static ExecPtr init();
Exec* start() override;
- Exec* wait() override;
- Exec* wait_for(double timeout) override;
+
/*! take a vector of s4u::ExecPtr and return when one of them is finished.
* The return value is the rank of the first finished ExecPtr. */
static int wait_any(std::vector<ExecPtr>* execs) { return wait_any_for(execs, -1); }