- (thread-created? THREAD) => boolean procedure
- (thread-ready? THREAD) => boolean procedure
- (thread-running? THREAD) => boolean procedure
- (thread-blocked? THREAD) => boolean procedure
- (thread-suspended? THREAD) => boolean procedure
- (thread-sleeping? THREAD) => boolean procedure
- (thread-terminated? THREAD) => boolean procedure
- (thread-dead? THREAD) => boolean procedure
Is the THREAD in the indicated state?