z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

dbx: thread
5. To display all threads in async state (that is, threads with a cancelability type of
PTHREAD_INTR_ASYNCHRONOUS) that are waiting to be scheduled), enter:
thread async
Because this thread was created with the PTATASYNCHRONOUS attribute
and the limit was reached, this thread was queued for execution. For example,
if the thread limit is set to ten and there are 12 threads, two of them will be
shown as async for the dbx thread command.
6. To display all threads in pcanc state (that is, threads that have been requested
to be canceled by pthread_cancel(), enter:
thread pcanc
7. To hold all threads, enter:
thread hold
8. To hold thread number 1 and 4, enter:
thread hold 1 4
9. To unhold thread number 1 and 4, enter:
thread unhold 1 4
10. To display the focus thread, enter:
thread current
11. To set the focus thread to thread number 1, enter:
thread current 1
12. To get information about thread number 3, enter:
thread info 3
trace subcommand for dbx: Print tracing information
Format
trace [if condition]
trace procedure [if condition]
trace [variable] at sourceline [if condition]
trace [variable] in procedure [if condition]
trace sourceline [if condition]
trace expression at sourceline [if condition]
Description
The trace subcommand prints tracing information for the specified procedure,
function, source line, expression, or variable when the program runs. A condition
can be specified. The dbx debug program associates a number with each trace
subcommand. To view these numbers, use the status subcommand. To turn tracing
off, use the delete subcommand.
Options
atsourceline
Specifies the source line at which to find the expression being traced.
ifcondition
Specifies a condition for the beginning of the trace. The trace begins only
ifcondition is true.
inprocedure
Specifies the procedure in which to find the procedure or variable being
traced.
224 z/OS V1R9.0 UNIX System Services Command Reference