Setting Breakpoints and Traces

When an event occurs, dbx allows you to stop a process, execute arbitrary commands, or print information. The simplest example of an event is a breakpoint. Examples of other events are faults, signals, system calls, calls to dlopen(), and data changes.

This chapter describes how to set, clear, and list breakpoints and traces. For complete information on the event specifications you can use in setting breakpoints and traces, see Setting Event Specifications.

This chapter contains the following sections:

• Setting Breakpoints

• Setting Filters on Breakpoints

• Tracing Execution

• Executing dbx Commands at a Line

• Setting Breakpoints in Dynamically Loaded Libraries

• Listing and Deleting Breakpoints

• Enabling and Disabling Breakpoints

• Efficiency Considerations