1// These functions are used to provide a signal-wait mechanism to enforce
2// expected scheduling for the test cases. Conditional variable (s) needs to be
3// shared! Initialize to 0
4#include <unistd.h>
5
6#define OMPT_SIGNAL(s) ompt_signal(&s)
7// inline
8void ompt_signal(int *s) {
9#pragma omp atomic
10 (*s)++;
11}
12
13#define OMPT_WAIT(s, v) ompt_wait(&s, v)
14// wait for s >= v
15// inline
16void ompt_wait(int *s, int v) {
17 int wait = 0;
18 do {
19 usleep(useconds: 10);
20#pragma omp atomic read
21 wait = (*s);
22 } while (wait < v);
23}
24

source code of openmp/tools/multiplex/tests/ompt-signal.h