot->
task_pool;
547 if( sync_prepare_done )
558 else if( !sync_prepare_done ) {
561 sync_prepare_done =
true;
565 #if __TBB_STEALING_ABORT_ON_CONTENTION 566 if(!backoff.bounded_pause()) {
582 "not really locked victim's task pool?" );
583 return victim_task_pool;
587 task** victim_task_pool )
const {
588 __TBB_ASSERT( victim_arena_slot,
"empty victim arena slot pointer" );
601 __TBB_ASSERT( ref_count>=0,
"attempt to spawn task whose parent has a ref_count<0" );
602 __TBB_ASSERT( ref_count!=0,
"attempt to spawn task whose parent has a ref_count==0 (forgot to set_ref_count?)" );
608 "backwards compatibility to TBB 2.0 tasks is broken" );
609 #if __TBB_TASK_ISOLATION 621 #if __TBB_TASK_PRIORITY 630 free_task<small_task>(proxy);
635 #if __TBB_PREVIEW_CRITICAL_TASKS 636 bool generic_scheduler::handled_as_critical(
task& t ) {
639 #if __TBB_TASK_ISOLATION 645 my_arena->my_critical_task_stream.push(
660 if ( &
first->prefix().next == &next ) {
669 #if __TBB_PREVIEW_CRITICAL_TASKS 670 if( !handled_as_critical( *
first ) )
701 #if __TBB_PREVIEW_CRITICAL_TASKS 702 if( !handled_as_critical( *t ) )
708 if(
size_t num_tasks = tasks.
size() ) {
730 #if __TBB_TASK_GROUP_CONTEXT 732 "all the root tasks in list must share the same context");
753 s->my_arena->enqueue_task(t, (intptr_t)prio,
s->my_random );
756 #if __TBB_TASK_PRIORITY 757 class auto_indicator :
no_copy {
758 volatile bool& my_indicator;
760 auto_indicator (
volatile bool& indicator ) : my_indicator(indicator) { my_indicator = true ;}
761 ~auto_indicator () { my_indicator =
false; }
769 #if __TBB_TASK_ISOLATION 771 bool tasks_omitted =
false;
772 while ( !t && T>H0 ) {
773 t =
get_task( --T, isolation, tasks_omitted );
774 if ( !tasks_omitted ) {
780 if ( t && tasks_omitted ) {
810 #if __TBB_TASK_ISOLATION 825 __TBB_ASSERT( my_offloaded_tasks,
"At least one task is expected to be already offloaded" );
832 auto_indicator indicator( my_pool_reshuffling_pending );
842 for (
size_t src = H0; src<T0; ++src ) {
846 intptr_t
p = priority( *t );
847 if (
p<*my_ref_top_priority ) {
848 offload_task( *t,
p );
864 #if __TBB_TASK_ISOLATION 875 task **link = &offloaded_tasks;
876 while (
task *t = *link ) {
877 task** next_ptr = &t->prefix().next_offloaded;
879 if ( priority(*t) >= top_priority ) {
880 tasks.push_back( t );
883 task* next = *next_ptr;
884 t->prefix().owner =
this;
892 if ( link == &offloaded_tasks ) {
893 offloaded_tasks = NULL;
895 offloaded_task_list_link = NULL;
902 offloaded_task_list_link = link;
905 size_t num_tasks = tasks.size();
918 if ( t ) --num_tasks;
926 uintptr_t reload_epoch = *my_ref_reload_epoch;
929 || my_local_reload_epoch - reload_epoch > uintptr_t(-1)/2,
930 "Reload epoch counter overflow?" );
931 if ( my_local_reload_epoch == reload_epoch )
934 intptr_t top_priority = effective_reference_priority();
936 task *t = reload_tasks( my_offloaded_tasks, my_offloaded_task_list_tail_link,
__TBB_ISOLATION_ARG( top_priority, isolation ) );
953 my_local_reload_epoch = reload_epoch;
958 #if __TBB_TASK_ISOLATION 965 || is_local_task_pool_quiescent(),
"Is it safe to get a task at position T?" );
967 task* result = my_arena_slot->task_pool_ptr[T];
