These operations suspend and resume the thread identified by th_p. A thread that has been suspended with td_thr_dbsuspend() is said to be in the "dbsuspended" state. A thread whose "dbsuspended" flag is set will not execute. If an unbound thread enters the "dbsuspended" state and is currently assigned to a lightweight process ( LWP), then the LWP becomes available for assignment to a different thread.

A thread's "dbsuspended" state is independent of the suspension state controlled by calls to thr_suspend(3THR) and thr_continue(3THR) from within the target process. Calling thr_continue(3THR) within the target process on a thread that has been suspended during a call to td_thr_dbsuspend() will not cause that thread to resume execution; only a call to td_thr_dbresume() will do that.

TD_OK

The call completed successfully.

TD_BADTH

An invalid thread handle was passed in.

TD_DBERR

A call to one of the imported interface routines failed.

TD_NOCAPAB

The "agent thread" in the target process has not completed initialization, so this operation cannot be performed. The operation can be performed after the target process has been allowed to make some forward progress. See also libthread_db(3THR)

TD_ERR

A libthread_db internal error occurred.

See attributes(5) for description of the following attributes:

libthread_db(3THR), thr_continue(3THR), thr_suspend(3THR), libthread_db(3LIB), attributes(5)