mirror of
https://github.com/OpenMP/Examples.git
synced 2025-04-07 23:22:11 +01:00
60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
/*
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* @@name: taskgroup.1c
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* @@type: C
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* @@compilable: yes
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* @@linkable: yes
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* @@expect: success
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*/
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extern void start_background_work(void);
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extern void check_step(void);
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extern void print_results(void);
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struct tree_node
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{
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struct tree_node *left;
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struct tree_node *right;
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};
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typedef struct tree_node* tree_type;
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extern void init_tree(tree_type);
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#define max_steps 100
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void compute_something(tree_type tree)
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{
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// some computation
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}
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void compute_tree(tree_type tree)
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{
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if (tree->left)
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{
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#pragma omp task
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compute_tree(tree->left);
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}
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if (tree->right)
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{
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#pragma omp task
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compute_tree(tree->right);
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}
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#pragma omp task
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compute_something(tree);
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}
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int main()
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{
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int i;
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tree_type tree;
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init_tree(tree);
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#pragma omp parallel
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#pragma omp single
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{
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#pragma omp task
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start_background_work();
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for (i = 0; i < max_steps; i++)
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{
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#pragma omp taskgroup
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{
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#pragma omp task
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compute_tree(tree);
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} // wait on tree traversal in this step
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check_step();
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}
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} // only now is background work required to be complete
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print_results();
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}
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