_lwp_suspend() suspends execution of the LWP specified by
lwp. Once an LWP is suspended, subsequent calls to
_lwp_suspend() have no effect. The only way to resume execution of a suspended LWP is via
_lwp_continue().
_lwp_continue() resumes execution of the LWP specified by
lwp. Once an LWP is resumed, subsequent calls to
_lwp_continue() have no effect.