968 __TBB_ASSERT( !is_poisoned( result ),
"The poisoned task is going to be processed" );
969 #if __TBB_TASK_ISOLATION 974 if ( !omit && !is_proxy( *result ) )
977 tasks_omitted =
true;
982 if ( !result || !is_proxy( *result ) )
990 __TBB_ASSERT( is_version_3_task( *t ),
"backwards compatibility with TBB 2.0 broken" );
991 my_innermost_running_task = t;
992 #if __TBB_TASK_ISOLATION 994 if ( !tasks_omitted )
998 t->note_affinity( my_affinity_id );
1004 free_task<small_task>( tp );
1005 #if __TBB_TASK_ISOLATION 1006 if ( tasks_omitted )
1007 my_arena_slot->task_pool_ptr[T] = NULL;
1017 size_t H0 = (size_t)-1, T = T0;
1018 task* result = NULL;
1019 bool task_pool_empty =
false;
1028 if ( (intptr_t)H0 > (intptr_t)T ) {
1032 && H0 == T + 1,
"victim/thief arbitration algorithm failure" );
1035 task_pool_empty =
true;
1037 }
else if ( H0 == T ) {
1040 task_pool_empty =
true;
1049 #if __TBB_TASK_ISOLATION 1050 result =
get_task( T, isolation, tasks_omitted );
1054 }
else if ( !tasks_omitted ) {
1062 }
while ( !result && !task_pool_empty );
1064 #if __TBB_TASK_ISOLATION 1065 if ( tasks_omitted ) {
1066 if ( task_pool_empty ) {
1129 free_task<no_cache_small_task>(tp);
1148 task* result = NULL;
1151 bool tasks_omitted =
false;
1163 result = victim_pool[H-1];
1179 tasks_omitted =
true;
1180 }
else if ( !tasks_omitted ) {
1186 }
while ( !result );
1190 ITT_NOTIFY( sync_acquired, (
void*)((uintptr_t)&victim_slot+
sizeof( uintptr_t )) );
1192 if ( tasks_omitted ) {
1194 victim_pool[H-1] = NULL;
1199 #if __TBB_PREFETCHING 1203 if ( tasks_omitted )
1209 #if __TBB_PREVIEW_CRITICAL_TASKS 1217 if(
my_arena->my_critical_task_stream.empty(0) )
1219 task* critical_task = NULL;
1222 #if __TBB_TASK_ISOLATION 1224 critical_task =
my_arena->my_critical_task_stream.pop_specific( 0, start_lane, isolation );
1230 return critical_task;
1243 free_task<no_cache_small_task>(*tp);
1250 __TBB_ASSERT ( my_arena_index < my_arena->my_num_slots,
"arena slot index is out-of-bound" );
1254 "entering arena without tasks to share" );
1275 __TBB_ASSERT(!genuine || index,
"workers should have index > 0");
1276 s->my_arena_index = index;
1277 s->my_dummy_task->prefix().ref_count = 2;
1281 s->init_stack_info();
1292 task& t = *
s->my_dummy_task;
1295 #if __TBB_TASK_GROUP_CONTEXT 1298 #if __TBB_FP_CONTEXT 1299 s->default_context()->capture_fp_settings();
1302 s->init_stack_info();
1303 context_state_propagation_mutex_type::scoped_lock
lock(the_context_state_propagation_mutex);
1304 s->my_market->my_masters.push_front( *
s );
1309 s->attach_arena( a, 0,
true );
1310 s->my_arena_slot->my_scheduler =
s;
1311 #if __TBB_TASK_GROUP_CONTEXT 1312 a->my_default_ctx =
s->default_context();
1315 __TBB_ASSERT(
s->my_arena_index == 0,
"Master thread must occupy the first slot in its arena" );
1319 s->my_market->register_master(
s->master_exec_resource );
1322 #if __TBB_ARENA_OBSERVER 1323 __TBB_ASSERT( !a || a->my_observers.empty(),
"Just created arena cannot have any observers associated with it" );
1325 #if __TBB_SCHEDULER_OBSERVER 1326 the_global_observer_list.notify_entry_observers(
s->my_last_global_observer,
false );
1333 __TBB_ASSERT( !
