Intel® oneAPI Threading Building Blocks Developer Guide and API Reference
ID
772616
Date
3/31/2025
Public
Visible to Intel only — GUID: GUID-32C669FA-EB00-480C-9D1D-D9AB62BCE6BF
Package Contents
Parallelizing Simple Loops
Parallelizing Complex Loops
Parallelizing Data Flow and Dependence Graphs
Work Isolation
Exceptions and Cancellation
Containers
Mutual Exclusion
Timing
Memory Allocation
The Task Scheduler
Design Patterns
Migrating from Threading Building Blocks (TBB)
Constrained APIs
Appendix A Costs of Time Slicing
Appendix B Mixing With Other Threading Packages
References
parallel_for_each Body semantics and requirements
parallel_sort ranges interface extension
TBB_malloc_replacement_log Function
Parallel Reduction for rvalues
Type-specified message keys for join_node
Scalable Memory Pools
Helper Functions for Expressing Graphs
concurrent_lru_cache
task_group extensions
The customizing mutex type for concurrent_hash_map
Waiting for Single Messages in Flow Graph
parallel_phase Interface for Task Arena
Deduction Guides for blocked_nd_range
Visible to Intel only — GUID: GUID-32C669FA-EB00-480C-9D1D-D9AB62BCE6BF
Constructors for Flow Graph nodes
NOTE:
To enable this feature, define the TBB_PREVIEW_FLOW_GRAPH_FEATURES macro to 1.
Description
The “Helper Functions for Expressing Graphs” feature adds a set of new constructors that can be used to construct a node that follows or precedes a set of nodes.
Where possible, the constructors support Class Template Argument Deduction (since C++17).
API
Header
#include <oneapi/tbb/flow_graph.h>
Syntax
// continue_node continue_node(follows(...), Body body, Policy = Policy()); continue_node(precedes(...), Body body, Policy = Policy()); continue_node(follows(...), int number_of_predecessors, Body body, Policy = Policy()); continue_node(precedes(...), int number_of_predecessors, Body body, Policy = Policy()); // function_node function_node(follows(...), std::size_t concurrency, Policy = Policy()); function_node(precedes(...), std::size_t concurrency, Policy = Policy()); // input_node input_node(precedes(...), body); // multifunction_node multifunction_node(follows(...), std::size_t concurrency, Body body); multifunction_node(precedes(...), std::size_t concurrency, Body body); // async_node async_node(follows(...), std::size_t concurrency, Body body); async_node(precedes(...), std::size_t concurrency, Body body); // overwrite_node explicit overwrite_node(follows(...)); explicit overwrite_node(precedes(...)); // write_once_node explicit write_once_node(follows(...)); explicit write_once_node(precedes(...)); // buffer_node explicit buffer_node(follows(...)); explicit buffer_node(precedes(...)); // queue_node explicit queue_node(follows(...)); explicit queue_node(precedes(...)); // priority_queue_node explicit priority_queue_node(follows(...), const Compare& comp = Compare()); explicit priority_queue_node(precedes(...), const Compare& compare = Compare()); // sequencer_node sequencer_node(follows(...), const Sequencer& s); sequencer_node(precedes(...), const Sequencer& s); // limiter_node limiter_node(follows(...), std::size_t threshold); limiter_node(precedes(...), std::size_t threshold); // broadcast_node explicit broadcast_node(follows(...)); explicit broadcast_node(precedes(...)); // join_node explicit join_node(follows(...), Policy = Policy()); explicit join_node(precedes(...), Policy = Policy()); // split_node explicit split_node(follows(...)); explicit split_node(precedes(...)); // indexer_node indexer_node(follows(...)); indexer_node(precedes(...));