Calltrace is a tool that displays all calls to user procedures. It displays the arguments to the calls, and it indents to show the depth of the continuation.
Throw away ".zo" versions of your source
Prefix your program with
perhaps by starting mzscheme with
mzscheme -l trace ...
before arguments to load your program.
Run your program
The trace module is odd; don’t import it into another module. Instead, the trace module is meant to be invoked from the top-level, so that it can install an evaluation handler, exception handler, etc.
NOTE: trace has no effect on code loaded as compiled byte code (i.e., from a ".zo" file) or native code (i.e., from a ".dll", ".so", or ".dylib" file).
Calltrace’s instrumentation can be explicitly disabled via the instrumenting-enabled parameter. Instrumentation is on by default. The instrumenting-enabled parameter affects only the way that source code is compiled, not the way that exception information is reported.
Do not load trace before writing ".zo" files. Calltrace instruments S-expressions with unprintable values; this works fine if the instrumented S-expression is passed to the default eval handler, but neither the S-expression nor its byte-code form can be marshalled to a string.
The trace/calltrace-lib module provides functions that implement trace.
on? : any/c
A parameter that determines whether tracing instrumentation is enabled.
(calltrace-eval-handler e) → any
e : any/c
Requiring trace installs this procedure as the value for current-eval.
(annotate e) → syntax?
e : any/c
Instruments the expression e with Calltrace support. This function is normally used by calltrace-eval-handler.