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Before running such a trace experiment, an arbitrary number of tracepoints can be set. Like a breakpoint (see section 5.1.1 Setting breakpoints), a tracepoint has a number assigned to it by GDB. Like with breakpoints, tracepoint numbers are successive integers starting from one. Many of the commands associated with tracepoints take the tracepoint number as their argument, to identify which tracepoint to work on.
For each tracepoint, you can specify, in advance, some arbitrary set of data that you want the target to collect in the trace buffer when it hits that tracepoint. The collected data can include registers, local variables, or global data. Later, you can use GDB commands to examine the values these data had at the time the tracepoint was hit.
This section describes commands to set tracepoints and associated conditions and actions.
10.1.1 Create and Delete Tracepoints 10.1.2 Enable and Disable Tracepoints 10.1.3 Tracepoint Passcounts 10.1.4 Tracepoint Action Lists 10.1.5 Listing Tracepoints 10.1.6 Starting and Stopping Trace Experiment
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