Unwinding the Stack the Hard Way

• rust-minidump

  3 403 8.7 Rust

  Type definitions, parsing, and analysis for the minidump file format.

  

Generally what we do when we fall back to scanning depends on the architecture. For x86 you can find the logic here: https://github.com/rust-minidump/rust-minidump/blob/77638ab7...

Since we do post-hoc stack walking our ability to actually look at the assembly is limited. In most cases where we have no CFI we also do not have the binary to begin with, so we're in random memory land.

• ClickHouse

  208 34,153 10.0 C++

  ClickHouse® is a free analytics DBMS for big data

  

We have implemented asynchronous signal-safe in-process stack unwinding for always-on profiler in ClickHouse: https://clickhouse.com/docs/en/operations/optimizing-perform...

The downside - it required many patches to LLVM's libunwind, and not all of them are accepted yet: https://bugs.llvm.org/show_bug.cgi?id=48186

ClickHouse source code: https://github.com/ClickHouse/ClickHouse

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• tock

  32 4,971 9.9 Rust

  A secure embedded operating system for microcontrollers

  

Yeah, and I like I mentioned in the earlier comment, omitting the frame pointer reduces code size by 10% on RISC-V targets, which is huge when dealing with embedded flash: https://github.com/tock/tock/pull/1660

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