src/libstd/sys/unix/backtrace/printing/mod.rs

   1 // Copyright 2014-2017 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 mod dladdr;
  12
  13 use sys::backtrace::BacktraceContext;
  14 use sys_common::backtrace::Frame;
  15 use io;
  16
  17 #[cfg(target_os = "emscripten")]
  18 pub use self::dladdr::resolve_symname;
  19
  20 #[cfg(target_os = "emscripten")]
  21 pub fn foreach_symbol_fileline<F>(_: Frame, _: F, _: &BacktraceContext) -> io::Result<bool>
  22 where
  23     F: FnMut(&[u8], u32) -> io::Result<()>
  24 {
  25     Ok(false)
  26 }
  27
  28 #[cfg(not(target_os = "emscripten"))]
  29 pub use sys_common::gnu::libbacktrace::foreach_symbol_fileline;
  30
  31 #[cfg(not(target_os = "emscripten"))]
  32 pub fn resolve_symname<F>(frame: Frame, callback: F, bc: &BacktraceContext) -> io::Result<()>
  33 where
  34     F: FnOnce(Option<&str>) -> io::Result<()>
  35 {
  36     ::sys_common::gnu::libbacktrace::resolve_symname(frame, |symname| {
  37         if symname.is_some() {
  38             callback(symname)
  39         } else {
  40             dladdr::resolve_symname(frame, callback, bc)
  41         }
  42     }, bc)
  43 }