s.my_arena_slot,
"cleaning up attached worker" );
1334 #if __TBB_SCHEDULER_OBSERVER 1336 the_global_observer_list.notify_exit_observers(
s.my_last_global_observer,
true );
1338 s.cleanup_scheduler();
1364 #if __TBB_ARENA_OBSERVER 1366 a->my_observers.notify_exit_observers( my_last_local_observer,
false );
1368 #if __TBB_SCHEDULER_OBSERVER 1369 the_global_observer_list.notify_exit_observers( my_last_global_observer,
false );
1372 m->unregister_master( master_exec_resource );
1376 #if __TBB_STATISTICS 1381 #if __TBB_TASK_GROUP_CONTEXT 1383 default_context()->~task_group_context();
1386 context_state_propagation_mutex_type::scoped_lock
lock(the_context_state_propagation_mutex);
1396 return m->
release( a != NULL, blocking_terminate );
void * __TBB_get_bsp()
Retrieves the current RSE backing store pointer. IA64 specific.
#define GATHER_STATISTIC(x)
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 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
void set_ref_count(int count)
Set reference count.
A scheduler with a customized evaluation loop.
const isolation_tag no_isolation
const size_t task_prefix_reservation_size
Number of bytes reserved for a task prefix.
bool is_worker() const
True if running on a worker thread, false otherwise.
mail_outbox * outbox
Mailbox to which this was mailed.
generic_scheduler *(* AllocateSchedulerPtr)(market &, bool)
Pointer to the scheduler factory function.
static const intptr_t num_priority_levels
task * steal_task(__TBB_ISOLATION_EXPR(isolation_tag isolation))
Attempts to steal a task from a randomly chosen thread/scheduler.
#define __TBB_ISOLATION_EXPR(isolation)
tbb::task * next
"next" field for list of task
task_group_context * context
Shared context that is used to communicate asynchronous state changes.
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
void commit_relocated_tasks(size_t new_tail)
Makes relocated tasks visible to thieves and releases the local task pool.
void *__TBB_EXPORTED_FUNC NFS_Allocate(size_t n_element, size_t element_size, void *hint)
Allocate memory on cache/sector line boundary.
Vector that grows without reallocations, and stores items in the reverse order.
isolation_tag isolation
The tag used for task isolation.
task * my_innermost_running_task
Innermost task whose task::execute() is running. A dummy task on the outermost level.
arena * my_arena
The arena that I own (if master) or am servicing at the moment (if worker)
__TBB_atomic reference_count ref_count
Reference count used for synchronization.
task * prepare_for_spawning(task *t)
Checks if t is affinitized to another thread, and if so, bundles it as proxy.
unsigned char extra_state
Miscellaneous state that is not directly visible to users, stored as a byte for compactness.
uintptr_t my_stealing_threshold
Position in the call stack specifying its maximal filling when stealing is still allowed.
unsigned char state
A task::state_type, stored as a byte for compactness.
int my_num_workers_requested
The number of workers that are currently requested from the resource manager.
Represents acquisition of a mutex.
void publish_task_pool()
Used by workers to enter the task pool.
task object is freshly allocated or recycled.
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.
static void sign_on(generic_scheduler *s)
Register TBB scheduler instance in thread-local storage.
static const unsigned ref_external
Reference increment values for externals and workers.
Base class for types that should not be copied or assigned.
virtual void local_wait_for_all(task &parent, task *child)=0
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.
__TBB_atomic size_t tail
Index of the element following the last ready task in the deque.
task * my_dummy_task
Fake root task created by slave threads.
#define __TBB_CONTEXT_ARG(arg1, context)
#define __TBB_PREVIEW_RESUMABLE_TASKS
task * parent() const
task on whose behalf this task is working, or NULL if this is a root.
uintptr_t my_version_and_traits
Version for run-time checks and behavioral traits of the context.
task * my_return_list
List of small tasks that have been returned to this scheduler by other schedulers.
