analyzing the trace buffer,
by printing the $_sdata variable like any other convenience variable.

CONDITION is a boolean expression.

Linespecs are colon-separated lists of location parameters, such as
source filename, function name, label name, and line number.
Example: To specify the start of a label named "the_top" in the
function "fact" in the file "factorial.c", use
"factorial.c:fact:the_top".

Address locations begin with "*" and specify an exact address in the
program.  Example: To specify the fourth byte past the start function
"main", use "*main + 4".

Explicit locations are similar to linespecs but use an option/argument
syntax to specify location parameters.
Example: To specify the start of the label named "the_top" in the
function "fact" in the file "factorial.c", use "-source factorial.c
-function fact -label the_top".

By default, a specified function is matched against the program's
functions in all scopes.  For C++, this means in all namespaces and
classes.  For Ada, this means in all packages.  E.g., in C++,
"func()" matches "A::func()", "A::B::func()", etc.  The
"-qualified" flag overrides this behavior, making GDB interpret the
specified name as a complete fully-qualified name instead.

Multiple tracepoints at one place are permitted, and useful if their
conditions are different.

Do "help breakpoints" for info on other commands dealing with breakpoints.
Do "help tracepoints" for info on other tracepoint commands.