Visible to Intel only — GUID: GUID-64B543CD-D8F0-420B-B826-D91DFC9517E2
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
Invoke a Callable Object
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
Visible to Intel only — GUID: GUID-64B543CD-D8F0-420B-B826-D91DFC9517E2
follows and precedes function templates
NOTE:
To enable this feature, define the TBB_PREVIEW_FLOW_GRAPH_FEATURES macro to 1.
The follows and precedes helper functions aid in expressing dependencies between nodes when building oneTBB flow graphs. These helper functions can only be used while constructing the node.
Description
The follows helper function specifies that the node being constructed is the successor of the set of nodes passed as an argument.
The precedes helper function specifies that the node being constructed is the predecessor of the set of nodes passed as an argument.
Functions follows and precedes are meant to replace the graph argument, which is passed as the first argument to the constructor of the node. The graph argument for the node being constructed is obtained either from the specified node set or the sequence of nodes passed to follows or precedes.
If the nodes passed to follows or precedes belong to different graphs, the behavior is undefined.
API
Header
#include <oneapi/tbb/flow_graph.h>
Syntax
// node_set is an exposition-only name for the type returned from make_node_set function template <typename NodeType, typename... NodeTypes> /*unspecified*/ follows( node_set<NodeType, NodeTypes...>& set ); template <typename NodeType, typename... NodeTypes> /*unspecified*/ follows( NodeType& node, NodeTypes&... nodes ); template <typename NodeType, typename... NodeTypes> /*unspecified*/ precedes( node_set<NodeType, NodeTypes...>& set ); template <typename NodeType, typename... NodeTypes> /*unspecified*/ precedes( NodeType& node, NodeTypes&... nodes );
Input Parameters
Either a set or a sequence of nodes can be used as arguments for follows and precedes. The following expressions are equivalent:
auto handlers = make_node_set(n1, n2, n3); broadcast_node<int> input(precedes(handlers));
broadcast_node<int> input(precedes(n1, n2, n3));