source: tests/concurrency/waituntil/futures.cfa@ a9ae5ca

#include <select.hfa>
#include <future.hfa>
#include <thread.hfa>

future(int) A, B, C;

semaphore s{0};

thread Server1 {};
void main( Server1 & this ) {
    fulfil(B, 3);
    P( s );
    fulfil(A, 2);
    fulfil(C, 4);
}

thread Server2 {};
void main( Server2 & this ) {
    fulfil(B, 6);
    fulfil(A, 5);
    fulfil(C, 7);
}

int main() {
    processor proc[1];
    printf("start\n"); // currently not working
    {
        Server1 s1;
        waituntil( A ) { get(A); }
        or waituntil( B ) { get(B); V( s ); }
        and waituntil( C ) { get(C); }
    }
    reset(A);
    reset(B);
    reset(C);
    for ( int i = 0; i < 8; i++ ) {
        {
            Server2 s2;
            when( i % 2 == 0 ) waituntil( A ) { get(A); }
            or when( i % 4 < 2 ) waituntil( B ) { get(B); }
            and when( i < 4 ) waituntil( C ) { get(C); }
        }
        reset(A);
        reset(B);
        reset(C);
        {
            Server2 s2;
            (
                when( i % 2 == 0 ) waituntil( A ) { get(A); }
                or when( i % 4 < 2 ) waituntil( B ) { get(B); }
            )
            and when( i < 4 ) waituntil( C ) { get(C); }
        }
        reset(A);
        reset(B);
        reset(C);
    }

    printf("end\n");
    return 0;
}