Native Inspect Manual (H06.03+)

Introducing Native Inspect
Native Inspect Manual—528122-003
1-9
Starting Native Inspect
Invoking the Debugger From a Running Process
Native Inspect is automatically started by the NonStop operating system when a
debugger is required for any of the following reasons:
•
TNS/E native process code calls the PROCESS_DEBUG_ or DEBUG procedure.
•
A TNS/E native process encounters a breakpoint set by a prior debugging session.
•
The user of another debugger switches to Native Inspect.
When a running process invokes a debugger, the operating system automatically
selects a debugger according to the debugger options you set (INSPECT ON or OFF)
in addition to the process type (TNS versus TNS/E) and the availability of a connection
to Visual Inspect, which is the preferred debugger on TNS/E systems.
Debugger Selection Criteria
Two figures illustrate the criteria that are evaluated during debugger selection:
•
Figure 1-2, Debugger Selection for a TNS/E Native Process, on page 1-10
•
Figure 1-3, Debugger Selection for a TNS Process Running on TNS/E, on
page 1-11
COBOL programs are an exception in both cases; COBOL programs must be
debugged using either Visual Inspect or Inspect . Note that Inspect can be used only
to debug TNS COBOL85 programs on a TNS/E system. Also, the system can select
Native Inspect as the debugger for a TNS/E native COBOL program. In this case, you
should start a Visual Inspect session and transfer the TNS/E native COBOL program to
Visual Inspect using the switch command.
In both Figure 1-2 and Figure 1-3, debugger selection criteria are defined as follows:
INSPECT attribute on? The setting for INSPECT is set ON for the process you
will debug (set with TACL, the compiler, or the linker).
Visual Inspect session? You have started Visual Inspect and have connected to
the TNS/E host on which the process to be debugged
will run. The user ID of the process must match the
user ID that was used to log on to Visual Inspect.
Inspect available? The Inspect subsystem (IMON, DMON, $DMnn) is
running, and the Inspect command-line interface is
available.