12.3. Convenience Variables for Tracepoints
- (int) $trace_frame
The current trace snapshot (a.k.a. frame) number, or -1 if no
snapshot is selected.
- (int) $tracepoint
The tracepoint for the current trace snapshot.
- (int) $trace_line
The line number for the current trace snapshot.
- (char ) $trace_file
The source file for the current trace snapshot.
- (char ) $trace_func
The name of the function containing $tracepoint.
Note: $trace_file is not suitable for use in printf,
use output instead.
Here's a simple example of using these convenience variables for
stepping through all the trace snapshots and printing some of their
(gdb) tfind start
(gdb) while $trace_frame != -1
> output $trace_file
> printf ", line %d (tracepoint #%d)\n", $trace_line, $tracepoint