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use std::borrow::Borrow;
use std::path::PathBuf;
use blazesym::symbolize::CodeInfo;
use blazesym::symbolize::Input;
use blazesym::symbolize::Sym;
use blazesym::symbolize::Symbolized;
use blazesym::symbolize::Symbolizer;
use blazesym::symbolize::source::Elf;
use blazesym::symbolize::source::Source;
use tracing::error;
use crate::profile::Frame;
use crate::profile::FrameAddress;
use crate::profile::SymbolizationError;
use crate::profile::SymbolizedFrame;
pub fn symbolize_native_stack_blaze(
address_pairs: Vec<FrameAddress>,
object_path: &PathBuf,
) -> Vec<Vec<Frame>> {
let virtual_addresses = address_pairs.iter().map(|e| e.virtual_address);
let offsets = address_pairs
.iter()
.map(|e| e.file_offset)
.collect::<Vec<_>>();
let mut res = Vec::new();
let src = Source::Elf(Elf::new(object_path));
let symbolizer = Symbolizer::new();
let syms = match symbolizer.symbolize(&src, Input::VirtOffset(&offsets)) {
Ok(symbolized) => symbolized,
Err(e) => {
res.resize(
offsets.len(),
vec![Frame::with_error(
0xBAD,
format!("<blazesym: failed to symbolize due to {e}"),
)],
);
return res;
}
};
if syms.len() != virtual_addresses.len() {
error!("symbols.len() != virtual_addresses.len() this should not happen");
}
for (symbol, virtual_address) in syms.iter().zip(virtual_addresses) {
let mut symbols = Vec::new();
match symbol {
Symbolized::Sym(Sym {
name,
addr,
offset: _,
code_info,
inlined,
..
}) => {
fn filename<'a, T: Borrow<CodeInfo<'a>>>(code_info: &Option<T>) -> Option<String> {
code_info
.as_ref()
.map(|a| a.borrow().file.to_string_lossy().to_string())
}
fn line<'a, T: Borrow<CodeInfo<'a>>>(code_info: &Option<T>) -> Option<u32> {
code_info.as_ref().map(|a| a.borrow().line)?
}
for frame in inlined.iter().rev() {
symbols.push(Frame {
virtual_address,
file_offset: Some(*addr),
symbolization_result: Some(Ok(SymbolizedFrame::new(
frame.name.to_string(),
true,
filename(&frame.code_info),
line(&frame.code_info),
))),
});
}
symbols.push(Frame {
virtual_address,
file_offset: Some(*addr),
symbolization_result: Some(Ok(SymbolizedFrame::new(
name.to_string(),
false,
filename(code_info),
line(code_info),
))),
});
}
Symbolized::Unknown(r) => {
symbols.push(Frame {
virtual_address,
file_offset: None,
symbolization_result: Some(Err(SymbolizationError::Generic(format!(
"<blazesym: unknown symbol due to {r}>"
)))),
});
}
}
res.push(symbols);
}
res
}
#[cfg(test)]
mod tests {
use super::*;
use std::str::FromStr;
#[test]
fn test_blazesym() {
assert_eq!(
symbolize_native_stack_blaze(
vec![
FrameAddress {
virtual_address: 0x0,
file_offset: 0x4012d5 // main with multiple inlined nested calls
},
FrameAddress {
virtual_address: 0x0,
file_offset: 0x401058 // _start
}
],
&PathBuf::from_str("tests/testdata/main_cpp_clang_03_with_inlined_3s").unwrap()
),
vec![
vec![
Frame {
virtual_address: 0,
file_offset: Some(0x4012b0),
symbolization_result: Some(Ok(SymbolizedFrame::new(
"top3()".to_string(),
true,
Some("src/main.cpp".to_string()),
Some(22)
)))
},
Frame {
virtual_address: 0,
file_offset: Some(0x4012b0),
symbolization_result: Some(Ok(SymbolizedFrame::new(
"c3()".to_string(),
true,
Some("src/main.cpp".to_string()),
Some(36)
)))
},
Frame {
virtual_address: 0,
file_offset: Some(0x4012b0),
symbolization_result: Some(Ok(SymbolizedFrame::new(
"b3()".to_string(),
true,
Some("src/main.cpp".to_string()),
Some(37)
)))
},
Frame {
virtual_address: 0,
file_offset: Some(0x4012b0),
symbolization_result: Some(Ok(SymbolizedFrame::new(
"a3()".to_string(),
true,
Some("src/main.cpp".to_string()),
Some(38)
)))
},
Frame {
virtual_address: 0,
file_offset: Some(0x4012b0),
symbolization_result: Some(Ok(SymbolizedFrame::new(
"main".to_string(),
false,
Some("src/main.cpp".to_string()),
Some(44)
)))
},
],
vec![Frame {
virtual_address: 0x0,
file_offset: Some(0x401040), /* TODO investigate why this doesn't match the
* input value */
symbolization_result: Some(Ok(SymbolizedFrame::new(
"_start".to_string(),
false,
None,
None
)))
}]
]
);
}
}