TotalView Users Guide - CI Wiki

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16
Setting
Action Points
This chapter explains how to use action points. TotalView has four
kinds of action points:
� A breakpoint stops execution of processes and threads that reach it.
� A barrier point synchronizes a set of threads or processes at a location.
� An eval point causes a code fragment to execute when it is reached.
� A watchpoint lets you monitor a location in memory and stop execution
when it changes.
This chapter contains the following sections:
� “About Action Points” on page 349
� “Setting Breakpoints and Barriers” on page 351
� “Defining Eval Points and Conditional Breakpoints” on page 366
� “Using Watchpoints” on page 373
� “Saving Action Points to a File” on page 380
About Action Points
Actions points lets you specify an action for TotalView to perform when a
thread or process reaches a source line or machine instruction in your program.The
different kinds of action points that you can use are shown in
Figure 221 on page 350.
� Breakpoints
When a thread encounters a breakpoint, it stops at the breakpoint. Other
threads in the process also stop. You can indicate that you want other
related processes to stop, as well. Breakpoints are the simplest kind of
action point.
TotalView Users Guide:version 8.7 349