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Starting the CLI
This two-step operation of loading and running lets you set action points
before execution begins. It also means that you can execute a program
more than once. At a later time, you can use the drerun command to
restart your program, perhaps sending it new command-line arguments. In
contrast, reentering the dload command tells the CLI to reload the program
into memory (for example, after editing and recompiling the program). The
dload command always creates new processes. This means that you get a
new process each time the CLI executes it. The CLI does not, however,
remove older ones.
The dkill command terminates one or more processes of a program started
by using a dload, drun, or drerun command. The following example continues
where the previous example left off:
d1. dkill # kills process
d1. drun # runs program from start
d1. dlist –e –n 3 # shows lines about current spot
79
80@> do 40 i = 1, 500
81 denorms(i) = x'00000001'
d1. dwhat master_array # Tell me about master_array
In thread 1.1:
Name: master_array; Type: integer(100);
Size: 400 bytes; Addr: 0x140821310
Scope: ##arraysAlpha#arrays.F#check_fortran_arrays
(Scope class: Any)
Address class: proc_static_var
(Routine static variable)
d1. dgo # Start program running
d1. dwhat denorms # Tell me about denorms
In thread 1.1:
Name: denorms; Type: ; Size: 8 bytes;
Addr: 0x1408214b8
Scope: ##arraysAlpha#arrays.F#check_fortran_arrays
(Scope class: Any)
Address class: proc_static_var
(Routine static variable)
d1. dprint denorms(0) # Show me what is stored
denorms(0) = 0x0000000000000001 (1)
d1.
Because information is interleaved, you may not realize that the prompt
has appeared. It is always safe to use the Enter key to have the CLI redisplay
its prompt. If a prompt isn’t displayed after you press Enter, you know
that the CLI is still executing.
204 Chapter 10: Using the CLI