v0.9.2 release preparation

[namhyung]

v0.9.2

I'm thinking about releasing a new version (v0.9.2) soon. Although there are still some bugs here and there I think it's time to release before moving to work on other features. It'd be nice if you could help testing current version.

This is a minor release with following changes

tracing library calls without PLT (#592)

modern distro started to build system binaries without PLT (gcc has -fno-plt) it made uftrace failed to trace library calls. this version added PLT equivalent around the text segment to trace them.

add signal trigger (#340)

sometimes it's hard to determine which function we want to control. also daemon programs don't exit so uftrace cannot know when it should stop tracing. the signal triggers add a way to control uftrace behavior using signals.

parallel execution of tests (#569)

test program (tests/runtest.py) was enhaned to use multi-process facility of python so that it can run tests in parallel. it improved speed of running tests during development.

rudimentary support for Rust programs (#594)

recently Rust compiler added an instrumentation option to add mcount call for each function. uftrace can trace those binaries like C/C++ if it's compiled with -Z instrument-mcount.

show data symbols in arguments (#632)

this work is not finished yet but it enabled data symbol loading which is used to display arguments and return values and it'll help understanding user's program.

And many bugfixes..

[honggyukim]

Thanks for the summary. It'd be better to make a note if listed features are merged into master. For example, signal feature is not yet merged so people may get confused.

[namhyung]

Done.

[namhyung]

Merged: 66fc1fb