https://sourceware.org/bugzilla/show_bug.cgi?id=32916
Bug ID: 32916
Summary: add eu-stack + eu-stacktrace test harness
Product: elfutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: tools
Assignee: unassigned at sourceware dot org
Reporter: serhei at serhei dot io
CC: elfutils-devel at sourceware dot org
Target Milestone: ---
To remove the 'experimental' status on the new libdwfl_stacktrace (added in
version 0.193) and eu-stacktrace, the first thing that needs to be added is
proper testsuite coverage. This is fairly involved:
* First, add a test harness that tests eu-stack against a live process
(eu-stack isn't being tested either).
* Next, rework eu-stacktrace into a basic profiling tool that can get data from
perf_events directly (or some other sampling mechanism that is more amenable to
being run on buildbots?). This serves as a standalone way to test the
libdwfl_stacktrace functionality
* Next, add a test harness for eu-stacktrace. Since the exact profiling data on
a system is hard to predict, the test would just sanitycheck some basic
properties (presence of some test process, not too many packets 'lost' or
failed to unwind, etc.). The exact requirements will need to be tuned to avoid
making the test flaky.
* Follow-up work would be to enable some of the commented assertions in the
libdwfl_stacktrace caching code. (These document various edge cases in the
caching logic that can be improved.)
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