Trait inferno::collapse::Collapse[−][src]

pub trait Collapse {
    fn collapse<R, W>(&mut self, reader: R, writer: W) -> Result<()>
    where
        R: BufRead,
        W: Write;

    fn is_applicable(&mut self, input: &str) -> Option<bool>;

    fn collapse_file<P, W>(
        &mut self, 
        infile: Option<P>, 
        writer: W
    ) -> Result<()>
    where
        P: AsRef<Path>,
        W: Write,
    { ... }

    fn collapse_file_to_stdout<P>(&mut self, infile: Option<P>) -> Result<()>
    where
        P: AsRef<Path>,
    { ... }
}
Expand description

The abstract behavior of stack collapsing.

Implementors of this trait are providing a way to take the stack traces produced by a particular profiler’s output (like perf script) and produce lines in the folded stack format expected by crate::flamegraph::from_lines.

See also the crate-level documentation for details.

Required methods

Collapses the contents of the provided reader and writes folded stack lines to the provided writer.

Returns whether this implementation is appropriate for the given input.

  • None means “not sure – need more input”
  • Some(true) means “yes, this implementation should work with this string”
  • Some(false) means “no, this implementation definitely won’t work”

Provided methods

Collapses the contents of the provided file (or of STDIN if infile is None) and writes folded stack lines to provided writer.

Collapses the contents of the provided file (or of STDIN if infile is None) and writes folded stack lines to STDOUT.

Implementors