__TBB_atomic intptr_t my_small_task_count
Number of small tasks that have been allocated by this scheduler.
scheduler * origin
The scheduler that allocated the task, or NULL if the task is big.
#define __TBB_cl_prefetch(p)
void assert_task_valid(const task *)
void reset_task_pool_and_leave()
Resets head and tail indices to 0, and leaves task pool.
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
void __TBB_store_relaxed(volatile T &location, V value)
void unlock_task_pool(arena_slot *victim_arena_slot, task **victim_task_pool) const
Unlocks victim's task pool.
void destroy()
Destroy and deallocate this scheduler object.
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 spin_wait_until_eq(const volatile T &location, const U value)
Spin UNTIL the value of the variable is equal to a given value.
bool is_quiescent_local_task_pool_reset() const
static const kind_type binding_required
void spawn(task &first, task *&next) __TBB_override
For internal use only.
void local_spawn(task *first, task *&next)
static const intptr_t pool_bit
task **__TBB_atomic task_pool
task * get_task(__TBB_ISOLATION_EXPR(isolation_tag isolation))
Get a task from the local pool.
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
static generic_scheduler * local_scheduler()
Obtain the thread-local instance of the TBB scheduler.
static bool is_version_3_task(task &t)
void suppress_unused_warning(const T1 &)
Utility template function to prevent "unused" warnings by various compilers.
void __TBB_store_with_release(volatile T &location, V value)
static bool is_set(generic_scheduler *s)
Used to check validity of the local scheduler TLS contents.
void cleanup_scheduler()
Cleans up this scheduler (the scheduler might be destroyed).
task object is on free list, or is going to be put there, or was just taken off.
Smart holder for the empty task class with automatic destruction.
Base class for user-defined tasks.
void init_stack_info()
Sets up the data necessary for the stealing limiting heuristics.
bool push(task_proxy *t)
Push task_proxy onto the mailbox queue of another thread.
static generic_scheduler * create_worker(market &m, size_t index, bool geniune)
Initialize a scheduler for a worker thread.
bool is_quiescent_local_task_pool_empty() const
bool is_task_pool_published() const
static market & global_market(bool is_public, unsigned max_num_workers=0, size_t stack_size=0)
Factory method creating new market object.
void commit_spawned_tasks(size_t new_tail)
Makes newly spawned tasks visible to thieves.
static const intptr_t mailbox_bit
void copy_memory(T *dst) const
Copies the contents of the vector into the dst array.
scheduler_properties my_properties
affinity_id my_affinity_id
The mailbox id assigned to this scheduler.
void allocate_task_pool(size_t n)
void free_nonlocal_small_task(task &t)
Free a small task t that that was allocated by a different scheduler.
intptr_t isolation_tag
A tag for task isolation.
__TBB_atomic size_t head
Index of the first ready task in the deque.
__TBB_atomic kind_type my_kind
Flavor of this context: bound or isolated.
task * my_free_list
Free list of small tasks that can be reused.
Memory prefix to a task object.
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
market * my_market
The market I am in.
#define __TBB_control_consistency_helper()
void const char const char int ITT_FORMAT __itt_group_sync p
mail_outbox & mailbox(affinity_id id)
Get reference to mailbox corresponding to given affinity_id.
arena_slot * my_arena_slot
Pointer to the slot in the arena we own at the moment.
void enqueue(task &, void *reserved) __TBB_override
For internal use only.
#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.
bool is_local_task_pool_quiescent() const
static bool is_proxy(const task &t)
True if t is a task_proxy.
unsigned short affinity_id
An id as used for specifying affinity.
task * steal_task_from(__TBB_ISOLATION_ARG(arena_slot &victim_arena_slot, isolation_tag isolation))
Steal task from another scheduler's ready pool.
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
task * get_mailbox_task(__TBB_ISOLATION_EXPR(isolation_tag isolation))
Attempt to get a task from the mailbox.
virtual ~scheduler()=0
Pure virtual destructor;.
