TotalView Users Guide - CI Wiki

Manipulating Processes and Threads
TotalView disables the Thread > Go command if asynchronous thread control is not
available. If you enter a thread-level command in the CLI when asynchronous thread
controls aren’t available, TotalView tries to perform an equivalent action. For example, it
continues a process instead of a thread.
For a single-process program, the Process > Go and Group > Go commands
are equivalent. For a single-threaded process, the Process > Go and
Thread > Go commands are equivalent.
Creating a Process Without Starting It
The Process > Create command creates a process and stops it before the
first statement in your program executes. If you link a program with shared
libraries, TotalView allows the dynamic loader to map into these libraries.
Creating a process without starting it is useful when you need to do the following:
� Create watchpoints or change the values of global variables after a process
is created, but before it runs.
� Debug C++ static constructor code.
CLI: dstepi
While there is no CLI equivalent to the Process > Create command,
executing the dstepi command produces the same effect.
Creating a Process by Single-Stepping
The TotalView single-stepping commands lets you create a process and run
it to the beginning of your programs. The single-stepping commands available
from the Process menu are as shown in the following table:
GUI command CLI command Creates the process and ...
Process > Step dfocus p dstep Runs it to the first line of the main() routine.
Process > Next dfocus p dnext Runs it to the first line of the main() routine;
this is the same as Process > Step.
Process >
Step Instruction
Process >
Next Instruction
dfocus p dstepi Stops it before any of your program executes.
dfocus p dnexti Runs it to the first line of the main() routine.
This is the same as Process > Step.
If a group-level or thread-level stepping command creates a process, the
behavior is the same as if it were a process-level command.
Chapter 13, “Using Groups, Processes, and Threads,” on page 251 contains a detailed
discussion of setting the focus for stepping commands.
Stepping and Setting Breakpoints
Several of the single-stepping commands require that you select a source
line or machine instruction in the Source Pane. To select a source line,
place the cursor over the line and click your left mouse button. If you select
TotalView Users Guide: version 8.7 237