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documentationf ¶Return a call tree for the previous statprof run.
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@code
node ::= (@var{proc} @var{count} . @var{nodes})
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documentationf õProfile the execution of @var{thunk}, and return its return values.
The stack will be sampled @var{hz} times per second, and the thunk
itself will be called @var{loop} times.
If @var{count-calls?} is true, all procedure calls will be recorded. This
operation is somewhat expensive.
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documentationf ËProfile the expressions in the body, and return the body's return values.
Keyword arguments:
@table @code
@item #:loop
Execute the body @var{loop} number of times, or @code{#f} for no looping
default: @code{#f}
@item #:hz
Sampling rate
default: @code{20}
@item #:count-calls?
Whether to instrument each function call (expensive)
default: @code{#f}
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documentationf +Do an allocation profile of the execution of @var{thunk}.
The stack will be sampled soon after every garbage collection, yielding
an approximate idea of what is causing allocation in your program.
Since GC does not occur very frequently, you may need to use the
@var{loop} parameter, to cause @var{thunk} to be called @var{loop}
times.
If @var{full-stacks?} is true, at each sample, statprof will store away the
whole call tree, for later analysis. Use @code{statprof-fetch-stacks} or
@code{statprof-fetch-call-tree} to retrieve the last-stored stacks.ΠC4RC > g m
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