FastRandom my_random
Random number generator used for picking a random victim from which to steal.
void __TBB_EXPORTED_FUNC NFS_Free(void *)
Free memory allocated by NFS_Allocate.
#define __TBB_ISOLATION_ARG(arg1, isolation)
task **__TBB_atomic task_pool_ptr
Task pool of the scheduler that owns this slot.
generic_scheduler(market &, bool)
static const kind_type detached
void fill_with_canary_pattern(size_t, size_t)
tbb::task * parent
The task whose reference count includes me.
void atomic_fence()
Sequentially consistent full memory fence.
auto first(Container &c) -> decltype(begin(c))
task is in ready pool, or is going to be put there, or was just taken off.
task * extract_task()
Returns a pointer to the encapsulated task or NULL, and frees proxy if necessary. ...
static void sign_off(generic_scheduler *s)
Unregister TBB scheduler instance from thread-local storage.
size_t my_task_pool_size
Capacity of the primary task pool (number of elements - pointers to task).
#define __TBB_FetchAndDecrementWrelease(P)
void const char const char int ITT_FORMAT __itt_group_sync s
bool outermost
Indicates that a scheduler is on outermost level.
bool recipient_is_idle()
True if thread that owns this mailbox is looking for work.
static const size_t min_task_pool_size
context_list_node_t * my_next
void deallocate_task(task &t)
Return task object to the memory allocator.
#define ITT_SYNC_CREATE(obj, type, name)
void pause()
Pause for a while.
Used to form groups of tasks.
Work stealing task scheduler.
generic_scheduler * my_scheduler
Scheduler of the thread attached to the slot.
void local_spawn_root_and_wait(task *first, task *&next)
T max(const T &val1, const T &val2)
Utility template function returning greater of the two values.
#define __TBB_ASSERT(predicate, comment)
No-op version of __TBB_ASSERT.
virtual void __TBB_EXPORTED_METHOD note_affinity(affinity_id id)
Invoked by scheduler to notify task that it ran on unexpected thread.
#define __TBB_cl_evict(p)
scheduler * owner
Obsolete. The scheduler that owns the task.
size_t my_arena_index
Index of the arena slot the scheduler occupies now, or occupied last time.
#define ITT_NOTIFY(name, obj)
internal::task_prefix & prefix(internal::version_tag *=NULL) const
Get reference to corresponding task_prefix.
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_group_context * context()
This method is deprecated and will be removed in the future.
T __TBB_load_relaxed(const volatile T &location)
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.
state_type state() const
Current execution state.
Class that implements exponential backoff.
atomic< T > & as_atomic(T &t)
void advertise_new_work()
If necessary, raise a flag that there is new job in arena.
static void cleanup_worker(void *arg, bool worker)
Perform necessary cleanup when a worker thread finishes.
void poison_pointer(T *__TBB_atomic &)
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 leave_task_pool()
Leave the task pool.
void assert_task_pool_valid() const
bool release(bool is_public, bool blocking_terminate)
Decrements market's refcount and destroys it in the end.
void Scheduler_OneTimeInitialization(bool itt_present)
Defined in scheduler.cpp.
Set if the task has been stolen.
void spawn_root_and_wait(task &first, task *&next) __TBB_override
For internal use only.
Set if ref_count might be changed by another thread. Used for debugging.
intptr_t reference_count
A reference count.
void push_back(const T &val)
bool is_critical(task &t)
void acquire_task_pool() const
Locks the local task pool.
unsigned short get()
Get a random number.
task_proxy * pop(__TBB_ISOLATION_EXPR(isolation_tag isolation))
Get next piece of mail, or NULL if mailbox is empty.
static const kind_type dying
size_t prepare_task_pool(size_t n)
Makes sure that the task pool can accommodate at least n more elements.
void on_thread_leaving()
Notification that worker or master leaves its arena.
static generic_scheduler * create_master(arena *a)
Initialize a scheduler for a master thread.
generic_scheduler * allocate_scheduler(market &m, bool genuine)
size_t worker_stack_size() const
Returns the requested stack size of worker threads.
atomic< unsigned > my_limit
The maximal number of currently busy slots.
static const intptr_t location_mask